Magnesium perchlorate

223.2

221.88200

233-108-3

7N77Z541YF

1475

White, granular, or flaky powder

149

0.42860

White Solid

2.2 g/cm³

250 °C (decomp)

Decomposes above 482.0° F (USCG, 1999)

Magnesium perchlorate is soluble in water, ethanol.99.3 G/100 CC OF H20 & 23.96 G/100 CC OF ALCOHOL, EACH AT 25 DEG C

Keep tightly closed.

Abdominal cavity-mouse LD50: 1500 mg/kg

Easy to catch fire due to friction; combustible with flammable materials such as organic matter, reducing agent, sulfur, phosphorus and metal powder; burning produces toxic chloride fumes

If large quantities of the material are involved in the fire or the combustible material is finely divided an explosion may result.

Odorless

Crystallizes from water with 6H2O; very hygroscopic; decomposes above 250 °C; dissolves in water with evolution of considerable amount of heat|Oxidizing agent|Heat of solution: -260 Btu/lb= -140 cal/g= -6.0X10+5 J/kg

Deliquescent. Water soluble

Oxidizing Agents, Strong

Explosive

MAGNESIUM PERCHLORATE is a strong oxidizing agent. Decomposes at 185-190°C [Hawley]. Noncombustible but accelerates the burning of combustible materials. If large quantities are involved in the fire or the combustible material is finely divided an explosion may result. Avoid contact with mineral acids because of the danger of explosion. In the preparation of anhydrous dimethyl sulfoxide by vacuum distillation from anhydrous magnesium perchlorate, an explosion occurred [MCA Case History 1187, 1966]. Drying ethylene oxide with magnesium perchlorate resulted in an explosion [NSC Newsletter. Chem. Soc. 1959]. Magnesium perchlorate used in drying hydrocarbons exploded when heated to 220°C [Ind. & Eng. News 17:70. 1939]. As soon as trimethyl phosphite contacted a small amount of magnesium perchlorate in a flask, there was a flash and an explosion that shattered the flask [Allison 1968].

II

5.1

UN 1475 5.1/PG 2

3

8-36/37/38-14/15

17-26-27-36/37/39-43-7/8

SC8925000

O,Xi

Treasury ventilation; light loading and unloading; separate storage from organic matter, reducing agent, sulfur and phosphorus combustibles

Mix with sugar, or detonate by contact with hot copper tubes; explosive when in contact with organic substances, reducing agents, sulfur, phosphorus and other flammable substances

Stable, but moisture sensitive. Oxidizer - contact with combustible material may lead to fire. Incompatible with reducing agents, organic materials, trimethyl phosphate, powdered metals, strong acids, phosphorus.

P220-P261-P305 + P351 + P338

H272-H315-H319-H335

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.

The anhydrous salt /of magnesium perchlorate/ which had been used for drying unsaturated hydrocarbons exploded on heating to 220 °C for reactivation. The need to avoid contact with acidic materials is stressed. /Magnesium perchlorate, anhydrous salt/|Intensive drying of ammonia gas by passing it over ... /magnesium perchlorate/ in a steel drying tube led to an exotherm, followed by a violent explosion.|Anhydrous magnesium perchlorate was used to dry thoroughly an ethereal soln of an arylhydrazine. During evaporation of the filtered soln it exploded completely and violently. Magnesium perchlorate is rather soluble in ether and may contain traces of free perchloric acid (probably in the anhydrous form, as the magnesium salt is a powerful dehydrator).|Magnesium perchlorate contained in a glass tube between wads of cotton wool was used to dry a mixture of oxygen and dinitrogen tetraoxide. After several days the drying tube exploded violently. It seems probable that the acidic fumes and cotton produced cellulose nitrate, aided by the dehydrating action of the perchlorate.|For more Hazardous Reactivities and Incompatibilities (Complete) data for MAGNESIUM PERCHLORATE (17 total), please visit the HSDB record page.

Behavior in Fire: Can form explosive mixture with combustible material or finely powdered metals. Increases the intensity of fires. (USCG, 1999)

|Danger|H271 (16.39%): May cause fire or explosion; strong Oxidizer [Danger Oxidizing liquids; Oxidizing solids]|P210, P220, P221, P261, P264, P270, P271, P280, P283, P301+P312, P302+P352, P304+P340, P305+P351+P338, P306+P360, P312, P321, P330, P332+P313, P337+P313, P362, P370+P378, P371+P380+P375, P403+P233, P405, and P501|Aggregated GHS information provided by 61 companies from 9 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|Warning|H302: Harmful if swallowed [Warning Acute toxicity, oral]|P264, P270, P280, P301+P312, P305+P351+P338, P330, P337+P313, and P501|H272: May intensify fire; oxidizer [Danger Oxidizing liquids; Oxidizing solids]|P210, P220, P221, P280, P370+P378, and P501

