Sodium Metasilicate also named as Sodium Silicate; water glass; Sodium siliconate; Sodium polysilicate; Sodium
sesquisilicate
It is the best substitute for Sodium tripolyphosphate,
effectively reduce environment pollutions caused by sodium tripolyphosphate and save your production cost
Sodium Metasilicate Pentahydrate (powder)
English name:Sodium metasilicate Pentahydrate Powder
Formula:Na2SiO3·5H2O
Molecular weight :212.14
CAS NO.6834-92-0
Physicochemical characteristics:White powder; Relative density: 0.8-1.0; Melting point: 70-73℃; soluble in water or in thin alkali, insoluble in alcohol or in acid. The solution is alkaline, which presents detergency, emulsibility, dispersity, wettability, permeability and the buffer ability to the PH value, very hygroscopic and deliquescet when exposed to the air. Strong solution has a corroding effect on textile and skin.
Main usage:Detergent auxiliary, Metal surface treatment chemicals, Grinding aids for ceramic, Raw material for fire-proof auxiliary, plastic maintenance agent, degreasing and textile printing and dyeing functional auxiliaries, water retention auxiliary, deinking auxiliary, peroxidase bleach stabilizer.
Product packing specification:Inner bag: PE plastic bag Outer bag: woven bag Net weight:25kg.
Storage and Delivery:Please store in a cool, dry and ventilated place. Keep products from being wet and avoid too much sun exposure during transportation.Temperature of products’ surroundings should be below 60℃.
The quality standards of Sodium Metasilicate Pentahydrate (powdered form)(HG/T2568-2008)
Items
National First Rate
Product testing results
Sodium oxide (Na2O)%
28.7-30.0
28.9
Silicon oxide (SiO2)%
27.8-29.2
28.2
Water insoluble matter %
≤0.05
0.01
Iron levels (Fe)%
≤0.01
0.005
White degrees
≥80
94
Application
It is the best substitute for Sodium tripolyphosphate
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, aluminum,ets) 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 an as detergents in cooking and dyeing cotton yarn.
In the paper & printing industry:
It can be used as adhesives, old paper deinking agent, paper surface treatment agent and printing detergent.
In the ceramic industry:
Used for sludge thinners,it is especially suitable for additives used in slip-casting forming and ceramic forming.
In the metallurgical industry:
Used as inhibitors and dispersing agent of silicon-containing minerals, smelting furnace dispersants, fast-drying agents, foundry and separating agents.
In the construction field:
Used for concrete dispersion agent and hardening accelerator, it is also used as coagulation accelerator.
