Calcium arsenate
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Calcium arsenate
structure -
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CAS No:
7778-44-1
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Formula:
AsH3O4.3/2Ca
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Chemical Name:
Calcium arsenate
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Synonyms:
Arsenic acid (H3AsO4),calcium salt (2:3);Calcium arsenate (Ca3(AsO4)2);Chip-Cal Granular;Cucumber dust;Pencal;Spra-cal;Tricalcium arsenate;Calcium arsenate;1333-25-1;1450620-86-6;1940140-03-3;2226341-09-7
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CAS No:
Description
White powder. Slightly soluble in water; soluble in dilute acids. Decomposes on heating.
Calcium arsenate is a white powder. Slightly soluble in water. Toxic by inhalation and ingestion. Used as an insecticide and germicide.|COLOURLESS-TO-WHITE AMORPHOUS POWDER.
Calcium arsenate is a white powder. Slightly soluble in water. Toxic by inhalation and ingestion. Used as an insecticide and germicide.|Calcium arsenate is a polymer.
Calcium arsenate Basic Attributes
398.07200
397.69000
233-287-8
95OX15I8ZU
0765
1573
DTXSID6058182
White powder|Colorless to white solid.
28429090
Characteristics
172.50000
-1.71200
Calcium arsenate is a white powder. Slightly soluble in water. Toxic by inhalation and ingestion. Used as an insecticide and germicide.
3.620 g/cm3
1455 °C
Decomposes
It is soluble in water and acids, insoluble in organic solvents
Protect container against physical damage. Store in well ventilated area away from food or food products and combustible materials. /Inorganic arsenic cmpd/
0 mmHg (approx)
LD50 orally in female rats: 298 mg/kg (Gaines)
Odorless
Decomp on heating
Slightly soluble in water.
Salts, Basic
Has only weak oxidizing power but redox reactions can still occur. Soluble in dilute acids. [Hawley]. Produces toxic fumes of arsenic when heated to decomposition (NIOSH, 2016). Reacts with acids to produce toxic arsine gas [International Chemical Safety Card 0765].
Slight corrosive action on metals
Safety Information
II
6.1
1573
23/25-45-50/53
S45-S53
T, N
Separated from acids and food and feedstuffs. Well closed. Store in an area without drain or sewer access.
Moisture and carbon dioxide cause slow decomp to calcium carbonate and (phytotoxic) dicalcium hydrogen arsenate. In the presence of acids, water sol, strongly phytotoxic arsenic acid is produced.
P201, P202, P260, P264, P270, P280, P281, P301+P310, P305+P351+P338, P307+P311, P308+P313, P314, P321, P330, P337+P313, P405, P501
H301
SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.|Recycling: Dissolve in a minimum amt of concentrated hydrochloric acid. Add to water until the appearance of white precipitate. Add 6 M-HCl /6 M-hydrochloric acid/ just to dissolve again. Saturate with hydrogen sulfide. After filtration, wash the precipitate and return to suppliers. Recommendable methods: Chemical treatment, solidification /hazardous waste/, landfill. Not recommendable methods: Thermal destruction, discharge to sewer.|Dissolve in HCl, precipitate as sulfide using H2S, dry, and return to supplier.|Chemical Treatability of Arsenic; Concentration Process: Chemical Precipitation; Chemical Classification: Metal; Scale of Study: Pilot Scale; Type of Wastewater Used: Domestic Wastewater + Pure Compound; Results of Study: 5ppm @ 4gpm @ pH= 7.0. Iron system-90% reduction; low lime system-80% reduction; high lime system-76% reduction; (3 coagulant systems were used; Iron system used 45 ppm as Fe of Fe2(SO4)3 @ pH= 6.0. Low lime system used 20 ppm Fe of Fe2(SO4)3 and 260 ppm of CaO @ pH= 10.0. High lime system used 600 ppm of CaO @ pH= 11.5. Chemical coagulation was followed by multimedia filtration). /Arsenic cmpd/|For more Disposal Methods (Complete) data for CALCIUM ARSENATE (6 total), please visit the HSDB record page.
