open bidding
PENTAHYDRATE SODIUM METASILICATE
TIROTEX will purchase pentahydrate sodium metasilicate.
| Formula | Na2SiO3*5 H20 |
| CAS Nr | 10213-79-3 |
| EINECS Nr | 229-912-9 |
| UNO Nr | 3253 |
| RID/ADR | 8/41С |
| № п/п | PARAMETERS | VALUE | TEST METHOD |
|---|---|---|---|
| 1. | Appearance | White granulas | - |
| 2. | Na2O (%) | 28.8 ± 0.7 | ISO 1692 |
| 3. | SiO2(%) | 28.7 ± 0.7 | ISO 2124 |
| 4. | Dry solids content (%) | 57.5 ± 1.0 | Na2O + SiO2 |
| 5. | Molecular ratio | 1.03 ± 0.02 | ISO 1689 |
| 6. | Weight ratio | 1.00 ± 0.02 | ISO 1689 |
| 7. | pH (1%) | 12,5 ± 0,5 | - |
| 8. | Insoluble compound (%) | < 0,02 | ISO 2122 |
| 9. | Fe (ppm) | < 50 | ISO 6332 |
| 10. | Density (g/cm3) | 0.95 ± 0.1 | - |
NOTE:
Each consignment must be obviously provided with the Certificate of Origin EUR.1 or СТ-1.