L-Malic Acid
  • L-Malic-Acid

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.

ItemsSpecificationsResults
AppearanceWhite crystal or white crystalline powder, odorless, tasteless.white crystalline powder, odorless,tasteless.
SolubilityIt is very soluble in water, freely soluble in ethanol or acetone.Complies
Specific rotation-1.6°~-2.6°-1.9°
IdentificationChemical identification: Positive reactionComplies
IR: CompliesComplies
pH1.5~2.01.8
Clarity and color of solutionSolution should be clear and colorless.Complies
Light transmittance98%100%
Insoluble matter in water≤0.1%0.02%
Related substanceMaleic 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 solventTetrahydrofuran≤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 substanceShould conformComplies
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≤10ppmComplies
Bacterial endotoxin≤0.043EU/mgComplies
Microbial limitTotal aerobic microbial count(TAMC):≤1000cfu/gComplies
Total yeast and mould count(TYMC): ≤100cfu/g
Escherichia coli: Should not exist
Assay≥99.0%100.70%
ConclusionComplies with the requirement ofConclusion
specification protocol of L-malic acid
Containers and storageContainers—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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