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Boiling point: 295 °C (563 °F; 568 K) sublimates Solubility in water. ... Phthalic anhydride is the organic compound with the formula C 6 H 4 (CO) 2 O.
In organic chemistry, phthalic acid is an aromatic dicarboxylic acid, with formula C6H4(CO2H)2 and structure HO (O)C− C 6 H 4− C (O)OH. Although phthalic acid is of modest commercial importance, the closely related derivative phthalic anhydride is a commodity chemical produced on a large scale. [4] Phthalic acid is one of three isomers of ...
Phthalimide is the organic compound with the formula C 6 H 4 (CO) 2 NH. It is the imide derivative of phthalic anhydride. It is a sublimable white solid that is slightly soluble in water but more so upon addition of base. It is used as a precursor to other organic compounds as a masked source of ammonia. [2]
Phthalates are produced industrially by the acid catalysed reaction of phthalic anhydride with excess alcohol.The synthesis of diethyl phthalate is illustrative of this: . The properties of the phthalate can be varied by changing the alcohol, [12] allowing for an almost limitless range of products, although only around 30 are, or have been, commercially important.
Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) K f (°C⋅kg/mol) Data source; ... Acetic Anhydride: 139.0 [6] Ethylene Dichloride: 1.25 83.5 −35 [7 ...
Dimethyl phthalate is manufactured commercially via the esterification of phthalic anhydride with methanol. The reaction can be catalysed by a strong acid, such as sulfuric acid; various lewis acids may be used as an alterative, including complexes of titanium, zirconium or tin. Excess methanol is used to ensure complete conversion, with the ...
Boiling point: 217.97 °C (424.35 °F; 491.12 K) ... 2 in the presence of vanadium pentoxide as catalyst gives phthalic anhydride: C 10 H 8 + 4.5 O 2 → C 6 H 4 ...
Boiling point: 295 °C (563 °F; 568 K) Solubility in water. ... Diethyl phthalate is produced by the reaction of ethanol with phthalic anhydride, ...