Organic Acids
REACH
L-malic acid
CAS Number
97-67-6
EC Number
202-601-5
FEMA Number
FEMA 2655
What is L-malic acid?
L-malic acid (CAS 97-67-6), also known as L-hydroxysuccinic acid, is a naturally occurring organic acid used in food, pharmaceutical, and cosmetic manufacturing.
Where is L-malic acid used?
- Food and beverage: acidulant, pH regulator, and flavor enhancer in fruit-flavored confectionery, soft drinks, and low-calorie products
- Pharmaceutical: pH adjuster in oral solutions, effervescent tablets, and chewable dosage forms
- Personal care: pH buffer in leave-on skin formulations and mild chemical exfoliant systems
- It also supports preservation in acidified food systems and topical cosmetic products.
Good to know: Its lingering tartness often outperforms citric acid in specific applications.
Commercial specifications
- Packaging from 25 kg bags to bulk quantities
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
What are the physical properties of L-malic acid?
Melting Point 130-132 °C
Boiling Point 167.16°C (rough estimate)
Density 1.025 g/cm³
Flash Point 220 °C
Appearance white crystalline powder or granules
Color White
Odor odorless
Form Powder
Water Solubility soluble
Vapor Pressure 0Pa at 25℃
Refractive Index -6.5 ° (C=10, Acetone)
pH 2.2 (10g/l, H2O, 20℃)
Log P -1.68
How is L-malic acid classified and handled safely? Learn More
Warning
GHS07· Irritant
Hazard Statements
H315 Causes skin irritation
H319 Causes serious eye irritation
Precautionary Statements
P264 Wash … thoroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P321 Specific treatment (see … on this label).
P264+P265 Wash … thoroughly after handling.
Which trade and regulatory codes apply to L-malic acid?
HS Code 29181980
WGK (Germany) 3