Description Catalogue Number 818737 Synonyms Trimethylchlorosilane, Trimethylsilyl chloride, TMCS Description Chlorotrimethylsilane Product Information CAS number 75-77-4 EC number 200-900-5 Hill Formula C₃H₉ClSi Chemical formula (CH₃)₃SiCl Molar Mass 108.64 g/mol HS Code 2931 90 00 Structure formula Image Applications Application Chlorotrimethylsilane for synthesis. CAS 75-77-4, chemical formula (CH₃)₃SiCl. Physicochemical Information Boiling point 57 °C (1013 hPa) Density 0.86 g/cm3 (20 °C) Explosion limit 1.5 - 46 %(V) Flash point -20 °C Ignition temperature 420 °C Melting Point -58 °C Vapor pressure 250 hPa (20 °C) Toxicological Information LD 50 oral LD50 Rat 4868 mg/kg LD 50 dermal LD50 Rabbit 1530 mg/kg Safety Information according to GHS Hazard Pictogram(s) Hazard Statement(s) H225: Highly flammable liquid and vapour. H301 + H331: Toxic if swallowed or if inhaled. H312: Harmful in contact with skin. H314: Causes severe skin burns and eye damage. H335: May cause respiratory irritation. EUH014: Reacts violently with water. Precautionary Statement(s) P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P240: Ground/bond container and receiving equipment. P280: Wear protective gloves/ protective clothing/ eye protection/ face protection. P301 + P330 + P331: IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P302 + P352: IF ON SKIN: Wash with plenty of soap and water. P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P308 + P310: IF exposed or concerned: immediately call a POISON CENTER or doctor/ physician. P403 + P233: Store in a well-ventilated place. Keep container tightly closed. Signal Word Danger 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. Safety Information Hazard Symbols Corrosive Flammable Categories of danger highly flammable, corrosive R Phrase R 11-14-20/21/22-35-37 Highly flammable.Reacts violently with water.Harmful by inhalation, in contact with skin and if swallowed.Causes severe burns.Irritating to respiratory system. S Phrase S 7/9-16-23-26-36/37/39-45 Keep container tightly closed and in a well-ventilated place.Keep away from sources of ignition - No smoking.Do not breathe vapour.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). Storage and Shipping Information Storage Store below +30°C. Transport Information Declaration (railroad and road) ADR, RID UN 1298 , 3 (8), II Declaration (transport by air) IATA-DGR UN 1298 , 3 (8), II Declaration (transport by sea) IMDG-Code UN 1298 , 3 (8), II, Segregation Group: 1 (Acids) Specifications Assay (GC, area%) ≥ 99.0 % (a/a) Density (d 20 °C/ 4 °C) 0.858 - 0.861 Identity (IR) passes test
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