Product Description
Product Name: L-Malic Acid
Synonyms:
(-)-Hydroxysuccinic acid
(2S)-2-Hydroxybutanedioic acid
(S)-Malic acid
Apple acid
S-2-Hydroxybutanedioic acid
CAS No.: 97-67-6
Formula: C4H6O5
Molecular Weight: 134.09
EINECS: 202-601-5
Appearance: Clear, colorless liquid.
Solubility in water: Very soluble
Product Parameters
| Item |
Specification |
Result |
| Content (as C4 H6O5),Wt % |
99 min |
99.3 |
| Specific Rotation |
-1.6~-2.6 |
-2.1 |
| Arsenic,Ppm |
2 max |
<2 |
| Lead (Pb),ppm |
2 max |
<2 |
| Sulfate(SO4),Wt% |
0.02 max |
<0.02 |
| Chloride,Wt% |
0.004 max |
<0.004 |
| Residue on ignition,Wt% |
0.1 max |
0.03 |
| Maleic acid,Wt% |
0.05 max |
0.01 |
| Fumaric Acid, Wt% |
0.5 max |
0.02 |
| Heavy metals, ppm |
10.0 max |
<10 |
| Appearance |
White crystal or Crystalline powder |
White crystal or Crystalline powder |
Application
L-Malic acid is nearly odorless (sometimes a faint, acrid odor). This compound has a tart, acidic, nonpungent taste.
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.Intermediate in chemical synthes Flavoring agent, flavor enhancer and acidulant in foods.
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