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HomeProduct name listBarium chromate

Barium chromate

Synonym(s):Barium chromate (BaCrO4);Barium chromate(VI);Barium chromium oxide (BaCrO4 );Barium yellow;Baryta yellow

  • CAS NO.:10294-40-3
  • Empirical Formula: BaCrO4
  • Molecular Weight: 253.3207
  • MDL number: MFCD00014180
  • EINECS: 233-660-5
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-31 13:32:20
Barium chromate Structural

What is Barium chromate?

Chemical properties

Barium chromate is a heavy, yellow powder(s); rhomb, monoclinic; prepared from BaCl2 and Na2CrO4 solutions, followed by filtering resulting precipitate; used in safety matches, as a corrosion inhibitor.[MER06] [HAW93]

Physical properties

Yellow orthorhombic crystal; density 4.50 g/cm3; darkens on heating; insoluble in water and organic solvents; dissolves in mineral acid with decomposition.

The Uses of Barium chromate

Barium chromate has been found to be useful in many capacities. It is an oxidizing agent, making it useful as a burn rate modifier in pyrotechnic compositions. It is especially useful in delay compositions such as delay fuses. Barium chromate is used as a pigment, oxidizing agent, colorant in glass, and sulfate scavenger in chromium electroplating baths, ceramics, and porcelain. It acts as a corrosion inhibitor in jointing pastes and metal primers. Further, it is used in fuses, safety matches, ignition control devices and high-temperature batteries. In addition to this, it is used as a carrier for the chromium ions and useful as a burn rate modifier in pyrotechnic compositions. It is involved as a catalyst in the alkane dehydration reaction.

What are the applications of Application

Barium chromate is an oxidizing chemical compound composed of the elements barium and chromium. It is a pigment almost entirely in anticorrosion jointing pastes to prevent electro-chemical corrosion at junctions of dissimilar metals; some use in artists' colors and in coloring glass, ceramics, porcelain. Also used in metal primers, pyrotechnic compositions.

Preparation

Interaction of barium chloride and sodium chromate. The precipitate is washed, filtered and dried.
BaCl2+Na2CrO4→BaCrO4↓+2NaCl

Hazard

Confirmed carcinogen.

Safety Profile

Confirmed human carcinogen. A poison. Mutation data reported. Reacts vigorously with reducing materials. See also BARIUM COMPOUNDS (soluble) and CHROMIUM COMPOUNDS. Used in pyrotechnics and as an explosive initiator.

Properties of Barium chromate

Melting point: 210 °C (dec.) (lit.)
Density  4.5 g/mL at 25 °C (lit.)
solubility  reacts with acid solutions
form  Powder
color  Yellow
Specific Gravity 4.5
Water Solubility  Insoluble in water. Soluble in strong acids.
Merck  14,972
Solubility Product Constant (Ksp) pKsp: 9.93
Exposure limits OSHA: Ceiling 0.1 mg/m3
NIOSH: IDLH 15 mg/m3; TWA 0.0002 mg/m3
Stability: Stable. Oxidizer. May react vigorously with reducing agents.
CAS DataBase Reference 10294-40-3(CAS DataBase Reference)
NIST Chemistry Reference barium chromate(VI)(10294-40-3)
EPA Substance Registry System Barium chromate (10294-40-3)

Safety information for Barium chromate

Signal word Danger
Pictogram(s)
ghs
Flame Over Circle
Oxidizers
GHS03
ghs
Exclamation Mark
Irritant
GHS07
ghs
Health Hazard
GHS08
GHS Hazard Statements H272:Oxidising liquids;Oxidising solids
H350:Carcinogenicity
Precautionary Statement Codes P201:Obtain special instructions before use.
P202:Do not handle until all safety precautions have been read and understood.
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P308+P313:IF exposed or concerned: Get medical advice/attention.

Computed Descriptors for Barium chromate

InChIKey QFFVPLLCYGOFPU-UHFFFAOYSA-N

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