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7719-12-2

Name Phosphorus trichloride
CAS 7719-12-2
EINECS(EC#) 231-749-3
Molecular Formula Cl3P
MDL Number MFCD00011438
Molecular Weight 137.33
MOL File 7719-12-2.mol

Chemical Properties

Appearance Phosphorus trichloride is a colorless to yellow, fuming liquid. Odor like hydrochloric acid.
Melting point  -112 °C
Boiling point  74-78 °C(lit.)
density  1.574 g/mL at 25 °C
vapor density  4.75 (vs air)
vapor pressure  23.32 psi ( 55 °C)
refractive index  n20/D 1.5148(lit.)
Fp  76°C
storage temp.  Store at RT.
solubility  Soluble in benzene, carbon sulfide, ether, chloroform, carbon tetrachloride.
form  Liquid
color  Yellow
Specific Gravity approximate 1.6
Odor Pungent, irritating odor
PH Range 1
Stability: Stable, but light sensitive. Incompatible with water, many metals, fluorine, acids, variety of organic materials including acids, alcohols and reducing agents. Reaction with water is violent and yields toxic gas.
Water Solubility  reacts
Sensitive  Moisture Sensitive
Merck  14,7358
BRN  969177
Dielectric constant 3.7(18℃)
Exposure limits TLV-TWA 1.12 mg/m3 (0.2 ppm) (ACGIH), 2.8 mg/m3 (0.5 ppm) (OSHA).
CAS DataBase Reference 7719-12-2(CAS DataBase Reference)
NIST Chemistry Reference Phosphorus trichloride(7719-12-2)
EPA Substance Registry System 7719-12-2(EPA Substance)

Safety Data

Hazard Codes  T+,C
Risk Statements 
R14:Reacts violently with water.
R26/28:Very Toxic by inhalation and if swallowed .
R29:Contact with water liberates toxic gas.
R35:Causes severe burns.
R48/20:Harmful: danger of serious damage to health by prolonged exposure through inhalation .
R40:Limited evidence of a carcinogenic effect.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S7/8:Keep container tightly closed and dry .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add-Never use water) .
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
RIDADR  UN 3390 6.1/PG 1
WGK Germany  2
RTECS  TH3675000
21
TSCA  Yes
HazardClass  6.1
PackingGroup  I
HS Code  28121043
Safety Profile
Poison by ingestion and inhalation. A corrosive irritant to skin, eyes (at 2 ppm), and mucous membranes. Potentially explosive reaction with chlorobenzene + sodtum, hethyl sulfoxide, molten sodmm, chromyl chloride, nitric acid, sodium peroxide, oxygen (above 100℃), tetravinyl lead. Reacts with carboxylic acids (e.g., acetic acid) to form violently unstable products. Violent reaction or ignition with Al, chromium pentafluoride, dtallyl phosphite + allyl alcohol, F2, hexa fluoroisoprop ylideneaminolithium, hydroxylamine, iodine chloride, PbO2, HNO2, organic matter, potassium, selenium dioxide, sulfur acids (e.g., sulfuric acid, fluorosulfuric acid, oleum). Violent reaction with water evolves hydrogen chloride and diphosphane gas, that then ignite. Incompatible with metals or oxidants. Wdl react with water, steam, or acids to produce heat and toxic and corrosive fumes; can react with oxidzing materials. To fight fire, use CO2, dry chemical. Used as a chlorinating agent, catalyst, and chemical intermedtate. Dangerous; when heated to decomposition it emits highly toxic fumes of Cland POx.
Hazardous Substances Data 7719-12-2(Hazardous Substances Data)
IDLA 25 ppm

Hazard Information

Material Safety Data Sheet(MSDS)

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