AMMONIUM CHROMATE
AMMONIUM CHROMATE Basic information
- Product Name:
- AMMONIUM CHROMATE
- Synonyms:
-
- ammoniumchromate(vi)
- chromicacid(h2cro4),diammoniumsalt
- chromicacid[h2cro4],diammoniumsalt
- diammoniumchromate
- neutralammoniumchromate
- AMMONIUM CHROMATE
- Ammonium chronate
- AmmoniumDichromate,>99%
- CAS:
- 7788-98-9
- MF:
- CrH8N2O4
- MW:
- 152.07
- EINECS:
- 232-138-4
- Product Categories:
-
- Ammonium Salts
- Metal and Ceramic Science
- Inorganic Chemicals
- Salts
- Mol File:
- 7788-98-9.mol
AMMONIUM CHROMATE Chemical Properties
- 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
- Specific Gravity
- 1.91
- color
- Yellow-orange
- Water Solubility
- Soluble in water. Slightly soluble in liquid ammonia, acetone, methanol. Insoluble in ethanol.
- Merck
- 14,510
- Exposure limits
- ACGIH: TWA 0.0002 mg/m3; STEL 0.0005 mg/m3 (Skin)
OSHA: Ceiling 0.1 mg/m3
NIOSH: IDLH 15 mg/m3; TWA 0.0002 mg/m3 - CAS DataBase Reference
- 7788-98-9(CAS DataBase Reference)
- EPA Substance Registry System
- Ammonium chromate (7788-98-9)
Safety Information
- Hazard Codes
- O,T,N
- Risk Statements
- 49-8-43-50/53-34
- Safety Statements
- 53-17-45-60-61-36/37/39-26
- RIDADR
- UN 1479 5.1/PG 2
- WGK Germany
- 3
- RTECS
- GB2880000
- TSCA
- Yes
- HazardClass
- 5.1
- PackingGroup
- III
- Hazardous Substances Data
- 7788-98-9(Hazardous Substances Data)
MSDS
- Language:English Provider:SigmaAldrich
- Language:English Provider:ALFA
AMMONIUM CHROMATE Usage And Synthesis
Chemical Properties
Ammonium chromate is a yellow crystalline compound which can be used in solution, which is yellow with an ammonia odor.
Uses
Ammonium chromate, is used in photography as a sensitizer for gelatin coatings. It's often used in photography, textile printing, and fixing chromate dyes on wool. It is also used as an analytical reagent, catalyst.
Uses
Reagent for the preparation of a solid heterogeneous oxidizing agent for liquid phase oxidation of alcohols.
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
Preparation Products
Raw materials
AMMONIUM CHROMATESupplier
- Tel
- 021-61259108 18621169109
- market03@meryer.com
- Tel
- 400-6106006
- saleschina@alfa-asia.com
- Tel
- 021-021-58432009 400-005-6266
- sales8178@energy-chemical.com
- Tel
- 86-21-63210123
- sj_scrc@sinopharm.com
- Tel
- 021-021-021-67601398-809-809-809 15221380277
- marketing_china@spectrumchemical.com
AMMONIUM CHROMATE(7788-98-9)Related Product Information
- Sodium tungstate
- AMMONIUM TUNGSTATE 99.99%
- SILVER CHLORATE
- Reinecke salt
- Chromic acid
- Ammonium dichromate
- ANILINE BLACK
- Bis(tetrabutylammonium) dichromate
- Pyridinium dichromate
- AMMONIUM CHROMATE
- IMIDAZOLIUM DICHROMATE
- QUINOLINIUM DICHROMATE
- 4-CARBOXYPYRIDINIUM DICHROMATE
- Tri-butyl chromate
- Nickel ammonium chromate hexahydrate
- COPPER (II) AMMONIUM CHROMATE,CUPRIC AMMONIUM CHROMATE
- TETRAKIS(PYRIDINE)SILVER(I) DICHROMATE
- Kromad