Melting point :-133°
Boiling point :−87.5 °C(lit.)
Density :0.491 (estimate)
vapor density :1.15 (vs air)
vapor pressure :3905kPa at 25℃
solubility :insoluble in H2O; slightly soluble in ethanol, ethyl ether
form :colorless gas
color :colorless gas; flammable
Water Solubility :0.26 volumes in H2O (20°C); insoluble hot H2O; slightly soluble alcohol, ether, cuprous chloride solutions [HAW93] [MER06]
Merck :13,7424
Exposure limits :TLV-TWA 0.42 mg/m³ (0.3 ppm) (ACGIH and OSHA); STEL 1.4 mg/m³ (1 ppm) (ACGIH); IDLH 200 ppm (NIOSH).
Dielectric constant :2.5（-60℃）
Stability :Stable, but pyrophoric - spontaneously flammable in air. Note the very wide explosion limits. Incompatible with oxidizing agents, halogens, nitric acid.
CAS DataBase Reference :7803-51-2(CAS DataBase Reference)
NIST Chemistry Reference :Phosphine(7803-51-2)
EPA Substance Registry System :Phosphine (7803-51-2)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H220 Extremely flammable gas Flammable gases Category 1 Danger P210, P377, P381, P403 H251 Self-heating; may catch fire Self-heating substances and mixtures Category 1 Danger H280 Contains gas under pressure; may explode if heated Gases under pressure Compressed gas Liquefied gas Dissolved gas Warning P410+P403 H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501 H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P403+P235 Store in a well-ventilated place. Keep cool. P410+P403 Protect from sunlight. Store in a well-ventilated place.