141-98-0Relevant articles and documents
High-value utilization method of sodium 2-mercaptoacetate in thionocarbamate production tail liquid
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Paragraph 0079-0080, (2021/08/11)
The invention belongs to wastewater treatment, and particularly discloses a high-value utilization method of sodium 2-mercaptoacetate in thionocarbamate production tail liquid. According to the method, sodium 2-mercaptoacetate in the thionocarbamate production tail liquid is used as a raw material and reacts with thiocyanate and a halogenating reagent to obtain the S-carboxyethyl-N-alkanoyl dithiocarbamate. The method is simple to operate and high in efficiency, solves the problem that the sodium 2-mercaptoacetate in the thionocarbamate production tail liquid is difficult to recover, and can realize high-value utilization of the sodium 2-mercaptoacetate.
Method for utilizing byproduct 2-sodium thioglycollate in production process of thionocarbamate
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Paragraph 0070-0070, (2019/12/25)
The invention belongs to wastewater treatment and in particular discloses a method for utilizing a byproduct 2-sodium thioglycollate in the production process of thionocarbamate. The method comprisesthe following steps: by taking a byproduct 2-sodium thioglycollate in the production process of thionocarbamate as a raw material, enabling the byproduct to react with a halogenation reagent so as toobtain alkyl thioether acetic acid; performing esterification on the alkyl thioether acetic acid with methanol so as to obtain alkyl thioether methyl acetate; and further enabling the alkyl thioethermethyl acetate to react with hydroxylamine hydrochloride, so as to obtain alkyl thioether ethyl hydroximic acid. By adopting the method, the problem that the byproduct 2-sodium thioglycollate in a process of thionocarbamate is hard to recycle can be solved, the utilization rate of the byproduct is increased, and the environment can be protected.
Method for producing thionocarbamate and dibenzyl disulfide
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Paragraph 0057-0059, (2017/06/02)
The invention discloses a method for producing thionocarbamate and dibenzyl disulfide. The method comprises the following steps: carrying out an esterification reaction on alkyl xanthate and benzyl halide to obtain alkyl benzyl xanthate; carrying out an aminolysis reaction on the alkyl benzyl xanthate and fatty amine to obtain a thionocarbamate and benzyl mercaptan mixture; and carrying out an oxidation reaction on the thionocarbamate and benzyl mercaptan mixture and hydrogen peroxide, and carrying out liquid-solid separation to obtain a solid which is the dibenzyl disulfide product and a liquid, and allowing the liquid to stand for oil and water layering in order to obtain an oil phase which is the thionocarbamate product. The dibenzyl disulfide product and thionocarbamate product obtained through the method have high yield and high purity, and the method has the advantages of easiness in separation of the products in the preparation process, environmental protection, high atom economy property, low production cost, and easiness in realization of industrial production.