Diphenylamine


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diphenylamine

[dī¦fen·əl′am‚ēn]
(organic chemistry)
(C6H5)2NH Colorless leaflets, sparingly soluble in water; melting point 54°C; used as an additive in propellants to increase the storage life by neutralizing the acid products formed upon decomposition of the nitrocellulose. Also known as phenylaniline.

Diphenylamine

 

an aromatic amine, C6H5NHC6H5; colorless crystals that darken upon exposure to light and have a slight characteristic odor. Melting point, 54°C; boiling point, 302°C. It is insoluble in water but soluble in most organic solvents. In industry, it is made by heating aniline, C6H5NH2, with aniline hydrochloride at 200°-230°C. It is used to make dyes and numerous organic intermediates (acridine, carbazole, and others), for stabilizing cellulose nitrate powders, and in colorimetric determination of some oxidizing agents (for example, nitric and nitrous acids).

References in periodicals archive ?
The clinical signs, necropsy findings, histopathological examination, epidemiological data, the positive diphenylamine test and the nitrate dosage in grass confirmed the nitrate/nitrite intoxication.
Diphenylamine inhibitor was oxidized under the irradiation of EB and generated cation radical [([C.
The indicators 2,3'-diphenylamine dicarboxylic acid, diphenylamine sulfonic acid, and diphenylamine were exposed to potassium chlorate to investigate the result as it applies to visual detection and screening.
And on CA-stored Red Delicious and Granny Smith apples, 1-MCP treatments effectively prevented scald without diphenylamine.
And on Red Delicious and Granny Smith apples placed in controlled-atmosphere storage, the gas treatment has eliminated the need for diphenylamine to prevent scald.
The purple color reaction given by diphenylamine reagent I with normal and rheumatic sera.
Various instrumental analytical techniques allow organic additives such as nitroglycerine, diphenylamine, ethyl centralite, dinitrotoluene, and various phthalates to be detected and quantitated.
The Bernthsen reaction of diphenylamine and acetic acid catalyzed by zinc chloride afforded 9-methyl acridine in over 70% yields.
One such ternary blend containing Uniroyal's Naugard 445 diphenylamine (typically used in ABS, nylon, and polyurethane) was reported to give much better color in LDPE than any binary phenolic/phosphite antioxidant combination.
Single-base propellants typically contain nitrocellulose, 2,4-dinitrotoluene, diphenylamine as stabilizer, and plasticizers such as diethyl phthalate and dibutyl phthalate.
In the spot test for urine ethchlovynol, that drug plus diphenylamine produces a pink color.