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Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.
Can manufacture of phthalic anhydride from oxidation of naphthalene be improved?
Increasing the contact time in oxidation of naphthalene yields better quality of phthalic anhydride.
Which of the following statements is correct regarding the oxidation number of Oxygen? I. The oxidation number of Oxygen in most compounds is -2. II. When Oxygen is bonded to Fluorine in compounds like Oxygen difluoride and Dioxygen diflouride, the Oxygen is assigned an oxidation number of +2 and +2 respectively. III. In peroxide, an Oxygen atom is assigned an oxidation number of -1 and in Superoxide, each oxygen atom is assigned an oxidation number of -1/2.
__________ are produced by reacting polybasic acid (e.g. phthalic anhydride) with polyhydric alcohol (e.g., glycerol).
Molten phthalic anhydride is stored in a/an __________ vessel.
Phthalic anhydride is made by the
Phthalic anhydride is used
Manufacture of phthalic anhydride uses __________ as a catalyst.
Alkyd resin e.g., glyptal resin formed by phthalic anhydride and glycerene is not used