China Cosmetic Grade Pure 97-59-6 Allantoin Powder, Find details about China Allantoin, Allantoin Powder Pharmaceutical Grade from Cosmetic Grade Pure 97-59-6 Allantoin Powder
Allantoin powder is a non-toxic, tasteless, non-irritating, non-allergic white crystals, water crystals for the single prism or
colorless crystalline powder. Can be dissolved in hot water, hot alcohol and dilute sodium hydroxid solution. Slightly soluble in water and alcohol at room temperature, insoluble in ether and chlorofor and other organic solvents; its saturated aqueous solution (concentration of 0.6%) was slightly acidic; PH 5.5. Stable in aqueous solution with a pH of 4-9. In non-aqueous solvents and dry air is also stable; in strong alkaline solution to boil and sun exposure can be decomposed.
ITEMS | STANDARD |
1. Appearance | white Powder |
2. Fineness | >500 |
3. Odor | Odorless |
4.Assay ( % ) | 98.50-101.00% |
5. PH | 4.00-6.00 |
6. Nitroren | 35.00-35.50 |
7. M.P( ºC ) | >225 |
8. Heavy metals ppm | ≤10ppm |
9. Loss on drying ( % ) | <0.20 |
10. Ash( % ) | <0.10 |
11.Optical rotation | -0.1°- +0.1° |
By Express | By Air | By Sea | ||
Suitable for under 50kg Fast: 3-7 days High cost Door to door service, easy to pick up the goods | Suitable for more than 50kg Fast: 3-7 days High cost Port to port, professional broker needed | Suitable for more than 500kg Slow: 7-45 days Low cost Port to port, professional broker needed |