Dental Abrasive silica(DA)
Item | Specification | ||
Type | DA113 | DA119 | DA124 |
DBP cm3/100g | 80-95 | 85-110 | 60-80 |
Silica(dry basis)% | 90 min | ||
Drying loss % | 4.0-7.0 | ||
Ignition loss (dry basis) % | 7.0 max | ||
pH(5% aqueous solution) | 7.2-8.2 | ||
Average Partical Size, um | 5-14 | ||
sieve residue 45um % | 1.5 max | ||
CI, mg/kg | 0.1 max | ||
Na2O, mg/kg | 1 max | ||
Na2SO4, mg/kg | 1.5 max | ||
Fe2O3, ppm | 300 max | ||
Al2O3, ppm | 2000 max | ||
Free Crystalline Silica | 1.0 max | ||
Microbial Content | 1000 max | ||
Pb | 10 max | ||
As | 3 max | ||
Hg | 3 max |