CAS number： 9004-32-4
Molecular formula： C8H16NaO8
molecular weight： 265.204
Chemical structure：
| Product name | CMC（Carboxymethylcellulose Sodium） | |
| Shelf life | Two Years | |
| Inspection standard | Standard USP32 | |
| Items | Specification | Results |
| Identification A to C | Complies | Conforms |
| Appearance | White to cream-colored powder or granules | Conforms |
| Viscosity (2% water solution) | 5000-15000mpa.s | 5600mpa.s |
| PH | 6.5-8.5 | 6.9 |
| Loss on drying | ≤10.0% | 4.3% |
| Chloride | ≤1.0% | 0.9% |
| Heavy metals | ≤20ppm | ＜20ppm |
| Organic volatile impurities | Complies | Conforms |
| Assay(Na) | 6.5-9.5% | 8.2% |
| Conclusion | It conforms above test of USP32. | |
