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SECTION 1: Identification of the substance/mixture and of the company/undertaking
  Product identifiers
    Product name        : Sodium selenite pentahydrate    
    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.        : 26970-82-1    
  Relevant identified uses of the substance or mixture and uses advised against
    Identified uses        : Laboratory chemicals, Manufacture of substances    
  
  

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SECTION 2: Hazards identification
  Classification of the substance or mixture
  Classification according to Regulation (EC) No 1272/2008
    Acute toxicity, Oral (Category 2), H300
    Acute toxicity, Inhalation (Category 3), H331
    Skin sensitisation (Category 1), H317
    Chronic aquatic toxicity (Category 2), H411
    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
    T+ Very toxic        R28    
    T Toxic        R23    
    R31
    R43
    N Dangerous for the        R51/53    
    environment
    For the full text of the R-phrases mentioned in this Section, see Section 16.
  Label elements
  Labelling according Regulation (EC) No 1272/2008
    Pictogram
    Signal word        Danger    
    Hazard statement(s)
    H300        Fatal if swallowed.    
    H317        May cause an allergic skin reaction.    
    H331        Toxic if inhaled.    
    H411        Toxic to aquatic life with long lasting effects.    
    Precautionary statement(s)
    P261        Avoid breathing dust.    
    P264        Wash hands thoroughly after handling.    
    P273        Avoid release to the environment.    
    P280        Wear protective gloves.    
    P301 + P310        IF SWALLOWED: Immediately call a POISON CENTER or doctor/    
    physician.
    P311        Call a POISON CENTER or doctor/ physician.    
    Supplemental Hazard information (EU)
    EUH031        Contact with acids liberates toxic gas.    
  Other hazards - none

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SECTION 3: Composition/information on ingredients
  Substances
    Formula        : Na2O3Se · 5H2O    
    Molecular Weight        : 263,01 g/mol    
    CAS-No.        : 26970-82-1    
    EC-No.        : 233-267-9    
  Hazardous ingredients according to Regulation (EC) No 1272/2008
    Component        Classification        Concentration    
  Sodium selenite pentahydrate
    CAS-No.        26970-82-1        Acute Tox. 2; Acute Tox. 3;        <= 100 %    
    EC-No.        233-267-9        Skin Sens. 1; Aquatic Chronic    
    Index-No.        034-003-00-3        2; H300, H317, H331, H411,    
    EUH031
    For the full text of the H-Statements and R-Phrases mentioned in this Section, see Section 16

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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. Take victim immediately to hospital. Consult a physician.
  In case of eye contact
    Flush eyes with water as a precaution.
  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

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SECTION 5: Firefighting measures
  Extinguishing media
  Suitable extinguishing media
    Dry powder
  Special hazards arising from the substance or mixture
    Sodium oxides, Selenium/selenium oxides
  Advice for firefighters
    Wear self contained breathing apparatus for fire fighting if necessary.
  Further information
    no data available

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SECTION 6: Accidental release measures
  Personal precautions, protective equipment and emergency procedures
    Wear respiratory protection. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure
    adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust.
    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
    Pick up and arrange disposal without creating dust. Sweep up and shovel. Do not flush with water. Keep
    in suitable, closed containers for disposal.
  Reference to other sections
    For disposal see section 13.

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SECTION 7: Handling and storage
  Precautions for safe handling
    Avoid contact with skin and eyes. Avoid formation of dust and aerosols.
    Provide appropriate exhaust ventilation at places where dust is formed.
    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.
    Never allow product to get in contact with water during storage. Do not store near acids.
    hygroscopic
  Specific end use(s)
    A part from the uses mentioned in section 1.2 no other specific uses are stipulated

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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
    Face shield and safety glasses 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: 0,11 mm
    Break through time: 480 min
    Material tested:Dermatril® (KCL 740 / Z677272, Size M)
    Splash contact
    Material: Nitrile rubber
    Minimum layer thickness: 0,11 mm
    Break through time: 480 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
    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 particle
    respirator type N100 (US) or type P3 (EN 143) 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.

