Zhejiang Worldbestve Biotechnology Co., Ltd. · Professional Manufacturer of Natural Vitamin E
Origin: China · Edition 2026
SPECIFICATION SHEETD-Alpha-Tocopheryl Acid Succinate
D-Alpha-Tocopheryl Acid Succinate
CAS No.: 4345-03-3 | White to off-white crystalline powder
CAS No.4345-03-3
FormWhite to off-white crystalline powder
StandardsGB 1886.233-2016, USP, FCC
Shelf Life24 Months
Specification
| Specification | Limit | Method |
|---|---|---|
| Appearance | White to off-white crystalline powder | In house |
| Identification | Passes tests | USP method C |
| Specific Rotation | Min. +24° | USP |
| Assay (alpha tocopheryl succinate) | Min. 96.0% | In house |
| Assay (IU/g) | Min. 1162 | In house |
| Melting Point | 72 – 78°C | In house |
| Acidity | 18.0 – 19.3 ml | USP |
| Heavy Metal (as Pb) | Max. 10 mg/kg | GB 5009.268-2016 |
| Lead | Max. 2 mg/kg | GB 5009.268-2016 |
| Arsenic | Max. 1 mg/kg | GB 5009.268-2016 |
| Cadmium | Max. 1 mg/kg | GB 5009.268-2016 |
| Mercury | Max. 0.1 mg/kg | GB 5009.268-2016 |
| Benzo[a]pyrene | Max. 2.0 ppb | In house |
| PAH4 | Max. 10.0 ppb | In house |
| Pesticide Residues | Complies with Regulation (EU) No. 396/2005 | In house by Eurofins |
| Residual Solvents | Complies with Directive 2009/32/EC | In house by Eurofins |
| Dioxins | Complies with Regulation (EU) No. 1881/2006 | In house by Eurofins |
| Melamine | Max. 2.5 mg/kg | In house by Eurofins |
| Total Plate Count | Max. 1000 cfu/g | USP<61> |
| Yeasts & Molds | Max. 100 cfu/g | USP<61> |
| Staphylococci | Negative | USP<61> |
| Salmonella | Negative | USP<61> |
| E. coli | Negative | USP<61> |
Available Grades
| Grade | Assay (IU/g) | Content | Packaging |
|---|---|---|---|
| TS-1185 | 1185 | ≥ 96.0% | 25 kg fiber drum (foil bag) |
| TS-1210 | 1210 | ≥ 96.0% | 25 kg fiber drum (foil bag) |
Packaging & Storage
Packaging: 25 kg fiber drum with inner foil bag.
Storage: Store in tightly closed containers, cool and dry. Protect from heat, light and oxygen.
Product Note: The only solid-form natural vitamin E derivative. Ideal for direct-compression tabletting and two-piece capsules; recommended for high-potency products.
This datasheet is a summary for customer reference. The binding quality is defined by the Certificate of Analysis (COA) shipped with each batch. Parameters are subject to optimization; please refer to the latest edition.
Worldbestve · sales@worldbestve.com · +86-579-88230768 · Lanxi, Zhejiang, China