Chrysoidine
Title: Chrysoidine
CAS Registry Number: 532-82-1
CAS Name: 4-(Phenylazo)-1,3-benzenediamine monohydrochloride
Additional Names: 4-phenylazo-m-phenylenediamine hydrochloride; 2,4-diaminoazobenzene hydrochloride; chrysoidine orange; chrysoidine Y; C.I. 11270; C.I. Basic Orange 2
Molecular Formula: C12H13ClN4
Molecular Weight: 248.71
Percent Composition: C 57.95%, H 5.27%, Cl 14.25%, N 22.53%
Literature References: Prepn: Hofmann, Ber. 10, 213 (1877); Maximoff, US 2053095 (1935 to Azodal Co.). Prepn of salt: DE 562392 (1933 to Chem.-Pharm. Fabrik Hubold & Bartsch). See also Colour Index vol. 4 (3rd ed., 1971) p 4019; H. J. Conn's Biological Stains, R. D. Lillie, Ed. (Williams & Wilkins, Baltimore, 9th ed., 1977) p 87.
Properties: Reddish-brown crystalline powder, mp 118-118.5°. Solubility at 15°: water 5.5%; abs ethanol 4.75%; cellosolve 6.0%; anhydr ethylene glycol 9.5%; xylene 0.005%; slightly sol in acetone. Practically insol in benzene. Gives yellow soln in concd H2SO4, orange soln in dil H2SO4 and in HNO3.
Melting point: mp 118-118.5°
 
Derivative Type: Citrate
CAS Registry Number: 5909-04-6
Additional Names: 4-Phenylazo-m-phenylenediamine hydrochloride citrate; 2,4-diaminoazobenzene hydrochloride citrate
Trademarks: Azoangin (Ursapharm); Azohel (Ursapharm)
Molecular Formula: C12H13ClN4.C6H8O7
Molecular Weight: 440.83
Percent Composition: C 49.04%, H 4.80%, Cl 8.04%, N 12.71%, O 25.41%
Properties: Sol in water (up to 4%), alcohol.
 
Derivative Type: Free base
CAS Registry Number: 495-54-5
Additional Names: C.I. Solvent Orange 3
Molecular Formula: C12H12N4
Molecular Weight: 212.25
Percent Composition: C 67.91%, H 5.70%, N 26.40%
 
Use: Dyeing silk and cotton. Biological stain.
Therap-Cat: Citrate as antiseptic.

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