The CAS register number of 2,5-Disulphobenzaldehyde is 51818-11-2. The systematic name about this chemical is 2-formylbenzene-1,4-disulfonic acid. The molecular formula about this chemical is C₇H₆O₇S₂ and the molecular weight is 266.25.

Physical properties about 2,5-Disulphobenzaldehyde are: (1)ACD/BCF (pH 5.5): 1; (2)ACD/BCF (pH 7.4): 1; (3)ACD/KOC (pH 5.5): 1; (4)ACD/KOC (pH 7.4): 1; (5)#H bond acceptors: 7; (6)#H bond donors: 2; (7)#Freely Rotating Bonds: 3; (8)Polar Surface Area: 142.57 Å²; (9)Index of Refraction: 1.633; (10)Molar Refractivity: 52.42 cm³; (11)Molar Volume: 146.6 cm³; (12)Polarizability: 20.78x10^-24cm³; (13)Surface Tension: 82.7 dyne/cm; (14)Density: 1.815 g/cm³.

You can still convert the following datas into molecular structure:
(1)SMILES: O=S(O)(=O)c1ccc(cc1C=O)S(O)(=O)=O
(2)InChI: InChI=1/C7H6O7S2/c8-4-5-3-6(15(9,10)11)1-2-7(5)16(12,13)14/h1-4H,(H,9,10,11)(H,12,13,14)
(3)InChIKey: DILXLMRYFWFBGR-UHFFFAOYAI
(4)Std. InChI: InChI=1S/C7H6O7S2/c8-4-5-3-6(15(9,10)11)1-2-7(5)16(12,13)14/h1-4H,(H,9,10,11)(H,12,13,14)
(5)Std. InChIKey: DILXLMRYFWFBGR-UHFFFAOYSA-N