Active Zinc Oxide
Aluminium Silicate
Aluminium Stearate
Aluminium Stearate Gel
Ammonium Chloride
Barytes-Micronised
Calcite-Micronised
Calcium Carbonate
Calcium Chloride
Calcium Chloride Powder
Calcium Chloride White Powder
Calcium Hydroxide
Calcium Hydroxide Powder
Calcium Stearate
Calcium Stearate Plastic
Calcium Sulphate
China Clay
Ferric Chloride
Glue Powder
Hydrated Lime
Hydrated Calcium Silicate
Kaolin
Magnesium Carbonate
Magnasium Chloride Flakes
Magnasium Chloride Anhydrous
Magnasiun Stearate
Magnasium Sulphate
Other Products
Pigments
Precipitated Silica
Sodium Bi - Sulphite
Sodium Meta - Bi - Sulphite
Sodium Sulphite
Stearic Acid
Stearic Acid Chemical
Stearic Acid Cosmetics
Stearic Acid Powder
Talc Powder
Vinly Resin
Zinc Carbonate
Zinc Chloride
Zinc Chloride Anhydrous
Zinc Chloride Powder
Zinc Chloride Solide
Zinc Chloride Imported
Zinc Dust
Zinc Oxide
Zinc Stearate
Zinc Stearate Plastic
 
PRECIPITATED SILICA
We are specialized in offering a complete range of precipitated silica, that is sourced from some of highly trusted vendors of the industry. It is widely used in the applications of various industries such as rubber, dye & pigments, cosmetic and others. Further, our range is tested on various parameters to ensure purity, freshness and accurate composition.
 
 
SPECIFICATION NK -70
TECHNICALSPECIFICATION OF PRECIPITATED SILICA (NK – 3 SD Grade)  
PROPERTY
Specification
Test Value
Moisture (%)
5.0 + - 1.5
5.2
Bulk Density (gm/cc)
0.22 – 0.28
0.23
pH Value
6.5 -7.0
6.84
Water Absorption (%)
240 -270
248
Loss on Ignition (%)
6.0 Max
5.74
Surface Area (sqm / gm)
185 + - 15
190
Colour
As Per Std
Conforms to STD
 
TYPICAL PHYSIOCHEMICAL PROPERTIES OF
PRECIPITATED SILICA (POWDER PRODUCTS)
   
GRADES

PROPERTY

UNIT

UNISIL NK-70

UNISIL NK-1

UNISIL NK-2

UNISIL NK-3

UNISIL NK-19

UNISIL NK-4

UNISIL NK-7 

Appearance

-

Snow White free flowing powder

Behaviour towards water

-

Hydrophilic

Moisture (105°C)

 %

5±1.5

5±1.5

5±1.5

 5±1.5

5±1.5

 5±1.5

5±1.5

Ignition loss (900° C for 2 hrs)

% max

6

6

6

6

6

6

6

Surface Area (BET)

m 2 /gm

100-115

130-150

140-170

 160-200

240-260

 115-125

290-320

Average Particle size

Primary

Secondary

nm

10-12

18-20

16-18

 12-14

8-10

 10-12

6-8

µm

14-16

8-10

10-12 

10-12

12-14

 8-10

8-10

Water Absorption

%

230-260

240-260

240-260

 240-260

300-350

 260-280

400-450

Oil absorption

%

225-255

235-255

235-255

 235-255

295-345

 255-275

395-495

Bulk Density*

gm/cc

0.12-0.16

0.09-0.12

0.11-0.16

0.12-0.18

0.10-0.14

0.08-0.10

0.08-0.12

pH (5% acq. Solution)

 -

6.2-7.0

6.2-7.2

6.2-7.5

 6.2-7.5

6.2-7.0

 6.5-7.0

6.2-7.2

Residue on 300 mesh

% max

1.0

0.5

1.0

 2.0

1.0

 0.5

0.5

Specific Gravity

-

2±0.2

2±0.2

2±0.2

 2±0.2

2±0.2

 2±0.2

2±0.2

Refractive Index

-

1.46

1.46

1.46

 1.46

1.46

 1.46

1.46

Al2 O3

%(max)

0.2

0.2

0.2

0.2

0.2

0.2

0.2

R2 O3

%(max)

0.3

0.3

0.3

0.3

0.3

0.3

0.3

Fe as Fe2 O3

%(max)

