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MAGNESIUM PHOSPHIDE
ICSC: 0744
Peer-Review Status: 26.03.1998 Validated
Trimagnesium diphosphide 
CAS #: 12057-74-8 RTECS #: OM4200000
UN #: 2011
EC #: 015-005-00-3
EINECS #: 235-023-7
    Formula: Mg3P2 / Mg=P-Mg-P=Mg
Molecular mass: 134.9

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Not combustible but forms flammable gas on contact with water or damp air. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames, NO sparks and NO smoking. NO contact with water.  Use carbon dioxide, dry sand. NO water. 
EXPLOSION Risk of fire and explosion on contact with water or damp air.     
 
EXPOSURE   PREVENT DISPERSION OF DUST! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!  IN ALL CASES CONSULT A DOCTOR! 
Inhalation Abdominal pain. Burning sensation. Cough. Dizziness. Lethargy. Headache. Laboured breathing. Nausea. Sore throat.  Use local exhaust or breathing protection.  Fresh air, rest. Artificial respiration may be needed. Refer for medical attention. 
Skin   Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Redness. Pain.  Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Convulsions. Diarrhoea. Unconsciousness. Vomiting. Further see Inhalation.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Rest. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Do NOT wash away into sewer. Sweep spilled substance into covered sealable containers. Carefully collect remainder. Then store and dispose of according to local regulations. Personal protection: gas-tight chemical protection suit including self-contained breathing apparatus.  Do not transport with food and feedstuffs. 
EC Classification
Symbol: F, T+, N; R: 15/29-28-50; S: (1/2)-22-43-45-61 
UN Classification
UN Hazard Class: 4.3; UN Subsidiary Risks: 6.1; UN Pack Group: I 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-43GWT2-I.  Fireproof. Provision to contain effluent from fire extinguishing. Store in sealed; polyethylene-lined drums. Separated from food and feedstuffs. See Chemical Dangers. Dry. Well closed. 

IMPORTANT DATA
Physical State; Appearance
YELLOW-TO-GREEN CRYSTALS. 

Physical dangers
No data. 

Chemical dangers
Decomposes on heating. This produces toxic fumes including phosphorus oxides and phosphine. This increases fire hazard. Reacts with water and moisture in the air. Reacts violently with acids. This produces phosphine. This generates fire and toxic hazard. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

Routes of exposure
The substance can be absorbed into the body by inhalation of dust and by ingestion. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed. 

Effects of short-term exposure
The substance is irritating to the eyes and respiratory tract. See Notes. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Melting point: >750°C
Density: 2.1 g/cm³
Solubility in water: reaction 
Avoid release to the environment in circumstances different to normal use. 

NOTES
Reacts violently with fire extinguishing agents such as water.
Do NOT take working clothes home.
Detiaphos, Mag-disc, Magtoxin, and Phostoxin are trade names.
Also consult ICSC 0694 Phosphine.
Card has been partly updated in October 2004.
See sections Occupational Exposure Limits, EU classification, Emergency Response. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations