Vitamin E is a group of fat soluble compounds that include four tocopherols and four tocotrienols.It is one of the most important antioxidants. It is Fat-soluble organic solvents such as ethanol, and insoluble in water, heat, acid stable, base-labile. Vitamin E cannot be synthesized by the body itself but need to be obtained from the diet or supplements. The main four components of natural vitamin E, including naturally-occurring d-alpha, d-beta, d-gamma and d-delta tocopherols. Compared to the synthetic form (dl-alpha-tocopherol), the natural form of vitamin E, d-alpha-tocopherol, is better retained by the body. The bio availability (availability for use by the body) is 2:1 for natural-source Vitamin E over synthetic Vitamin E.
Product Name | Vitamin E Oil | |
Shelf Life | 3 years | |
Item | Specification | Result |
Description | Clear, colourless slightly greenish-yellow, viscous, oily liquid, EP/USP/FCC | Clear, slightly greenish-yellow, Viscous, oily liquid |
Identification | ||
A Optical rotation | -0.01° to +0.01°, EP | 0.00° |
B IR | To conform, EP/USP/FCC | conform |
C Color reaction | To conform, USP/FCC | conform |
D Retention time, GC | To conform, USP/FCC | conform |
Related Substances | ||
Impurity A | ≤5.0%, EP | <0.1% |
Impurity B | ≤1.5%, EP | 0.44% |
Impurity C | ≤0.5%, EP | <0.1% |
Impurity D and E | ≤1.0%, EP | <0.1% |
Any other impurity | ≤0.25%, EP | <0.1% |
Total impurities | ≤2.5%, EP | 0.44% |
Acidity | ≤1.0ml, USP/FCC | 0.05mL |
Residual Solvents (Isobutyl acetate) | ≤0.5%, In-house | <0.01% |
Heavy metals (Pb) | ≤2mg/kg,FCC | <0.05mg/kg(BLD) |
Arsenic | ≤1mg/kg,In-house | <1mg/kg |
Copper | ≤25mg/kg,In-house | <0.5m/kg(BLD) |
Zinc | ≤25mg/kg,In-house | <0.5m/kg(BLD) |
Assay | 96.5% to 102.0%, EP96.0% to 102.0%, USP/FCC | 99.0%, EP99.0%, USP/FCC |
Microbiological tests | ||
Total aerobic microbial count | ≤1000cfu/g,EP/USP | Certified |
Total yeasts and moulds count | ≤100cfu/g,EP/USP | Certified |
Escherichia coli | n.d./g,EP/USP | Certified |
Salmonella | n.d./g,EP/USP | Certified |
Pseudomonas aeruginosa | n.d./g,EP/USP | Certified |
Staphyloscoccus aureus | n.d./g,EP/USP | Certified |
Bile-Tolerant Gram-Negative Bacteria | n.d./g,EP/USP | Certified |
Conclusion: Conform to EP/USP/FCC |

Hebei Huanwei Biotech Co.,Ltd was established in 2016 and located in Shijiazhuang, Hebei Province, China. Our advantage raw material products are widely used in pharmaceutical and food industry, such as Vitamins,Nutritional Ingredients, Food Additives,Dietary Supplements, Amino Acid, APIs and so on. Besides, we supply OEM/ODM products of Dietary-supplement, including Softgel, Tablet, Hard Capsule, Functional Beverage, Gummy and others.
Huanwei Biotech has obtained the certification of ISO9001, ISO14001, ISO45001 and have been awarded Ecovadis Bronze Medal in 2023. At present we have been supplying products and services to customers in more than 20 countries in Europe, North America, South America, Africa, Southeast Asia, etc.
Q1: Are you a factory or a trading company?
A1: We are a trading company which built in 2016, our main sales staff have many years industry experience.
Q2: How do you control the quality?
A2:
1. We only select high-quality material from famous manufacturers.
2. We have a standardized production process with traceable records
3. We're certified by ISO9001 and ISO22000 Quality management system.
Q3: Can I get samples?
A3: Yes, we can supply specified quantity free sample, you pay for the freight charge only.
Q4: Which documents can you provide?
A6: We can supply Commercial Invoice, Packing List, Country of Origin, Insurance Policy, Bill of loading, COA, MSDS, and so on.
Q5: What Payment terms do you accept?
A7: T/T, L/C, D/P etc.