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L-malic acid

CAS Number
97-67-6
EC Number
202-601-5
Chemical Formula
C4H6O5
Molecular Weight
134.09 g/mol

Description

L-malic acid ( CAS 97-67-6 ), also known as L-hydroxysuccinic acid, is a naturally occurring organic acid used across food, pharmaceutical, and cosmetic manufacturing. It functions primarily as an acidulant, pH regulator, and flavor enhancer. This compound delivers a smooth, tart taste profile preferred over sharper mineral acids in many formulations. In food and beverage production, it acidulates fruit-flavored confectionery, soft drinks, and low-calorie products. Its lingering tartness often outperforms citric acid in specific applications. Pharmaceutical formulators use it to adjust pH in oral solutions, effervescent tablets, and chewable dosage forms where taste masking is critical. In personal care, it acts as a pH buffer in leave-on skin formulations and mild chemical exfoliant systems. Its antimicrobial contribution also supports preservation in acidified food systems and topical cosmetic products. L-malic acid is supplied as a white crystalline powder or granule. Standard grades include food-grade ( FCC ), pharmaceutical-grade ( USP / BP ), and technical-grade for industrial applications. Packaging typically ranges from 25 kg bags to bulk quantities. Food and pharma grades are supported by full documentation including certificates of analysis and origin to ensure compliance with global safety standards. Contact us for supply of L-malic acid Request Quote

Other Names (Synonyms)

S-2-hydroxybutanedioic acid | S-(-)-malic acid | L-hydroxysuccinic acid | L-hydroxybutanedioic acid | (S)-hydroxybutanedioic acid | (S)-(-)-hydroxysuccinic acid | (2S)-2-hydroxysuccinic acid | (2S)-2-hydroxybutanedioic acid

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point130-132 °C
Boiling Point167.16°C (rough estimate)
Density1.025 g/cm³
Flash Point220 °C
Appearancewhite crystalline powder or granules
ColorWhite
Odorodorless
FormPowder
Water Solubilitysoluble
Vapor Pressure0Pa at 25℃
Refractive Index-6.5 ° (C=10, Acetone)
pH2.2 (10g/l, H2O, 20℃)
Log P-1.68

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H315Causes skin irritation
H319Causes serious eye irritation

Precautionary Statements

P264Wash … thoroughly after handling.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P321Specific treatment (see … on this label).
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29181980
WGK (Germany)3