Oxanhydride

CAS NO.: 5426-09-5

Molecular Formula: C8H6O4

Molecular Weight: 166.13

Chinese Name: exo-3,6-Epoxy-1,2,3,6-tetrahydrophthalic anhydride

English Name: 3a,4,7,7a-Tetrahydro-4,7-epoxyisobenzofuran-1,3-dione

Quality Standard: Enterprise Standard

Purity: ≥98%

Appearance: This product is a white or off-white crystalline powder, odorless, bitter taste, slightly irritating, and its aqueous solution shows an acidic reaction.

Solubility: This product is easily soluble in hot water, soluble in chloroform or acetone, and slightly soluble in ethanol.

Usage: Pharmaceutical intermediate, electronic and electrical composite materials

Assay: Precisely weigh 0.20g of this product, add 50ml of freshly boiled and cooled distilled water, heat to dissolve, cool, add 2 drops of phenolphthalein indicator, and titrate with sodium hydroxide titrant (0.1mol/L). Each 1ml of sodium hydroxide titrant (0.1mol/L) is equivalent to 8.26mg of C8H6O4.

Specification: 25kg/drum.

Storage: Store protected from light, sealed, and dry.

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