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| CAS No.: | 131-22-6 |
|---|---|
| Name: | 4-PHENYLAZO-1-NAPHTHYLAMINE |
| Article Data: | 17 |
| Molecular Structure: | |
|
|
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| Formula: | C16H13 N3 |
| Molecular Weight: | 247.299 |
| Synonyms: | 1-Naphthalenamine,4-(phenylazo)- (9CI); 1-Naphthylamine, 4-phenylazo- (6CI); C.I. Solvent Yellow4 (7CI,8CI); 4-(Phenylazo)-1-naphthylamine; 4-(Phenylazo)-a-naphthylamine;4-Benzeneazo-1-naphthylamine; C.I. 11350; NSC 13974; Nubian Yellow TB; a-Naphthyl red |
| Density: | 1.17g/cm3 |
| Melting Point: | 124°C |
| Boiling Point: | 451.4°Cat760mmHg |
| Flash Point: | 226.8°C |
| Hazard Symbols: |
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| Risk Codes: | 36/37/38 |
| Safety: | Mutation data reported. When heated to decomposition it emits toxic vapors of NOx. |
| PSA: | 50.74000 |
| LogP: | 5.41860 |
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Chemistry
Molecule structure of 4-Phenylazo-1-naphthylamine (CAS NO.131-22-6) :
IUPAC Name: 4-phenyldiazenylnaphthalen-1-amine
Molecular Weight: 247.29452 g/mol
Molecular Formula: C16H13N3
Density: 1.17 g/cm3
Melting Point: 123 °C
Boiling Point: 451.4 °C at 760 mmHg
Flash Point: 226.8 °C
Water Solubility: 1.680 mg/L
Appreance: red-violet light-emitting needle-shaped crystals
Molar Volume: 210.8 cm3
Polarizability: 30.38*10-24 cm3
Surface Tension: 47.7 dyne/cm
Enthalpy of Vaporization: 71.04 kJ/mol
Vapour Pressure: 2.45E-08 mmHg at 25 °C
Henry's Law Constant: 5.07E-10 atm-m3/mole at 25 °C
Atmospheric OH Rate Constant: 4.90E-11 cm3/molecule-sec at 25 °C
XLogP3-AA: 4.3
H-Bond Donor: 1
H-Bond Acceptor: 3
Rotatable Bond Count: 2
Tautomer Count: 2
Exact Mass: 247.110947
MonoIsotopic Mass: 247.110947
Topological Polar Surface Area: 50.7
Heavy Atom Count: 19
Complexity: 309
Canonical SMILES: C1=CC=C(C=C1)N=NC2=CC=C(C3=CC=CC=C32)N
InChI: InChI=1S/C16H13N3/c17-15-10-11-16(14-9-5-4-8-13(14)15)19-18-12-6-2-1-3-7-12/h1-11H,17H2
InChIKey: IICHURGZQPGTRD-UHFFFAOYSA-N
EINECS: 205-018-4
Uses
4-Phenylazo-1-naphthylamine (CAS NO.131-22-6) is used to be acid-base indicator. pH4.0 (red) to 5.0 (orange)
Production
4-Phenylazo-1-naphthylamine (CAS NO.131-22-6) is made from Aniline diazonium salt, and then coupling with α-Naphthylamine derived.
Toxicity Data With Reference
| 1. | mma-sat 500 µg/plate | AEMIDF Applied and Environmental Microbiology. 42 (1981),641. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Mutation data reported. When heated to decomposition it emits toxic vapors of NOx.
Hazard Codes: 
Xi
Risk Statements: 36/37/38
R36/37/38: Irritating to eyes, respiratory system and skin
Safety Statements: 26-36
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S36: Wear suitable protective clothing
WGK Germany: 3
RTECS: QJ0360000
Specification
4-Phenylazo-1-naphthylamine (CAS NO.131-22-6) is also called 1-Amino-4-phenylazonaphthalene ; 1-Naphthalenamine, 4-(phenylazo)- ; 1-Naphthylamine, 4-(phenylazo)- ; 4-[(E)-Phenyldiazenyl]-1-naphthalenamine ; 4-Benzeneazo-1-naphthylamine ; 4-Benzene-azo-alpha-naphthylamine ; BNA . 4-Phenylazo-1-naphthylamine (CAS NO.131-22-6) do not dissolve in water, but rendering the red-brown solution soluble in alcohol, ether and benzene. And It slightly soluble in diluted acid solution rendering a red rose solution.