Brief:
Malic acid, also known as 2-hydroxysuccinic acid, has two stereoisomers due to an asymmetric carbon atom in the molecule. In nature, it exists in three forms, namely D-malic acid, L-malic acid and a mixture thereof DL-malic acid. White crystal or crystalline powder, which has strong hygroscopicity and is easily soluble in water and ethanol. Have a special pleasant sour taste. Malic acid is mainly used in the food and pharmaceutical industries.
COA
| Test |
Requirement |
Result |
| ASSAY (%) |
99.0 -100.5 |
99.2 |
| SPECIFIC ROTATION |
-0.1 -- +0.1 |
0 |
| MELTING RANGE (ºC) |
127-132 |
130 |
| WATER INSOLUBLES (%) |
MAX 0.1 |
0.01 |
| SULPHATED ASH(%) |
MAX 0.1 |
0.06 |
| FUMARIC ACID (%) |
MAX 1.0 |
0.56 |
| MALEIC ACID(%) |
MAX 0.05 |
0.01 |
| HEAVY METALS PPM |
NMT 10 |
<10 |
| ARSENIC PPM |
MAX 2 |
< 2 |
| LEAD PPM |
MAX 2 |
< 2 |
| MERCURY PPM |
MAX 1 |
<1 |
| IDENTIFICATION TEST |
IR ABSORPTION |
COMFORMED |
| Conclusion: |
The product complies with the standard above. |
Application:
DL malic acid is used as an acid stabilizer, a color retention agent, a preservative, and an emulsion stabilizer for egg yolk, etc. in the food industry. DL malic acid is also used in pharmaceuticals.
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