428Sodium Alginate Specifications
| Industry Grade | Food Grade | ||
| Agriculture Standard | Export Standard | Food additive standard | |
| Mesh size | As required | As required | |
| Viscosity mPa.s | 80-800 | As required | ≥150 |
| Moisture % | ≤15.0 | ≤15.0 | ≤15.0 |
| PH | 6.0-7.5 | 6.5-7.5 | 6.0-8.0 |
| Ca content% | ≤0.3 | ≤0.3;≤0.2 | |
| Ash | ≤24 | 30-37 sulfate ash | |
| Viscosity decline % | ≤20 | No below the requirement in the contract after one year | |
| White degree % | ≥30 | ||
| Insoluble matter in water % | ≤0.6 | ≤0.3 | |
| transparency cm | ≥4 | ||
| Heavy metal % | ≤0.004 | ||
| Arsenate % | ≤0.0002 | ||
| Lead (Pb) % | ≤0.0004 | ||
