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Silica used for silicon rubber

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Silica for silicon rubber

STANDARD: HG/T 3061-2009
CAS NO: 112926-00-8(7631-86-9)
EINECS No: 231-545-4
Product Description: The product has special physicochemical properties, thus it is the best transparent reinforcing additive. It can greatly increase the anti-aging property, rebound resilience and deformation resistance and other performances.

Standard :DB35/T 1208-2011

Items	HCP 140C	HCP 160C	HCP 180C
Appearance	Super-fine Powder
BET specific surface area m2/g	130-150	150-170	170-190
Silica(dry basis) %	≥ 96
Heating loss (105°C) % 加热减量	4.0-8.0
Loss on ignition (1000±25°C)%	≤7.0
PH-value(10%aqueous solution)	5.0-8.0
DBP Oil Absorption Value cm3/g	2.0-3.5
45um sieve Residue %	≤ 0.5
Soluble salt (Na2SO4)%	≤ 1.5
Cu mg/kg	≤ 30
Mn mg/kg	≤ 50
Fe mg/kg	≤ 300
Average grain diameter d50 μm	12-16