CATOSIL PRECIPITATED SILICA
CATOSIL precipitated Silicas are available in various combinations of physical properties such primary and secondary particle size, surface area, bulk density, absorption capacity etc. It is available in three physical form Categories:-
a. Powder Products
b. Spray Dried Granules
c. Compacted Pellets
 

PHYSIOCHEMICAL PROPERTIES OF PRECIPITATED SILICA
(POWDER PRODUCTS)

Property

Unit

CATOSIL NK-3 HS

Appearance

-

Snow White free flowing powder

Behaviour towards water

-

Hydrophilic

Moisture (105°C)
%
5±1.5
Ignition loss (900° C for 2 hrs)

% max

6
Surface Area (BET)

m 2 /gm

150±10
Average Particle size (d50)

nm

3-5
Water Absorption

%

240-270
Oil absorption

%

235-265
Bulk Density*

gm/cc

0.06-0.08
pH (5% acq. Solution)

 -

6.8±0.5
Residue on 300 mesh

% max

0.1 
Specific Gravity

-

2±0.02
Refractive Index

-

1.46
SiO 2
%
98-99
Al 2O3

%max

0.2
R2O3

%max

0.3
Fe as Fe2O3

%max

0.03
Storage Stability

PRACTICALLY UNLIMITED UNDER FAVOURABLE TRANSPORT/STORAGE CONDITIONS

Packing

Kgs/bag

25

 

PHYSIOCHEMICAL PROPERTIES OF PRECIPITATED SILICA
(SPRAY DRIED GRANULES)

Property

Unit

CATOSIL NK-3
(Spray Dried)  
Appearance

-

Snow White free flowing powder

Behaviour towards water

-

Hydrophilic

Moisture (105°C)  
%

5±1.5

Ignition loss (900° C for 2 hrs)

% max

170±15
Surface Area (BET)

m 2 /gm

290-320

Average Particle size Primary
Secondary

nm

15

µm
5
Water Absorption

%

240-260

Oil Absorption

%

235-255

Bulk Density*

gm/cc

0.22-0.28
pH (5% acq. Solution)

 -

6.2-7.0

Specific Gravity

-

2±0.2

Refractive Index

-

1.46

SiO2
%
98-99
Al2O3

%

0.2

R2O3

%

0.2

Fe as Fe2O3

%

0.03

Arsenic (As)
ppm max
5
Lead (Pb)

ppm max

5

Storage Stability

PRACTICALLY UNLIMITED UNDER FAVOURABLE TRANSPORT/STORAGE CONDITIONS

Packing

Kgs/bag

25
 

PHYSIOCHEMICAL PROPERTIES OF PRECIPITATED SILICA
(PELLETIZED PRODUCTS)

Property

Unit

CATSIL NK-3
(Spray Dried)  
Appearance

-

Snow White free flowing powder

Behaviour towards water

-

Hydrophilic

Moisture (105°C)  
%

5±1.5

Ignition loss (900° C for 2 hrs)

% max

170±15
Surface Area (BET)

m 2 /gm

290-320

Average Particle size Primary
Secondary

nm

15

µm
5
Water Absoption

%

240-260

Oil absorption

%

235-255

Bulk Density*

gm/cc

0.30-0.35
pH (5% acq. Solution)

 -

6.2-7.0

Specific Gravity

-

2±0.2

Refractive Index

-

1.46

SiO2
%
98-99
Al2O3

%

0.2

R2O3

%

0.2

Fe as Fe2O3

%

0.03

Arsenic (As)
ppm max
5
Lead (Pb)

ppm max

5

Storage Stability

PRACTICALLY UNLIMITED UNDER FAVOURABLE TRANSPORT/STORAGE CONDITIONS

Packing

Kgs/bag

25
*At the time of packing.                                                 Take a printout of technical specifation

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