4'-HYDROXY-4-BIPHENYLCARBONITRILE

PRODUCT IDENTIFICATION

CAS NO. 19812-93-2

4'-HYDROXY-4-BIPHENYLCARBONITRILE

EINECS NO.  
FORMULA C13H9NO
MOL WT. 195.22
H.S. CODE  

TOXICITY

 
SYNONYMS 4-Cyano-4'-Hydroxy-biphenyl;

DERIVATION

 

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE yellowish crystalline powder
MELTING POINT 192 - 195 C
BOILING POINT  
SPECIFIC GRAVITY  
SOLUBILITY IN WATER slightly soluble
pH  
VAPOR DENSITY  
AUTOIGNITION

 

NFPA RATINGS  

REFRACTIVE INDEX

 
FLASH POINT

> 110 C

STABILITY

Stable under ordinary conditions.

GENERAL DESCRIPTION & APPLICATIONS

Biphenyl (also called Diphenyl, but exactly one of two compounds. The other is o-phenylphenol, used to prevent the growth of moulds ) is an aromatic hydrocarbon; molecule structure is composed of two six-sided carbon rings connected at one carbon site on each ring. Pure biphenyl is a toxic colourless crystalline solid with a pleasant odour; melting point 70 C, boiling point 255 C, which gives plates or monoclinic prismatic crystals; it is insoluble in water but soluble in ordinary organic solvents. It is directly used in the preservation of citrus fruits  as a fungistat in transportation containers. It is a raw material for polychlorinated diphenyls (PCB) in which chlorine replaces hydrogen in biphenyls. There are 209 chlorinated isomers of biphenyl theoretically. But PCBs are referred to the biphenyl compounds with one to ten chlorine substitutions. PCBs are used heat-transfer agents and as electric insulators that block the flow of electric current across in electrical equipments. They are known as environmental pollution materials which are accumulated in animal tissues and cause toxic effects including carcinogenesis. Biphenyl is used as an intermediate for the production of a wide range of organic compounds (e.g. emulsifiers, optical brighteners, crop protection products, plastics), as a heat transfer medium alone or with diphenyl ether in heating fluids, as a dyestuff carrier for textiles and copying paper and as a solvent in pharmaceutical production. Aminodiphenyls are used as rubber antioxidants and intermediates for the synthesis of organic compounds ( azo dyes and pharmaceuticals). Biphenyl derivatives are used as an intermediate for the synthesis of organic compounds including pharmaceuticals, antifungal agents, optical brightening agents and dyes. Biphenyl compounds also used in luminescence chemistry, spectrophotometric analysis, molecular chemistry, and as a stating material for organometallic-complexes.

Nitrile is an organic compounds containing cyano group (-C》N, containing trivalent nitrogen) which is attached to one carbon atom with the general formula RC》N. Their names are corresponding to carboxylic acids by changing '-ic acid' to the suffix, '-onitrile' which denotes only the 》N atom (triply bound) excluding the carbon atom attached to it, or  the suffix, '-carbonitrile' where the carbon atom in the -CN is included, whichever preserves a single letter O. Examples are acetonitrile from acetic acid and benzonitrile from benzoic acid. The prefix,  'cyano-' is used as an alternative naming system to indicate the presence of a nitrile group in a molecule for the compounds of salts and organic derivatives of hydrogen cyanide (HC》N). Isocyanides are salts and hydrocarbyl derivatives from the isomer, HN+》C-.

SALES SPECIFICATION

APPEARANCE

yellowish crystalline powder

PURITY

99.0% min

MELTING POINT

192 - 195 C
TRANSPORTATION
PACKING  
HAZARD CLASS 6.1 (Packing Group: III)
UN NO. 3276
OTHER INFORMATION
Hazard Symbols: XN, Risk Phrases: 20/21/22-36/37/38, Safety Phrases: 26-36