CAS:92-87-5 C12H12N2 Benzidine CAS NO.92-87-5

Product Details

benzidine basic information

product name:	benzidine
synonyms:	(1,1’-biphenyl)-4,4’-diamine;[1,1’-biphenyl]-4,4’-diamine;[1,1'-biphenyl]-4,4'-diamine;4,4’-bianiline;4,4’-biphenylenediamine;4,4’-diamino-bipheny;4,4’-diaminodiphenyl;4,4’-diphenylenediamine
cas:	92-87-5
mf:	c12h12n2
mw:	184.24
einecs:	202-199-1
product categories:	intermediates of dyes and pigments;azo dye;amines;aromatics;method 8270more...close...;8000 series solidwaste methods;analytical standards;aromaticschemical class;aromaticsmethod specific;benzidinesepa;chemical class;a-bmethod specific;aryl amines mak iii, category 1alphabetic;alpha sort;b;ba - bhenvironmental standards;benzidines;oeko-tex standard 100;volatiles/ semivolatiles
mol file:	92-87-5.mol

benzidine chemical properties

mp	127-128 °c
bp	402°c
density	1.25
fp	11 °c
storage temp.	2-8°c
water solubility	sparingly soluble. <0.1 g/100 ml at 22 ºc
merck	13,1077
stability:	stable. combustible. incompatible with strong oxidizing agents.
cas database reference	92-87-5(cas database reference)
nist chemistry reference	benzidine(92-87-5)
epa substance registry system	[1,1'-biphenyl]- 4,4'-diamine(92-87-5)

safety information

benzidine usage and synthesis

chemical properties	off-white solid
usage	potentially mutagenic compound.
general description	a grayish-yellow to grayish-red, crystalline solid. toxic by ingestion, inhalation, and skin absorption. combustion produces toxic oxides of nitrogen. used to make other chemicals and in chemical and biological analysis.
air & water reactions	darkens on exposure to air and light. soluble in hot water.
reactivity profile	benzidine forms insoluble salts with sulfuric acid. can be diazotized, acetylated and alkylated. is hypergolic with red fuming nitric acid . neutralizes acids in exothermic reactions to form salts plus water. may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.
health hazard	poisonous if inhaled, swallowed or absorbed through skin. may cause contact dermatitis, irritation or sensitization. ingestion may cause nausea and vomiting.

benzidine preparation products and raw materials

raw materials	1,2-diphenylhydrazine-->benzidine dihydrochloride
preparation products	direct red 28-->direct black 38-->acid orange 63-->n,n'-bisbenzylidenebenzidine-->acid red 111-->c. i. pigment red 62-->acid yellow 44-->direct black bh-->acid red 114-->acid yellow 42-->ci no 22610-->acid red 97 (c.i. 22890)-->3,3'-diaminobenzidine

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