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+86-13971029269
FAX：0086-27-82288295
Email: whcz_78@163.net
ADD.: Rm 1013,BLDG 3,Area C,Hankou City Plaza,Houhu Avenue,Wuhan
地址：武汉市江岸区后湖大道汉口城市广场C区3号楼1013
网址：www.zoyochem.com
| ITEM | STANDARD |
| Appearance | White to slightly yellow cr ystalline powder |
| Identification | Positive |
| Assay (as C 6H 7NaO 6) | 99.0 ‐ 101.0% |
| Specific optical rotation | +103° ‐ +106° |
| Clarity of solution | Clear |
| pH (10%, W/V ) | 7.0 ‐ 8.0 |
| Loss on drying | ≤ 0.25% |
| Sulphate (mg/kg) | ≤ 150 |
| Total heavy metals | ≤ 0.001% |
| Lead | ≤ 0.0002% |
| Arsenic | ≤ 0.0003% |
| Mercury | ≤ 0.0001% |
| Zinc | ≤ 0.0025% |
| Copper | ≤ 0.0005% |
| Residual Solvents (as Menthanol) | ≤ 0.3% |
| Total plate count (cfu/g) | ≤ 1000 |
| Yeasts & molds (cuf/g) | ≤ 100 |
| E.coli/ g | Negative |
| Salmonella/ 25g | Negative |
| Staphylococcus aureus/ 25g | Negative |
