High Quality Silicic acid (H2SiO3),disodium salt, pentahydrate (8CI,9CI) CAS NO.10213-79-3

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Sodium Metasilicate Pentahydrate CAS No.:10213-79-3  MF: Na2SiO3.5H2O

HS CODE:2839110000

Sodium Metasilicate Pentahydrate CAS No.:10213-79-3  UN NO: 3253

 

Purity: SiO2 27%~29%

Appearance: White crystal or powder

Application: detergent, ceramic, textile industry, Paper & Printing, construction, metallurgical 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 meta silicate provides anti-corrosion protection to metals (zinc, aluminum, etc.) and is used as metal cleaner and metal surface treatment agents.

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

4. In the Paper & Printing Industry: It can be used as adhesives, old paper deinking agent, paper surface treatment agent and printing detergent.

5. In the ceramic industry: used for sludge thinners. It is especially suitable for additives used in slip-casting forming and ceramic forming.

6. In the metallurgical industry: used as inhibitors and dispersing agent of silicon-containing minerals, smelting furnace dispersants, fast-drying agents, and foundry and separating agents.

7. In the construction field: used for concrete dispersion agent and hardening accelerator. It is also used as coagulation accelerator.

 

Item	Sodium Metasilicate Anhydrous	Sodium Metasilicate Pentahydrate	Sodium Metasilicate Nonahydrate
MF	Na2SiO3	Na2SiO3.5H2O	Na2SiO3.9H2O
MW	123.07	212.14	284.2
Melting Point	1088°C	72°C	41.6°C
CAS No.	6834-92-0	10213-79-3	13517-24-3
Density	2.4g/cm3	1.75g/cm3	1.65g/cm3

 

Specification for Sodium Metasilicate Anhydrous

ITEM	INDEX	TEST RESULT
Sodium oxide(Na2O)%	49.5.50—51.50	51.44
Silica(SiO2)%	45.00—47.00	46.43
Bulk Density(g/cm3)	1.05~1.35	1.23
Iron(Fe)%	≤200ppm	77
Whiteness	≥85	90.04
Particle Size(20-65mesh)%	≥93.00	99.66

 

Specification for Sodium Metasilicate Pentahydrate (granular)

ITEM	NATIONAL QUALITY INDEX	TEST RESULT
Sodium oxide(Na2O)%	28.00—30.00	29.10
Silica(SiO2)%	27.00—29.00	28.87
Water insoluble%	≤0.2	0.055
Iron(Fe)%	≤0.03	0.005
Whiteness	≥75	86
Particular size (16-30mesh)%	≥90	98
PH(1%SOLUTION)	12.5±1.0%	12.6

 

Specification for Sodium Metasilicate Pentahydrate (powder)

ITEM	INDEX	TEST RESULT
Sodium oxide(Na2O)%	28.50—30.00	29.06
Silica(SiO2)%	27.30—29.20	28.75
Water insoluble%	≤0.2	0.08
Iron(Fe)%	≤0.03	0.005
Whiteness	≥75	89
PH(1%SOLUTION)	12.5±1.0%	12.4

 

Specification for Sodium Metasilicate Nonahydrate

ITEM	INDEX	TESTING RESULT
Sodium oxide(Na2O)%	20.00-23.50	21.80
Silica(SiO2)%	19.00-23.00	21.65
Water insoluble%	≤0.3	0.06
Iron(Fe)%	≤0.05	0.006
Whiteness	≥70	80

 

Sodium Metasilicate Pentahydrate CAS No.:10213-79-3  Storage:

Should be stored above the floor more than 20cm 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 

d sulfuric acid
.