·Character Precipitated silicon dioxied features bigger specific surface area and well-proportioned granularity used as food additive.

·Uses It can be used as agent of anti-caking, tackifier and stabiliser in food, such as milk powder, cacao powder, cacao fat, powered sugar, vegetable fat, instant coffee, powdered soap staff and powdered essence. It also used as absorption, dryer and clarify agent in spice and essence.

·Technical standard: HG2791-1996, FCC-1983

Technical parameter

type	TOND-AS
item	figure
appearance	white powder
whiter	≥90
weight loss on heating	≤2.5
(900°C 2h)% ignition loss	≤2.0
g/ml apparent density	≤0.09
(Na2SO4 、NaC)% electorpositive	≤0.02
SiO2 %	≥99
mg/kg heavy metal (Pb)	≤30
mg/kg As	≤3.0
mg/kg Pb	≤10
PH	5.0-7.0
μm average granularity	≤3.0
DBP ml/g absorption	≥2.6