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Barium carbonate

CAS Number
513-77-9
EC Number
208-167-3
Chemical Formula
CH2O3.Ba
Molecular Weight
197.34 g/mol

Description

Barium carbonate (CAS 513-77-9 ), also known as Witherite, is an inorganic barium salt used across ceramics, electronics, and specialty chemical manufacturing. It functions primarily as a barium source in high-temperature sintering processes. This versatile compound acts as a flux modifier, pH regulator, and catalyst precursor across multiple industrial sectors. In ceramic and tile manufacturing, it neutralizes soluble sulfates in clay bodies, preventing surface efflorescence in fired products. Electronics producers use it as a raw material for barium titanate synthesis, a key dielectric compound in capacitors and piezoelectric components. In glass and specialty optical formulations, it modifies refractive index and improves durability. Metallurgical applications include its use as a flux and surface hardening agent in steel case-hardening salt baths. Barium carbonate is supplied as a white powder in fine and coarse particle grades suited to different processing requirements. Technical grade is the standard commercial form, with purity levels typically ranging from 98% to 99.5% depending on the intended application. Bulk packaging in bags or big bags is standard for industrial distribution. Specifications are often aligned to ceramic or electronic-grade quality requirements set by individual industry standards. The material must be handled according to safety protocols due to its chemical properties and industrial utility. Contact us for supply of Barium carbonate Request Quote

Other Names (Synonyms)

Barium monocarbonate | Witherite | Carbonic acid, barium salt (1:1) | Barium carbonate (1:1) | Baryta Carbonica | Barium carbonate (BaCO3) | Caswell No. 069 | BW-C3

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point811 °C
Boiling Point1360 °C
Density4.43 g/cm³
AppearanceWhite Fine Powder
ColorWhite
OdorOdorless
FormPowder/Solid
Water Solubility0.002 g/100 mL (20 ºC)
pH7-8 (0.016g/l, H2O, 16℃)

Safety & Handling

Warning
GHS07· IrritantGHS06· ToxicGHS08· Health Hazard

Hazard Statements

H301Toxic if swallowed
H302Harmful if swallowed
H332Harmful if inhaled
H335May cause respiratory irritation
H361Suspected of damaging fertility or the unborn child
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P316Get emergency medical help immediately.
P233Store in a well-ventilated place. Keep container tightly closed.

Trade & Regulatory

HS Code28366000
UN Number1564
ADR Class6.1
Packing GroupIII