IUPAC Name: naphthalene-1,8-diamine 
Empirical Formula: C₁₀H₁₀N₂
Molecular Weight: 158.1998g/mol
EINECS: 207-529-8 
Structure of 1,8-Naphthalenediamine (CAS NO.479-27-6):

Index of Refraction: 1.757
Molar Refractivity: 52.56 cm³
Molar Volume: 128.1 cm³
Polarizability: 20.83×10^-24cm³
Surface Tension: 64.3 dyne/cm
Density: 1.234 g/cm³
Flash Point: 198.7 °C
Enthalpy of Vaporization: 59.69 kJ/mol
Boiling Point: 352.1 °C at 760 mmHg
Vapour Pressure: 3.93E-05 mmHg at 25°C 
Physical Appearance: Off white powder
Product Categories: Intermediates of Dyes and Pigments;Benzene derivatives;Organics 
Canonical SMILES: C1=CC2=C(C(=C1)N)C(=CC=C2)N
InChI: InChI=1S/C10H10N2/c11-8-5-1-3-7-4-2-6-9(12)10(7)8/h1-6H,11-12H2
InChIKey: YFOOEYJGMMJJLS-UHFFFAOYSA-N

Hazard Codes: Xn,Xi
Risk Statements: 22-40-43-36/37/38
R22:Harmful if swallowed. 
R40:Limited evidence of a carcinogenic effect. 
R43:May cause sensitization by skin contact. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 36/37-36/37/39-26-24-36
S36/37:Wear suitable protective clothing and gloves.
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S24:Avoid contact with skin. 
S36:Wear suitable protective clothing.
RIDADR: 2811
WGK Germany: 3
F: 8
Hazard Note: Irritant
HS Code: 29215940 

  1,8-Naphthalenediamine , its cas register number is 479-27-6. It also can be called 1,8-Diaminonaphthalene ; AI3-03804 ;
 CCRIS 8398 ; EINECS 207-529-8 ; NSC 6081 ; Naphthalene-1,8-diamine . 1,8-Naphthalenediamine (CAS NO.479-27-6) is harmful if swallowed and it is irritating to eyes, respiratory system and skin. It may also cause sensitization by skin contact.