Aromatic Azo- and Benzidine-Based Substances

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Azo Basic Dyes

Monoazo Basic Dyes
Substances Colour Index (C.I.) Information [1] Empirical Data Availability [***] Section 71
Chemical Abstracts Service Registry Number (CAS RN) Domestic Substances List (DSL) Name C.I. Generic Name(s) C.I. Consti-
tution Number(s)
Other CASNo. Asso-
ciated with C.I. name / number
Physical-Chemical Properties Ecolo-
gical End-
points
Health End-
points
Water Solu-
bility
Log Kow Mel-
ting / Decom-
posi-
tion point
136-40-3 2,6-Pyridinediamine, 3-(phenylazo)-, monohydrochloride -- -- -- X -- X -- X N
532-82-1 1,3-Benzenediamine, 4-(phenylazo)-, monohydrochloride C.I. Basic Orange 2 C.I.11270  -- -- -- -- -- -- N
2869-83-2 Phenazinium, 3-(diethylamino)-7-[[4-(dimethylamino)phenyl]azo]-5-phenyl-, chloride -- C.I.11050[2] -- -- -- -- -- -- N
4608-12-2 Phenazinium, 3-(dimethylamino)-7-[[4-(dimethylamino)phenyl]azo]-5-phenyl-, chloride -- -- -- -- -- -- -- X N
4618-88-6 Phenazinium, 3-amino-7-[[4-(dimethylamino)phenyl]azo]-5-phenyl-, chloride -- C.I.11045[2] -- -- -- -- -- -- Y
10189-42-1 Pyridinium, 1-[2-[[4-[[2,6-dichloro-4-[(dimethylamino)sulfonyl]phenyl]
azo]phenyl]ethylamino]ethyl]-, chloride
-- -- -- -- -- -- -- -- Y
14408-20-9 Pyridinium, 1-[2-[[4-[(2,6-dichloro-4-nitrophenyl)azo]phenyl]
ethylamino]ethyl]-, chloride
-- -- -- -- -- -- -- -- Y
14970-39-9 1H-1,2,4-Triazolium, 5-[[4-(diethylamino)phenyl]azo]-1,4-dimethyl-, trichlorozincate(1-) -- -- -- -- -- -- -- -- N
23408-72-2 Benzothiazolium, 2-[[4-(dimethylamino)phenyl]azo]-3-ethyl-6-methoxy-, trichlorozincate(1-) C.I.Disperse Brown 1 C.I.11152  -- -- -- -- -- -- Y
29508-48-3 1H-Pyrazolium, 1,5-dimethyl-3-[(2-methyl-1H-indol-3-yl)azo]-2-phenyl-, methyl sulfate -- -- -- -- -- -- -- -- Y
36986-04-6 Pyridinium, 1-[2-[[4-[(2-chloro-4-nitrophenyl)azo]phenyl]
ethylamino]ethyl]-, chloride
-- -- -- -- -- -- -- X Y
52769-39-8 1H-1,2,4-Triazolium, dimethyl-3-[[4-[methyl(phenylmethyl)
amino]phenyl]azo]-, trichlorozincate(1-)
-- -- -- -- -- -- -- X Y
59709-10-3 Pyridinium, 1-[2-[[4-[(2-chloro-4-nitrophenyl)azo]phenyl]
ethylamino]ethyl]-, acetate
-- -- -- -- -- -- -- -- Y
63589-49-1 1H-Pyrazolium, 2-cyclohexyl-3-[[4-(diethylamino)phenyl]azo]-1-methyl-, (T-4)-tetrachlorozincate(2-) (2:1) -- -- -- -- -- -- -- -- Y
63681-54-9 Benzenesulfonic acid, dodecyl-, compd. with 4-(phenylazo)-1,3-benzenediamine (1:1) -- -- -- -- -- -- -- -- N
65150-98-3 Thiazolium, 2-[[4-(diethylamino)phenyl]azo]-3-methyl-, (T-4)-tetrachlorozincate(2-) (2:1) -- -- -- -- -- -- -- -- Y
68929-07-7 Benzothiazolium, 2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-5-methoxy-3-methyl-, methyl sulfate (salt) -- -- -- -- -- -- -- -- N
68936-17-4 1H-Imidazolium, 2-[[4-(dimethylamino)phenyl]azo]-1,3-dimethyl-, (T-4)-tetrachlorozincate(2-) (2:1) -- -- -- -- -- -- -- -- N