0.3

0.3

0.3

0.3

0.3

0.3

0.3

Storage Stability

PRACTICALLY UNLIMITED UNDER FAVOURABLE TRANSPORT/STORAGE CONDITIONS

Packing

Kgs/bag

25

25

25

 25

25

 25

25

               
 

TYPICAL PHYSIOCHEMICAL PROPERTIES OF PRECIPITATED SILICA

   
GRADE

PROPERTY

UNIT

UNISIL 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)

m2 /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

Al2 O3

%

0.2

R2 O3

%

0.2

Fe as Fe2 O3

%

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

   
     

TYPICAL PHYSIOCHEMICAL PROPERTIES OF PRECIPITATED SILICA

   
GRADE

PROPERTY

UNIT

UNISIL 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)

m2 /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

SiO2

%

98-99

Al2 O3

%max

 0.2

R2 O3

%max

 0.3

Fe as Fe2 O3

%max

 0.03

Storage Stability

PRACTICALLY UNLIMITED UNDER FAVOURABLE TRANSPORT/STORAGE CONDITIONS

Packing

Kgs/bag

25

 
TYPICAL PHYSIOCHEMICAL PROPERTIES OF PRECIPITATED SILICA
   
GRADE

PROPERTY

UNIT

UNISIL NK-3 (Special)

Appearance

-

Snow White free flowing powder

Behaviour towards water

-

Hydrophilic

Moisture (105°C)2

 %

5±1.5

Ignition loss (900° C for 2 hrs)3

% max .

6

Surface Area (BET)4

m2 /gm

160±20

Average Particle size

Primary9

nm

16-18

Secondary9
um
10-12

Water Absorption

%

 240-260

Oil absorption

%

 235-255

Bulk Density1,5

gm/cc

 0.11-0.16

pH (2% acq. Solution)6

 --

6.8±0.5

Residue on 300 mesh7
% max.
1.0

Specific Gravity

--

 2±0.02

Refractive Index

--

 1.46

SiO28

%

98-99

Al2 O38

%max

 0.2

R2 O38

%max

 0.3

Fe as Fe2 O38

%max

 0.03

Storage Stability

PRACTICALLY UNLIMITED UNDER FAVOURABLE TRANSPORT/STORAGE CONDITIONS

Packing

Kgs/bag

25

   
     
Unique feature of: UNISIL NK-4HS
Specially developed for pesticides / insecticides formulations which surpasses all currently available products in functional properties
 
GRADE

PROPERTY

NK-4HS

Best Values of Other Grades

Suspensibility

over 90%

85%

Bulk Density

Tapped

0.07 gm/cc

0.10 gm/cc

Untapped
0.05 gm/cc
0.08 gm/cc

Average Praticle Size

4 Microns

7 Microns

 
TYPICAL PHYSIOCHEMICAL PROPERTIERS
PROPERTY

UNIT

VALUE

pH
--
6.5-7.0
Moisture

%

1.5

L.O.I.

%

4.0±1.5

Residue on 300 mesh

%max

0.1

Water Absorption

%

240-270

Specific Gravity

--

2±0.02

   
 

 

 

TYPICAL PHYSIOCHEMICAL PROPERTIES OF PRECIPITATED SILICA
   
GRADE

PROPERTY

UNIT

UNISIL NK-4 C

Appearance

-

Snow White free flowing powder

Behaviour towards water

-

Hydrophilic

Moisture (105°C)2

 %

5±1.5

Ignition loss (900° C for 2 hrs)3

% max .

6

Surface Area (BET)4

m2 /gm

120-160

Average Particle size

Primary9

Nm

10-12

Secondary9
um
8-10

Water Absorption

%

 240-280

Oil absorption

%

 235-275

Bulk Density1,5

Gm/cc

 0.09-0.12

pH (2% acq. Solution)6

 --

6.5-7.0

Residue on 300 mesh7

%max

0.2

Specific Gravity

--

 2±0.02

Refractive Index

--

 1.46

SiO 28

%

98-99

Al2 O38

%max

 0.2

R2 O38

%max

 0.2

Fe2 O38

%max

 0.03

Storage Stability

PRACTICALLY UNLIMITED UNDER FAVOURABLE TRANSPORT/STORAGE CONDITIONS

Packing

Kgs/bag

25