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    Oxalic acid

    1. Molecular Structure

    Oxalic acid 2D Structure

    2. Chemical Identity

    PropertyValue
    IUPAC Nameoxalic acid
    Molecular FormulaC2H2O4
    SMILESC(=O)(C(=O)O)O

    3. Chemical Properties

    PropertyValue
    Molecular Weight90.03 g/mol
    TPSA74.6 Ų
    LogP-0.3
    Formal Charge0

    4. Experimental Properties

    PropertyValue
    Boiling PointSublimes (NIOSH, 2024)
    Melting Point189.5 °C (DECOMPOSES)
    Density1.90 @ 17 DEG/4 °C, ALPHA
    Solubility100 G AQ SOLN SATURATED @ 15 °C CONTAINS 6.71 G; 100 G AQ SOLN SATURATED @ 20 °C CONTAINS 8.34 G; 100 G AQ SOLN SATURATED @ 25 °C CONTAINS 9.81 G
    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 (99.8%): Harmful if swallowed [Warning Acute toxicity, oral]
    • H302: Harmful if swallowed [Warning Acute toxicity, oral]
    • H312 (99.7%): Harmful in contact with skin [Warning Acute toxicity, dermal]
    • H312: Harmful in contact with skin [Warning Acute toxicity, dermal]
    • H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
    • H315: Causes skin irritation [Warning Skin corrosion/irritation]
    • H318 (31.1%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
    • H318: Causes serious eye damage [Danger Serious eye damage/eye 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]
    • H402: Harmful to aquatic life [Hazardous to the aquatic environment, acute hazard]
    • H412: Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

    Precautionary Statements

    • P203, P260, P261, P264, P264+P265, P270, P271, P273, P280, P301+P317, P302+P352, P304+P340, P305+P354+P338, P308+P316, P317, P318, P319, P321, P330, P332+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)
    • P203, P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P308+P316, P316, P317, P318, P319, P321, P330, P363, P405, and P501 (click each P-code to see the statement)
    • P260, P264, P270, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P319, P321, P330, P362+P364, P363, P405, and P501 (click each P-code to see the statement)
    • P264, P264+P265, P270, P280, P301+P317, P302+P352, P305+P354+P338, P317, P321, P330, P362+P364, and P501 (click each P-code to see the statement)
    • P264, P270, P280, P301+P317, P302+P352, P317, P321, P330, P362+P364, and P501 (click each P-code to see the statement)
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