... WHEN WATER SOLN OF ARSENICALS ARE IN CONTACT WITH ACTIVE METALS SUCH AS ARSENIC, IRON, ALUMINUM, ZINC, ... HIGHLY TOXIC FUMES OF ARSENIC /INCLUDING ARSINE ARE RELEASED/. /ARSENIC CMPD/|Strong oxidizers, bromide azide [Note: Hydrogen gas can react with inorganic arsenic to form the highly toxic gas arsine.] /Arsenic (inorganic compounds, as As)/
DHHS/ATSDR; Toxicological Profile for Arsenic p. 50 (2000). The ATSDR toxicological profile identifies and reviews the key literature that describes a hazardous substance's toxicologic properties. Other pertinent literature is presented in less detail.|Nat'l Research Council Canada; Effects of Arsenic in the Canadian Environment p.122 (1978) NRCC No. 15391|U.S. Environmental Protection Agency's Integrated Risk Information System (IRIS) on Arsenic, inorganic (7440-38-2).[Available from the Substance File List as of March 15, 2000: http://www.epa.gov/iris/subst/index.html]|USEPA; Ambient Water Quality Criteria Doc: Arsenic p.A-2 (1980) EPA 440/5-80-021|For more Special Reports (Complete) data for CALCIUM ARSENATE (6 total), please visit the HSDB record page.
Fire may produce irritating or poisonous gases. When heated to decomposition, calcium arsenate produces toxic fumes of arsenic. Avoid heat. Hazardous polymerization may not occur. (EPA, 1998)|Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.
|Danger|H301 (100%): Toxic if swallowed [Danger Acute toxicity, oral]|P201, P202, P261, P264, P270, P271, P273, P281, P301+P310, P304+P340, P308+P313, P311, P321, P330, P391, P403+P233, P405, and P501|Aggregated GHS information provided by 5 companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H301: Toxic if swallowed [Danger Acute toxicity, oral]|P201, P202, P260, P264, P270, P280, P281, P301+P310, P305+P351+P338, P307+P311, P308+P313, P314, P321, P330, P337+P313, P405, and P501|H300: Fatal if swallowed [Danger Acute toxicity, oral]|P201, P202, P260, P264, P270, P281, P301+P310, P305+P351+P338, P307+P311, P308+P313, P312, P314, P321, P330, P332+P313, P337+P313, P405, and P501
Excerpt from ERG Guide 151 [Substances - Toxic (Non-combustible)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)
Excerpt from ERG Guide 151 [Substances - Toxic (Non-combustible)]: Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2016)
Skin: Wear appropriate personal protective clothing to prevent skin contact. Eyes: Wear appropriate eye protection to prevent eye contact. Wash skin: The worker should immediately wash the skin when it becomes contaminated. The worker should wash daily at the end of each work shift. Remove: Work clothing that becomes wet or significantly contaminated should be removed and replaced. Change: Workers whose clothing may have become contaminated should change into uncontaminated clothing before leaving the work premise. Provide: Eyewash fountains should be provided in areas where there is any possibility that workers could be exposed to the substance; this is irrespective of the recommendation involving the wearing of eye protection. Facilities for quickly drenching the body should be provided within the immediate work area for emergency use where there is a possibility of exposure. [Note: It is intended that these facilities provide a sufficient quantity or flow of water to quickly remove the substance from any body areas likely to be exposed. The actual determination of what constitutes an adequate quick drench facility depends on the specific circumstances. In certain instances, a deluge shower should be readily available, whereas in others, the availability of water from a sink or hose could be considered adequate.] (NIOSH, 2016)|DUST MASK; GOGGLES OR FACE SHIELD; PROTECTIVE GLOVES.|Wear appropriate eye protection to prevent eye contact.|Wear appropriate personal protective clothing to prevent skin contact.|Recommendations for respirator selection. Condition: At concentrations above the NIOSH REL, or where there is no REL at any detectable cocentration. Respirator Class(es): Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive pressure mode. Any supplied-air respirator that has a full facepiece and is operated in pressure-demand or other positive pressure mode in combination with an auxiliary self-contained breathing apparatus operated in pressure-demand or other positive pressure mode.|For more Personal Protective Equipment (PPE) (Complete) data for CALCIUM ARSENATE (11 total), please visit the HSDB record page.
Not combustible.
Personnel protection: ... Wear positive pressure self contained breathing apparatus when fighting fires involving this material.|If material involved in fire: Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as fog. Use foam, dry chemical, or carbon dioxide. /Arsenical cmpd, liquid, NOS/|If material involved in fire: Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as fog. Use foam, dry chemical, or carbon dioxide. /Arsenical cmpd, solid, NOS/|Personnel protection: ... Wear positive pressure self-contained breathing apparatus when fighting fires involving this material. /Arsenical cmpd, solid, NOS/
Prompt cleanup and removal are necessary. Control runoff and isolate discharged material for proper disposal.|Both arsenate and arsenite can be removed from the water column by co-precipitation or adsorption onto iron oxides. Arsenate species can also be removed by adsorption onto aluminum hydroxide and clays, while arsenite is readily adsorbed onto metal sulfides. /Arsenate and arsenite/|Floors and other accessible surfaces contaminated with inorganic arsenic may not be cleaned by the use of compressed air, and shoveling and brushing may be used only where vacuuming or other relevant methods have been tried and found not to be effective. /Inorganic arsenic compounds/
SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.|Personnel protection: Avoid breathing dusts, and fumes from burning material. Keep upwind. Avoid bodily contact with the material. ... Do not handle broken packages unless wearing appropriate personal protective equipment. Wash away any material which may have contacted the body with copious amounts of water or soap and water. ... If contact with calcium arsenate is anticipated, wear appropriate chemical protective clothing.|Lockers should be provided with separate compartments for work & personal clothes, & adjacent sanitary facilities of a high standard should be made available. Smoking, eating, & drinking at the workplace should not be allowed. /Arsenic/|SRP: Contaminated protective clothing should be segregated in such a manner so that there is no direct personal contact by personnel who handle, dispose, or clean the clothing. Quality assurance to ascertain the completeness of the cleaning procedures should be implemented before the decontaminated protective clothing is returned for reuse by the workers. All contaminated clothing should not be taken home at end of shift, but should remain at employee's place of work for cleaning.|For more Preventive Measures (Complete) data for CALCIUM ARSENATE (27 total), please visit the HSDB record page.
/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ Health: Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.|/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ Fire or Explosion: Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.|/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at lease 25 meters (75 feet) for solids. Keep unauthorized personnel away. Stay upwind. Keep out of low areas.|/GUIDE 151: SUBSTANCES - TOXIC (NON-COMBUSTIBLE)/ Protective Clothing: Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer. It may provide little or no thermal protection. Structural firefighters' protective clothing provides limited protection in fire situations ONLY; it is not effective in spill situations where direct contact with the substance is possible.|For more DOT Emergency Guidelines (Complete) data for CALCIUM ARSENATE (8 total), please visit the HSDB record page.
No person may /transport,/ offer or accept a hazardous material for transportation in commerce unless that person is registered in conformance ... and the hazardous material is properly classed, described, packaged, marked, labeled, and in condition for shipment as required or authorized by ... /the hazardous materials regulations (49 CFR 171-177)./|The International Air Transport Association (IATA) Dangerous Goods Regulations are published by the IATA Dangerous Goods Board pursuant to IATA Resolutions 618 and 619 and constitute a manual of industry carrier regulations to be followed by all IATA Member airlines when transporting hazardous materials.|The International Maritime Dangerous Goods Code lays down basic principles for transporting hazardous chemicals. Detailed recommendations for individual substances and a number of recommendations for good practice are included in the classes dealing with such substances. A general index of technical names has also been compiled. This index should always be consulted when attempting to locate the appropriate procedures to be used when shipping any substance or article.
INHALATION CAUSES RESP IRRITATION. INGESTION CAUSES IRRITATION OF MOUTH & STOMACH. CONTACT WITH EYES CAUSES IRRITATION.|ARSENICAL DUSTS ... ARE IRRITATING TO UPPER RESP TRACT & EYES. CONJUNCTIVITIS PRODUCED BY ... THESE SUBSTANCES ARE CHARACTERIZED BY ITCHING, BURNING, & WATERING OF EYES. ... /INORGANIC ARSENIC DUSTS/
8 hr Time-Weighted avg: 10 ug/cu m./Arsenic, inorganic cmpd (as As)/|Permissible Exposure Limit: Table Z-1 8-Hr Time Weighted Avg: 0.5 mg/cu m. /Arsenic, organic cmpd (as As)/
5 mg/cu m (as As); NIOSH considers arsenic (inorganic cmpd, as As) to be a potential occupational carcinogen.|Recommended Exposure Limit: 15 Ceiling Limit: (0.002 mg/cu m).|NIOSH usually recommends that occupational exposures to carcinogens be limited to the lowest feasible concentration.|5 mg/cu m (as As); NIOSH considers arsenic (inorganic cmpd, as As) to be a potential occupational carcinogen. /Arsenic (inorganic cmpd, as As)/|For more NIOSH Recommendations (Complete) data for CALCIUM ARSENATE (6 total), please visit the HSDB record page.
