IUPAC Name: naphthalene-1,4-dicarboxylic acid 
Empirical Formula: C₁₂H₈O₄ 
Molecular Weight: 216.1895g/mol
EINECS: 210-094-7 
Structure of 1,4-Naphthalenedicarboxylicacid (CAS NO.605-70-9):

Index of Refraction: 1.708
Molar Refractivity: 57.95 cm³
Molar Volume: 148.6 cm³
Polarizability: 22.97×10^-24cm³
Surface Tension: 73.6 dyne/cm
Density: 1.454 g/cm³
Flash Point: 264.3 °C
Enthalpy of Vaporization: 79.69 kJ/mol
Boiling Point: 490.2 °C at 760 mmHg
Vapour Pressure: 2.01E-10 mmHg at 25°C 
Product Categories: Intermediates of Dyes and Pigments;Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts;Carboxylic Acid Monomers;Monomers;Polymer Science 
Canonical SMILES: C1=CC=C2C(=C1)C(=CC=C2C(=O)O)C(=O)O
InChI: InChI=1S/C12H8O4/c13-11(14)9-5-6-10(12(15)16)8-4-2-1-3-7(8)9/h1-6H,(H,13,14)(H,15,16)
InChIKey: ABMFBCRYHDZLRD-UHFFFAOYSA-N

Hazard Codes: Xi
Risk Statements: 36/37/38
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S37/39:Wear suitable gloves and eye/face protection.
WGK Germany: 1

  1,4-Naphthalenedicarboxylicacid , its cas register number is 605-70-9. It also can be called Naphthalene-1,4-dicarboxylic acid ; 1,4-Naphthalic acid . 1,4-Naphthalenedicarboxylicacid (CAS NO.605-70-9) is irritating to eyes, respiratory system and skin. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.