The Tetrahydroxyquinone, with the CAS registry number 319-89-1 and EINECS registry number 206-275-5, has the systematic name of 2,3,5,6-tetrahydroxycyclohexa-2,5-diene-1,4-dione. It is a kind of blue-black crystals, and belongs to the following categories: Anthraquinones, Hydroquinones and Quinones. It is very stable, but incompatible with strong oxidizing agents or strong bases. The molecular formula of the chemical is C₆H₄O₆.

The characteristics of Tetrahydroxyquinone as followings: (1)ACD/LogP: -2.18; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -6.88; (4)ACD/LogD (pH 7.4): -8.37; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 6; (10)#H bond donors: 4; (11)#Freely Rotating Bonds: 4; (12)Polar Surface Area: 71.06 Å²; (13)Index of Refraction: 2.023; (14)Molar Refractivity: 33.48 cm³; (15)Molar Volume: 65.9 cm³; (16)Polarizability: 13.27×10^-24cm³; (17)Surface Tension: 321.9 dyne/cm; (18)Density: 2.609 g/cm³; (19)Flash Point: 192.1 °C; (20)Enthalpy of Vaporization: 71.45 kJ/mol; (21)Boiling Point: 370.6 °C at 760 mmHg; (22)Vapour Pressure: 5.3E-07 mmHg at 25°C.

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin. Therefore, you had better take the following instructions: Wear suitable protective clothing, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: O=C1C(/O)=C(/O)C(=O)C(\O)=C1\O
(2)InChI: InChI=1/C6H4O6/c7-1-2(8)4(10)6(12)5(11)3(1)9/h7-8,11-12H
(3)InChIKey: DGQOCLATAPFASR-UHFFFAOYAF