Pro Vitamin B5 (D-Panthenol)
Conclusion: The goods conform to the standards
Packaging: 25 KG/DRUM
Storage: Kept in dry, cool, and shaded place with original packaging, avoid moisture.
Shelf life: 24 months
D-Panthenol 75% Pharma Grade
| Items | Standards |
| Appearance | Colorless, viscous and clear liquid |
| Identification | Positive reaction |
| Assay | 75% ~ 78.5% |
| PH (5% solution) | 5.5~8.0 |
| Specific optical rotation | 29.0° ~ 31.5° |
| Limit of aminopropanol | Not more than 1.0% |
| Residue on ignition | Not more than 0.1% |
| Heavy Metals ≤ PPM | 20 |
D-Panthenol 98%
| Items | Standards |
| Appearance | Colorless, viscous and clear liquid |
| Identification | Positive reaction |
| Assay | 98.0% ~ 102.0% |
| Water | Not more than 1.0% |
| Specific optical rotation | 29.0° ~ 31.5° |
| Limit of aminopropanol | Not more than 1.0% |
| Residue on ignition | Not more than 0.1% |
| Refractive index(20 ℃ ) | 1.495 ~ 1.502 |
Panthenol (pantothenol) is the alcohol analog of pantothenic acid (vitamin B5), and is thus a provitamin of B5. In organisms it is quickly oxidized to pantothenate [pantothenic acid]. Panthenol is a highly viscous transparent liquid at room temperature, but salts of pantothenic acid (for example sodium pantothenate) are powders (typically white). It is soluble in water, alcohol, propylene glycol, ether and chloroform, and slightly soluble in glycerin.
Panthenol comes in two enantiomers, D and L. Only D-panthenol (dexpanthenol) is biologically active, however both forms have moisturizing properties. For cosmetic use, panthenol comes either in D form, or as a racemic mixture of D and L (DL-panthenol).
