RonasChemical
L-Hydroxyproline
|
Product |
L-Hydroxyproline |
|
|
CAS NO. |
51-35-4 |
|
|
No. |
Tests |
Specifications |
|
1 |
Appearance |
White
crystals or crystalline powder |
|
2 |
Specific rotation [α]D²⁰ |
-74.0°~-77.0° |
|
3 |
Chloride (Cl) |
≤0.020% |
|
4 |
Ammonium (NH₄) |
≤0.02% |
|
5 |
Sulfate (SO₄) |
≤0.02% |
|
6 |
Iron
(Fe) |
≤10ppm |
|
7 |
Heavy
metals (Pb) |
≤10ppm |
|
8 |
Arsenic (As₂O₃) |
≤1ppm |
|
9 |
Other
amino acids |
Chromatographically not detectable |
|
10 |
Loss
on drying |
≤0.2% |
|
11 |
Residue on ignition |
≤0.1% |
|
12 |
Assay |
98.5~101.0% |
|
13 |
PH |
5.0~6.5 |
