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L-Malic Acid

CAS#87-69-4

L-Malic Acid is internationally recognized as a safe food additive, as sour agents.
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Introduction

Malic acid is internationally recognized as a safe food additive, as sour agents, preservatives and Ph value regulator with its gentle acidity and a long persistence, sour citric acid stronger than 20%. It can be used for various types of food, according to production needs appropriate use.

Items Specifications Results
Appearance White crystal or white crystalline powder, odorless, tasteless. white crystalline powder, odorless,tasteless.
Solubility  It is very soluble in water, freely soluble in ethanol or acetone. Complies
Specific rotation -1.6°-2.6° -1.9°
Identification Chemical identification: Positive reaction Complies
IR: Complies Complies
pH 1.52.0 1.8
Clarity and color of solution Solution should be clear and colorless. Complies
Light transmittance 98% 100%
Insoluble matter in water ≤0.1% 0.02%
Related substance Maleic acid≤0.01% Not detected
Fumaric acid≤0.10% 0.00%
Other maximum unknown impurity≤0.05% 0.01%
Other total impurities<0.20% 0.01%
Residual solvent Tetrahydrofuran≤0.072% Not detected
Ethyl acetate≤0.5% 0.06%
Dichloromethane≤0.06% 0.01%
Water ≤2.0% 0.25%
Calcium salt ≤0.02% Complies
Readily oxidizable substance Should conform Complies
Chloride ≤0.005% Complies
Sulfate ≤0.01% Complies
Arsenic salt ≤0.0001% Complies
Residue on ignition ≤0.1% 0.01%
Arsenic salt ≤0.0003% Complies
Heavy metals ≤10ppm Complies
Bacterial endotoxin ≤0.043EU/mg Complies
Microbial limit Total aerobic microbial count(TAMC):≤1000cfu/g Complies
Total yeast and mould count(TYMC): ≤100cfu/g
Escherichia coli: Should not exist
Assay ≥99.0% 100.70%
Conclusion Complies with the requirement of Conclusion
specification protocol of L-malic acid
Containers and storage Containers—Tight containers Storage—Light-resistant and cool place


Functions and Applications

L(+)-tartaric acid is widely used as a sour agent in beverages and other foods, in wine, soft drinks, confectionery, bread, and certain gelatinous sweets.

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