ICSC 0694 - PHOSPHINE

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PHOSPHINE	ICSC: 0694 (April 2013)
Phosphorus trihydride Hydrogen phosphide

CAS #: 7803-51-2

UN #: 2199

EC Number: 232-260-8

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Extremely flammable. May ignite spontaneously on contact with air. Gives off irritating or toxic fumes (or gases) in a fire. Gas/air mixtures are explosive.	NO open flames, NO sparks and NO smoking. NO contact with hot surfaces. Closed system, ventilation, explosion-proof electrical equipment and lighting.	Shut off supply; if not possible and no risk to surroundings, let the fire burn itself out. In other cases extinguish with powder, carbon dioxide. In case of fire: keep cylinder cool by spraying with water. Combat fire from a sheltered position.

AVOID ALL CONTACT! FIRST AID: USE PERSONAL PROTECTION. IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Headache. Dizziness. Nausea. Diarrhoea. Chest pain. Shortness of breath. Irregular heartbeat. Convulsions. Unconsciousness.	Use closed system or ventilation.	Fresh air, rest. Half-upright position. Administration of oxygen may be needed. Artificial respiration may be needed. Refer immediately for medical attention.
Skin	ON CONTACT WITH LIQUID: FROSTBITE.	Cold-insulating gloves. Protective clothing.	ON FROSTBITE: rinse with plenty of water, do NOT remove clothes. Refer for medical attention .
Eyes	ON CONTACT WITH LIQUID: FROSTBITE.	Wear face shield or eye protection in combination with breathing protection.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion		Wash hands before eating.

SPILLAGE DISPOSAL	CLASSIFICATION & LABELLING
Evacuate danger area! Consult an expert! Ventilation. Personal protection: chemical protection suit including self-contained breathing apparatus.	According to UN GHS Criteria Extremely flammable gas Contains gas under pressure; may explode if heated Fatal if inhaled Causes severe skin burns and eye damage Transportation UN Classification UN Hazard Class: 2.3; UN Subsidiary Risks: 2.1
STORAGE
Fireproof. Keep in a well-ventilated room.
PACKAGING

PHOSPHINE

ICSC: 0694

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS COMPRESSED LIQUEFIED GAS. Physical dangers The gas is heavier than air and may travel along the ground; distant ignition possible. Chemical dangers Decomposes on heating and on burning. This produces toxic fumes including phosphorus oxides. Reacts violently with air, oxygen, oxidants such as chlorine oxides, nitrogen oxides, metal nitrates, halogens and many other substances. This generates fire and explosion hazard. Attacks many metals.	Formula: PH₃ Molecular mass: 34.00 Boiling point: -87.7°C Melting point: -133°C Relative density (water = 1): 0.8 Density (gas): 1.53 kg/m³ Solubility in water, ml/100ml at 17°C: 26 (very poor) Vapour pressure, kPa at 20°C: 3488 Relative vapour density (air = 1): 1.18 Flash point: Flammable gas Auto-ignition temperature: 38°C Explosive limits, vol% in air: 1.6 - 100 (estimated)

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS COMPRESSED LIQUEFIED GAS.

Physical dangers
The gas is heavier than air and may travel along the ground; distant ignition possible.

Chemical dangers
Decomposes on heating and on burning. This produces toxic fumes including phosphorus oxides. Reacts violently with air, oxygen, oxidants such as chlorine oxides, nitrogen oxides, metal nitrates, halogens and many other substances. This generates fire and explosion hazard. Attacks many metals.

Formula: PH₃
Molecular mass: 34.00
Boiling point: -87.7°C
Melting point: -133°C
Relative density (water = 1): 0.8
Density (gas): 1.53 kg/m³
Solubility in water, ml/100ml at 17°C: 26 (very poor)
Vapour pressure, kPa at 20°C: 3488
Relative vapour density (air = 1): 1.18
Flash point: Flammable gas
Auto-ignition temperature: 38°C
Explosive limits, vol% in air: 1.6 - 100 (estimated)

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation. Effects of short-term exposure The substance is severely irritating to the respiratory tract. Inhalation of this gas may cause lung oedema. See Notes. Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the central nervous system, cardiovascular system, heart, gastrointestinal tract, liver and kidneys. This may result in impaired functions. Exposure above the OEL could cause unconsciousness and death. Medical observation is indicated.	Inhalation risk A harmful concentration of this gas in the air will be reached very quickly on loss of containment. Effects of long-term or repeated exposure Non-specific complaints like gastrointestinal disorders, headache, nausea etc. may occur.

EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is severely irritating to the respiratory tract. Inhalation of this gas may cause lung oedema. See Notes. Rapid evaporation of the liquid may cause frostbite. The substance may cause effects on the central nervous system, cardiovascular system, heart, gastrointestinal tract, liver and kidneys. This may result in impaired functions. Exposure above the OEL could cause unconsciousness and death. Medical observation is indicated.

Inhalation risk
A harmful concentration of this gas in the air will be reached very quickly on loss of containment.

Effects of long-term or repeated exposure
Non-specific complaints like gastrointestinal disorders, headache, nausea etc. may occur.

OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.05 ppm as TWA; (ceiling value): 0.15 ppm as STEL; A4 (not classifiable as a human carcinogen). MAK: 0.14 mg/m³, 0.1 ppm; peak limitation category: II(2); pregnancy risk group: C. EU-OEL: 0.14 mg/m³, 0.1 ppm as TWA; 0.28 mg/m³, 0.2 ppm as STEL

ENVIRONMENT
This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal.

NOTES
Turn leaking cylinder with the leak up to prevent escape of gas in liquid state. The technical product often ignites spontaneously at room temperature because of the presence of other phosphorus hydrides, especially diphosphine (CAS:13445-5-6) as impurities. Odourless when pure at concentrations up to 200 ppm (278 mg/m³) (a highly toxic level). Technical product has odour of garlic or decaying fish due to impurities. The odour warning when the exposure limit value is exceeded is insufficient. The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential. Immediate administration of an appropriate inhalation therapy by a doctor, or by an authorized person, should be considered.

NOTES

Turn leaking cylinder with the leak up to prevent escape of gas in liquid state.
The technical product often ignites spontaneously at room temperature because of the presence of other phosphorus hydrides, especially diphosphine (CAS:13445-5-6) as impurities.
Odourless when pure at concentrations up to 200 ppm (278 mg/m³) (a highly toxic level).
Technical product has odour of garlic or decaying fish due to impurities.
The odour warning when the exposure limit value is exceeded is insufficient.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.
Immediate administration of an appropriate inhalation therapy by a doctor, or by an authorized person, should be considered.

ADDITIONAL INFORMATION

EC Classification
Symbol: F+, T+, N; R: 12-17-26-34-50; S: (1/2)-28-36/37-45-61-63

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