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Vacuum with specialist equipment or carefully sweep into containers. Carefully collect remainder. Then store and dispose of according to local regulations.
Separated from acids and food and feedstuffs. Well closed. Store in an area without drain or sewer access.
A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered.
The substance is irritating to the eyes and respiratory tract. The substance may cause effects on the gastrointestinal tract. This may result in severe gastroenteritis, loss of fluids and electrolytes, cardiac disorders and shock. Exposure far above the OEL could cause death. The effects may be delayed. Medical observation is indicated.
The substance may have effects on the skin, mucous membranes, peripheral nervous system, bone marrow and liver. This may result in pigmentation disorders, hyperkeratosis, perforation of the nasal septum, neuropathy, anaemia and liver impairment. This substance is carcinogenic to humans. Animal tests show that this substance possibly causes toxicity to human reproduction or development.
PREVENT DISPERSION OF DUST! AVOID ALL CONTACT!
Use closed system, ventilation or breathing protection.
Protective gloves. Protective clothing.
Wear face shield or eye protection in combination with breathing protection.
Listed as a hazardous air pollutant (HAP) generally known or suspected to cause serious health problems. The Clean Air Act, as amended in 1990, directs EPA to set standards requiring major sources to sharply reduce routine emissions of toxic pollutants. EPA is required to establish and phase in specific performance based standards for all air emission sources that emit one or more of the listed pollutants. Calcium arsenate is included on this list.|(a) The owner or operator of an existing glass melting furnace subject to the provisions of this subpart shall comply with either paragraph (a)(1) or (a)(2) of this section ... (1) Uncontrolled total arsenic emissions from the glass melting furnace shall be less than 2.5 Mg (2.7 ton) per year, or ... (2) Total arsenic emissions from glass melting furnace shall be conveyed to a control device and reduced by at least 85%. /Total arsenic/|(b) The owner or operator of a new or modified glass melting furnace subject to the provisions of this subpart shall comply with either paragraph (b)(1) or (b)(2) of this section ... (1) Uncontrolled total arsenic emissions from the glass melting furnace shall be less than 0.4 Mg (0.44 ton) per year, or ... (2) Total arsenic emissions from glass melting furnace shall be conveyed to a control device and reduced by at least 85%. /Total arsenic/|The owner or operator of each copper converter subject to the provisions of this subpart shall reduce inorganic arsenic emissions to the atmosphere by meeting the following design, equipment, work practice, and operational requirements: (1) Install, operate, and maintain a secondary hood system on each copper converter. Each secondary hood system shall consist of a hood enclosure, air curtain fan(s), exhaust system fan(s), and ductwork that conveys the captured emission to a control device ... (2) Optimize the capture of secondary inorganic arsenic emission by operating the copper converter and secondary hood systems at all times ... . /Inorganic arsenic/|For more Atmospheric Standards (Complete) data for CALCIUM ARSENATE (6 total), please visit the HSDB record page.
D004; A waste containing arsenic may or may not be characterized as a hazardous waste following testing by the Toxicity Characteristic Leaching Procedure as prescribed by the Resource Conservation and Recovery Act (RCRA) regulations. /Arsenic/
Persons in charge of vessels or facilities are required to notify the National Response Center (NRC) immediately, when there is a release of this designated hazardous substance, in an amount equal to or greater than its reportable quantity of 1 lb or 0.454 kg. The toll free number of the NRC is (800) 424-8802; In the Washington D.C. metropolitan area (202) 426-2675. The rule for determining when notification is required is stated in 40 CFR 302.4 (section IV. D.3.b).|Releases of CERCLA hazardous substances are subject to the release reporting requirement of CERCLA section 103, codified at 40 CFR part 302, in addition to the requirements of 40 CFR part 355. Calcium arsenate is an extremely hazardous substance (EHS) subject to reporting requirements when stored in amounts in excess of its threshold planning quantity (TPQ) of 500 or 10,000 lbs. Extremely hazardous substances that are solids are subject to either of two threshold planning quantities ... The lower quantity applies only if the solid exists in powdered for and has a particle size less than 100 microns; or is handled in solution or in molten form; or meets the criteria for a National Fire Protection Association (NFPA) rating of 2, 3 or 4 for reactivity. If the solid does not meet any of these criteria, it is subject to the upper ... threshold planning quantity ... .
