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AMMONIUM CHROMATE

AMMONIUM CHROMATE Structure
AMMONIUM CHROMATE
  • CAS No.7788-98-9
  • Chemical Name:AMMONIUM CHROMATE
  • CBNumber:CB7123636
  • Molecular Formula:CrH8N2O4
  • Formula Weight:152.07
  • MOL File:7788-98-9.mol
AMMONIUM CHROMATE Property
  • Melting point: :180°C (dec.)
  • Density  :1.91 g/mL at 25 °C(lit.)
  • solubility  :H2O: 1 M at 20 °C, clear, yellow
  • form  :Crystalline
  • color  :Yellow-orange
  • Specific Gravity :1.91
  • Water Solubility  :Soluble in water. Slightly soluble in liquid ammonia, acetone, methanol. Insoluble in ethanol.
  • Merck  :14,510
  • CAS DataBase Reference :7788-98-9(CAS DataBase Reference)
  • FDA UNII :X7I33TTT6D
  • EPA Substance Registry System :Ammonium chromate (7788-98-9)
Safety
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordDanger
  • Hazard statements H350-H400-H272-H314-H317-H334-H350i-H410
  • Precautionary statements P201-P220-P261-P273-P280-P305+P351+P338-P308+P313-P405-P501a
AMMONIUM CHROMATE Price More Price(1)
  • Brand: Sigma-Aldrich
  • Product number: 216038
  • Product name : Ammonium chromate
  • Purity: 98%
  • Packaging: 500g
  • Price: $190
  • Updated: 2019/12/02
  • Buy: Buy

AMMONIUM CHROMATE Chemical Properties,Usage,Production

  • Chemical Properties Ammonium chromate is a yellow crystalline compound which can be used in solution, which is yellow with an ammonia odor.
  • Uses Sensitizing gelatin in photography, in textile printing pastes, in fixing chromate dyes on wool, and as a reagent in analytical chemistry.
  • Hazard Toxic by inhalation, strong irritant. Con- firmed carcinogen.
  • Safety Profile A poison. Mutation data reported. See also CHROMIUM COMPOUNDS. A powerful oxidizer. An explosion hazard when shocked or heated. When heated to decomposition it emits toxic fumes of NH3, Cr03, and NOx. Incompatible with reducing agents.
  • Potential Exposure It is used to inhibit corrosion and in dyeing, photography and many chemical reactions. Used as a fungicide and fire retardant.
  • Shipping UN3288 Toxic solids, inorganic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.
  • Purification Methods Crystallise it from weak aqueous ammonia (ca 2.5mL/g) by cooling from room temperature. It loses NH3 on heating to form ammonium dichromate. POISONOUS.
  • Incompatibilities A strong oxidizer and an explosive. Contact with combustible, organic and other readily oxidizable substances may cause fire and explosions. Hydrazine, other reducing agents. Corrosive to metals.
  • Waste Disposal Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal. Addition of a large volume of a reducing agent solution (hypo, bisulfite or ferrous salt, and acidify with 3 M sulfuric acid). When reduction is complete, flush to drain with large volumes of water.
AMMONIUM CHROMATE Preparation Products And Raw materials
Raw materials
Preparation Products
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