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Melting point: 154-164°C (decomposes)
Boiling point: 552.7°C at 760mmHg
Density: 1.954g/cm3
Refractive index: 97 ° (C=10, H2O)
Typical Properties
| Item | Specifications |
| Assay | 98.0%-100.5% |
| Description | White crystalline powder |
| Identification | Positive |
| Specific Rotation(at 25℃) | +95.5°～ +98° |
| pH(10%) | 5.5-8.0 |
| Loss on drying | ≤0.25% |
| Lead | ≤2ppm |
| Heavy metals(as Pb) | ≤10ppm |
| Arsenic | ≤3ppm |
| Mercury | ≤1ppm |
| Sodium | Passes test |
| Ascorbic Acid/Colour reaction | Freely soluble in water,very slightly soluble in ethanol |
| Solubility | Passes test |
| Oxalate | Passes test |
Usage
Used as food antioxidants, anti-corrosion color additives and cosmetic antioxidants. It can consume oxygen in cosmetics, reduce high-valent metal ions, transfer the redox potential to the reduction range, and reduce the generation of undesirable oxidation products. It can also be used as anticorrosive color additive.
Packaging and Shipping
25KG/ carton.
Storage
keep low-temperature drying and avoid sunlight.
Melting point: 154-164°C (decomposes)
Boiling point: 552.7°C at 760mmHg
Density: 1.954g/cm3
Refractive index: 97 ° (C=10, H2O)
Typical Properties
| Item | Specifications |
| Assay | 98.0%-100.5% |
| Description | White crystalline powder |
| Identification | Positive |
| Specific Rotation(at 25℃) | +95.5°～ +98° |
| pH(10%) | 5.5-8.0 |
| Loss on drying | ≤0.25% |
| Lead | ≤2ppm |
| Heavy metals(as Pb) | ≤10ppm |
| Arsenic | ≤3ppm |
| Mercury | ≤1ppm |
| Sodium | Passes test |
| Ascorbic Acid/Colour reaction | Freely soluble in water,very slightly soluble in ethanol |
| Solubility | Passes test |
| Oxalate | Passes test |
Usage
Used as food antioxidants, anti-corrosion color additives and cosmetic antioxidants. It can consume oxygen in cosmetics, reduce high-valent metal ions, transfer the redox potential to the reduction range, and reduce the generation of undesirable oxidation products. It can also be used as anticorrosive color additive.
Packaging and Shipping
25KG/ carton.
Storage
keep low-temperature drying and avoid sunlight.
