Product Name

  • Name

    4-(METHYLAMINO)AZOBENZENE

  • EINECS
  • CAS No. 621-90-9
  • Density 1.06g/cm3
  • Solubility
  • Melting Point 87°C
  • Formula C13H13 N3
  • Boiling Point 370.2°C at 760 mmHg
  • Molecular Weight 211.266
  • Flash Point 177.7°C
  • Transport Information
  • Appearance
  • Safety Moderately toxic by subcutaneous route. Experimental teratogenic and reproductive effects. Questionable carcinogen with experimental carcinogenic, neoplastigenic, and tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx.
  • Risk Codes R40
  • Molecular Structure Molecular Structure of 621-90-9 (4-(METHYLAMINO)AZOBENZENE)
  • Hazard Symbols
  • Synonyms Aniline,N-methyl-p-(phenylazo)- (6CI,7CI,8CI); Benzenamine, N-methyl-4-(phenylazo)-(9CI); 4-(Methylamino)azobenzene; MAB; N-Methyl-4-(phenylazo)aniline;N-Methyl-4-aminoazobenzene; p-(Methylamino)azobenzene;p-(Phenylazo)-N-methylaniline
  • PSA 36.75000
  • LogP 4.21670

N-MethyL-p-(phenylazo)aniline Chemical Properties

IUPAC Name: N-Methyl-4-phenyldiazenylaniline
Synonyms of N-MethyL-p-(phenylazo)aniline (CAS NO.621-90-9) : Benzenamine, N-methyl-4-[(E)-2-phenyldiazenyl]- ; N-Methyl-4-[(E)-phenyldiazenyl]aniline ; Aniline, N-methyl-p-(phenylazo)- ; Benzenamine, N-methyl-4-(phenylazo)-
InChI:InChI=1/C13H13N3/c1-14-11-7-9-13(10-8-11)16-15-12-5-3-2-4-6-12/h2-10,14H,1H3/b16-15+
CAS NO:621-90-9
Molecular Formula:C13H13N3                                         
Molecular Weight :211.2624                                                         
Molecular Structure :
Index of Refraction: 1.584          
Surface Tension: 40 dyne/cm 
Density: 1.06 g/cm3 
Flash Point: 177.7 °C 
Melting Point: 87°C 
Enthalpy of Vaporization: 61.7 kJ/mol 
Boiling Point: 370.2 °C at 760 mmHg 
Vapour Pressure: 1.13E-05 mmHg at 25°C

N-MethyL-p-(phenylazo)aniline Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LDLo subcutaneous 600mg/kg (600mg/kg)   Okajimas Folia Anatomica Japonica. Vol. 36, Pg. 195, 1960.

N-MethyL-p-(phenylazo)aniline Consensus Reports

EPA Genetic Toxicology Program.

N-MethyL-p-(phenylazo)aniline Safety Profile

Moderately toxic by subcutaneous route. Experimental teratogenic and reproductive effects. Questionable carcinogen with experimental carcinogenic, neoplastigenic, and tumorigenic data. Mutation data reported. When N-MethyL-p-(phenylazo)aniline (CAS NO.621-90-9) is heated to decomposition ,it emits toxic fumes of NOx.

Risk Statements 
R40: N-MethyL-p-(phenylazo)aniline (CAS NO.621-90-9) has limited evidence of a carcinogenic effect. 
Safety Statements 53
S53:Avoid exposure - obtain special instructions before use.
RTECS BY5950000

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