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Priority to DD16550672ApriorityCriticalpatent/DD98698A1/xx
Publication of DD98907A5publicationCriticalpatent/DD98907A5/xx
Publication of DD98698A1publicationCriticalpatent/DD98698A1/xx
C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
C07C45/78—Separation; Purification; Stabilisation; Use of additives
C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
C07C45/84—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation by azeotropic distillation
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
C07C51/42—Separation; Purification; Stabilisation; Use of additives
C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation