L-Ascorbic acid Cas: 50-81-7 White powder 99%
| Catalog Number | XD90439 |
| Product Name | L-Ascorbic acid |
|
CAS |
50-81-7 |
|
Molecular Formula |
C6H8O6 |
|
Molecular Weight |
176.12 |
| Storage Details | 2 to 8 °C |
| Harmonized Tariff Code | 29362700 |
Product Specification
| Appearance | White powder |
| Assay | 99% |
| Arsenic | 3ppm max |
| Lead | 2ppm max |
| pH | 2.1-2.6 |
| Loss on Drying | <0.5% |
| Sulphated Ash | 0.1 %max |
| Iron | 2ppm max |
| Copper | 5.0ppm max |
| Colour of Solution | BY7 max |
| Specific optical rotation | 20.5 - 21.5 @20 DegC |
| Mercury | 0.1ppm max |
| Organic Volatile Impurities | Conforms |
| Mesh | <100 |
| Oxalic acid | 0.3%max |
| Residual Solvents | Conforms |
| Clarity of Solution | Clear |
| Cadmium (Cd) | 1ppm max |
| Heavy metals(as Pb) | 10ppm max |
| Identity | Conforms |
4-Nitrophenyl-N-acetyl-β- D-glucosaminide is a useful substrate for rapid colorimetric assay of N-acetyl-b-glucosaminidase activity in human urine. Chromogenic β-Glucosaminidase substrate yielding a yellow solution upon cleavage, employed particularly in yeasts and molds.
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