185 white Powder Precipitated Silica in Rubber

Precipitated silica, also called ‘white carbon black, is an amorphous form of silica (silicon dioxide, SiO2); it is a white, powdery material. Precipitated silica is produced by precipitation from a solution containing silicate salts.

Item NO.:
185P
EINECS No:
238-878-4
CAS No.:
10279-57-9
Chemical Formula:
SiO2
Surface BET (m²/g):
165-195
Properties:
White powder form, precipitated silica is made of sodium silicate with sulfuric acide through hydrolysis. It can be dissolved by NaOH,HF. Other kinds of acid, water and solvents can not dissolve the product.

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Product Detail
Packaging and Transportation

185P Powder Precipitated Silica for Rubber

Product Name

SiO2, Precipitated Silica, White Carbon black, Silicon Dioxide, Conventional Silica Powder

Chemical Properties

White powder or granular form, precipitated silica is made of sodium silicate with sulfuric acide through hydrolysis.

It can be dissolved by NaOH,HF. Other kinds of acid, water and solvents cannot dissolve the product.

Specifications

Items	Specification
Appearance	White Powder
Loss at 105 °C 2h %	4.0-8.0
Igniting Loss 1000 °C 2h % Max.	7.0
DBP absorption Value cm3 /g	2.00-2.80
45Mesh sieve residue % Min	0.5
pH Value (5% aqueous suspension)	6.0-8.0
SiO2 % Min	97
BET specific surface area m2/g	165-195

Application

1. 185P Precipitated Silica is a versatile inorganic chemical which are used for reinforcement of Shoemaking, Rubber Roller and Tyre industries. With high BET specific surface area, it displays high reinforcement when being used in rubber products, improve the hardness, abrasive resistance and tearing strength, which can extend its life.

2. In order to achieve optimum rubber-technical data the addition of activators like glycols, amines or other alkaline accelerators is necessary.

185P Powder Precipitated Silica for Rubber

1. Package: 20 kg/bag,380 kg/Jumbo Bag.

2. Storage: Kept in a low temperature, dry and ventilated place, avoid direct sunlight.

3. Shelf life: One year in ventilating, cool and dry area.

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