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    Sodium bisulfite

    1. Molecular Structure

    Sodium bisulfite 2D Structure

    2. Chemical Identity

    PropertyValue
    IUPAC Namesodium hydrogen sulfite
    Molecular FormulaHNaO3S
    SMILESOS(=O)[O-].[Na+]

    3. Chemical Properties

    PropertyValue
    Molecular Weight104.06 g/mol
    TPSA79.6 Ų
    LogPN/A
    Formal Charge0

    4. Experimental Properties

    PropertyValue
    Boiling Point104 °C
    Melting PointDecomposes (NIOSH, 2024)
    Density1.48 @25 °C
    Solubility29 % (NIOSH, 2024)
    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 PictogramGHS Pictogram

    Hazard Statements

    • H302 (99.9%): Harmful if swallowed [Warning Acute toxicity, oral]
    • H302: Harmful if swallowed [Warning Acute toxicity, oral]
    • H317: May cause an allergic skin reaction [Warning Sensitization, Skin]
    • H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]
    • H320: Causes eye irritation [Warning Serious eye damage/eye irritation]
    • H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled [Danger Sensitization, respiratory]
    • H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
    • H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]

    Precautionary Statements

    • P233, P260, P261, P264, P270, P271, P272, P280, P284, P301+P317, P302+P352, P304+P340, P319, P321, P330, P333+P317, P342+P316, P362+P364, P403, P403+P233, P405, and P501 (click each P-code to see the statement)
    • P261, P264+P265, P271, P304+P340, P305+P351+P338, P319, P337+P317, P403+P233, 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)
    • P264, P270, P301+P317, P330, and P501 (click each P-code to see the statement)
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