The 5-Acenaphthenecarboxylic acid ,its cas register number is 55720-22-4.It also can be called as 5-Acenaphthylenecarboxylic acid, 1,2-dihydro- and the IUPAC name about this chemicals is 1,2-Dihydroacenaphthylene-5-carboxylic acid .It belongs to the following product categories, such as Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts, C₁₃ to C₄₂+, Carbonyl Compounds, Carboxylic Acids and so on.

Following are the chemical properties about 5-Acenaphthenecarboxylic acid :(1)#H bond acceptors: 2 ; (2)#H bond donors: 1 ; (3)#Freely Rotating Bonds: 1 ; (4)Polar Surface Area: 26.3 Å² ; (5)Index of Refraction: 1.725 ; (6)Molar Refractivity: 58.58 cm³ ; (7)Molar Volume: 147.4 cm³ ; (8)Polarizability: 23.22x10^-24cm³ ; (9)Surface Tension: 65.4 dyne/cm ; (10)Enthalpy of Vaporization: 70.67 kJ/mol ; (11)Vapour Pressure: 1.06E-07 mmHg at 25°C

The 5-Acenaphthenecarboxylic acid is a dangerous chemical, because it irritating to eyes, respiratory system and skin. In the using process, you need to wear suitable protective clothing and in case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

This chemicals can be described computed from structure:
(1)Canonical SMILES: C1CC2=CC=CC3=C(C=CC1=C23)C(=O)O
(2)InChI: InChI=1S/C13H10O2/c14-13(15)11-7-6-9-5-4-8-2-1-3-10(11)12(8)9/h1-3,6-7H,4-5H2,(H,14,15)
(3)InChIKey: DXKAWGBIIVQFIE-UHFFFAOYSA-N