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    Sodium sulfite

    1. Molecular Structure

    Sodium sulfite 2D Structure

    2. Chemical Identity

    PropertyValue
    IUPAC Namedisodium;sulfite
    Molecular FormulaNa2O3S
    SMILES[O-]S(=O)[O-].[Na+].[Na+]

    3. Chemical Properties

    PropertyValue
    Molecular Weight126.05 g/mol
    TPSA82.4 Ų
    LogPN/A
    Formal Charge0

    4. Experimental Properties

    PropertyValue
    Boiling PointDecomposes (NTP, 1992)
    Melting Point911 °C
    Density2.633 @25 °C
    SolubilityColorless, monoclinic crystals; demsity: 1.56 g/cu cm; solubility: 30.7 g/100 g water at 25 °C; slightly solluble in ethanol; unstable /Sodium sulfite heptahydrate/
    Flash PointNo data available
    Autoignition TempNot flammable (USCG, 1999)

    5. Supplier Suggestions

    SupplierWebsiteLocation
    Sigma Aldrich/MerckVisit MerckInternational
    LennoxVisit LennoxIreland
    Doc SolderVisit Doc SolderIreland

    6. GHS Safety & Hazards

    Signal Word
    Danger
    GHS PictogramGHS Pictogram

    Hazard Statements

    • H302 (18.3%): Harmful if swallowed [Warning Acute toxicity, oral]
    • H302: Harmful if swallowed [Warning Acute toxicity, oral]
    • H314 (51.8%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
    • H315 (19.3%): Causes skin irritation [Warning Skin corrosion/irritation]
    • H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]
    • H319 (21%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]

    Precautionary Statements

    • P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P351+P338, P305+P354+P338, P316, P321, P330, P332+P317, P337+P317, P362+P364, P363, P405, and P501 (click each P-code to see the statement)
    • P264, P264+P265, P270, P280, P301+P317, P305+P354+P338, P317, P330, and P501 (click each P-code to see the statement)
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