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Colloidal Silica Supplier


Colloidal Silica

Product Details

Identification Should pass the test
pH (1 gm in 30 ml aqu. suspn.) 3.5 to 5.5
Assay, (SiO2 ; on Ignited basis) 99.0 to 100.5
Chloride 250 Max.
Heavy Metals as Pb 25.0 Max.
Loss on Drying (105°C, 2 hrs.) 1.5 Max.

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Technical Data

PARAMETERS UNIT SPECIFICATIONS TEST METHOD
Description - Light, Fine, amorphous, odorless powder. IMS-WI-QC-024
Solubility - Practically insoluble in water and mineral acids except in Hydrofluoric acid. Dissolves in alkali on heating.
Identification - Should pass the test
Loss on Ignition, (at 9000C for 2 hours) % 5.0 Max.
pH (1 gm in 30 ml aqu. suspn.) - 3.5 to 5.5
Assay, (SiO2 ; on Ignited basis) % 99.0 to 100.5
Chloride ppm 250 Max.
Heavy Metals as Pb ppm 25.0 Max.
Arsenic ppm 8.0 Max.
Loss on Drying (105°C, 2 hrs.) % 1.5 Max. IMS-WI-QC-003
Bulk Density, Tapped (while Material Packed) gm/Lit 40.0 to 80.0
Iron Content (Fe+3) ppm 200 Max.
Additional Parameters: IMS-WI-QC-003
Average Particle Size - D50 (By Malvern Instrument) Microns 5.0 Max.

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