TRIMETHYLCHLOROSILANE

ICSC: 0966

TRIMETHYLCHLOROSILANE
Chlorotrimethylsilane
Trimethyl silyl chloride
Chlorotrimethylsilicane
C₃H₉ClSi/(CH₃)₃SiCl
Molecular mass: 108.7
CAS # 75-77-4
RTECS # VV2710000
ICSC # 0966
UN # 1298

TYPES OF HAZARD/ EXPOSURE	ACUTE HAZARDS/ SYMPTOMS	PREVENTION	FIRST AID/ FIRE FIGHTING
FIRE	Highly flammable. Gives off irritating or toxic fumes (or gases) in a fire.	NO open flames, NO sparks, and NO smoking.	AFFF, carbon dioxide, dry sand, special powder. NO hydrous agents. NO water.
EXPLOSION	Vapour/air mixtures are explosive.	Closed system, ventilation, explosion-proof electrical equipment and lighting.	In case of fire: keep drums, etc., cool by spraying with water but NO direct contact with water.

EXPOSURE		PREVENT GENERATION OF MISTS! AVOID ALL CONTACT!
INHALATION	Burning sensation. Cough. Laboured breathing.	Ventilation. Local exhaust or breathing protection.	Fresh air, rest. Half-upright position. Refer for medical attention.
SKIN	Redness. Pain. Blisters.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
EYES	Redness. Pain. Severe deep burns.	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 take to a doctor.
INGESTION	Abdominal pain. Burning sensation. Weakness.	Do not eat, drink, or smoke during work.	Rinse mouth. Do NOT induce vomiting. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert! Collect leaking liquid in sealable containers. Absorb remaining liquid in dry sand or inert absorbent and remove to safe place (extra personal protection: complete protective clothing including self-contained breathing apparatus).

Fireproof. Separated from other compounds, food and feedstuffs. Cool. Dry. Well closed.

Do not transport with food and feedstuffs.
UN Hazard Class: 3
UN Subsidiary Risks: 8
UN Packing Group: I

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0966

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

TRIMETHYLCHLOROSILANE

ICSC: 0966

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PHYSICAL STATE; APPEARANCE:
COLOURLESS LIQUID , WITH PUNGENT ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air and may travel along the ground; distant ignition possible.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic and corrosive fumes (hydrogen chloride, phosgene). Reacts violently with water, ketones, alcohol, amines and many other substances, causing explosion hazard. On contact with air it emits corrosive fumes of hydrogen chloride.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV not established.

ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour.

INHALATION RISK:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The vapour is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion. Inhalation of the vapour may cause lung oedema (see Notes). Swallowing the liquid may cause aspiration into the lungs with the risk of chemical pneumonitis. Medical observation is indicated.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis.

PHYSICAL
PROPERTIES

Boiling point: 57°C
Melting point: -58°C
Relative density (water = 1): 0.85
Solubility in water: reaction
Vapour pressure, kPa at 20°C: 26.7

Relative vapour density (air = 1): 3.75
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.7
Flash point: -27°C
Auto-ignition temperature: see Notes°C
Explosive limits, vol% in air: 1.8-6

ENVIRONMENTAL
DATA

NOTES

Different auto-ignition temperatures are given in literature: 395°C and 417°C. Reacts violently with fire extinguishing agents such as water. 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 spray, by a doctor or a person authorized by him/her, should be considered. Do NOT take working clothes home.

Transport Emergency Card: TEC (R)-30G40
NFPA Code: H 3; F 3; R 2; no water

ADDITIONAL INFORMATION

ICSC: 0966	TRIMETHYLCHLOROSILANE
© IPCS, CEC, 1993

IMPORTANT LEGAL NOTICE:

Neither the CEC or the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.