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CAS No.: 75-77-4
Formula: C3H9ClSi
Exact Mass: 108.01600
Molecular Weight: 108.64200
PSA: 0.00000
LogP: 2.06010
Reference Price: $3,387/ton Inquiry Now
chlorotrimethylsilane 75-77-4 MSDS

SECTION 1: Identification of the substance/mixture and of the company/undertaking
  Product identifiers
    Product name        : Chlorotrimethylsilane    
    REACH No.        : A registration number is not available for this substance as the substance    
    or its uses are exempted from registration, the annual tonnage does not
    require a registration or the registration is envisaged for a later
    registration deadline.
    CAS-No.        : 75-77-4    
  Relevant identified uses of the substance or mixture and uses advised against
    Identified uses        : Laboratory chemicals, Manufacture of substances    

SECTION 2: Hazards identification
  Classification of the substance or mixture
  Classification according to Regulation (EC) No 1272/2008
    Flammable liquids (Category 2), H225
    Acute toxicity, Oral (Category 3), H301
    Acute toxicity, Inhalation (Category 3), H331
    Acute toxicity, Dermal (Category 4), H312
    Skin corrosion (Category 1A), H314
    For the full text of the H-Statements mentioned in this Section, see Section 16.
  Classification according to EU Directives 67/548/EEC or 1999/45/EC
    F, C Highly flammable, Corrosive R11, R14, R20/21/22, R35, R37
    For the full text of the R-phrases mentioned in this Section, see Section 16.
  Label elements
  Labelling according Regulation (EC) No 1272/2008
    Signal word        Danger    
    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.    
    Precautionary statement(s)
    P210        Keep away from heat/sparks/open flames/hot surfaces. - No smoking.    
    P261        Avoid breathing vapours.    
    P280        Wear protective gloves/ protective clothing/ eye protection/ face    
    P301 + P310        IF SWALLOWED: Immediately call a POISON CENTER or doctor/    
    P305 + P351 + P338        IF IN EYES: Rinse cautiously with water for several minutes. Remove    
    contact lenses, if present and easy to do. Continue rinsing.
    P310        Immediately call a POISON CENTER or doctor/ physician.    
    Supplemental Hazard information (EU)
    EUH014        Reacts violently with water.    
    EUH071        Corrosive to the respiratory tract.    
  Other hazards - none

SECTION 3: Composition/information on ingredients
    Synonyms        : TMCS    
    Trimethylsilyl chloride
    Formula        : C3H9ClSi    
    Molecular Weight        : 108,64 g/mol    
    CAS-No.        : 75-77-4    
    EC-No.        : 200-900-5    
  Hazardous ingredients according to Regulation (EC) No 1272/2008
    Component        Classification        Concentration    
    CAS-No.        75-77-4        Flam. Liq. 2; Acute Tox. 3;        <= 100 %    
    EC-No.        200-900-5        Acute Tox. 4; Skin Corr. 1A;    
    H225, H301 + H331, H312,
    H314, EUH014, EUH071
  Hazardous ingredients according to Directive 1999/45/EC
    Component        Classification        Concentration    
    CAS-No.        75-77-4        F, C, R11 - R14 - R20/21/22 -        <= 100 %    
    EC-No.        200-900-5        R35 - R37    
    For the full text of the H-Statements and R-Phrases mentioned in this Section, see Section 16

SECTION 4: 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. Take
    victim immediately to hospital. 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
    The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in
    section 11
  Indication of any immediate medical attention and special treatment needed
    no data available

SECTION 5: Firefighting measures
  Extinguishing media
  Suitable extinguishing media
    Dry powder
  Special hazards arising from the substance or mixture
    no data available
  Advice for firefighters
    Wear self contained breathing apparatus for fire fighting if necessary.
  Further information
    Water hydrolyzes material liberating acidic gas which in contact with metal surfaces can generate
    flammable and/or explosive hydrogen gas.

SECTION 6: Accidental release measures
  Personal precautions, protective equipment and emergency procedures
    Wear respiratory protection. Avoid breathing vapours, 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.
    For personal protection see section 8.
  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). Do not flush with water.
  Reference to other sections
    For disposal see section 13.

SECTION 7: Handling and storage
  Precautions for safe handling
    Avoid contact with skin and eyes. Avoid inhalation of vapour or mist.
    Flash back possible over considerable distance.Container explosion may occur under fire conditions.Keep
    away from sources of ignition - No smoking.Take measures to prevent the build up of electrostatic charge.
    For precautions see section 2.2.
  Conditions for safe storage, including any incompatibilities
    Store under inert gas. 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.
    Never allow product to get in contact with water during storage.
    Store under inert gas.
  Specific end use(s)
    Apart from the uses mentioned in section 1.2 no other specific uses are stipulated

SECTION 8: Exposure controls/personal protection
  Control parameters
  Components with workplace control parameters
  Exposure controls
  Appropriate engineering controls
    Avoid contact with skin, eyes and clothing. Wash hands before breaks and immediately after handling
    the product.
  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
  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.
    Full contact
    Material: Nitrile rubber
    Minimum layer thickness: 0,4 mm
    Break through time: 480 min
    Material tested:Camatril® (KCL 730 / Z677442, Size M)
    Splash contact
    Material: Nitrile rubber
    Minimum layer thickness: 0,4 mm
    Break through time: 480 min
    Material tested:Camatril® (KCL 730 / Z677442, Size M)
    data source: KCL GmbH, D-36124 Eichenzell, phone +49 (0)6659 87300,     test method: EN374
    If used in solution, or mixed with other substances, and under conditions which differ from EN 374,
    contact the supplier of the CE approved gloves. This recommendation is advisory only and must
    be evaluated by an industrial hygienist and safety officer familiar with the specific situation of
    anticipated use by our customers. It should not be construed as offering an approval for any
    specific use scenario.
  Body Protection
    Complete suit protecting against chemicals, Flame retardant antistatic protective clothing, 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 AXBEK (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).
  Control of environmental exposure
    Prevent further leakage or spillage if safe to do so. Do not let product enter drains.

