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    Ammonium bisulfite

    1. Molecular Structure

    Ammonium bisulfite 2D Structure

    2. Chemical Identity

    PropertyValue
    IUPAC Nameazanium hydrogen sulfite
    Molecular FormulaH5NO3S
    SMILES[NH4+].OS(=O)[O-]

    3. Chemical Properties

    PropertyValue
    Molecular Weight99.11 g/mol
    TPSA80.6 Ų
    LogPN/A
    Formal Charge0

    4. Experimental Properties

    PropertyValue
    Boiling Pointat 101.1kPa: 100 °C
    Melting Point-10 °C
    Density2.03 at 68 °F 1.40 (72% aqueous solution) (USCG, 1999) – Denser than water; will sink
    SolubilityIn water: 267 g/100 ml @ 10 °C, 620 G/100 ml @ 60 °C
    Flash PointNo data available
    Autoignition TempNo data available

    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: Harmful if swallowed [Warning Acute toxicity, oral]
    • H315 (38.3%): Causes skin irritation [Warning Skin corrosion/irritation]
    • H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]
    • H319 (94.4%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
    • H335 (37.7%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

    Precautionary Statements

    • P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, 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)
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