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Fumed Silica

Fumed Silica

It is a white and colloidal micro-particle with its primary micro-particle from 5-40nm and has obvious properties such as thixotropy, reinforcing, thickening and filling etc. and is insoluble in all kinds of solvents and liquids except hydrofluoric acid and concentrated bases.

Product Data

Model

Item

LN-150

LN-200

LN-300

LN-380

Appearance

Fluffy White Powder

BET Surface (m²/g)

150±25

200±25

300±30

380±30

pH Value(in 4% aqueous dispersion)

3.8-4.3  

Sieve residue(%)

≤0.02

≤0.03

≤0.03

≤0.03

Burning loss(%)

≤1.5

≤2.0

≤2.0

≤2.0

Heating loss(%)

≤1%

≤1%

≤3%

≤3%

Tamped Density(g/l)

≤50

≤50

≤50

≤50

DBP(ml/g)

2.7-3.0

2.7-3.0

≥3.0

≥3.0

SiO2(%)

≥99.9

Fe2O3(ppm)

<30

<30

<30

<30

Al2O3(ppm)

≤300

TiO2(ppm)

≤300

Chloride mass fraction(%)

≤0.025

≤0.025

≤0.025

≤0.025