DL-Malic Acid CAS#6915-15-7
Appearance: White crystalline powder or granules, odorless or with a faint acidic odor.
Solubility: Highly soluble in water (558 g/L @ 20°C); soluble in ethanol, methanol, and acetone; insoluble in benzene.
Stability: Stable under normal conditions. Hygroscopic. Avoid high temperature and strong bases.
Key Feature: A racemic mixture (equal parts D- and L-malic acid) with a clean, smooth, and long-lasting sour taste.
Chemical & Physical Properties
| Property | Value |
|---|---|
| Molar Mass | 134.09 g/mol |
| Melting Point | 131-133 °C |
| Density | 1.60 g/cm³ |
| pH (1% Solution) | ~2.3 (Acidic) |
| Boiling Point | 306.4 °C (decomposes) |
| Flash Point | 153.4 °C |
| Form | Crystalline powder / Granules |
| Color | White to off-white |
| EINECS No. | 210-514-9 |
| HS Code | 2918191000 |
| Storage | Sealed, dry, cool place; avoid moisture |
Safety & Hazard Information
| Item | Details |
|---|---|
| GHS Classification | Warning (GHS07) |
| Hazard Statements | H319 (Causes serious eye irritation) |
| Risk Codes | R36/37/38 (Irritating to eyes, skin, respiratory system) |
| Safety Codes | S26 (Eye wash), S36 (Protective clothing) |
| WGK Germany | 1 (Slightly water hazardous) |
| LD50 (Oral, Rat) | ~1.6-3.2 g/kg (Low acute toxicity) |
| Food Grade | FCC, E296 (Approved for food use) |
Primary Applications
Food & Beverage:
Acidulant and flavor enhancer in soft drinks, juices, and confectionery.
Improves taste and extends shelf life in jams, canned foods, and dairy.
Provides a smoother, longer-lasting sourness compared to citric acid.
Industrial & Daily Chemical:
pH regulator in cosmetics and personal care products.
Raw material for chemical synthesis and metal cleaning.
Pharmaceutical:
Excipient for effervescent tablets and oral solutions.
Packaging & Storage
Packaging: 25kg net paper/plastic bags, fiber drums.
Storage: Keep in tightly closed containers, protect from moisture and heat.
Shelf Life: 24 months under proper storage.
