SODIUM METASILICATE (Pentahydrate)

PRODUCT TYPE:

Basic Raw Material Series

CAS NUMBER:

10213-79-3

IMO CLASSIFICATION:

UN NO.: 3253 CLASS: 8 P.G.: III

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Molecular Formula: Na2SiO3*5H2O

Molecular Weight: 212.14

HS CODE: 28391100

CAS NO.: 10213-79-3

UN NO.: 3253 CLASS: 8 P.G.: III


Specifications

Standard

Sodium oxide (Na2O)%

28.7-30.0

Silica (SiO2)%

27.8-29.2

Water insoluble%

≤0.05%

Fe(ppm)

≤100ppm

Whiteness%

≥80

Bulk Density

0.80-0.97g/cc

PH of 1.0% Solution

12-13

Melting Point

72.2

Particular Size % (16-60mesh)

≥90


Properties:
Sodium metasilicate pentahydrate is an inorganic white powder or crystalline granules, non-toxic, tasteless and environment-safe. It is easy soluble in water, insoluble in alcohol or in acid producing an alkaline solution, very hygroscopic when reacting with CO2 and water from the air. It has the capabilities of removing scale, emulsifying, dispersing, wetting, penetrating, and also has the capability of buffering PH value. 


In wash industry:
1. It has the strong capability of cleaning, widely used for the manufacture of a variety of detergents in detergent industry, so it is the best substitute for STPP, reducing environmental pollution.
2. Sodium metasilicate provides anti-corrosion protection to metals (zinc, aluminium, etc.) and is used as metal cleaner and metal surface treatment agents. 

In the textile industry: 
mainly used as printing and dyeing auxiliaries, fabric pre-treatment agent and as detergents in cooking and dyeing cotton yarn.

In the ceramic industry: 
used for sludge thinners. It is especially suitable for additives used in slip-casting forming and ceramic forming.
Packing
The inner bag is sealed PE plastic bag while the outer bag is tidely sutured plastic woven or kraft bag.


Net weight: 25kg or Packed in accordance with the requirements.
Delivery 
Conveyance must be dry and clean. Handle with care and avoid breaking the bags by edged tools. Protect from rain-drenched and moisture.
Storage
Should be stored above the floor more than 500px and kept a space of more than 20 cm between the piles and the wall. Protect from sun-scorched and rain-drenched. Send out the product in the sequence of stored-up date.


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