Chromic acid (H2CrO4), chromium(3+) salt (3:2)

751.96

751.41700

246-356-2

H8I9RSM881

3077

Dark purple/black granular solid, with an amorphous non-crystalline structure

287.91000

-2.04120

2.269 at 20 deg C

>300 deg C (capillary method according to EU Method A1)

Soluble in water

Non-combustible; toxic chromium-containing fumes produced in the fire; combustion-supporting

Chromic acid, chromium(3+) salt is a mixed chromium III, chromium VI salt formed when chromic acid solution is partially reduced.|Chromium forms a number of compounds in various oxidation states. Those of 2+ (chromous), 3+ (chromic) and 6+ (chromates) are the most important /Chromium, alloys and cmpd/|Chromium(III) compounds are reduced to Cr(II) compounds by hypophosphites, electrolysis, or reducing metals, such as zinc, magnesium, & aluminum in acid soln (although it should be noted that Cr(II) compounds are stable only in the absence of air). In basic solution, Cr(III) is readily oxidized to chromium oxide (CrO4(-2)) by hypochlorite, hypobromite, peroxide, & oxygen under pressure at high temperature. In acid solution, Cr(III) is difficult to oxidize & needs strong oxidizing agents, such as concentrated perchloric acid, sodium bismuthate, & permanganate. /Trivalent chromium/|Cr(III) is the most stable oxidation state of chromium & is always present as a coordination complex /Trivalent chromium/

II

5.1

3085

45-8-35-43-50/53

53-45-60-61

O,T,C,N

Treasury is low temperature, ventilated, dry; stored separately from food raw materials, reducing agents, organic matter

P201, P202, P260, P261, P264, P270, P271, P272, P273, P280, P281, P284, P285, P301+P310, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P304+P341, P305+P351+P338, P308+P313, P310, P312, P314, P320, P321, P322, P330, P333+P313, P342+P311, P363, P391, P403+P233, P405, P501

H301

Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number D007, must conform with USEPA regulations in storage, transportation, treatment and disposal of waste. /Chromium/|SRP: Wastewater from contaminant suppression, cleaning of protective clothing/equipment, or contaminated sites should be contained and evaluated for subject chemical or decomposition product concentrations. Concentrations shall be lower than applicable environmental discharge or disposal criteria. Alternatively, pretreatment and/or discharge to a permitted wastewater treatment facility is acceptable only after review by the governing authority and assurance that "pass through" violations will not occur. Due consideration shall be given to remediation worker exposure (inhalation, dermal and ingestion) as well as fate during treatment, transfer and disposal. If it is not practicable to manage the chemical in this fashion, it must be evaluated in accordance with EPA 40 CFR Part 261, specifically Subpart B, in order to determine the appropriate local, state and federal requirements for disposal.|The following wastewater treatment technology has been investigated for chromium: Concentration process: Biological Treatment. /Chromium/|The following wastewater treatment technology has been investigated for chromium: Concentration process: Chemical Precipitation. /Chromium/|For more Disposal Methods (Complete) data for Chromium (III) chromate (9 total), please visit the HSDB record page.

Very powerful oxidizer|Combustible, organic, or other readily oxidizable materials (paper, wood, sulfur, aluminum, plastics, etc.); corrosive to metals. /Chromic acid and chromates/|Hydrazine is decomposed explosively by chromates and chromic anhydride. /Chromates/

|Danger|H271: May cause fire or explosion; strong Oxidizer [Danger Oxidizing liquids; Oxidizing solids]|P201, P202, P210, P220, P221, P260, P261, P264, P272, P273, P280, P281, P283, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P306+P360, P308+P313, P310, P321, P333+P313, P363, P370+P378, P371+P380+P375, P391, P405, and P501|H271 (100%): May cause fire or explosion; strong Oxidizer [Danger Oxidizing liquids; Oxidizing solids]|Aggregated GHS information provided by 130 companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|P201, P202, P210, P220, P221, P260, P261, P264, P270, P271, P272, P273, P280, P281, P283, P284, P285, P301+P310, P301+P330+P331, P302+P352, P303+P361+P353, P304+P340, P304+P341, P305+P351+P338, P306+P360, P308+P313, P310, P312, P314, P320, P321, P322, P330, P333+P313, P342+P311, P363, P370+P378, P371+P380+P375, P391, P403+P233, P405, and P501

Impervious gloves, aprons, and footwear shall be worn at operations where solutions of chromium (VI) may contact the skin. Protective gloves shall be worn at operations where dry compounds of chromium (VI) are handled and may contact the skin. /Cr(VI)/|Protective clothing: Coveralls or other full-body protective clothing shall be worn in areas where there is occupational exposure to chromium (VI). Protective clothing shall be changed at least daily at the end of the shift and more frequently if it should become grossly contaminated. /Cr(VI)/|Respirator Recommendations: At concentrations above NIOSH REL, or where there is no REL, at any detectable concentration: /Chromic acid and chromates/[Table#4331]|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. /Chromic acid and chromates/|For more Personal Protective Equipment (PPE) (Complete) data for Chromium (III) chromate (11 total), please visit the HSDB record page.

