| Item |
Standard |
| Appearance |
White crystalline granular |
| Assay(On dry basis) |
98.0%~102.0% |
| Specific Rotation(α)20D |
+14.5°~+16.5° |
| Transmittance |
95%minimum |
| Loss on Drying |
4.5%maximum |
| Residue on Ignition |
0.2%maximum |
| Heavy Metals(as Pb) |
<10ppm |
| PH data |
4.5~6.0 |
| Lead |
<1ppm |
| Arsenic |
<3ppm |
| Other Related Substances |
<2.0% |
5-benzyl-3.6-dioxo-2-
Piperazineacetic Acid(DKP) |
<1.5% |
Since 1998, TNN Group has been founded for 2 decades. Head quarter locates in Dalian -the most beautiful coastal city in Liaoning, China. Currently, TNN has 31 staffs, self-owned offices, cooperative laboratory, independent e-commerce platform, ISO9001 and CE certification, independent trademark and other high-level professional office equipment and institutional certifications, 3 overseas companies, 2 domestic offices and two subsidiaries.
Audited Supplier 
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