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    Nitrogen dioxide

    1. Molecular Structure

    Nitrogen dioxide 2D Structure

    2. Chemical Identity

    PropertyValue
    IUPAC NameN/A
    Molecular FormulaNO2
    SMILESN(=O)[O]

    3. Chemical Properties

    PropertyValue
    Molecular Weight46.006 g/mol
    TPSA30.4 Ų
    LogP-0.3
    Formal Charge0

    4. Experimental Properties

    PropertyValue
    Boiling Point21.15 °C
    Melting Point-9.3 °C
    Density1.448 at 20 °C/4 °C (liquid); 3.3 g/L at 21.3 °C (gas)
    SolubilityReacts with water (NIOSH, 2024)
    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 PictogramGHS PictogramGHS PictogramGHS Pictogram

    Hazard Statements

    • H270 (99.6%): May cause or intensify fire; oxidizer [Danger Oxidizing gases]
    • H270: May cause or intensify fire; oxidizer [Danger Oxidizing gases]
    • H280 (84.3%): Contains gas under pressure; may explode if heated [Warning Gases under pressure]
    • H280: Contains gas under pressure; may explode if heated [Warning Gases under pressure]
    • H314 (100%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
    • H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
    • H315: Causes skin irritation [Warning Skin corrosion/irritation]
    • H318 (40.2%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
    • H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]
    • H330 (100%): Fatal if inhaled [Danger Acute toxicity, inhalation]
    • H330: Fatal if inhaled [Danger Acute toxicity, inhalation]
    • H336: May cause drowsiness or dizziness [Warning Specific target organ toxicity, single exposure; Narcotic effects]
    • H361: Suspected of damaging fertility or the unborn child [Warning Reproductive toxicity]
    • H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]
    • H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]

    Precautionary Statements

    • P203, P220, P244, P260, P261, P264, P264+P265, P270, P271, P280, P284, P304+P340, P305+P351+P338, P308+P316, P316, P318, P319, P320, P321, P337+P317, P370+P376, P403, P403+P233, P405, P410+P403, and P501 (click each P-code to see the statement)
    • P203, P220, P244, P260, P264, P264+P265, P270, P271, P280, P284, P302+P352, P304+P340, P305+P351+P338, P308+P316, P316, P318, P319, P320, P321, P332+P317, P337+P317, P362+P364, P370+P376, P403, P403+P233, P405, P410+P403, and P501 (click each P-code to see the statement)
    • P220, P244, P260, P264, P264+P265, P271, P280, P284, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P320, P321, P363, P370+P376, P403, P403+P233, P405, P410+P403, and P501 (click each P-code to see the statement)
    • P220, P244, P260, P264, P271, P280, P284, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P320, P321, P363, P370+P376, P403, P403+P233, P405, and P501 (click each P-code to see the statement)
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