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TETRAHYDROXY-p-BENZOQUINONE AR

Indicator for sulphate titration.
Tetrahydroxy-1,4-benzoquinone; Tetroquinone

COAs

Packings

1 g (00001)

5 g (00005)

1CLVI00055 1GBA000015
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Article No. 06220 Grade AR
Purity 98.5% CAS No. 319-89-1
Molecular Formula C6H4O6 Molecular Weight 172.10
H.S. Code 2933.9990 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour Bluish black crystalline
Odour Penetrating odour Melting point/ Freezing point [°C] > 300 °C
Vapour density 5.9 Solubility in water [% weight] Slightly soluble in water

Specifications

Appearance Dark green to dark red to black powder to crystal Assay (on dried basis) Min 98.5%
Loss on drying Max 18.0%

Safety Information and Hazard Symbols

Risk Statement: 36/37/38
 Safety Statement: 26-36
Revision Date: 22-Dec-2025

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