GB825929A - Production of chlorocyanuric acids - Google Patents
Production of chlorocyanuric acidsInfo
- Publication number
- GB825929A GB825929A GB3369755A GB3369755A GB825929A GB 825929 A GB825929 A GB 825929A GB 3369755 A GB3369755 A GB 3369755A GB 3369755 A GB3369755 A GB 3369755A GB 825929 A GB825929 A GB 825929A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tri
- reaction
- solution
- cyanurate
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/30—Only oxygen atoms
- C07D251/36—Only oxygen atoms having halogen atoms directly attached to ring nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/28—Only halogen atoms, e.g. cyanuric chloride
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Di- and/or tri-chlorocyanuric acid is produced by intimately admixing an aqueous solution of di-alkali metal cyanurate and/or tri-sodium cyanurate and at least the stoichiometric proportion of gaseous chlorine in an aqueous reaction medium at a temperature not exceeding 25 DEG C., the conditions of mixing being such that the pH is maintained below 4.5, preferably 3-4.5. The di- and/or tri-chlorocyanuric acid is isolated from the reaction mixture in commercial operation after a residence time in the reaction zone sufficiently limited to produce a yield of at least 75%, preferably 85% to prevent appreciable decomposition. In the production of tri-chlorocyanuric acid the pH of the reaction mixture is more preferably 3-4.3. It is preferred to employ a 5-20%, more preferably a 10-15%, stoichiometric excess of chlorine. Alkali metals specified are sodium and potassium. The reaction temperature is preferably 10-25 DEG C. (which temperature is preferably maintained by cooling the cyanurate solution to -5 DEG to 10 DEG C.), but temperatures as low as -9 DEG C. may be employed. A continuous process in which the reaction product is periodically or continuously removed from the reaction zone is preferably employed, and the volume of solution in the reaction zone is preferably maintained substantially constant. The solid chlorocyanuric acid produced may be removed from solution by filtration, decantation or centrifugation with less than 40%, preferably with less than 15% of water, and dried to a water content of less than 4%, preferably below 1.5%. Specification 634,801 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3369755A GB825929A (en) | 1955-11-24 | 1955-11-24 | Production of chlorocyanuric acids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3369755A GB825929A (en) | 1955-11-24 | 1955-11-24 | Production of chlorocyanuric acids |
Publications (1)
Publication Number | Publication Date |
---|---|
GB825929A true GB825929A (en) | 1959-12-23 |
Family
ID=10356283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3369755A Expired GB825929A (en) | 1955-11-24 | 1955-11-24 | Production of chlorocyanuric acids |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB825929A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1110165B (en) * | 1960-01-26 | 1961-07-06 | Basf Ag | Process for the preparation of dichloroisocyanuric acid and mixtures containing same |
FR2402650A1 (en) * | 1977-09-08 | 1979-04-06 | Chlor Chem Ltd | CONTINUOUS PROCESS FOR THE PRODUCTION OF DI- OR TRICHLOROCYANURIC ACID BY CHLORINATION OF SODIUM CYANURATE |
-
1955
- 1955-11-24 GB GB3369755A patent/GB825929A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1110165B (en) * | 1960-01-26 | 1961-07-06 | Basf Ag | Process for the preparation of dichloroisocyanuric acid and mixtures containing same |
FR2402650A1 (en) * | 1977-09-08 | 1979-04-06 | Chlor Chem Ltd | CONTINUOUS PROCESS FOR THE PRODUCTION OF DI- OR TRICHLOROCYANURIC ACID BY CHLORINATION OF SODIUM CYANURATE |
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