SECTION 9: Physical and chemical properties
  Information on basic physical and chemical properties
    a) Appearance        Form: liquid, clear    
    Colour: colourless
    b) Odour        pungent    
    c) Odour Threshold        no data available    
    d) pH        no data available    
    e) Melting point/freezing        Melting point/range: -40 °C - lit.    
    f) Initial boiling point and 57 °C - lit.
    boiling range
    g) Flash point        -28,0 °C - closed cup    
    h) Evapouration rate        no data available    
    i) Flammability (solid, gas) no data available
    j) Upper/lower        Upper explosion limit: 46 %(V)    
    flammability or        Lower explosion limit: 1,5 %(V)    
    explosive limits
    k) Vapour pressure        250 hPa at 20 °C    
    800 hPa at 50 °C
    l) Vapour density        no data available    
    m) Relative density        0,856 g/cm3 at 25 °C    
    n) Water solubility        hydrolyses    
    o) Partition coefficient: n- not applicable
    p) Auto-ignition        400,0 °C    
    q) Decomposition        no data available    
    r) Viscosity        0,4 mm2/s at 25 °C -    
    s) Explosive properties        no data available    
    t) Oxidizing properties        no data available    
  Other safety information
    no data available

SECTION 10: Stability and reactivity
    no data available
  Chemical stability
    Stable under recommended storage conditions.
  Possibility of hazardous reactions
    Reacts violently with water.
  Conditions to avoid
    Heat, flames and sparks. Extremes of temperature and direct sunlight. Exposure to moisture.
  Incompatible materials
    Strong acids, Strong bases, Strong oxidizing agents, Ketones, Aldehydes, Water
  Hazardous decomposition products
    Other decomposition products - no data available
    In the event of fire: see section 5

SECTION 11: Toxicological information
  Information on toxicological effects
  Acute toxicity
    LD50 Oral - rat - < 214 mg/kg
    (OECD Test Guideline 401)
    LC50 Inhalation - rat - 1 h - 19 mg/l
    LD50 Dermal - rabbit - 1.527 mg/kg
    Remarks: Behavioral:Altered sleep time (including change in righting reflex). Diarrhoea Nutritional and
    Gross Metabolic:Weight loss or decreased weight gain.
  Skin corrosion/irritation
    Skin - rabbit
    Result: Severe skin irritation
  Serious eye damage/eye irritation
    Eyes - rabbit
    Result: Irreversible effects on the eye
    (Draize Test)
  Respiratory or skin sensitisation
    no data available
  Germ cell mutagenicity
    no data available
    This material has not been classified by IARC, OSHA, ACGIH, EPA, or NTP as to its carcinogenicity,
    however, some studies have shown that this material may induce certain types of cancers.
    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
  Additional Information
    RTECS: VV2710000
    Material is extremely destructive to tissue of the mucous membranes and upper respiratory tract, eyes, and
    skin., spasm, inflammation and edema of the larynx, spasm, inflammation and edema of the bronchi,
    pneumonitis, pulmonary edema, burning sensation, Cough, wheezing, laryngitis, Shortness of breath,
    Headache, Nausea, Vomiting, To the best of our knowledge, the chemical, physical, and toxicological
    properties have not been thoroughly investigated.
    Nerves. - Irregularities - Based on Human Evidence

SECTION 12: Ecological information
    Toxicity to fish        semi-static test LC50 - Oncorhynchus mykiss (rainbow trout) - 271 mg/l - 96 h    
    (OECD Test Guideline 203)
    Remarks: no data available
    Toxicity to daphnia and semi-static test EC50 - Daphnia magna (Water flea) - 124 mg/l - 48 h
    other aquatic        (OECD Test Guideline 202)    
    Toxicity to algae        static test EC50 - Pseudokirchneriella subcapitata (green algae) - > 750 mg/l -    
    72 h
    (OECD Test Guideline 201)
  Persistence and degradability
    no data available
  Bioaccumulative potential
    no data available
  Mobility in soil
    no data available
  Results of PBT and vPvB assessment
    PBT/vPvB assessment not available as chemical safety assessment not required/not conducted
  Other adverse effects
    no data available

SECTION 13: Disposal considerations
  Waste treatment methods
    Burn in a chemical incinerator equipped with an afterburner and scrubber but exert extra care in igniting
    as this material is highly flammable. Offer surplus and non-recyclable solutions to a licensed disposal
  Contaminated packaging
    Dispose of as unused product.

SECTION 14: Transport information
  UN number
    ADR/RID: 1298        IMDG: 1298        IATA: 1298    
  UN proper shipping name
    IATA:        Trimethylchlorosilane    
    Passenger Aircraft: Not permitted for transport
  Transport hazard class(es)
    ADR/RID: 3 (8)        IMDG: 3 (8)        IATA: 3 (8)    
  Packaging group
    ADR/RID: II        IMDG: II        IATA: II    
  Environmental hazards
    ADR/RID: no        IMDG Marine pollutant: no        IATA: no    
  Special precautions for user
    no data available



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