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    Potassium nitrate

    1. Molecular Structure

    Potassium nitrate 2D Structure

    2. Chemical Identity

    PropertyValue
    IUPAC Namepotassium nitrate
    Molecular FormulaKNO3
    SMILES[N+](=O)([O-])[O-].[K+]

    3. Chemical Properties

    PropertyValue
    Molecular Weight101.103 g/mol
    TPSA62.9 Ų
    LogPN/A
    Formal Charge0

    4. Experimental Properties

    PropertyValue
    Boiling Point400 °C (decomp)
    Melting Point337 °C
    Density2.1 at 25 °C
    Solubility1 g/2.8 mL water at about 25 °C; 1 g/0.5 mL boiling water; 1 g/620 mL alcohol
    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 PictogramGHS Pictogram

    Hazard Statements

    • H272 (93.9%): May intensify fire; oxidizer [Danger Oxidizing liquids; Oxidizing solids]
    • H272: May intensify fire; oxidizer [Danger Oxidizing liquids; Oxidizing solids]
    • H303: May be harmful if swallowed [Warning Acute toxicity, oral]
    • H315 (59.4%): Causes skin irritation [Warning Skin corrosion/irritation]
    • H315: Causes skin irritation [Warning Skin corrosion/irritation]
    • H319 (59.5%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
    • H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]
    • H335 (59.3%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
    • H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
    • H361: Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]
    • H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]
    • H371: May cause damage to organs [Warning Specific target organ toxicity, single exposure]
    • H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
    • H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]

    Precautionary Statements

    • P203, P210, P220, P260, P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P308+P316, P318, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P405, and P501 (click each P-code to see the statement)
    • P203, P210, P220, P260, P264, P270, P280, P308+P316, P318, P319, P321, P370+P378, P405, and P501 (click each P-code to see the statement)
    • P210, P220, P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P370+P378, P403+P233, P405, and P501 (click each P-code to see the statement)
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