L‑Malic acid CAS#97‑67‑6
L‑Malic acid is a versatile natural organic acid. It is nearly odorless with an occasional faint acrid odor and delivers a pleasant tart, acidic taste without pungent irritation. Commercially, it can be manufactured through two main routes: hydration of maleic acid, or biological fermentation from sugar‑based feedstocks. Naturally occurring in fruits and wine, L‑Malic acid contributes significantly to flavor profile and plays a critical part in maintaining wine microbiological stability. This acid features excellent water solubility and stable physicochemical properties. Beyond wine applications, it acts as an effective acidulant, pH regulator and flavor modifier, widely utilized in food, beverages, cosmetics and fine‑chemical formulations. It helps balance acidity, enhance taste characteristics and keep formulation systems stable for mass industrial production.
Chemical Formula: C₄H₆O₅
Synonyms: L‑(-)‑Malic acid, L‑Hydroxybutanedioic acid, L‑Malic acid, CP
Appearance: White fine crystalline powder, free of lumps and visible foreign impurities
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load). Bulk full‑container supply with standard export‑grade packaging. Full set of export documents can be provided to support large‑volume production and long‑term supply partnerships.
| L-Malic acid Chemical Properties |
| Melting point | 101-103 °C (lit.) |
| alpha | -2 º (c=8.5, H2O) |
| Boiling point | 167.16°C (rough estimate) |
| bulk density | 600kg/m3 |
| density | 1.60 |
| vapor pressure | 0Pa at 25℃ |
| refractive index | -6.5 ° (C=10, Acetone) |
| FEMA | 2655 | L-MALIC ACID |
| Fp | 220 °C |
| storage temp. | Store below +30°C. |
| solubility | H2O: 0.5 M at 20 °C, clear, colorless |
| form | Powder |
| color | White |
| Specific Gravity | 1.595 (20/4℃) |
| PH | 2.2 (10g/l, H2O, 20℃) |
| pka | (1) 3.46, (2) 5.10(at 25℃) |
| Odor | odorless |
| Odor Type | odorless |
| Optical Rotation | [α]20/D 30±2°, c = 5.5% in pyridine |
| biological source | microbial |
| Water Solubility | soluble |
| Merck | 14,5707 |
| JECFA Number | 619 |
| BRN | 1723541 |
| Cosmetics Ingredients Functions | BUFFERING |
| InChI | 1S/C4H6O5/c5-2(4(8)9)1-3(6)7/h2,5H,1H2,(H,6,7)(H,8,9)/t2-/m0/s1 |
| InChIKey | BJEPYKJPYRNKOW-REOHCLBHSA-N |
| SMILES | O[C@@H](CC(O)=O)C(O)=O |
| LogP | -1.68 |
| CAS DataBase Reference | 97-67-6(CAS DataBase Reference) |
| NIST Chemistry Reference | Butanedioic acid, hydroxy-, (s)-(97-67-6) |
| EPA Substance Registry System | Butanedioic acid, 2-hydroxy-, (2S)- (97-67-6) |
| Safety Information |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36-37/39 |
| WGK Germany | 3 |
| RTECS | ON7175000 |
| TSCA | TSCA listed |
| HS Code | 29181980 |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Eye Irrit. 2 Skin Irrit. 2 |
