Silane,dichlorobis(1,1-dimethylethyl)-

1. 1.1 IDENTIFICATION OF THE SUBSTANCE/MIXTURE AND OF THE COMPANY/UNDERTAKING Product identifiers Product name Product Number Brand CAS-No. : : : : Di- tert -butyldichlorosilane 287660 18395-90-9 1.2 Relevant identified uses of the substance or mixture and uses advised against Identified uses : Laboratory chemicals, Manufacture of substances 2. 2.1 2.2 HAZARDS IDENTIFICATION Classification of the substance or mixture Classification according to Regulation (EC) No 1272/2008 [EU-GHS/CLP] Skin corrosion (Category 1B) Classification according to EU Directives 67/548/EEC or 1999/45/EC Causes burns. Label elements Labelling according Regulation (EC) No 1272/2008 [CLP] Pictogram Signal word Hazard statement(s) H314 Precautionary statement(s) P280 P305 + P351 + P338 P310 Supplemental Hazard Statements Danger Causes severe skin burns and eye damage. Wear protective gloves/ protective clothing/ eye protection/ face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/ physician. none According to European Directive 67/548/EEC as amended. Hazard symbol(s) R-phrase(s) R34 S-phrase(s) S26 S36/37/39 S45 Causes burns. 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). 2.3 3. 3.1 Other hazards Lachrymator. COMPOSITION/INFORMATION ON INGREDIENTS Substances Synonyms Formula Molecular Weight Component : : : DTBSCl2 C8H18Cl2Si 213,22 g/mol Concentration Dichlorobis(1,1-dimethylethyl)silane CAS-No. EC-No. 18395-90-9 242-273-0 - 4. 4.1 4.2 4.3 5. 5.1 FIRST AID MEASURES Description of first aid measures General advice Consult a physician. Show this safety data sheet to the doctor in attendance. If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Take off contaminated clothing and shoes immediately. Wash off with soap and plenty of water. Consult a physician. In case of eye contact Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. If swallowed Do NOT induce vomiting. Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician. Most important symptoms and effects, both acute and delayed Material is extremely destructive to tissue of the mucous membranes and upper respiratory tract, eyes, and skin., Cough, Shortness of breath, Headache, Nausea Indication of any immediate medical attention and special treatment needed no data available FIRE-FIGHTING MEASURES Extinguishing media Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. 5.2 5.3 5.4 6. 6.1 6.2 6.3 6.4 7. 7.1 7.2 7.3 8. 8.1 8.2 Special hazards arising from the substance or mixture Carbon oxides, Hydrogen chloride gas, silicon oxides Advice for firefighters Wear self contained breathing apparatus for fire fighting if necessary. Further information Use water spray to cool unopened containers. ACCIDENTAL RELEASE MEASURES Personal precautions, protective equipment and emergency procedures Use personal protective equipment. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Remove all sources of ignition. Evacuate personnel to safe areas. Beware of vapours accumulating to form explosive concentrations. Vapours can accumulate in low areas. Environmental precautions Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Methods and materials for containment and cleaning up Contain spillage, and then collect with an electrically protected vacuum cleaner or by wet-brushing and place in container for disposal according to local regulations (see section 13). Keep in suitable, closed containers for disposal. Reference to other sections For disposal see section 13. HANDLING AND STORAGE Precautions for safe handling Avoid inhalation of vapour or mist. Keep away from sources of ignition - No smoking.Take measures to prevent the build up of electrostatic charge. Conditions for safe storage, including any incompatibilities Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Recommended storage temperature: 2 - 8 °C Moisture sensitive. Specific end uses no data available EXPOSURE CONTROLS/PERSONAL PROTECTION Control parameters Components with workplace control parameters Exposure controls Appropriate engineering controls Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. Personal protective equipment Eye/face protection Tightly fitting safety goggles. Faceshield (8-inch minimum). Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin protection Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. The selected protective gloves have to satisfy the specifications of EU Directive 89/686/EEC and the standard EN 374 derived from it. Body Protection Complete suit protecting against chemicals, The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Respiratory protection Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator with multi-purpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). 