Ferric chloride 14 (inorganic compound)

Ferric chloride,with the chemical formula FeCl3,appears as black brown crystals(also in thin flakes).It is easily deliquescent in humid air and hydrolyzed in solutions with low acidity,producing iron hydroxide colloids.It is soluble in water,methanol,ethanol,acetone,and ether,but insoluble in glycerol(glycerol).When dissolved in water,it releases a large amount of heat,forming a brown or brownish yellow acidic solution.It can precipitate hexahydrate ferric chloride(FeCl3×6H2O)with crystal water from the solution.
Ferric chloride is an important iron salt widely used in fields such as metal etching,wastewater treatment,coagulants,catalysts,oxidants,mordants,and pharmaceuticals.
At present,the industrial production of ferric chloride includes high-temperature chlorination(pyrometallurgical),hydrochloric acid method,one-step oxidation method,and continuous reaction method;Purification and impurity removal methods include recrystallization,reduction using elemental iron,pH adjustment precipitation,sulfide precipitation,and extraction.
Chinese name:Ferric chloride
Foreign name:ferro chlorocitric acid
Alias:Anhydrous ferric chloride,ferric chloride
Chemical formula:FeCl3
Molecular weight:162.204
CAS login number:7705-08-0
EINECS login number:231-729-4
Melting point:304℃
Boiling point:316℃
Water solubility:easily soluble in water
Density:2.8 g/cm3
Appearance:Black crystalline powder
Flash point:316℃
Applications:Metal etching,wastewater treatment,coagulants,catalysts,oxidants,mordants,pharmaceuticals
Security Description:S26,S39
Hazard symbol:Xn
Hazard description:R22;R38；R41
UN Dangerous Goods Number:1773
CN Dangerous Goods Number:81513
RTECS Number:LJ9100000