Propyl Paraben
| ITEM | SPECIFICATIONS |
| Characters | White crystalline powder |
| Purity (on dry base) % | 98.0-102.0 |
| Acidity (PH) | 4.0-7.0 |
| Melting point (°C) | 96-99 |
| Sulfate (SO42-) | =<300 ppm |
| Residue on Ignition (%) | =<0.10 |
| Completeness of solution | Clear and transparent |
| Organic volatile impurities | =<0.5 |
| Loss on Drying (%) | =<0.5 |
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| Item | Specification — FCC IV |
| Name | Erythorbic Acid |
| Appearance | White odorless, crystalline powder or granules |
| Assay(on dry basis) | 99.0 – 100.5% |
| Chemical Formula | C6H8O6 |
| Specific rotation | -16.5 — -18.0 º |
| Residue on ignitionc | < 0.3% |
| Loss on drying | < 0.4% |
| Particle size | 40 mesh |
| Heavy metal | < 10 ppm max |
| Lead | < 5 ppm |
| Arsenic | < 3 ppm |
- Specificaiton
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Item Specification — FCC IV Name Erythorbic Acid Appearance White odorless, crystalline powder or granules Assay(on dry basis) 99.0 – 100.5% Chemical Formula C6H8O6 Specific rotation -16.5 — -18.0 º Residue on ignitionc < 0.3% Loss on drying < 0.4% Particle size 40 mesh Heavy metal < 10 ppm max Lead < 5 ppm Arsenic < 3 ppm