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Potassium dihydrogen phosphate
4-aminobiphenyl hydrochloride ammonia Chinese name: 4-aminobiphenyl hydrochloride ammonia Chinese Synonyms: 4- (phenylazo) aniline hydrochloride; 4-amino-azobenzene, hydrochloride; 4-amino azobenzene hydrochloride; benzidine hydrochloride; 4-amino Benzidine hydrochloride English name: 4-AMINOAZOBENZENE HYDROCHLORIDE Synonyms: 4- (phenylazo) benzenaminemonohydrochloride; 4- (phenylazo) -benzenaminmonohydrochloride; AminoazobenzeneSalt; Benzenamine, 4- (phenylazo) -, monohydrochloride; cisolventyellow1, monohydrochloride; p- (phenylazo) -anilinhydrochloride; 4- (phenylazo) anilinium chloride; p- (phenylazo) anilineHCl CAS: 3457-98-5 Molecular formula: C12H12ClN3 Molecular weight: 233.69678 EINECS Number: 222-390-3 Related Categories: Intermediates of Dyes and Pigments; aromatics Mol File: 3457-98-5.mol Properties: steel blue needles. Slightly soluble in water, soluble in hydrochloric acid and ethanol. use: 1, is used as dyes intermediates for the production of Direct Fast Orange GGL, acid scarlet GK, Disperse Yellow RG and FL, dyes Disperse Orange GG 2, dye intermediates for the manufacture of acid scarlet GR, Disperse Yellow RGFL, Disperse Yellow 3R WV, Disperse Orange GG like. production method:     Aniline, sodium nitrite in hydrochloric acid medium diazotization to give aniline diazonium salt, and then with the addition of another molecule of aniline diazonium diaminobenzene, and then in the presence of a small amount of aniline hydrochloride, in the 50- at 55 ℃, molecular rearrangement, acidified with hydrochloric acid to give crystalline aminoazobenzene hydrochloride, knot filtration, drying products. (See 01650) Specifications: Blue purple needle crystallization, dry goods content above 90% moisture content ≤35%.