phenylenediamine

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phenylenediamine [¦fen·əl‚ēn′dī·ə‚mēn]

(organic chemistry)

C₆H₄(NH₂)₂Also known as diaminobenzene. Any of three toxic isomeric crystalline compounds that are diamino derivatives of benzene; the ortho form, toxic colorless crystals melting at 102-104°C and soluble in alcohol, ether, water, and chloroform, is used to manufacture dyes, in photographic developers, and as a chemical intermediate; the meta form, colorless crystals unstable in air, melting at 63°C, and soluble in alcohol, ether, and water, is used to manufacture dyes, in textile dyeing, and as a nitrous acid detector; the para form, white to purple crystals melting at 147°C, soluble in alcohol and ether, and irritating to the skin, is used to manufacture dyes, in chemical analysis, and in photographic developers.

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No references found			Coloursmart is a patch, applied in the same way as a temporary transfer, which is impregnated with phenylenediamine (PPD) and its derivatives. FASHOIN & BEAUTY: Putting in colour - taking out risk by Coventry Evening Telegraph (England) Typically the nastiest culprit of an itchy scalp and hair dyes problem is the chemical Phenylenediamine (PPD). Why Your Hair Dye Is Burning Your Scalp - Itchy Scalp and Hair Dyes by Roger james / Health, general community patent: 5,733,965 Issued: March 31, 1998 Inventors: Thomas Scholl, Hermann-Josef Weidenhaupt and Ulrich Eisele Assigned: Bayer AG [ILLUSTRATION OMITTED] Silicone compounds containing a phenylenediamine functional group and their application in the protection of rubber materials against ozone U. Patent News by Samples, Bob / Rubber World			phenotypic suppression phenoxy resin phenoxyacetic acid phenoxybenzamine hydrochloride phenoxymethylpenicillin phenoxypropanediol phentolamine hydrochloride phenyl phenyl cyanide phenyl diglycol carbonate Phenyl Ether phenyl fluoride phenyl ketone phenyl mercaptan phenyl mustard oil Phenyl Salicylate phenylacetaldehyde phenylacetic acid Phenylalanine phenylaniline phenylbenzene phenylbutazone phenylcyclohexane Phenyldichloroarsine phenylene blue phenylenediamine Phenylenediamines phenylephrine phenylethyl acetate Phenylethyl Alcohol phenylethylene phenylglyoxylonitriloximeO,O-diethyl phosphorothioate phenylhydrazine phenylketonuria Phenylketonuria Pku phenylmercuric acetate phenylmercuric chloride phenylmercuric hydroxide phenylmercuric oleate phenylmercuric propionate phenylmercuriethanolammonium acetate phenylmethane phenylmethanol phenylmethyl acetate Phenylone phenylphenol phenylpropane phenylpropanolamine hydrochloride phenylpropyl alcohol phenylpropyl aldehyde phenylpyruvic acid			phenylalanine deaminase test Phenylalanine hydroxylase Phenylalanine hydroxylase phenylalaninemia Phenylalmine Phenylalmine Phenylalmine phenylamine phenylamine phenylamine phenylaniline Phenylanine Phenylanine Phenylanine phenylbenzene Phenylbenzimidazole sulfonic acid Phenylbenzoquinone phenylbutazone phenylbutazone phenylbutazone Phenylbutyrates Phenylcarbinol Phenylcarbinol phenylcyclohexane Phenyldiazomethane phenyldichloroarsine Phenyldiguanide phenylene phenylene blue Phenylene Ether Co-polymer phenylenediamine Phenylenediamines Phenylephedrine Phenylephedrine Phenylephedrine phenylephrine phenylephrine phenylephrine phenylephrine Phenylephrine HCl Phenylephrine HCl Phenylephrine HCl Phenylephrine hydrochloride Phenylephrine hydrochloride Phenylephrine hydrochloride Phenylethanolamine N-methyltransferase Phenylethanolamine-N-Methyl Transferase Phenylethene Phenylethene Phenylethene phenylethyl acetate phenylethyl alcohol phenylethyl alcohol phenylethyl alcohol phenylethyl alcohol Phenylethyl Isothiocyanate phenylethylamine phenylethylamine phenylethylamine Phenylethylamines Phenylethylamines

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