Respiratory protection from soluble chromic and chromous salts while fighting fires: self-contained breathing apparatus with a full facepiece operated in pressure-demand or other positive pressure mode. /Sol chromic & chromous salts/|/When fire fighting wear/ self-contained breathing apparatus, with a full facepiece, operated in pressure-demand or other positive pressure mode. /Chromic acid & chromates/

Cr(VI) cmpd in waste sludge are completely removed by redn by carbon at 600 °C. /Chromium VI/|Persons not wearing protective equipment and clothing should be restricted from areas of spills until cleanup has been completed. If chromic acid or chromates are spilled, the following steps should be taken: 1. Ventilate area of spill. 2. Collect spilled material in the most convenient and safe manner and deposit in sealed containers for reclamation or for disposal in a secured sanitary landfill. Liquid containing chromic acid or chromates should be absorbed in vermiculite, dry sand, earth, or a similar material. /Chromic acid and chromates/

Work clothing that becomes wet or significantly contaminated should be removed and replaced. /Chromic acid and cromates; Chromium(II) compounds (as Cr); Chromium(III) compounds/|The worker should immediately wash the skin when it becomes contaminated. /Chromic acid and chromates; Chromium(II) compounds (as Cr); Chromium(III) compounds/|Workers whose clothing may have become contaminated should change into uncontaminated clothing before leaving the work premises. /Chromic acid and cromates/|SRP: Contaminated protective clothing should be segregated in a manner such that there is no direct personal contact by personnel who handle, dispose, or clean the clothing. The completeness of the cleaning procedures should be considered before the decontaminated protective clothing is returned for reuse by the workers. Contaminated clothing should not be taken home at the end of shift, but should remain at employee's place of work for cleaning.

Chromic acid mist & chromate dusts may cause severe irritation of the nose, throat, bronchial tubes, and lung. /Chromic acid mist & chromate dusts/|Eczematous dermatitis due to trivalent chromium compounds has been reported. /Trivalent chromium compounds/

Permissible Exposure Limit: Table Z-1 8-hr Time Weighted Avg: 0.5 mg/cu m. /Chromium(III) compounds, as Cr/|Permissible Exposure Limit: Table Z-2 Acceptable Ceiling Concentration: 1 mg/10 cu m. /Chromic acid and chromates (as CrO3)/

Recommended Exposure Limit: 10-hour Time-Weighted Average: 0.5 mg/cu m. /Chromium(III) compounds (as Cr)/

D007; A waste containing chromium 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. /Chromium/

D007; A solid waste containing chromium may or may not become characterized as a hazardous waste when subjected to the Toxicity Characteristic Leaching Procedure listed in 40 CFR 261.24, and if so characterized, must be managed as a hazardous waste. /Chromium/

highly toxic

IDENTIFICATION AND USE: Chromic chromate is a dark purple or black granular solid. It is used as corrosion inhibitor. HUMAN EXPOSURE AND TOXICITY: Fatal case of nephritis was described following treatment of carcinoma of the face with crystals of chromic acid. Kidneys showed extensive lesions, especially in convoluted tubules. ANIMAL STUDIES: There is no data available.

According to the 2012 TSCA Inventory Update Reporting data, 1 reporting facilities estimate the number of persons reasonably likely to be exposed during the manufacturing, processing, or use of chromium (III) chromate is CBI (confidential business information) workers per plant; the data may be greatly underestimated due to confidential business information (CBI) or unknown values(1).|Potential identified sources of occupational exposure to chromium (III) chromate within the manufacturing process are the following: use in closed continuous process but with occasional exposure (during sampling, maintenance...), transfer (charging, discharging, mixing) of substance or preparation from/to containers and vessels (manual or automatic), handling(1).

/SRP:/ Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Inorganic acids and related compounds/|/SRP:/ Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist respirations if needed. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. Activated charcoal is not effective. For ingestion, rinse mouth and administer 5 mL/kg up to 200 mL of water for dilution if the patient can swallow, has a strong gag reflex, and does not drool ... . Do not attempt to neutralize because of exothermic reaction. Cover skin burns with dry, sterile dressings after decontamination ... . /Inorganic acids and related compounds/|/SRP:/ Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Early intubation, at the first sign of upper airway obstruction, may be necessary. Positive-pressure ventilation techniques with a bag valve mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Consider administering a beta agonist such as albuterol for severe bronchospasm ... . Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's(LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Inorganic acids and related compounds/|Emergency and supportive measures. 1. Inhalation. Give supplemental oxygen. Treat wheezing and monitor the victim closely for delayed-onset noncardiogenic pulmonary edema. Delays in the onset of pulmonary edema of up to 72 hours have been reported after inhalation of concentrated solutions of chromic acid. 2. Ingestion. a. Diluted immediately with water. treat hemorrhagic gastroenteritis with aggressive fluid and blood replacement. Consider early endoscopy to assess the extent of esophageal or gastric injury. b. Treat hemoglobinuria resulting from hemolysis with alkaline diuresis as far rhabdomyolysis. Treat methemoglobinemia if it occurs. /Chromium/|For more Antidote and Emergency Treatment (Complete) data for Chromium (III) chromate (8 total), please visit the HSDB record page.

Paint and coating manufacturing|Chromic acid (H2CrO4), chromium(3+) salt (3:2): ACTIVE|Produced in Europe by manufacturers located in France, Spain, Germany, Italy and United Kingdom