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Shanghai Ruizheng Chemical Technology Co., Ltd.
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Name: Malic acid
Synonyms: DL-Hydroxybutanedioic acid
Molecular Formula: C4H6O5
Molecular Weight: 134.09
CAS Number: 6915-15-7
EINECS: 230-022-8
Malic acid is an organic compound with the formula HO2CCH2CHOHCO2H. This dicarboxylic acid is the active ingredient in many sour or tart foods. The salts and esters of malic acid are known as malates. Malate anion is an intermediate in the citric acid cycle along with fumarate. Ca. 1M kg/y are produced by the hydration of maleic anhydride. Malic acid is found mostly in unripe fruits.
Specification:
| Product Name | Malic acid |
| Index item | Specification |
| Appearance | White crystal powder |
| Assay (As C4H6O5) | 99.0-100.5% |
| Specific rotation [α]D25°C | -0.10 - +0.10 |
| Arsenic (as As2O3) | 4 mg/kg max |
| Heavy metals (Pb) | 10 mg/kg max |
| Fumaric Acid | 1.0% max |
| Maleic Acid | 0.05% max |
| Water-insoluble matter | 0.1% max |
| Residue on ignition | 0.1% max |
Package: Crystal product is 25kgs/compound bag; lined plastic bags;
Storage: Stored in a dry and cool place, keep away from strong light and heat.
Shelf life: Two years when stored properly in a well-closed container.