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tert-dodecylthiol 25103-58-6 MSDS

SECTION 1: Identification of the substance/mixture and of the company/undertaking
  Product identifiers
    Product name        : tert-Dodecylmercaptan    
    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.        : 25103-58-6    
  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
    Skin irritation (Category 2), H315
    Eye irritation (Category 2), H319
    Acute aquatic toxicity (Category 1), H400
    Chronic aquatic toxicity (Category 1), H410
    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
    Xi, N Irritant, Dangerous for the R36/38, R50/53
    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        Warning    
    Hazard statement(s)
    H315        Causes skin irritation.    
    H319        Causes serious eye irritation.    
    H410        Very toxic to aquatic life with long lasting effects.    
    Precautionary statement(s)
    P273        Avoid release to the environment.    
    P305 + P351 + P338        IF IN EYES: Rinse cautiously with water for several minutes. Remove    
    contact lenses, if present and easy to do. Continue rinsing.
    P501        Dispose of contents/ container to an approved waste disposal plant.    
    Supplemental Hazard        none    
  Other hazards

SECTION 3: Composition/information on ingredients
    Synonyms        : tert-Dodecanethiol    
    Formula        : C12H26S    
    Molecular Weight        : 202,40 g/mol    
    CAS-No.        : 25103-58-6    
    EC-No.        : 246-619-1    
  Hazardous ingredients according to Regulation (EC) No 1272/2008
    Component        Classification        Concentration    
    Skin Irrit. 2; Eye Irrit. 2;        -    
    Aquatic Acute 1; Aquatic
    Chronic 1; H315, H319, H410
  Hazardous ingredients according to Directive 1999/45/EC
    Component        Classification        Concentration    
    Xi, N, R36/38 - R50/53        -    
    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
    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
    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
    Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
  Special hazards arising from the substance or mixture
    Carbon oxides, Sulphur oxides
  Advice for firefighters
    Wear self contained breathing apparatus for fire fighting if necessary.
  Further information
    no data available

SECTION 6: Accidental release measures
  Personal precautions, protective equipment and emergency procedures
    Use personal protective equipment. Avoid breathing vapours, mist or gas. Ensure adequate ventilation.
    Evacuate personnel to safe 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. Discharge into the
    environment must be avoided.
  Methods and materials for containment and cleaning up
    Soak up with inert absorbent material and dispose of as hazardous waste. Keep in suitable, closed
    containers for disposal.
  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.
    Normal measures for preventive fire protection.
    For precautions see section 2.2.
  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.
  Specific end use(s)
    A part 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
    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
    Safety glasses with side-shields conforming to EN166 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.
    Full contact
    Material: Nitrile rubber
    Minimum layer thickness: 0,2 mm
    Break through time: > 480 min
    Material tested:Dermatril® P (KCL 743 / Z677388, Size M)
    Splash contact
    Material: Nitrile rubber
    Minimum layer thickness: 0,11 mm
    Break through time: 361 min
    Material tested:Dermatril® (KCL 740 / Z677272, 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
    impervious 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 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).
  Control of environmental exposure
    Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into
    the environment must be avoided.

SECTION 9: Physical and chemical properties
  Information on basic physical and chemical properties
    a) Appearance        Form: clear, liquid    
    Colour: light brown
    b) Odour        Stench.    
    c) Odour Threshold        no data available    
    d) pH        no data available    
    e) Melting point/freezing        Melting point/range: < -30 °C    
    f) Initial boiling point and 227 - 248 °C - lit.
    boiling range
    g) Flash point        97 °C - closed cup    
    h) Evapouration rate        no data available    
    i) Flammability (solid, gas) no data available
    j) Upper/lower        no data available    
    flammability or
    explosive limits
    k) Vapour pressure        0,8 hPa at 50 °C    
    0,03 hPa at 20 °C
    l) Vapour density        6,99 - (Air = 1.0)    
    m) Relative density        0,86 g/cm3 at 20 °C    
    n) Water solubility        insoluble    
    o) Partition coefficient: n- log Pow: 6,1
    p) Auto-ignition        no data available    
    q) Decomposition        350 °C -    
    r) Viscosity        no data available    
    s) Explosive properties        no data available    
    t) Oxidizing properties        no data available    
  Other safety information
    Relative vapour density 6,99 - (Air = 1.0)

SECTION 10: Stability and reactivity
    no data available
  Chemical stability
    Stable under recommended storage conditions.
  Possibility of hazardous reactions
    no data available
  Conditions to avoid
    no data available
  Incompatible materials
    Strong oxidizing agents
  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 - 4.400 - 12.000 mg/kg
    LD50 Dermal - rabbit - 12.600 mg/kg
  Skin corrosion/irritation
    Skin - rabbit
    Result: Skin irritation - 24 h
  Serious eye damage/eye irritation
    Eyes - rabbit
    Result: Moderate eye irritation
  Respiratory or skin sensitisation
    no data available
  Germ cell mutagenicity
    no data available
    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: JR3150000
    Nausea, Headache, Vomiting, To the best of our knowledge, the chemical, physical, and toxicological
    properties have not been thoroughly investigated.

SECTION 12: Ecological information
    Toxicity to fish        LC50 - Salmo salar (Atlantic salmon) - 0,9 mg/l    
    Toxicity to daphnia and EC50 - Daphnia - 0,5 mg/l - 48 h
    other aquatic
    Toxicity to algae        EC50 - Desmodesmus subspicatus (green algae) - 81 - 100 mg/l - 72 h    
  Persistence and degradability
    Biodegradability        Result: 10,40 % - Not readily biodegradable.    
  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
    Very toxic to aquatic life.

SECTION 13: Disposal considerations
  Waste treatment methods
    Offer surplus and non-recyclable solutions to a licensed disposal company. Contact a licensed
    professional waste disposal service to dispose of this material.
  Contaminated packaging
    Dispose of as unused product.

SECTION 14: Transport information
  UN number
    ADR/RID: 3082        IMDG: 3082        IATA: 3334    
  UN proper shipping name
    IATA:        Aviation regulated liquid, n.o.s. (tert-Dodecanethiol)    
  Transport hazard class(es)
    ADR/RID: 9        IMDG: 9        IATA: 9    
  Packaging group
    ADR/RID: III        IMDG: III        IATA: III    
  Environmental hazards
    ADR/RID: yes        IMDG Marine pollutant: yes        IATA: no    
  Special precautions for user
  Further information
    EHS-Mark required (ADR, IMDG code 2.10.3) for single packagings and combination
    packagings containing inner packagings with Dangerous Goods > 5L for liquids or > 5kg for solids.



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