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Color-Variable Silica Gel

Product:    Color-Variable Silica Gel

CAS NO:   112926-00-8

Molecular formula:   SiO2

Properties:

Spherical or irregularly-shaped grains, the get is currently presented either purple, orange or yellow. With silicon dioxide as the chief ingredient, the product performs all the functions of blue silica gel but does not contain cobalt chloride and is therefore innocuous and pollution-free, and its color varies as humidity changes.

Application: 

Mainly for drying and indicating humidity of precision instruments, medicine, petrol chemicals, foodstuff, clothing, leather, electric applicances, other industrial gases, etc.

How to use:

Put proper amounts in a suitable container or package and set the container or package where drying or humidity indication is needed. This gel can be used independently or in combination with other types of silica gel. After changing color as a result of absorbing dampness, the gel can be reused after heating to change back to its pre-use color. Heating is most suitable between 100-120 ºC.

Specification: 

Items

WG-1

WG-II

Adsorption capacity, 25 ºC (%)

RH=20%

9.0 min.

9.0 min.

RH=50%

22.0 min.

22.0 min.

Color Variation RH=50%

Light orange

Light blackish-green

Loss on Heating (%)

3.0 max.

3.0 max.

 Granularity Eligibility (%)

90 min.

90 min.

Size (mm)

Negotiable

Negotiable

Original Color

Purple

Orange

 

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