Group DB

Precipitated Silica

Preface:

Precipitated silica, a form of synthetic amorphous silicon dioxide, is derived from quartz sand, a crystalline form of silicon dioxide. The physical properties of precipitated silica can be manipulated during the manufacturing process to deliver products with a wide range of performance-enhancing features engineered for many different end-use applications.

DB Group offers the product in Pesticides, Weedicides, Adhesives, Emulsion, Footwear, Toothpaste, Pan Masala, Free Flowing Salt, Cosmetics, Tyre, Sponge, MC sheets, Industrial & Silicone Rubber, Tubes & Pharmaceutical Industry.

Description of Test	Specifications/ Limits
Characteristics	White Free Flowing Powder (DB07)
Ph (5% w/v) Aq. Sus.	6 to 7
Moisture Content	5% Maximum
Heavy Metal	NMT 200 ppm
Silica Content	98.5 Minimum
Loss on Drying (@110 C)	4.5 Maximum
Loss on Ignition	10% Maximum
Particle Size Passing	200# (74 Microns)
Bulk Density before Tapping	0.08 Maximum
Bulk Density after Tapping	0.11 Maximum
Water Absorption ml/gm	180 ml/ 100 gm Minimum

Description of Test	Specifications/ Limits
Characteristics	White Free Flowing Powder (DB07-R)
Ph (5% w/v) Aq. Sus.	6 to 7
Moisture Content	5% Maximum
Heavy Metal	NMT 200 ppm
Silica Content	98.0 Minimum
Loss on Drying (@110 C)	5.5 Maximum
Loss on Ignition	10% Maximum
Particle Size Passing	0.5 Maximum
Bulk Density before Tapping	0.166 Maximum
Bulk Density after Tapping	0.227 Maximum
Water Absorption ml/gm	180 ml/ 100 gm Minimum
Al2O3	0.20 Maximum
Surface Area	175 ± 10 mg2/g