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SECTION 9: Physical and chemical properties
  Information on basic physical and chemical properties
    a) Appearance        Form: crystalline    
    Colour: white
    b) Odour        no data available    
    c) Odour Threshold        no data available    
    d) pH        9 at 50 g/l at 20 °C    
    e) Melting point/freezing        no data available    
    point
    f) Initial boiling point and no data available
    boiling range
    g) Flash point        not applicable    
    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        no data available    
    l) Vapour density        no data available    
    m) Relative density        no data available    
    n) Water solubility        soluble    
    o) Partition coefficient: n- no data available
    octanol/water
    p) Auto-ignition        no data available    
    temperature
    q) Decomposition        > 300 °C -    
    temperature
    r) Viscosity        no data available    
    s) Explosive properties        no data available    
    t) Oxidizing properties        no data available    
  Other safety information
    no data available

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SECTION 10: Stability and reactivity
  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, Strong acids
  Hazardous decomposition products
    Other decomposition products - no data available
    In the event of fire: see section 5

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SECTION 11: Toxicological information
  Information on toxicological effects
  Acute toxicity
    LD50 Oral - rat - 7 mg/kg
  Skin corrosion/irritation
    no data available
  Serious eye damage/eye irritation
    no data available
  Respiratory or skin sensitisation
  Germ cell mutagenicity
    mouse
    mammary gland
    DNA damage
    mouse
    mammary gland
    DNA inhibition
  Carcinogenicity
    This product is or contains a component that is not classifiable as to its carcinogenicity based on its IARC,
    ACGIH, NTP, or EPA classification.
    IARC:        A4 - Not classifiable as a human carcinogen (Sodium selenite pentahydrate)    
    3 - Group 3: Not classifiable as to its carcinogenicity to humans (Sodium selenite
    pentahydrate)
  Reproductive toxicity
    Reproductive toxicity - mouse - Subcutaneous
    Effects on Fertility: Abortion.
    Reproductive toxicity - mouse - Subcutaneous
    Effects on Newborn: Live birth index (# fetuses per litter; measured after birth).
    Developmental Toxicity - mouse - Oral
    Effects on Embryo or Fetus: Fetotoxicity (except death, e.g., stunted fetus). Specific Developmental
    Abnormalities: Musculoskeletal system.
  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: VS7420000
    Nausea, Dizziness, Headache, anemia, Salivation, Tremors, Alopecia., Vomiting, Dermatitis, To the best of
    our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.

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SECTION 12: Ecological information
  Toxicity
    Toxicity to fish        LC50 - Cyprinodon variegatus (sheepshead minnow) - 4,5 - 12,0 mg/l - 96,0 h    
    Toxicity to daphnia and EC50 - Daphnia magna (Water flea) - 7,9 mg/l - 48 h
    other aquatic
    invertebrates
    Toxicity to algae        EC50 - Pseudokirchneriella subcapitata (green algae) - 3,2 - 10,0 mg/l - 72 h    
  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
    Toxic to aquatic life with long lasting effects.

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SECTION 13: Disposal considerations
  Waste treatment methods
  Product
    Offer surplus and non-recyclable solutions to a licensed disposal company. Dissolve or mix the material
    with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber.
  Contaminated packaging
    Dispose of as unused product.

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SECTION 14: Transport information
  UN number
    ADR/RID: 2630        IMDG: 2630        IATA: 2630    
  UN proper shipping name
    ADR/RID: SELENITES
    IMDG: SELENITES
    IATA:        Selenites    
  Transport hazard class(es)
    ADR/RID: 6.1        IMDG: 6.1        IATA: 6.1    
  Packaging group
    ADR/RID: I        IMDG: I        IATA: I    
  Environmental hazards
    ADR/RID: yes        IMDG Marine pollutant: yes        IATA: no    
  Special precautions for user
    no data available

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SECTION 15 - REGULATORY INFORMATION
N/A

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SECTION 16 - ADDITIONAL INFORMATION
N/A