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12057-74-8

12057-74-8 Structure

12057-74-8 Structure
IdentificationBack Directory
[Name]

Magnesium phosphide
[CAS]

12057-74-8
[EINECS(EC#)]

235-023-7
[Molecular Formula]

Mg3P2
[MDL Number]

MFCD00049484
[MOL File]

12057-74-8.mol
[Molecular Weight]

134.86
Chemical PropertiesBack Directory
[density ]

2.060
[form ]

yellow cubic crystals
[Water Solubility ]

decomposed by H2O [KIR82]
[EPA Substance Registry System]

Magnesium phosphide (Mg3P2)(12057-74-8)
Hazard InformationBack Directory
[Chemical Properties]

shiny grayish yellow; stable in dry air; decomposed by moisture; can be prepared directly from magnesium and phosphorus; used with igniting agent such as 1% HNO3 in sea flares [KIR82]
[General Description]

Magnesium phosphide is a white crystalline solid. Magnesium phosphide reacts violently with water and may ignite upon contact with air. Magnesium phosphide is toxic by ingestion. Magnesium phosphide is used to make other chemicals.
[Air & Water Reactions]

Decomposed by water or moisture in air evolving toxic phosphine and diphosphine, that often ignites [Douda 1966]. May ignite upon contact with air.
[Reactivity Profile]

Magnesium phosphide is a strong reducing agent. Nitric acid oxidizes Magnesium phosphide with incandescence [Mellor 8:842. 1946-47]. Magnesium phosphide ignites on heating with chlorine, bromine, or iodine vapors, [Mellor, 1940, Vol. 8, 842]. Magnesium phosphide reacts vigorously with most oxidants.
Magnesium phosphide and Magtoxin have not been reported as flammable chemical substances. However, they react readily with water to produce hydrogen phosphide (phosphine, PH3) gas, which may ignite spontaneously in air. Magnesium phosphide is stable to most chemical reactions, except for hydrolysis. Magtoxin, Fumi-Cel, and Fumi-Strip will react with moist air, liquid water, acids, and some other liquids to produce toxic and flammable hydrogen phosphide gas. Magnesium phosphide is more reactive than aluminium phosphide and will liberate hydrogen phosphide more rapidly and more completely at lower temperatures and humidities. Magnesium phosphide is not combustible but forms flammable gas on contact with water or damp air. Magnesium phosphide gives off irritating or toxic fumes (or gases) in a fire and on contact with water or damp air may cause explosion hazard.
[Health Hazard]

Highly toxic: contact with water produces toxic gas, may be fatal if inhaled. Inhalation or contact with vapors, substance or decomposition products may cause severe injury or death. May produce corrosive solutions on contact with water. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution.
[Fire Hazard]

Produce flammable and toxic gases on contact with water. May ignite on contact with water or moist air. Some react vigorously or explosively on contact with water. May be ignited by heat, sparks or flames. May re-ignite after fire is extinguished. Some are transported in highly flammable liquids. Containers may explode when heated. Runoff may create fire or explosion hazard.
Safety DataBack Directory
[Hazard Codes ]

F,T+,N
[Risk Statements ]

15/29-28-50
[Safety Statements ]

22-43-45-61
[RIDADR ]

UN 2011
[HazardClass ]

4.3
[PackingGroup ]

I
[Safety Profile]

A poison. Flammable when exposed to heat, flame, or oxidizing materials. Ignites when heated in chlorine, bromine, or iodine vapors. Incandescent reaction with nitric acid. Reacts with water to evolve flammable phosphme gas. When heated to decomposition it emits toxic fumes of POx and phosphine. See also MAGNESIUM and PHOSPHIDES.
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

Magnesium phosphide(12057-74-8).msds
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