Precipitate Silica

Precipitated silica is a white, powdered type of silica. Precipitated silica is created by precipitating silicate salts from a solution. Quartz sand, a crystalline form of silicon dioxide, is the source of precipitated silica, a synthetic form of amorphous silicon dioxide. There are numerous ways to control the precipitated silica’s physical characteristics during production, resulting in high-performance products for various end uses.

CAS NO  1343-98-2
MOLECULAR FORMULA  SiO2
MOLECULAR WEIGHT  60.08 gm/mol

 

 

 

Sr No Test Result Specification
01 Description Pass White Free Flowing Powder
02 pH (5 % w/v) Aq. Sus. 6.57 Between 6.0 to 7.0
03 Moisture Content* 3.9% NMT 5.0 % w/w
04 Heavy Metal Complies NMT 200 ppm
05 Si02 Content* Complies NL T 98.0 % w/w
06 L.O.D. At 110 °c 2 hrs.* 5.37% Between 5.0 to 5.5 % w/w.
07 Loss on Ignition 7.44% NMT 10.0 % w/w.
08 Ref active Index 1.454 – – –
09 B.E.T Surface area Pass Min.180 m2/gm
10 Particle Size Passing though 325 BSS Pass NL T 99.0 % w/w
11 Bulk Density Before Tapping

Bulk Density Afte Tapping

0.0714 gm/ml

0.0833 gm/ml

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12 Wate Absorption ml/100 qm* 270 ml/100 am Min. 180 ml/100 qm
13 Viscosity Pass 10 % Silica-Sorbitol w/w RV-3, 60 rpm
NLT 1000 cps
14 Microbiology Analysis (1)TVC

(2) Y & M

Complies

Complies

NMT 1000 cfu/gm &

NMT 100 cfu/am

Packaging for Precipitate Silica

25 kgs fibre drum inside polybag.

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