9. 9.1 PHYSICAL AND CHEMICAL PROPERTIES Information on basic physical and chemical properties a) b) c) d) e) f) g) h) Appearance Odour Odour Threshold pH Melting point/freezing point Initial boiling point and boiling range Flash point Evaporation rate Form: clear, liquid Colour: colourless no data available no data available no data available Melting point/range: -15 °C - lit. 190 °C at 972 hPa - lit. no data available no data available i) Flammability (solid, gas) no data available j) k) l) Upper/lower flammability or explosive limits Vapour pressure Vapour density no data available no data available no data available m) Relative density 1,009 g/cm3 at 25 °C n) o) p) q) r) s) t) Water solubility Partition coefficient: n- octanol/water Autoignition temperature Decomposition temperature Viscosity Explosive properties Oxidizing properties no data available no data available no data available no data available no data available no data available no data available 9.2 Other safety information no data available 10. 10.1 10.2 10.3 10.4 10.5 10.6 11. 11.1 STABILITY AND REACTIVITY Reactivity no data available Chemical stability no data available Possibility of hazardous reactions no data available Conditions to avoid Heat, flames and sparks. Incompatible materials Strong oxidizing agents, Strong bases Hazardous decomposition products Other decomposition products - no data available TOXICOLOGICAL INFORMATION Information on toxicological effects Acute toxicity no data available Skin corrosion/irritation no data available Serious eye damage/eye irritation no data available Respiratory or skin sensitization no data available Germ cell mutagenicity no data available Carcinogenicity IARC: No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC. Reproductive toxicity no data available Specific target organ toxicity - single exposure no data available Specific target organ toxicity - repeated exposure no data available Aspiration hazard no data available Potential health effects Inhalation Ingestion Skin Eyes May be harmful if inhaled. Material is extremely destructive to the tissue of the mucous membranes and upper respiratory tract. May be harmful if swallowed. Causes burns. May be harmful if absorbed through skin. Causes skin burns. Causes eye burns. Signs and Symptoms of Exposure Material is extremely destructive to tissue of the mucous membranes and upper respiratory tract, eyes, and skin., Cough, Shortness of breath, Headache, Nausea Additional Information RTECS: Not available 12. 12.1 12.2 12.3 12.4 12.5 12.6 13. 13.1 14. 14.1 ECOLOGICAL INFORMATION Toxicity no data available Persistence and degradability no data available Bioaccumulative potential no data available Mobility in soil no data available Results of PBT and vPvB assessment no data available Other adverse effects no data available DISPOSAL CONSIDERATIONS Waste treatment methods Product This combustible material may be burned in a chemical incinerator equipped with an afterburner and scrubber. Offer surplus and non-recyclable solutions to a licensed disposal company. Contaminated packaging Dispose of as unused product. TRANSPORT INFORMATION UN number 14.2 ADR/RID: 2987 UN proper shipping name IMDG: 2987 IATA: 2987 ADR/RID: IMDG: IATA: CHLOROSILANES, CORROSIVE, N.O.S. (Dichlorobis(1,1-dimethylethyl)silane) CHLOROSILANES, CORROSIVE, N.O.S. Chlorosilanes, corrosive, n.o.s. 14.3 Transport hazard class(es) 14.4 14.5 14.6 15. ADR/RID: 8 Packaging group ADR/RID: II Environmental hazards ADR/RID: no Special precautions for user no data available REGULATORY INFORMATION IMDG: 8 IMDG: II IMDG Marine pollutant: no IATA: 8 IATA: II IATA: no This safety datasheet complies with the requirements of Regulation (EC) No. 1907/2006. 15.1 15.2 Safety, health and environmental regulations/legislation specific for the substance or mixture no data available Chemical Safety Assessment no data available 16. OTHER INFORMATION Further information The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information this document is based on the resent state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. Lookchem shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale.

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