Product name: Tannic acid Chemical name: 1,2,3,4,6-penta-O-{3,4-dihydroxy-5-[(3,4,5-trihydroxybenzoyl)oxy]benzoyl}-D-glucopyranose Molecular formula: C76H52O46 Molecular weight: 1701.19 Melting point: Decomposes above 200°C CAS: 1401-55-4(1) This product is widely used in extraction, acid iron ink manufacturing, metal rust prevention, mud conditioner for petroleum drilling, and raw material for pharmaceutical industry. (2) Textile printing solid used to produce leather tanning agent, mordant, rubber coagulant, protein agent, alkaloid precipitant. (3) Pharmaceutical products, such as raw materials for sulfa synergists (TMP). (4) Chemicals for preparing medicinal acid, pyrogallic acid and sulfa drugs, as well as Gallic Acid and Pyrogallol.
Uses| Specifications | Industrial grade |
| Implementation standards | LY/T1300-2005 |
| Content | ≥81% |
| Drying loss | ≤9% |
| Water insoluble matter | ≤0.6% |
| Color | ≤2.0 |
| Packing | Kraft paper bag, 25kg/bag |
| Production scale | 300T/Y |
SpecificationsAbout us
Leshan Sanjiang Bio-Tech Co., Ltd. is a tech firm founded by Xu Zhongyun, a world-renowned forestry scientist and Chief Researcher of the Southern Research Institute of the USDA Forest Service. The company was incorporated in the Leshan National High-tech Industrial Development Zone in 2003. Made from China's forestry specialties--Galla Chinensis and natural product Tara sourced from Peru, our products include pharmaceutical intermediates, electronic chemicals, food additives, etc.