Basic Product Information
Product name: L-Lactic Acid
CAS: 79‑33‑4 (General CAS 50-21-5)Molecular Formula：C3H6O3
Molecular Weight：90.08
Synonym (S)-2‑Hydroxypropanoic acid
EINECS 201‑196‑2
Appearance Colorless clear viscous liquid
Physicochemical Properties
L‑Lactic acid: 80‑88% (typical food grade)
Optical Rotation [α]₂₀ᴰ ‑12° ~ ‑14°
Boiling point 122℃ (15 mmHg)
Melting point 18℃
Density 1.20‑1.22 g/cm³ @25℃
pH(1% aqueous) 2.0‑2.5Solubility Miscible with water, ethanol; slightly soluble in ether
Quality Specification (Food Grade 80‑88%)
| Test Item | Standard |
|---|---|
| L‑Lactic Acid Content | 80.0‑88.0 % |
| Optical rotation (20℃) | ‑12.0° ~ ‑14.0° |
| Chloride (Cl⁻) | ≤ 0.001 % |
| Sulfate (SO₄²⁻) | ≤ 0.005 % |
| Heavy metals (Pb) | ≤ 10 mg/kg |
| Iron (Fe) | ≤ 10 mg/kg |
| Citric, oxalic, phosphoric acid | Pass test |
| Residue on ignition | ≤ 0.1 % |
| Arsenic (As) | ≤ 1 mg/kg |
Application & Use
Food industry: Acidity regulator, preservative, flavoring agent for beverages, confectionery, pickles, baking.
Cosmetics: PH adjuster, moisturizer, exfoliating agent in skin‑care formulations.
Pharmaceutical: Raw material for drug synthesis, pharmaceutical excipient.
Industrial: Raw material for PLA (polylactic acid) biodegradable polymer, water treatment, electroplating.
Packing
25kg / 250kg plastic drum; IBC tank 1000L.
Storage & Transportation
Store in cool, dry, well‑ventilated warehouse, avoid direct sunlight and high temperature.
Keep tightly closed, separate from strong bases, oxidizing agents.
Transport as non‑hazardous goods; avoid leakage.
Disclaimer: Above data represents typical values for reference only, not contractual specification.
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