140 Powder Precipitated Silica in Rubber

140 Powder White Powder form, it can be dissolved by NaOH, HF. Other kinds of acid, water and solvents cannot dissolve the product. Resistance to high temperature, no combustion, good insulation, odourless properties

 

  • Item NO.:

    140P
  • EINECS No:

    238-878-4
  • CAS No.:

    10279-57-9
  • Chemical Formula:

    SiO2
  • Surface BET (m²/g):

    125-155
  • 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 cannot dissolve the product.

140 Powder Precipitated Silica for Rubber

Medium Size surface Area Silica 140

 

Product Name

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

 

Chemical Properties

White powder, precipitated silcia is made of sodium silicate with sulfuric acid through hydrolysis.

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

 

Specifications

Items

Units

Specification

Appearance

----

White Powder

Loss at 105oC 2h 

%

4.0-8.0

Igniting Loss 1000oC 2h 

%

7.0Max

DBP absorption Value 

cm3/g

2.00-2.80

45Mesh sieve residue 

%

0.5 Min

pH Value (5% aqueous suspension)

-----

6.0-8.0

SiO2 % Min

%

97Min

BET specific surface area

m2/g 125-155

 

Application

1. 140P Silicon Dioxide is a versatile inorganic chemical which are used for reinforcement of rubber seals, battery separators, rubber sacs, belts and tyres industries etc.

2. 140P White Carbon black possesses a high reinforcing potential and imparts rubber compounds as the lower specific surface. It can improve high Shore hardness, tensile strength, tear resistance and abrasion resistance, less deformation under compression, and extended products life.

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

140 Powder Precipitated Silica for Rubber

 

1.  Package: 220kg/PE bag, 15kg/paper bag, 360kg/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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