Excerpt from ERG Guide 140 [Oxidizers]: 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. LARGE SPILL: Consider initial downwind evacuation for at least 100 meters (330 feet). 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 140 [Oxidizers]: Keep combustibles (wood, paper, oil, etc.) away from spilled material. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Do not get water inside containers. SMALL DRY SPILL: With clean shovel, place material into clean, dry container and cover loosely; move containers from spill area. SMALL LIQUID SPILL: Use a non-combustible material like vermiculite or sand to soak up the product and place into a container for later disposal. LARGE SPILL: Dike far ahead of liquid spill for later disposal. Following product recovery, flush area with water. (ERG, 2016)

U.S. Bu. Mines approved respirator; chemical safety goggles; face shield (USCG, 1999)|Personal protective equipment /incl NIOSH/ approved respirator; chemical safety goggles; face shield.|Personnel protection: Wear appropriate chemical protective gloves, boots and goggles. ...

POWERFUL OXIDIZING MATERIAL; MIXTURES WITH COMBUSTIBLE ORG OR OTHER EASILY OXIDIZABLE MATERIALS...ARE IGNITED READILY BY FRICTION OR HEAT.|It is noncombustible but it will accelerate the burning of combustible materials.

If large quantities of the material are involved in the fire or the combustible material is finely divided an explosion may result.

If material on fire or involved in fire: Flood with water. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.|Evacuation: If fire becomes uncontrollable - consider evacuation of one-half (1/2) mile radius.

IMMEDIATELY REMOVE & CAREFULLY DISPOSE OF ANY SPILLED PERCHLORATE.

If material not on fire and not involved in fire: Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers.|Personnel protection: ... 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. Wear positive pressure self-contained breathing apparatus when fighting fires involving this material.|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.

/GUIDE 140: OXIDIZERS/ Fire or Explosion: These substances will accelerate burning when involved in a fire. Some may decompose explosively when heated or involved in a fire. May explode from heat or contamination. Some will react explosively with hydrocarbons (fuels). May ignite combustibles (wood, paper, oil, clothing, etc.). Containers may explode when heated. Runoff may create fire or explosion hazard.|/GUIDE 140: OXIDIZERS/ Health: Inhalation, ingestion or contact (skin, eyes) with vapors or substance may cause severe injury, burns or death. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may cause pollution.|/GUIDE 140: OXIDIZERS/ Public Safety: CALL Emergency Response Telephone Number on Shipping Paper first. If Shipping Paper not available or no answer, refer to appropriate telephone number listed on the inside back cover. 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. Keep unauthorized personnel away. Stay upwind. Keep out of low areas. Ventilate closed spaces before entering.|/GUIDE 140: OXIDIZERS/ 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 will only provide limited protection.|For more DOT Emergency Guidelines (Complete) data for MAGNESIUM PERCHLORATE (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 of dust irritates mucous membranes. Contact with eyes or skin causes irritation. 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.|Can cause irritation of skin, and mucous membranes.

| 1 - Materials that, under emergency conditions, can cause significant irritation.| 0 - Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand.| 0 - Materials that in themselves are normally stable, even under fire conditions.

moderately toxic

LD50 Mouse intraperitoneal 1500 mg/kg

Grade or purity: Pure anhydrous; 65-68% solution of hexahydrate in water.

Inhalation of dust irritates mucous membranes. Ingestion of large amounts may be fatal; immediate symptoms include adominal pains, nausea and vomiting, diarrhea, pallor, blueness, shortness of breath, unconsciousness. Contact with eyes or skin causes irritation. (USCG, 1999)

INHALATION: remove victim to fresh air; get medical attention if irritation persists. INGESTION: give large amount of water; induce vomiting; call a physician. EYES: flush with copious quantities of water for at least 15 min.; call physician. SKIN: flush with water. (USCG, 1999)

Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. 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 normal saline during transport ... . Do not use emetics. 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 ... . /Magnesium and Related Compounds/|Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious or in severe respiratory distress. Positive pressure ventilation techniques with a bag valve mask device may be beneficial. Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start an IV with D5W /SRP: "To keep open", minimal flow rate/. Use lactated Ringer's if signs of hypovolemia are present. Watch for signs of fluid overload. Consider drug therapy for pulmonary edema ... . For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors for hypotension with a normal fluid volume. Watch for signs of fluid overload ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Magnesium and Related Compounds/|Basic treatment: Establish a patent airway. Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Anticipate seizures and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with normal saline during transport ... . Do not use emetics. 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 ... . /Chlorates and Related Compounds/|Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious. Start an IV with D5W /SRP: "To keep open", minimal flow rate/. Use lactated Ringer's if signs of hypovolemia are present. Watch for signs of fluid overload. Treat seizures with diazepam ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Chlorates and Related Compounds/

magnesium perchlorate