Toxicity
LD50 Rat female oral 298 mg/kg|LD50 Mouse oral 794 mg/kg|LD50 Rat oral 20 mg/kg|LD50 Rat skin 2400 mg/kg|For more Non-Human Toxicity Values (Complete) data for CALCIUM ARSENATE (6 total), please visit the HSDB record page.
INORGANIC ARSENICALS SUCH AS ... CALCIUM ARSENATE CA3(ASO4)2 HAVE BEEN USED FOR MANY YR AS SOIL STERILANTS ... THESE CMPD ARE MOST PERSISTENT SOIL STERILANTS & MAY REMAIN EFFECTIVE FOR ... AS LONG AS 5-8 YR ESPECIALLY IN AREAS OF LOW RAINFALL.|ARSENIC WAS FOUND IN SIGNIFICANT CONCN IN DRAINAGE & RUNOFF WHERE CALCIUM ARSENATE HAD BEEN APPLIED. DRAINAGE FROM PLOTS PREVIOUSLY CORED FOR SOIL SAMPLES CONTAINED CONCN OF 8 PPM. AFTER HEAVY RAIN, SHORTLY AFTER APPLICATION, RUNOFF WAS AS GREAT AS 14 PPM.
ADVERSE HEALTH EFFECTS HAVE BEEN REPORTED IN WORKERS INVOLVED IN THE PRODUCTION, PACKAGING, AND USE OF LEAD AND CALCIUM ARSENATE PESTICIDES.|Workers engaged in manufacture, formulation, and application of pesticides containing calcium arsenate.
Drug Information
FOLLOWING DIETARY ADMIN OF 215 MG/KG OF DIET AS CALCIUM ARSENATE ... FOR UP TO 52 DAYS IN RATS, HIGHEST ARSENIC LEVELS (146-537 UG/G DRY TISSUE) ... IN KIDNEYS & LIVER & RELATIVELY LOWER LEVELS IN HAIR, BRAIN, BONE, MUSCLE, & SKIN. LIVER & KIDNEY LEVELS WERE GREATER AFTER ADMIN OF CALCIUM ARSENATE THAN OF ARSENIC TRIOXIDE.|Hamsters were given weekly intratracheal instillations of ... calcium arsenate dust suspensions. Animals were killed at weekly intervals and the concn of arsenic was determined in lung, liver, and hair by atomic absorption spectrophotometry following wet digestion and arsine generation. Animals treated with calcium arsenate had concn of As in the lung about 100 times higher than that of animals given arsenic trisulfide and 1000 times higher than that of animals receiving arsenic trioxide. ... The substantial differentration in lung retention between these inorganic As cmpd is of importance for the design and interpretation of animal carcinogenicity tests involving the respiratory tract and could also have significance in human exposure situations.|Animal data have shown substantial differences in lung retention after intratracheal instillations of arsenic trisulfide, calcium arsenate and arsenic trioxide. Retention of ... arsenic trisulfide was 10 times higher compared to arsenic trioxide.
Commercial calcium arsenate contains 61% calcium arsenate and 9% calcium arsenite and an excess of lime and calcium carbonate.|The wettable powder, when made up in aq solution, should contain less than 0.5% of dissolved As2O5, which originates from impurities.
