Item No.: 00112
DL-malic acid is primarily used in the food and beverage industry.Please leave your infomation, we will send some sample or case to you.
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Description Specification Applications
product information
DL-malic acid is mainly used in the food and beverage industry.
Basic information and chemical properties
form White or nearly white crystalline powder or granules
IF C 4 H 6 O 5
megawatt 134.09
melting point 131-133 °C (liters)
density 1,609 g/ cm3
Pka 11.86?0.20 (estimated)
Solubility  Soluble in water and ethanol
thing standard
appearance White crystal or crystalline powder
assay 99.0-100.5%
than rotation -0.10~+0.10
Residue on ignition 0.10% max
water - insoluble matter 0.1% max
fumaric acid 1.0% max
maleic acid Maximum 0.05%
Heavy metals (as Pb) 10 ppm max
Arsenic (As) 4 ppm max

In the food industry, it is used as a sour agent, a color-retaining agent, a preservative, an emulsion stabilizer for egg yolk, etc., and is also used in pharmaceuticals. It is generally believed that L-malic acid has important physiological functions, but half of the D-form in dl-malic acid is physiologically ineffective.
In the chemical industry, it can be used as one of the synthetic raw materials of descaling agent and fluorescent whitening agent. When added to shellac varnish or other varnishes, it prevents fouling of paint surfaces. Polyester resins and alkyd resins produced with this acid are special-purpose plastics.

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