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Name Trichlorosilane
CAS 10025-78-2
EINECS(EC#) 233-042-5
Molecular Formula Cl3HSi
MDL Number MFCD00011518
Molecular Weight 135.45
MOL File 10025-78-2.mol

Chemical Properties

Appearance Clear liquid with acrid odor of hydrogen chloride
Melting point  -127 °C
mp  -127 °C
Boiling point  32-34 °C(lit.)
bp  32-34 °C(lit.)
density  1.342 g/mL at 25 °C(lit.)
vapor density  1 (vs air)
vapor pressure  9.75 psi ( 20 °C)
refractive index  1.4-1.402
Fp  7 °F
storage temp.  Refrigerator
solubility  Soluble in benzene, ether, heptane, chloroform and carbon tetrachloride.
form  Liquid
color  Colorless
Specific Gravity 1.342
Odor Sharp, choking, like hydrochloric acid.
Stability: Stable, but extremely flammable. Pyrophoric-spontaneously ignites in air. Explosion hazard in air-note wide explosion limits. Reacts violently with water. Incompatible with moisture, acids, bases, strong oxidizing agents, alcohols, amines.
explosive limit 70%
Water Solubility  decomposes
Sensitive  Air & Moisture Sensitive
Hydrolytic Sensitivity 8: reacts rapidly with moisture, water, protic solvents
Merck  14,9646
CAS DataBase Reference 10025-78-2(CAS DataBase Reference)
Storage Precautions Store under inert gas
NIST Chemistry Reference Trichlorosilane(10025-78-2)
EPA Substance Registry System 10025-78-2(EPA Substance)

Safety Data

Hazard Codes  F+,C
Risk Statements 

R12:Extremely Flammable.
R14:Reacts violently with water.
R17:Spontaneously flammable in air.
R20/22:Harmful by inhalation and if swallowed .
R29:Contact with water liberates toxic gas.
R35:Causes severe burns.

Safety Statements 

S16:Keep away from sources of ignition-No smoking .
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 .
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) .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S7/9:Keep container tightly closed and in a well-ventilated place .

RIDADR  UN 1295 4.3/PG 1
WGK Germany  1
RTECS  VV5950000
HazardClass  4.3
PackingGroup  I
HS Code  28530090
Safety Profile

Moderately toxic by ingestion and inhalation. A corrosive irritant to skin, eyes, and mucous membranes. A very dangerous fire hazard when exposed to heat, flame, or by chemical reaction. May be ignited by spark or impact. Spontaneously flammable in air. Explosive reaction with acetonitrile + diphenyl sulfoxide. Will react with water or steam to produce heat and toxic and corrosive fumes. Can react vigorously with oxidizing materials. To fight fire, use CO2, dry chemical. When heated to decomposition it emits toxic fumes of Cl-. See also CHLOROSILANES.

Hazardous Substances Data 10025-78-2(Hazardous Substances Data)

Hazard Information

Material Safety Data Sheet(MSDS)

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