L-Cysteine hydrochloride monohydrate for biochemistry 100GM | |||
10524SG100 | 304432212KS | ||
for biochemistry | 3044322 | ||
7048-04-6 | 59435 | ||
C3H7NO2S.HCl.H2O | November 2019 | ||
175.63 | October 2024 | ||
Sr.No. | Test | Result | Specification |
---|---|---|---|
1 | Description | White crystalline powder. Taste strongly acidic. | White crystals or crystalline powder.Taste strongly acidic. |
2 | Solubility | Passes | 10% solution in water is clear and colourless. |
3 | Assay (iodometric) | 99.35% | 98.50 - 100.50% |
4 | pH | 1.60 | 1.50 - 2.00 (In 0.05% aq. solution.) |
5 | Specific rotation | +5.6° | +5.5° to +7.0° (c=8, 1N HCl) |
6 | Transmission profile(10mm cell) | 96% | Min. 95.00% (@430nm,in 10% solution) |
7 | Ammonia(NH3) | Less than 0.02% | 0.02% max |
8 | Sulphate (SO4) | Less than 0.03% | 0.03% max |
9 | Iron (Fe) | Less than 0.003% | 0.003% max |
10 | Heavy metal (as Pb) | Less than 0.001% | 0.001% max |
11 | Arsenic (As) | Less than 0.0002% | 0.0002% max |
12 | Residue on ignition(as SO4) | 0.09% | 0.10% max |
Tested By (Chemist - Quality Control) | Approved By (Head - Quality Control) |