DL-Malic acid
Synonym(s):(±)-2-Hydroxysuccinic acid;DL -Hydroxybutanedioic acid;DL-Hydroxysuccinic acid, Hydroxybutanedioic acid;DL-Malic acid
- CAS NO.：617-48-1
- Empirical Formula: C4H6O5
- Molecular Weight: 134.09
- MDL number: MFCD00064212
- EINECS: 210-514-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-07-25 07:39:42
What is DL-Malic acid?
Description
White or nearly white, crystalline powder or granules having a strongly acid taste. One g dissolves in 0.8 mL of water and in 1.4 mL of alcohol. Its solutions are optically inactive. It melts at about 130°.
Chemical properties
white crystalline powder
The Uses of DL-Malic acid
DL-malic acid is primarily used in the food and beverage industry.
Definition
ChEBI: Malic acid is a 2-hydroxydicarboxylic acid that is succinic acid in which one of the hydrogens attached to a carbon is replaced by a hydroxy group. It has a role as a food acidity regulator and a fundamental metabolite. It is a 2-hydroxydicarboxylic acid and a C4-dicarboxylic acid. It is functionally related to a succinic acid. It is a conjugate acid of a malate(2-) and a malate.
Flammability and Explosibility
Non flammable
Purification Methods
Crystallise the acid from acetone, then from acetone/CCl4, or from ethyl acetate by adding pet ether (b 60-70o). Dry it at 35o under 1mm pressure to avoid formation of the anhydride. [Beilstein 3 IV 1124.]
Properties of DL-Malic acid
| Melting point: | 131-133 °C(lit.) |
| Boiling point: | 150℃[at 101 325 Pa] |
| Density | 1,609 g/cm3 |
| vapor density | 4.6 (vs air) |
| vapor pressure | <0.1 mm Hg ( 20 °C) |
| FEMA | 2655 | L-MALIC ACID |
| Flash point: | 203°C |
| storage temp. | Refrigerator |
| solubility | methanol: 0.1 g/mL, clear, colorless |
| form | Solid |
| pka | pK1:3.458;pK2:5.097 (25°C) |
| color | White to Off-White |
| Water Solubility | 500g/L at 25℃ |
| Stability: | Stable. Incompatible with strong oxidizing agents, strong bases, amines, alkali metals, carbonates. |
| CAS DataBase Reference | 617-48-1(CAS DataBase Reference) |
| EPA Substance Registry System | Butanedioic acid, hydroxy-(617-48-1) |
Safety information for DL-Malic acid
Computed Descriptors for DL-Malic acid
DL-Malic acid manufacturer
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