草酸

草酸（C2H2O4）的分子结构、物理性质与来源记录。摩尔质量 90.03 g/mol。查看化学标识、相关反应和材料用途。

化学式
C2H2O4
官能团
Carboxylic acids; Dicarboxylic acids
摩尔质量
90.03 g/mol
Also known as
ethanedioic acid, Aktisal, Aquisal, Oxiric acid, Kyselina stavelova, Oxaalzuur

Identifiers

化学式
C2H2O4
官能团
Carboxylic acids; Dicarboxylic acids
摩尔质量
90.03 g/mol
Also known as
ethanedioic acid, Aktisal, Aquisal, Oxiric acid, Kyselina stavelova, Oxaalzuur
化学标识符
SMILES
C(=O)(C(=O)O)O
InChI
InChI=1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)
PubChem CID
971

性质

熔化／分解
189.5 °C (DECOMPOSES)
升华
Sublimes (NIOSH, 2024)
密度
1.9 g/cm³
水中溶解度
Water solubility of 220,000 mg/l at 25 °C

Related compounds

参考文献

  1. PubChem Compound Summary: Oxalic acid (CID 971)National Center for Biotechnology Information · PubChem

    Identity, molecular formula, molecular weight and aliases retrieved via PUG REST on 2026-09-08.

  2. Hazardous Substances Data Bank (HSDB): Oxalic acid — melting pointHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/971#section=Melting-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Budavari, S. (ed.). The Merck Index - Encyclopedia of Chemicals, Drugs and Biologicals. Rahway, NJ: Merck and Co., Inc., 1989., p. 1093

  3. CAMEO Chemicals: Oxalic acid — boiling pointCAMEO Chemicals

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/971#section=Boiling-Point. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred.

  4. ILO-WHO International Chemical Safety Cards (ICSCs): Oxalic acid — densityILO-WHO International Chemical Safety Cards (ICSCs)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/971#section=Density. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred.

  5. Hazardous Substances Data Bank (HSDB): Oxalic acid — solubilityHazardous Substances Data Bank (HSDB)

    Retrieved through PubChem PUG View on 2026-09-08. https://pubchem.ncbi.nlm.nih.gov/compound/971#section=Solubility. Source value, complete property clause or compact miscibility statement retained; absent pressure, temperature or phase conditions are not inferred. Original reference: Yalkowsky SH et al; Arizona Data Base of Water Solubility (1989)