L-Ascorbic acid CAS: 50-81-7 Dawb hmoov 99%
| Catalog Number | xwm 90439 |
| Khoom npe | L-Ascorbic acid |
| CAS | 50-81-7 : kuv |
| Molecular Formula | C6H8O6 |
| Molecular Luj | 176.12 Nws |
| Cov ntaub ntawv khaws cia | 2 txog 8 ° C |
| Harmonized tariff Code | 29362700 ib |
Khoom Specification
| Qhov tshwm sim | Dawb hmoov |
| Assay | 99% |
| Arsenic | 3 ppm max |
| Coj | 2 ppm max |
| pH | 2.1-2.6 |
| Poob rau ziab | <0.5% |
| Sulfated tshauv | 0.1% max |
| Hlau | 2 ppm max |
| Tooj | 5.0ppm max |
| Xim ntawm Kev daws | IB 7 max |
| Kev sib hloov kho qhov muag tshwj xeeb | 20.5 - 21.5 20.5 Nws |
| Mercury | 0.1ppm max |
| Organic Volatile Impurities | Ua raws |
| Mesh | <100 |
| Oxalic acid | 0.3% max |
| Residual Solvents | Ua raws |
| Clarity of Solution | Ntshiab |
| Cadmium (Cd) | 1 ppm max |
| Cov hlau hnyav (raws li Pb) | 10 ppm max |
| Tus kheej | Ua raws |
4-Nitrophenyl-N-acetyl-β- D-glucosaminide yog ib qho tseem ceeb substrate rau ceev colorimetric assay ntawm N-acetyl-b-glucosaminidase kev ua nyob rau hauv tib neeg cov zis.Chromogenic β-Glucosaminidase substrate yielding cov tshuaj daj thaum cleavage, ua haujlwm tshwj xeeb hauv cov poov xab thiab pwm.
Kaw
