Ceramic Capacitor Product Barium Carbonate Powder 99% Purity EINECS 208 167 3

BaCO3 CAS NO 513-77-9 one the main uses of barium carbonate is produce ceramic capacitors

►Description

      Barium carbonate is a white fine powder.

     Barium carbonate (BaCO3), also known as witherite, is a chemical compound

used in rat poison, bricks, ceramic glazes and cement.

     Barium carbonate is insoluble in water and soluble in most acids, with the

exception of sulfuric acid. Barium carbonate has a specific gravity of 4.275. Barium

carbonate is toxic by ingestion.

The mineral is named after William Withering, who in 1784 recognized it to be

chemically distinct from barytes. It occurs in veins of lead ore at Hexham in

Northumberland, Alston in Cumbria, Anglezarke, near Chorley in Lancashire and a

few other localities. Witherite is readily altered to barium sulfate by the action of

water containing calcium sulfate in solution and crystals are therefore frequently

encrusted with barytes. It is the chief source of barium salts and is mined in

considerable amounts in Northumberland. It is used for the preparation of rat

poison, in the manufacture of glass and porcelain, and formerly for refining sugar.It

is also used for controlling the chromate to sulfate ratio in chromium electroplating

baths.

►Specification

► Production method 

(1) Carbonation method: carbon dioxide is passed through barium sulfide

solution  to carbonize, the obtained barium carbonate slurry is desulfurization

washed, vacuum filtration, dried at 300℃ and pulverized to obtain barium

carbonate products. its

BaS + CO2 + H2O→ BaCO3↓+ H2S↑

Metathesis method: barium sulfide and ammonium carbonate proceeds metathesis

reaction, and then washing, filtering and drying to obtain bismuth products. its
 

BaS + (NH4) 2CO3 → BaCO3 ↓ + (NH4) 2S
 

(2) Carbonization method.

Reaction equation:

BaS + CO2 → BaCO3 ↓ + H2S ↑

Metathesis method. Reaction equation:

BaCl2 + NH4HCO3 + NH4OH → BaCO3 ↓ + 2NH4Cl + H2O
 

Reaction equation:

BaCO3 + 2NH4Cl → BaCl2 + 2NH3 + H2O + CO2

BaCL2 + (NH4) 2CO3 → BaCO3 ↓ + 2NH4Cl

►Application 

      Barium carbonate is widely used in high-voltage AC capacitors, ultrasonic

transducer devices and piezoelectric ceramic capacitor manufacturing.
 

The piezoelectric effect was first discovered on quartz crystal by the Curie brothers

in 1880, the crystal which can produce the piezoelectric effect was called

piezoelectric crystal. 

►Toxicity

       This product is toxic virulent. Chronic poisoning mainly accumulates in the

bone, causing bone marrow leukosis. Severe acute poisoning can cause acute

gastrointestinal disorders, tendon reflexes, convulsions, muscle paralysis.

Emergency treatments include gastric lavage, enema, taking measures like

vomiting. Maximum allowable concentration is 0.5 mg/m3. Production should wear

overalls, masks, gloves.

►Packing 

25kg/bag