Character: Precipitated silica used for rubber products can improve intensity of rubber tearing, toughness and wear-resisting.
Uses: Used for common rubber products, such as rubber sole, rubber roller and bicycle tyre.
Technical standard: HG/T 3061-1999
CAS: 112926-00-8 (7631-86-9)    EINECS: 231-545-4

Technical parameter

Type	TOND-180	TOND-180Gr
Appearance	White Powder	White Granule
Heating loss (105°C) %	4.0-7.0	4.0-7.0
Ignition loss (1000±25°C) %	4.0-6.0	4.0-6.0
SiO2 Content %	≥92	≥92
PH	6.5-7.5	6.5-7.5
Fe2O3 mg/kg	≤700	≤700
DBP Absorption cm3/g	2.5-3.0	2.0-2.5
45μm Sieve residue %	≤0.1	≤0.1
BET Specific surface area m2/g	170-200	170-200
Na2SO4 %	≤1.0	≤1.0
Sieve residue (200mesh) %	-	≥90
Sieve residue (40mesh) %	-	≥80
Tapped density g/l	270-290	330-350