DL-Malic Acid

Description
Malic acid appears as white or off‑white crystalline powder/granules with a strong acidic taste. 1 g dissolves in 0.8 mL water or 1.4 mL alcohol. Its solutions are optically inactive, with a melting point of approx. 130 °C.
Application
DL‑malic acid is synthetically manufactured from fumaric acid. Since humans cannot metabolize it, safety concerns remain despite its approval as a food additive in Europe and America.
Major applications:

1. Food industry: acidulant for beverages and food, color‑retaining agent for fruit drinks, and preservative/emulsion stabilizer (e.g. for mayonnaise).
2. Industrial & raw‑material use: raw material for pharmaceuticals, cosmetics, dental detergents and metal cleaners; also used as buffers, textile anticoagulants, industrial deodorants, polyester fluorescent whitening agents, and for alkyd resin production.
3. As flavor enhancer, flavoring agent, pharmaceutical auxiliary and pH regulator: US regulation limits its content to max 6