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Melting point: −73.1 °C (−99.6 °F; 200.1 K) Boiling point: ... Acetic anhydride, or ethanoic anhydride, is the chemical compound with the formula (CH 3 CO) 2 O.
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 ...
Acetic acid can never be truly water-free in an atmosphere that contains water, so the presence of 0.1% water in glacial acetic acid lowers its melting point by 0.2 °C. [ 9 ] A common symbol for acetic acid is AcOH (or HOAc), where Ac is the pseudoelement symbol representing the acetyl group CH 3 −C(=O)− ; the conjugate base , acetate ( CH ...
Melting point: 184 to 186 °C (363 to 367 °F; 457 to 459 K) ... In the laboratory, it can be easily synthesized from anthranilic acid and acetic anhydride.
Melting point: 76 to 77 °C (169 to 171 °F; 349 to 350 K) Boiling point: 265.5 °C (509.9 °F; 538.6 K) ... (in the form of an acid anhydride), such as with acetic ...
Acetyl chloride was first prepared in 1852 by French chemist Charles Gerhardt by treating potassium acetate with phosphoryl chloride. [4]Acetyl chloride is produced in the laboratory by the reaction of acetic acid with chlorodehydrating agents such as phosphorus trichloride (PCl 3), phosphorus pentachloride (PCl 5), sulfuryl chloride (SO 2 Cl 2), phosgene, or thionyl chloride (SOCl 2).
Melting point: 283 to 286 °C (541 to 547 °F; 556 to 559 K) ... it can be prepared by dehydration of pyromellitic acid using acetic anhydride. [2] Reactions
Other electrophilic aromatic substitution reactions can also be promoted with trifluoroacetic anhydride, including nitration, sulfonation and nitrosylation. [2] Similar to acetic anhydride, trifluoroacetic anhydride can be used as a dehydrating agent and as an activator for the Pummerer rearrangement. [4]