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 Products
L-Hydroxproline
| Test Items |
Standard |
| Description |
White crystals or
crystalline powder |
| Identification |
Meets the requirements |
| Specific Rotation [α]20D |
-74.0°to -77.0° |
State of solution
(Transmittance) |
not less than 95.0% |
| Chloride(CI) |
not more than 0.020% |
| Ammonium(NH4+) |
not more than 0.02% |
| Sulfate (SO42- ) |
not more than 0.020% |
| Iron(Fe) |
not more than 10PPM |
| Heavy metals (Pb) |
not more than 10PPM |
| Arsenic (As2O3) |
not more than 1PPM |
| Other amino acids |
chromatographically
not detectable |
| Loss on drying |
not more than 0.2% |
Residue on ignition
(sulfated) |
not more than 0.1% |
L-Hydroxyproline content
(dry basis) |
98.5% - 101.0% |
| PH |
5.0 - 6..5 |
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