The 3,6-Dihydroxy-2,7-naphthalenedisulfonic acid ,its cas register number is .It also can be called as 2,7-Naphthalenedisulfonic acid, 3,6-dihydroxy- and the IUPAC name about this chemicals is 3,6-Dihydroxynaphthalene-2,7-disulfonic acid .It can be used as dye intermediates.

Following are the chemical properties about 3,6-Dihydroxy-2,7-naphthalenedisulfonic acid :(1)#H bond acceptors: 8 ;(2)#H bond donors: 4 ;(3)#Freely Rotating Bonds: 4 ;(4)Polar Surface Area: 121.96Ų ;(5)Index of Refraction: 1.756 ;(6)Molar Refractivity: 68.06 cm³ ;(7)Molar Volume: 165.9 cm³ ;(8)Polarizability: 26.98x10^-24cm³ ;(9)Surface Tension: 104.4 dyne/cm

This chemicals can be described computed from structure:
(1)Canonical SMILES: C1=C2C=C(C(=CC2=CC(=C1O)S(=O)(=O)O)S(=O)(=O)O)O
(2)InChI: InChI=1S/C10H8O8S2/c11-7-1-5-2-8(12)10(20(16,17)18)4-6(5)3-9(7)19(13,14)15/h1-4,11-12H,(H,13,14,15)(H,16,17,18) 
(3)InChIKey: AKYPSKXBHUGOHU-UHFFFAOYSA-N