Magnesium phosphide

Base Information

• Chemical Name: Magnesium phosphide
• CAS No.: 12057-74-8
• Molecular Formula: Mg3P2
• Molecular Weight: 134.87
• Mol file: 12057-74-8.mol

Synonyms:DetiaphosR;Magtoxin;Trimagnesium diphosphide;

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Chemical Property of Magnesium phosphide

Chemical Property:

• Appearance/Colour: white crystalline solid
• Melting Point: >750oC
• Boiling Point: 56-57°C10mm Hg(lit.)
• Flash Point: 135°F
• PSA: 46.94000
• Density: 0.985g/mLat 25°C(lit.)
• LogP: 1.18700
• Water Solubility.: decomposed by H2O [KIR82]

Purity/Quality:

Safty Information:

• Pictogram(s): F, T+, N
• Hazard Codes: F,T+,N
• Statements: 15/29-28-50
• Safety Statements: 22-43-45-61

MSDS Files:

SDS file from LookChem

Useful:

• Description: Magnesium phosphide has the formula of Mg3P2 and themolecularweight of 134.9456 g/mol.It is a yellow cubic crystal having a density of 2.06 g/cm. It reacts violently with water and may ignite upon contact with air. It is toxic by ingestion. It has a slight odor of garlic. It is not combustible but forms a flammable gas on contact with water or damp air: Mg3P2 (solid) + 6H2O (liq)?3Mg(OH)2 (solid) + 2PH3 (gas) Mg3P2 burns in air or oxygen at a dull red heat to form a phosphate, and reacts with chlorine gas to form: Mg3P2 (solid) + Cl2?MgCl2 + PCl3
• Uses: Magnesium phosphide has found several uses in industry. It reacts with moisture in the atmosphere to produce phosphine gas which is the substance that is active as a pesticide to control insects and rodents. It is primarily used for indoor fumigation of raw agricultural commodities, animal feeds, processed food commodities, and nonfood commodities in sealed containers or structures, and for outdoor fumigation of burrows to control rodents and moles in nondomestic areas, noncropland, and agricultural areas. Aluminum and magnesium phosphide are formulated as tablets, pellets, impregnated materials and dusts. Aluminum and magnesium phosphide are restricted use chemicals. With magnesium phosphide, a fumigant is available which can be used for fumigating tobacco even at low temperatures.Magnesium phosphide treatment of dried-fig stacks at 600 and 1000 ppm phosphine for 3 days under tarpaulin were compared with the standard method of control, Methyl bromide. The tested concentrations and exposure periods for Mg3P2 provided 100% mortality in test insects and no negative effect on fruit quality for 9 months in storage under ambient conditions. In contrast, fruit quality with CH3Br did not match that of PH3-treated fruit. Magnesium phosphide has also been used to control insects in stored almonds, barley, brazil nuts, cashews, cocoa beans, coffee beans, corn, cottonseed, dates, filberts, flower seed, grass seed,millet,oats, peanuts, pecans, pistachio nuts, popcorn, rice, rye, sorghum, soybeans, sunflower seed, triticale, walnuts, wheat, vegetable seed, animal feed or feed ingredients.