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LC1345 Chlorotrimethylsilane

for gas chromatography


Order number Packaging Quantity Price €
AC28345 Glass bottle 100 ml 19.8
AC28345 Glass bottle 250 ml 39.6


Product information
Synonyms Trimethylchlorosilane, Trimethylsilyl chloride, TMCS
Hill Formula C3H9ClSi
Chemical formula (CH3)3SiCl
HS Code 2931 00 99
EC number 200-900-5
Molar mass 108.64 g/mol
CAS number 75-77-4


Chemical and physical data
Ignition temperature 420 °C DIN 51794
Solubility (20 °C) Risk of violent reaction.,(decomposition)
Melting point -58 °C
Molar mass 108.64 g/mol
Density 0.86 g/cm3 (20 °C)
Boiling point 57 °C (1013 hPa)
Vapor pressure 250 hPa (20 °C)
Explosion limit 1.5 – 46 %(V)
Flash point -20 °C DIN 51755 Part 1


Safety information
R Phrase R 11-14-35-37
Highly flammable.Reacts violently with water.Causes severe burns.Irritating to respiratory system.
S Phrase S 7/9-16-26-36/37/39-45
Keep container tightly closed and in a well-ventilated place.Keep away from sources of ignition – No smoking.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger highly flammable, corrosive
Hazard Symbol



Storage class 3 Flammable Liquids
WGK WGK 1 slightly water endangering
Disposal 24
Liquid inorganic halides and hydrolysis-sensitive reagents can be carefully stirred dropwise into ice-cool 10% sodium hydroxide solution (Cat. No. 105587) (caution: caustic gases!); container D or E.


Transport information
Declaration (transport by sea) IMDG-Code UN 1298 TRIMETHYLCHLOROSILANE, 3 (8), II, Segregation Group: 1 (Acids)
Declaration (transport by air) IATA-DGR UN 1298 TRIMETHYLCHLOROSILANE, 3 (8), II


Toxicological data
LD 50 oral LD50 rat 4868 mg/kg
LD 50 dermal LD50 rabbit 1530 mg/kg


Assay (GC, area%) ≥ 99 %
Identity (IR) passes test


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