This material is extremely toxic; the probable oral lethal dose for humans is 5-50 mg/kg, or between 7 drops and 1 teaspoonful for a 150 lb. person. It is an irritant to eyes, respiratory tract, mouth and stomach. Damage to kidneys, liver and the nervous system have been reported. (Non-Specific -- Arsenic) Chronic exposure can cause bone marrow damage, often leading to aplastic anemia. There is epidemiological evidence that chronic ingestion of arsenic compounds causes a predisposition to skin cancers. (EPA, 1998)|Carcinogens
Warning: Effects usually appear within 30 minutes of exposure but may be delayed for several hours. Caution is advised. Signs and Symptoms of Acute Calcium Arsenate Exposure: Hypotension (low blood pressure), tachycardia (rapid heart rate), dehydration, intense thirst, difficulty swallowing, vomiting, abdominal pain, and diarrhea are among the first signs and symptoms noticed following acute calcium arsenate exposure. Headache, conjunctivitis (red, inflamed eyes), runny nose, and lacrimation (tearing) are also common. Garlic odor of breath and feces may be noted. Cardiovascular effects include shock, tachycardia (rapid heart rate), ventricular fibrillation, and other cardiac abnormalities. Pulmonary edema may occur. Altered mental status, seizures, and delirium are further complications of calcium arsenate exposure. Intense muscle cramping is common. Exposure to airborne dust is generally accompanied by irritation of exposed skin, eyes, and mucous membranes. Emergency Life-Support Procedures: Acute exposure to calcium arsenate may require decontamination and life support for the victims. Emergency personnel should wear protective clothing appropriate to the type and degree of contamination. Air-purifying or supplied-air respiratory equipment should also be worn, as necessary. Rescue vehicles should carry supplies such as plastic sheeting and disposable plastic bags to assist in preventing spread of contamination. Inhalation Exposure: 1. Move victims to fresh air. Emergency personnel should avoid self-exposure to calcium arsenate. 2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support. 3. RUSH to a health care facility! 4. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures. Dermal/Eye Exposure: 1. Remove victims from exposure. Emergency personnel should avoid self- exposure to calcium arsenate. 2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support. 3. Remove contaminated clothing as soon as possible. 4. If eye exposure has occurred, eyes must be flushed with lukewarm water for at least 15 minutes. 5. THOROUGHLY wash exposed skin areas with soap and water. 6. RUSH to a health care facility! 7. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures. Ingestion Exposure: 1. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer oxygen or other respiratory support. 2. RUSH to a health care facility! 3. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures. 4. Vomiting may be induced with syrup of Ipecac. If elapsed time since ingestion of calcium arsenate is unknown or suspected to be greater than 30 minutes, do not induce vomiting and proceed to Step 5.Ipecac should not be administered to children under 6 months of age.Warning: Ingestion of calcium arsenate may result in sudden onset of seizures or loss of consciousness. Syrup of Ipecac should be administered only if victims are alert, have an active gag-reflex, and show no signs of impending seizure or coma. If ANY uncertainty exists, proceed to Step 5.The following dosages of Ipecac are recommended: children up to 1 year old, 10 mL (1/3 oz); children 1 to 12 years old, 15 mL (1/2 oz); adults, 30 mL (1 oz). Ambulate (walk) the victims and give large quantities of water. If vomiting has not occurred after 15 minutes, Ipecac may be readministered. Continue to ambulate and give water to the victims. If vomiting has not occurred within 15 minutes after second administration of Ipecac, administer activated charcoal. 5. Activated charcoal may be administered if victims are conscious and alert. Use 15 to 30 g (1/2 to 1 oz) for children, 50 to 100 g (1-3/4 to 3-1/2 oz) for adults, with 125 to 250 mL (1/2 to 1 cup) of water. 6. Promote excretion by administering a saline cathartic or sorbitol to conscious and alert victims. Children require 15 to 30 g (1/2 to 1 oz) of cathartic; 50 to 100 g (1-3/4 to 3-1/2 oz) is recommended for adults. (EPA, 1998)
Fresh air, rest. Refer for medical attention.
Remove contaminated clothes. Rinse and then wash skin with water and soap. Seek medical attention if you feel unwell.
Rinse with plenty of water (remove contact lenses if easily possible). Refer for medical attention.
