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104-23-4

Basic Information
CAS No.: 104-23-4
Name: 4'-Aminoazobenzene-4-sulphonic acid
Article Data: 21
Molecular Structure:
Molecular Structure of 104-23-4 (4'-Aminoazobenzene-4-sulphonic acid)
Formula: C12H11N3O3S
Molecular Weight: 277.304
Synonyms: Benzenesulfonicacid, 4-[(4-aminophenyl)azo]- (9CI);Benzenesulfonic acid,p-(p-aminophenylazo)- (6CI);C.I. Food Yellow 6 (8CI);4-(4-Aminophenylazo)benzenesulfonic acid;4-(4-Sulfophenylazo)aniline;4-(4'-Sulfophenylazo)aniline;4-Amino-1,1'-azobenzene-4'-sulfonic acid;4-Amino-4'-sulfoazobenzene;4-Aminoazobenzene-4'-sulfonic acid;4'-Sulfo-4-aminoazobenzene;NSC 4704;p-[(p-Aminophenyl)azo]benzenesulfonic acid;
EINECS: 203-187-9
Density: 1.43 g/cm3
Melting Point: 125-131°C
Boiling Point: 477.42℃[at 101 325 Pa]
Solubility: 513-1320mg/L at 37℃
Hazard Symbols: Xi
PSA: 116.32000
LogP: 4.25030
Synthetic route
26021-90-9

sodium anilinomethanesulfonate

6118-33-8

p-sulfobenzenediazonium chloride

104-23-4

4'-aminoazobenzene-4-sulfonic acid

Conditions
ConditionsYield
Stage #1: sodium anilinomethanesulfonate; p-sulfobenzenediazonium chloride With sodium acetate In water
Stage #2: With sodium hydroxide In water Reflux;
70%
68-34-8

phenyl toluenesulfonamide

305-80-6

4-diazobenzenesulfonic acid

104-23-4

4'-aminoazobenzene-4-sulfonic acid

Conditions
ConditionsYield
und Verseifen des Reaktionsprodukts mit konz.Schwefelsaeure bei 40grad;
23792-61-2

4-(4-nitro-phenylazo)-benzenesulfonic acid

104-23-4

4'-aminoazobenzene-4-sulfonic acid

Conditions
ConditionsYield
With ammonium hydrosulphide; ethanol
861869-60-5

4-[4-(2,4,6-trinitro-anilino)-phenylazo]-benzenesulfonic acid

furan-2,3,5(4H)-trione pyridine (1:1)

A

88-89-1

2,4,6-Trinitrophenol

B

104-23-4

4'-aminoazobenzene-4-sulfonic acid

3457-98-5

4-phenylazoaniline hydrochloride

A

101-50-8

4-aminoazobenzene-3,4'-disulfonic acid

B

104-23-4

4'-aminoazobenzene-4-sulfonic acid

Conditions
ConditionsYield
With sulfuric acid at 90 - 100℃;
With sulfuric acid at 90 - 100℃;
305-80-6

4-diazobenzenesulfonic acid

62-53-3

aniline

A

622-37-7

Phenyl azide

B

104-23-4

4'-aminoazobenzene-4-sulfonic acid

C

121-57-3

4-aminobenzene sulfonic acid

305-80-6

4-diazobenzenesulfonic acid

62-53-3

aniline

104-23-4

4'-aminoazobenzene-4-sulfonic acid

Conditions
ConditionsYield
With water man laesst 24 Stdn.stehen, filtriert ab und entzieht dem Nied. durch kal. Aether beigemengtes Diazoaminobenzol; die ungeloeste 4'-Amino-azobenzol-sulfonsaeure-(4) bindet man an Ammoniak und reinigt das Salz durch Umkrystallis.;
sulfate of 4-amino-azobenzene

sulfate of 4-amino-azobenzene

104-23-4

4'-aminoazobenzene-4-sulfonic acid

Conditions
ConditionsYield
With sulfuric acid; sulfur trioxide at 30 - 35℃;
With sulfuric acid; sulfur trioxide at 30 - 35℃;
7664-93-9

sulfuric acid

60-09-3

aniline yellow

A

101-50-8

4-aminoazobenzene-3,4'-disulfonic acid

B

104-23-4

4'-aminoazobenzene-4-sulfonic acid

Conditions
ConditionsYield
at 30 - 35℃;
at 30 - 35℃;
sulfate of 4-amino-azobenzene

sulfate of 4-amino-azobenzene

A

101-50-8

4-aminoazobenzene-3,4'-disulfonic acid

B

104-23-4

4'-aminoazobenzene-4-sulfonic acid

Conditions
ConditionsYield
With sulfuric acid; sulfur trioxide at 30 - 35℃;
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  • 4'-Aminoazobenzene-4-sulphonic acid CAS No.104-23-4

  • Casno:

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  • 4-((4-aminophenyl)diazenyl)benzenesulfonic acid

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    104-23-4

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  • 4'-Aminoazobenzene-4-sulphonic acid

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Chemistry

IUPAC Name: 4-(4-aminophenyl)diazenylbenzenesulfonic acid
The MF of 4'-AMINOAZOBENZENE-4-SULFONIC ACID(104-23-4): C12H11N3O3S
The MW of 4'-AMINOAZOBENZENE-4-SULFONIC ACID(104-23-4): 277.3
EINECS: 203-187-9
Density: 1.43 g/cm3 
Index of Refraction: 1.663 
Categories: Intermediates of Dyes and Pigments;Organics
Synonyms: 4-((4-aminophenyl)azo)-benzenesulfonicaci;4-(4'-sulfophenylazo)aniline;4-(4-sulfophenylazo)aniline;4-[(4-aminophenyl)azo]-benzenesulfonicaci;c.i.foodyellow6;p-((p-aminophenyl)azo)-benzenesulfonicaci;p-(p-aminophenylazo)-benzenesulfonic;SODIUM 4-AMINOAZOBENZENE-4'-SULFONATE
The Structure of 4'-AMINOAZOBENZENE-4-SULFONIC ACID(104-23-4):

Uses

4'-AMINOAZOBENZENE-4-SULFONIC ACID(104-23-4) is used as dye intermediates.

Toxicity Data With Reference

1.   

otr-ham:kdy 25 mg/L

   BJCAAI    British Journal of Cancer. 38 (1978),34.

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Mutation data reported. When heated to decomposition it emits toxic vapors of NOx and SOx.