69852-41-1 Benzothiazolium, 2-[[4-[ethyl(2-hydroxyethyl)amino]phenyl]azo]-6-methoxy-3-methyl-, (T-4)-tetrachlorozincate(2-) (2:1) -- -- -- -- -- -- -- -- N
72361-40-1 Pyridinium, 1-[2-[[4-[(2-bromo-4,6-dinitrophenyl)azo]-3-methylphenyl]ethylamino]ethyl]-, chloride -- -- -- -- -- -- -- -- N
72379-36-3 1H-1,2,4-Triazolium, 5-[[4-[ethyl(phenylmethyl)
amino]phenyl]azo]-1,4-dimethyl-, (T-4)-tetrachlorozincate(2-) (2:1)
-- -- -- -- -- -- -- -- N
72379-37-4 1H-1,2,4-Triazolium, 3-[[4-[ethyl(phenylmethyl)
amino]phenyl]azo]-1,2-dimethyl-, (T-4)-tetrachlorozincate(2-) (2:1)
-- -- -- -- -- -- -- -- N
75660-25-2 1,3-Benzenediamine, 4-(phenylazo)-, monoacetate -- -- -- -- -- -- -- -- N
79234-33-6 1,3-Benzenediamine, 4-(phenylazo)-, acetate -- -- -- -- -- -- -- -- N
83969-13-5 1,3,4-Thiadiazolium, 5-[bis(1-methylethyl)amino]-2-[[4-(dimethylamino)phenyl]azo]-3-methyl-, sulfate (2:1) -- -- -- -- -- -- -- -- N
85114-37-0 1H-1,2,4-Triazolium, 1,4-dimethyl-3(or 5)-[[4-[methyl(phenylmethyl)
amino]phenyl]azo]-, (T-4)-tetrachlorozincate(2-) (2:1)
-- -- -- -- -- -- -- -- Y
85480-88-2 Benzothiazolium, 3-(3-amino-3-oxopropyl)-2-[(1-ethyl-2-phenyl-1H-indol-3-yl)azo]-, (T-4)-tetrachlorozincate(2-) (2:1) -- -- -- -- -- -- -- -- Y
93783-70-1 1,3,4-Thiadiazolium, 5-[bis(1-methylethyl)amino]-2-[[4-(dimethylamino)phenyl]azo]-3-methyl-, trichlorozincate(1-) -- -- -- -- -- -- -- -- N
Disazo Basic Dyes
Substances Colour Index (C.I.) Information Empirical Data Availability Section 71
Chemical Abstracts Service Registry Number (CAS RN) Domestic Substances List (DSL) Name C.I. Generic Name(s) C.I. Consti-
tution Number(s)
Other CASNo. Asso-
ciated with C.I. name / number
Physical-Chemical Properties Ecolo-
gical End-
points
Health End-
points
Water Solu-
bility
Log Kow Mel-
ting / Decom-
posi-
tion point
10114-58-6 1,3-Benzenediamine, 4,4’-[1,3-phenylenebis(azo)]bis-, dihydrochloride C.I. Basic Brown 1 C.I.21000  10114586, 8005774, 1052386 X -- -- X X Y
71032-95-6 2-Naphthalenesulfonic acid, 7-[[4,6-bis[[3-(diethylamino)propyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[4-(phenylazo)phenyl]azo]-, monoacetate (salt) -- -- -- -- -- -- -- -- Y
74744-63-1 1H-1,2,4-Triazolium, 3,3’(or 5,5’)-[1,2-ethanediylbis[(ethylimino)-4,1-phenyleneazo]]bis[1,4-dimethyl-, (T-4)-tetrachlorozincate(2-) (1:1) -- -- -- -- -- -- -- -- Y
75199-20-1 1,3’-Bipyridinium, 1’,2’-dihydro-6’-hydroxy-3,4’-dimethyl-2’-oxo-5’-[[4-(phenylazo)phenyl]azo]-, chloride -- -- -- -- -- -- X -- N
125329-01-3 Propanoic acid, 2-hydroxy-, compd. with 7-[[4,6-bis[[3-(diethylamino)propyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[4-(phenylazo)phenyl]azo]-2-naphthalenesulfonic acid (1:1) -- -- -- -- -- -- -- -- Y

Notes and Legend

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2026-10-08