Character: Precipitated silica dioxide used for tooth industry features low structure, low wet filtering rate, low water content, low specific surface area, low oil absorbing capacity, high friction and high filling density. It can be used as friction agent and tackifier in tooth and cosmetic industries.
Uses: Used for toothpaste and cosmetic industry.
CAS: 112926-00-8 (7631-86-9)    EINECS: 231-545-4

Technical parameter

Type	TOND-140	TOND-120	TOND-160
Item	Figure	Figure	Figure
Appearance	White powder
WG	≥96	≥96	≥96
PH	6.5-8.5	7.5-9.0	5.5-8.0
Under sieve 220mesh %	100	100	100
Under sieve 320mesh %	≥98	≥98	≥98
Weight loss on heating (105°C) %	≤8.0	≤8.0	≤8.0
Ignition loss(900°C 2h) %	≤8.5	≤8.0	≤10.0
Absorbency ml/20g	22-34	17-22	>34
Apparent density g/ml	≥0.25	≥0.35	≤0.25
Electorpositive %	≤0.3	≤0.3	≤0.3
N	1.440-1.465	1.440-1.465	1.440-1.465
SiO2 %	≥96	≥96	≥96
Sulphide	-	-	-
Reductive sulfur mg/kg	≤5.0	≤5.0	≤5.0
Heavy metal (Pb) mg/kg	≤20	≤20	≤20
As mg/kg	≤2.0	≤2.0	≤2.0
Hg mg/kg	≤1.0	≤1.0	≤1.0
Bacteria quantity cfu/g	≤150	≤150	≤150