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Two forms of vitamin A are available in the human diet: preformed vitamin A (retinol and its esterified form, retinyl ester) and provitamin A carotenoids. Specification of (Acetate & Palmitate)
| Items | Specification |
| Description | Slightly yellow solid or yellow oily liquid, EP |
| Identification A: Thin-Layer Chromatographic B: Related substance C: Color reaction | To conform, EPTo conform, EPTo conform, EP |
| Related substance ratios A300/A326 A350/A326 A370/A326 | ≤ 0.60, EP≤ 0.54, EP≤ 0.14, EP |
| Retinol | ≤ 1.0% , EP ( or HPLC) |
| Acid Value | ≤ 2.0% , EP |
| Peroxide value | ≤10.0, EP |
| Heavy metals ( as pb) | ≤ 5 mg/kg, CP |
| Arsenic | ≤ 1 mg/kg, CP |
| Microbiological tests Total bacteria count Total mold& yeast count Coliforms Salmonella | ≤ 1000 cfu/g, GB/T 4789≤ 100 cfu/g, GB/T 4789Less than 30 mpn 100G, GB/T 4789n.d /10g, SNO332 |
| Assay | ≥1,700,000 IU/g, EP |
