CN103387520A - Preparation method of guandine thiocyanate - Google Patents

Preparation method of guandine thiocyanate Download PDF

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Publication number
CN103387520A
CN103387520A CN2012101382540A CN201210138254A CN103387520A CN 103387520 A CN103387520 A CN 103387520A CN 2012101382540 A CN2012101382540 A CN 2012101382540A CN 201210138254 A CN201210138254 A CN 201210138254A CN 103387520 A CN103387520 A CN 103387520A
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China
Prior art keywords
guanidine thiocyanate
preparation
thiocyanate
guandine
filtering
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Pending
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CN2012101382540A
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Chinese (zh)
Inventor
李荣富
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Individual
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Individual
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Priority to CN2012101382540A priority Critical patent/CN103387520A/en
Publication of CN103387520A publication Critical patent/CN103387520A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a preparation method of guandine thiocyanate, and belongs to the chemical field. The preparation method of guandine thiocyanate is characterized by comprising the following processes: dissolving, filtering, dehydration and crystallization. The method provided by invention has advantages of simple and practical process and reasonable principle; and the guandine thiocyanate prepared by the method has good quality, high purity and is highly praised by users.

Description

The preparation method of guanidine thiocyanate
Technical field
The present invention relates to a kind of production method of guanidine thiocyanate, belong to chemical field.
Background technology
Guanidine thiocyanate can be used as biochemical reagents, and medicine intermediate is used for the oil prodution industry degreasing, and in daily-use chemical industry, as strong fat degradation agents, present production technique, the product purity that obtains are not very high, and in use, some is very high to the purity requirement of guanidine thiocyanate.
Summary of the invention
Purpose of the present invention: overcome the preparation method's of existing guanidine thiocyanate deficiency, the invention provides a kind of preparation method that can access the guanidine thiocyanate of higher degree.
Technical scheme: a kind of preparation method of guanidine thiocyanate is characterized in that having following technical process:
A, being 2:1 with weight ratio, Guanidinium carbonate and ammonium sulfate are put into reactor, and reaction is 2 hours under 40-90 ℃, obtains the guanidine thiocyanate crude product;
B, dissolving, at normal temperatures, in the ratio of 0.6:1, that the guanidine thiocyanate crude product is water-soluble;
C, filtration, remove the impurity such as raw material and reaction by-product with the method for filtering;
D, dehydration, at high temperature dewater the mother liquor after filtering;
E, crystallization, solution is cooling, and condensing crystal has obtained highly purified guanidine thiocyanate.
Advantage of the present invention: features simple and practical process, principle is reasonable, the guanidine thiocyanate of the inventive method preparation, quality is good, and purity is high, deeply is highly commended by customers.
Embodiments of the invention
A, being 2:1 with weight ratio, Guanidinium carbonate and ammonium sulfate are put into reactor, and reaction is 2 hours under 55 ℃, obtains the guanidine thiocyanate crude product;
B, dissolving, at normal temperatures, in the ratio of 0.6:1, that the guanidine thiocyanate crude product is water-soluble;
C, filtration, remove the impurity such as raw material and reaction by-product with the method for filtering;
D, dehydration, at high temperature dewater the mother liquor after filtering;
E, crystallization, solution is cooling, and condensing crystal has obtained highly purified guanidine thiocyanate.

Claims (1)

1. the preparation method of a guanidine thiocyanate, is characterized in that having following technical process: A, being 2:1 with weight ratio, Guanidinium carbonate and ammonium sulfate are put into reactor, and reaction is 2 hours under 40-90 ℃, obtains the guanidine thiocyanate crude product; B, dissolving, at normal temperatures, in the ratio of 0.6:1, that the guanidine thiocyanate crude product is water-soluble; C, filtration, remove the impurity such as raw material and reaction by-product with the method for filtering; D, dehydration, at high temperature dewater the mother liquor after filtering; E, crystallization, solution is cooling, and condensing crystal has obtained highly purified guanidine thiocyanate.
CN2012101382540A 2012-05-07 2012-05-07 Preparation method of guandine thiocyanate Pending CN103387520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012101382540A CN103387520A (en) 2012-05-07 2012-05-07 Preparation method of guandine thiocyanate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012101382540A CN103387520A (en) 2012-05-07 2012-05-07 Preparation method of guandine thiocyanate

Publications (1)

Publication Number Publication Date
CN103387520A true CN103387520A (en) 2013-11-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012101382540A Pending CN103387520A (en) 2012-05-07 2012-05-07 Preparation method of guandine thiocyanate

Country Status (1)

Country Link
CN (1) CN103387520A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114057610A (en) * 2021-11-30 2022-02-18 湖北省宏源药业科技股份有限公司 Production method of high-purity guanidine thiocyanate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114057610A (en) * 2021-11-30 2022-02-18 湖北省宏源药业科技股份有限公司 Production method of high-purity guanidine thiocyanate

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Application publication date: 20131113