Vineyard workers in Germany and France have received heavy exposure to arsenical insecticides through inhalation of lead, calcium, and copper arsenate dust and through the ingestion of contaminated wine. The concurrence of arsenicism and lung cancer was observed in post mortem studies of those vineyard workers who showed cutaneous stigmata of arsenic toxicity at death: lung cancer occurred in 12 out of 27 men autopsied and liver hemangioendothelioma in two.|... OF COMPOUNDS TO WHICH SPRAYERS OF ORCHARDS ARE EXPOSED, CALCIUM ARSENATE IS THE MOST TOXIC; NEXT IS LEAD ARSENATE; & THIRD IS LEAD CARBONATE.
calcium arsenate
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.
Cough. Sore throat.
Redness. Pain.
Calcium arsenate Use and Manufacturing
... PRODUCED BY INTERACTION OF ARSENIC ACID & CALCIUM HYDROXIDE IN PROPORTIONS THAT YIELD ARSENATES MORE BASIC THAN CALCIUM HYDROGEN ARSENATE ...|Prepn: Les Veaux, US patent 2,715,562 (1955 to FMC).|... PRODUCED BY (A) THE OXIDATION OF A SODIUM ARSENITE SOLN IN AIR IN THE PRESENCE OF A CATALYST (COPPER SULFATE) & PRECIPITATION USING MILK OF LIME OR (B) THE ACTION OF ARSENIC ACID ON MILK OF LIME.|Interaction of calcium chloride and sodium arsenate
Calcium arsenate has been used extensively against certain insects affecting field crops, especially cotton. It cannot be used safely on apples, peaches, beans, and some other crops because of its burning effect on the foliage and fruit. It is banned by a number of countries. Insecticide; molluscicide.
(1978) PROBABLY GREATER THAN 4.54X10+5 G|(1983) NOT PRODUCED COMMERCIALLY IN USA|Arsenicals are still widely utilized inorganic insecticides. The USDA (1971) data showed that 9 million pounds of calcium and lead arsenate were produced in the United States in 1969.|In 1942, 38 million kilograms.
ESSENTIALLY 100% AS PESTICIDE|Became the most widely used insecticide during the first half of the 20th century.
USEPA/OPP Pesticide Code 013501; Trade Names: Pencal; Security (Trade name for lead arsenate also); Turf-Cal; Chip-Cal; SPRA-Cal.|GRADES OR PURITY: 70%, CONTAINING CALCIUM CARBONATE & CALCIUM HYDROXIDE (LIMESTONE & SLAKED LIME).|Grades: technical; chemically pure|Turf-Cal: contains 26% tricalcium arsenate, equivalent to 10% arsenic as metallic. No more than 5% arsenic is in the water soluble form.|THE COMMERCIAL GRADE IS A COMPLEX MOLECULAR MIXT CONTAINING 26% ARSENIC. IT IS OFTEN COLORED WITH SMALL AMT OF PINK DYE.
Arsenic acid (H3AsO4), calcium salt (2:3): ACTIVE|IT IS ... COMPATIBLE WITH MATERIALS SUCH AS LIME SULFUR. ... IT HAS METALLIC ARSENIC EQUIVALENT OF 25-30%, ABOUT A THIRD MORE THAN LEAD ARSENATES.|PRECISE NATURE OF COMPOUNDS PRESENT IN CALCIUM ARSENATE FOR CROP PROTECTION USE IS UNKNOWN BUT PHASE RULE STUDIES INDICATE PRESENCE OF SEVERAL BASIC CALCIUM ARSENATES, E.G. 3CA(ASO4)2.CA(OH)2|... Must be colored when used as a commercial product. Incompatability: Not miscible with oils and acidic preparations.
AOAC Method 921.05. Calcium Arsenate Pesticide Formulations. A reactant solution of known concentration (the titrant) is systematically added to and reacted with a solution of the analyte. The equivalence point or end point of the reaction and the amount of titrant added are measured. The concentration of the analyte in the solution is determined from the amount of titrant added. The end point may be detected by a color change in an indicator by eye, or by an electrode (pH meter). Detection limit is unspecified.
Health Hazards -> Carcinogens
Computed Properties
Molecular Weight:398.07
Hydrogen Bond Acceptor Count:8
Exact Mass:397.69028
Monoisotopic Mass:397.69028
Topological Polar Surface Area:173
Heavy Atom Count:13
Complexity:36.8
Covalently-Bonded Unit Count:5
Compound Is Canonicalized:Yes
Drug Function and Efficacy
Detoxification support and immune modulation
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