Silicon Dioxide For Toothpaste


Oral cleaning and care products

 

Executive standard: QBT2346-2015

 

Project Friction series Comprehensive series Zeng thick series

Physical and

chemical indicators

105 ℃ volatile matter/% ≤ 10 10 10
Loss on ignition of dry agent (1000 ℃)/% ≤ 8.5 8.5 8.5
Total salt (Na2SO4+NaCl)/% ≤ 2.0 2.0 2.0
Whiteness (WG)% ≤ 93 96 96
Water absorption/(mL/20g) ≤ <30 30-42 >42
Silicon dioxide content/% ≤ 96 96 96
Iron content/(m/gkg) ≤ 350 350 350
Sulfide Colorless mark Colorless mark Colorless mark

 

 

Food grade silica

 

Executive standard: GB25576

 

Project Class I Class Ⅱ Class Ⅲ
Silica content (after ignition) w/%≥ 99.3 99.0 96.0
Loss on drying w% ≤ 2.5 70.0 7.0
Loss on ignition, w/% ≤ 2.0 8.5 0.50
Lead (pb) / (mg/kg) ≤ 5
Heavy metals (in Pb ) / (mg/kg)  w/% ≤ 30
Arsenic / (mg/kg) ≤ 3
Soluble dissociated salt, (Calculated as Na2SO4),w/% ≤ / 1 4