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SNOWTEX®

SNOWTEX®

SNOWTEX® is the trade name for Nissan Chemical's nano-size silica particles dispersed in water.
It is classified by the particle size, particle shape, pH, and dispersion stabilizer.
SNOWTEX® can be used for a wide variety of applications.


  • ST-30


  • MP-1040


  • ST-UP


  • ST-PS-M

General-Use(Primary particle size: 5-100 nm; spherical)

    Primary particle size (nm)
pH Dispersion
stabilizer
4-6 10-15 20-25 40-50 70-100
Alkaline NaOH ST-XS ST-30 ST-50 ST-20L ST-ZL
NH4OH ST-NXS ST-N ST-N-40 - -
Acidic None ST-OXS ST-O ST-O-40 ST-OL -

Large-Particles(Primary particle size: 70-480 nm; spherical)

    Primary particle size (nm)
pH Dispersion
stabilizer
70-130 170-230 420-480
Alkaline NaOH MP-1040 MP-2040 MP-4540M

Specially Treated Particles(Primary particle size: 5-50 nm; spherical)

      Primary particle size (nm)
Type pH Dispersion
stabilizer
4-6 10-15 20-25 40-50
Enhanced
stability
Alkaline NaOH ST-CXS ST-C ST-CM -
Cationic* Acidic HCl - ST-AK - ST-AK-L
HNO3 - ST-AK-N - -
CH3COOH ST-AK-XS ST-AK-A - -
  • *Commonly used silica sol is a negatively charged anionic material, but this type has been made cationic through surface treatment with an aluminum compound.

Uniquely Shaped Particles

    Elongated String-of-pearls
Secondary particle size (nm)
pH Dispersion stabilizer 40-100 80-120 100-150
Alkaline NaOH ST-UP ST-PS-S ST-PS-M
Acidic   ST-OUP ST-PS-SO ST-PS-MO

Type pH Grade
Amine-stabilized type Alkaline QAS-25
Lithium silicate LSS-35
Potassium silicate ST-K2

Example of typical grade properties

  Alkaline Acidic Enhanced stability Cationic
Grade ST-30 ST-N ST-O ST-C ST-AK
SiO2 (wt%) 30 20 20 20 18
Na2O (wt%) 0.3 0.03 0.03 0.05 0.03
pH 10 9.5 3 9 5
Viscosity (mPa・s) 4 4 2 6 4
Specific gravity 1.21 1.13 1.13 1.13 1.14
  Potassium silicate Lithium silicate Amine-stabilized type
Grade ST-K2 LSS-35 QAS-25
SiO2 (wt%) 20 20 25
Stabilizer (wt%) 8.0 as K2O 3.0 as Li2O -
pH 12 11 12
Viscosity (mPa・s) 13 8 3
Specific gravity 1.24 1.20 1.20
  • The figures indicated above are general properties.

Contact Us

  • Performance Materials Division Inorganic Materials Department
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