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Barium Carbonate for Ceramics 99.2% min. CAS No 513-77-9

Basic Info

Product Name	Barium Carbonate	Type	Barium Salt	Purity	99.2% min
Other Names		Molecular Formula	BaCO3	HS code	28366000
Place of Origin	China Mainland	Molecular Weight	197.35	CAS No	513-77-9
Appearance	White powder	Grade Standard	Industrial Grade	EINECS No	208-167-3
Model Number	GC-BaCO3	Application	Glass, ceramic,etc.	Brand Name	GC

Property

1. Hexagonal micro crystal or white powder.

2. Insoluble in water, melting point 1740℃, resolve at 1450℃, giving out Carbonate dioxide.

3. Slight soluble in CO2–contained water, soluble in solution of Ammonium Chloride and Ammonium Nitrate, HCl.

4. Used in electronic, instrumentation, metallurgy industry. Besides these usages, it can be applied in fireworks, signal detonator, coating in ceramic, and as an accessory for optical glass, a rodenticide, water clarifying agent and filler.

Specification

Item	Standard
Appearance	Powder
BaCO3	99.2% min
SO4	0.35% max
Fe	0.004% max
HCl Insoluble	0.25% max
Moisture	0.3% max
Bulk Density	Heavy Type	around 1g/cm3
Light Type	0.6 - 0.9 g/cm3

Application

Mainly used in magnetic materials, glass, ceramics, purify water, paints, pigments, steel, carburizing, manufacturing other barium salts and reagents etc.

Role in Ceramics industry

Barium carbonate is widely used in the ceramics industry as an ingredient in glazes. It acts as a flux, a matting and crystallizing agent and combines with certain colouring oxides to produce unique colours not easily attainable by other means.

In the brick, tile earthenware and pottery industries barium carbonate is added to clays to precipitate soluble salts (calcium sulfate and magnesium sulfate) that cause efflorescence.

Role in Glass industry

As an ingredient, Barium carbonate is always used in the production of glass. It acts as a flux, a matting and crystallizing agent and combines with certain colouring oxides to produce unique colours not easily attainable by other means.

Barium Carbonate procedure for the preparation of glass capillary columns. It is a barium oxide carrier which optimizes the refractoriness and the workability of the glass.

Production

Barium carbonate is always produced in three ways commercially from barium sulfide.

1. Carbonizatin method

Blow carbon dioxide into the solution of barium sulfide for carbonization, then slurry of Barium Carbonate comes out. After desulfidating, washing, filtering under vacuum in the temperature of 300 ° C, dry barium carbonate slurry, comminute it, then barium carbonate is born.

BaS+CO2+H2O=BaCO3+H2S

2. Double decomposition method

After metathetical reaction between Barium sulfide and ammonium Carbonate, wash, filter, dry, then Barium Carbonate come out.

BaS+(NH4)2CO3=BaCO3+(NH4)2S

With Double decomposition method Barium Carbonate can also be made by reaction between Barium chloride and potassium Carbonate.

BaCl2+K2CO3=BaCO3+2KCl

3. Witherite method

The witherite ore react with ammonium salts to gain soluble Barium salt. Recycle ammonium carbonate by adding Barium salt into it, come out the purified precipitate Barium Carbonate, filtered, dried and finish. The mother liquor obtained can be recycled.

BaCO3+2HCl=BaCl2+H2O+CO2

BaCl2+2NH4OH=Ba(OH)2+2NH4Cl

Ba(OH)2+CO2=BaCO3+H2O

Package

In plastic lined plastic woven bags of 25kg bags or 1000kg bags net each.

Hazardous marks are printed on bags . UN NO. 2564 , Glass 6.1