L-Malic acid #CAS97-67-6
CAS Number:97-67-6
Chemical Formula:C4H6O5
Synonyms:
L-(-)-Malic acid, CP
Butanedioic acid, 2-hydroxy-, (2S)-
pinguosuan
Appearance: White Powder
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
L-Malic acid #CAS97-67-6
L-Malic acid is nearly odorless (sometimes a faint, acrid odor) with a tart, acidic taste. It is nonpungent. May be prepared by hydration of maleic acid; by fermentation from sugars.Malic acid exists in three forms: D-malic acid, DL-malic acid, and L-malic acid. L-malic acid, also known as 2-hydroxysuccinic acid, is an intermediate in the tricarboxylic acid cycle and is easily absorbed by the human body. Therefore, it is widely used in food, cosmetics, medical, and health products as a high-performance food additive and functional food. Malic acid, also known as 2-hydroxysuccinic acid, has two stereoisomers due to an asymmetric carbon atom in its molecule. In nature, it exists in three forms: D-malic acid, L-malic acid, and the mixture DL-malic acid. Malic acid is a white crystalline solid or crystalline powder with strong hygroscopic properties and is readily soluble in water and ethanol. It has a characteristic pleasant sour taste. L-malic acid is mainly used in the food and pharmaceutical industries.
Application of L-Malic acid
L-Malic acid is used as a food additive, Selective α-amino protecting reagent for amino acid derivatives. Versatile synthon for the preparation of chiral compounds including κ-opioid receptor agonists, 1α,25-dihydroxyvitamin D3 analogue, and phoslactomycin B.
The naturally occuring isomer is the L-form which has been found in apples and many other fruits and plants. Selective α-amino protecting reagent for amino acid derivatives. Versatile synthon for the preparation of chiral compounds including κ-opioid rece.
Intermediate in chemical synthesis. Chelating and buffering agent. Flavoring agent, flavor enhancer and acidulant in foods.
| 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℃ |
| FEMA | 2655 | L-MALIC ACID |
| refractive index | -6.5 ° (C=10, Acetone) |
| 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℃) |
| Odor | odorless |
| PH | 2.2 (10g/l, H2O, 20℃) |
| pka | (1) 3.46, (2) 5.10(at 25℃) |
| Odor Type | odorless |
| biological source | microbial |
| Optical Rotation | [α]20/D 30±2°, c = 5.5% in pyridine |
| 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 |
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