Succinic acid
Succinic acid is an alpha,-dicarboxylic acid resulting from the formal oxidation of each of the terminal methyl groups of butane to the corresponding carboxy group. It is an intermediate metabolite in the citric acid cycle. It has a role as a micronutrient, an anti-ulcer drug, a nutraceutical, a radiation protective agent and a fundamental metabolite. It is an alpha,omega-dicarboxylic acid and a C4-dicarboxylic acid. It is a conjugate acid of a succinate(1-).
IUPAC: butanedioic acid
PubChem
Physical & Chemical Properties
| Melting Point | 363 to 365 °F (NTP, 1992) |
| Boiling Point | 455 °F at 760 mmHg (Decomposes) (NTP, 1992) |
| Density | 1.572 at 68 °F (NTP, 1992) - Denser than water; will sink |
| Solubility | 5 to 10 mg/mL at 72 °F (NTP, 1992) |
| Flash Point | 160 °C (open cup) |
| Vapor Pressure | 0.00000019 [mmHg] |
| pH | pH = 2.7 (0.1 molar aq soln) |
| Appearance | Succinic acid appears as white crystals or shiny white odorless crystalline powder. pH of 0.1 molar solution: 2.7. Very acid taste. (NTP, 1992) |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2917
Data: UN Comtrade
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