PICENE manufacturers and suppliers in india

PICENE

Properties

Melting point:: 366-367°

Boiling point:: bp 518-520°

Density: 1.1489 (estimate)

refractive index: 1.8120 (estimate)

storage temp.: 2-8°C

solubility: DMSO (Slightly), Methanol (Slightly)

form: Solid

color: White to Bight Beige

Water Solubility: 2.5ug/L(27 ºC)

λmax: 285nm(CH2Cl2)(lit.)

Merck: 14,7396

Safety Information

Symbol(GHS): GHS08

Signal word: Warning

Hazard statements: H371

Precautionary statements: P260-P264-P270-P309+P311-P405-P501

RIDADR: 2811

RTECS: TJ3700000

HS Code: 2902.90.9000

HazardClass: 6.1(b)

PackingGroup: III

Use

Picene, a polycyclic aromatic hydrocarbon (PAH) of environmental relevance has recently been predicted to be carcinogenic, based on quantum mechanical calculation, although in several animal studies no carcinogenicity could be detected. Picene, a hydrocarbon found in the pitchy residue obtained in the distillation of peat-tar and of petroleum. This is distilled to dryness and the distillate repeatedly recrystallized from cymene It may be synthetically prepared by the action of anhydrous aluminium chloride on a mixture of naphthalene and ethylene dibromide, or by distilling -dinaphthostilbene. It crystallizes in large colourless plates wi hich possess a blue fluorescence It is soluble in concentrated sulphuric acid with a green colour. Chromic acid in glacial acetic acid solution oxidizes it to picene-quinone, picene-quinone carboxylic acid, and finally to phthalic acid. When heated with hy driodic acid and phosphorus it forms hydrides of composition C22H34 and C22H36.