DE2252561A1 - Verfahren zum reinigen von silvex - Google Patents
Verfahren zum reinigen von silvexInfo
- Publication number
- DE2252561A1 DE2252561A1 DE19722252561 DE2252561A DE2252561A1 DE 2252561 A1 DE2252561 A1 DE 2252561A1 DE 19722252561 DE19722252561 DE 19722252561 DE 2252561 A DE2252561 A DE 2252561A DE 2252561 A1 DE2252561 A1 DE 2252561A1
- Authority
- DE
- Germany
- Prior art keywords
- silvex
- salt
- dioxin
- alkali metal
- polar
- 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.)
- Pending
Links
- ZLSWBLPERHFHIS-UHFFFAOYSA-N Fenoprop Chemical compound OC(=O)C(C)OC1=CC(Cl)=C(Cl)C=C1Cl ZLSWBLPERHFHIS-UHFFFAOYSA-N 0.000 title claims description 83
- 238000000034 method Methods 0.000 title claims description 39
- 238000004140 cleaning Methods 0.000 title claims description 5
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 claims description 57
- 238000000605 extraction Methods 0.000 claims description 37
- -1 alkali metal salt Chemical class 0.000 claims description 36
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 36
- 229910052783 alkali metal Inorganic materials 0.000 claims description 31
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 150000003839 salts Chemical class 0.000 claims description 21
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 17
- 150000001412 amines Chemical class 0.000 claims description 16
- 239000012454 non-polar solvent Substances 0.000 claims description 14
- 239000002798 polar solvent Substances 0.000 claims description 14
- 239000007791 liquid phase Substances 0.000 claims description 12
- 239000002253 acid Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000012736 aqueous medium Substances 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 238000000622 liquid--liquid extraction Methods 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 238000000638 solvent extraction Methods 0.000 claims description 3
- 239000002585 base Substances 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical class [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 230000001376 precipitating effect Effects 0.000 claims 1
- 239000012071 phase Substances 0.000 description 26
- 239000002904 solvent Substances 0.000 description 25
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 24
- 239000007788 liquid Substances 0.000 description 23
- SMYMJHWAQXWPDB-UHFFFAOYSA-N (2,4,5-trichlorophenoxy)acetic acid Chemical compound OC(=O)COC1=CC(Cl)=C(Cl)C=C1Cl SMYMJHWAQXWPDB-UHFFFAOYSA-N 0.000 description 22
- 239000000203 mixture Substances 0.000 description 20
- 239000000243 solution Substances 0.000 description 17
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 11
- 239000011541 reaction mixture Substances 0.000 description 11
- 238000004821 distillation Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000002156 mixing Methods 0.000 description 7
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- 150000002013 dioxins Chemical class 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000000706 filtrate Substances 0.000 description 2
- 230000002363 herbicidal effect Effects 0.000 description 2
- 239000004009 herbicide Substances 0.000 description 2
- 239000006193 liquid solution Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000003559 2,4,5-trichlorophenoxyacetic acid Substances 0.000 description 1
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 description 1
- 241000234295 Musa Species 0.000 description 1
- 241000611009 Nematalosa come Species 0.000 description 1
- PBCJIPOGFJYBJE-UHFFFAOYSA-N acetonitrile;hydrate Chemical compound O.CC#N PBCJIPOGFJYBJE-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- QGJOPFRUJISHPQ-NJFSPNSNSA-N carbon disulfide-14c Chemical compound S=[14C]=S QGJOPFRUJISHPQ-NJFSPNSNSA-N 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000003390 teratogenic effect Effects 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 231100000563 toxic property Toxicity 0.000 description 1
Classifications
-
- 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
- C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
-
- 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
- C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US00192299A US3840592A (en) | 1971-10-26 | 1971-10-26 | Separation of dioxin and 2,4,5-t from dioxin and 2,4,5-t-contaminated silvex |
| US00192309A US3840593A (en) | 1971-10-26 | 1971-10-26 | Separation of 2,4,5-t and 2,3,7,8-tetrachlorodibenzo-p-dioxin from 2-(2,4,5-trichlorophenoxy)propionic acid contaminated therewith |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2252561A1 true DE2252561A1 (de) | 1973-05-03 |
Family
ID=26887952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19722252561 Pending DE2252561A1 (de) | 1971-10-26 | 1972-10-26 | Verfahren zum reinigen von silvex |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE790558A (enExample) |
| DE (1) | DE2252561A1 (enExample) |
| FR (1) | FR2158290A1 (enExample) |
| GB (1) | GB1356896A (enExample) |
| NL (1) | NL7214524A (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2934300A1 (de) * | 1978-08-28 | 1980-03-06 | Ppg Industries Inc | Trichlorphenoxy-alkancarbonsaeuren, verfahren zu ihrer herstellung und sie enthaltende mittel zum behandeln von pflanzen |
-
0
- BE BE790558D patent/BE790558A/xx unknown
-
1972
- 1972-10-25 GB GB4929872A patent/GB1356896A/en not_active Expired
- 1972-10-26 FR FR7238009A patent/FR2158290A1/fr not_active Withdrawn
- 1972-10-26 NL NL7214524A patent/NL7214524A/xx unknown
- 1972-10-26 DE DE19722252561 patent/DE2252561A1/de active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2934300A1 (de) * | 1978-08-28 | 1980-03-06 | Ppg Industries Inc | Trichlorphenoxy-alkancarbonsaeuren, verfahren zu ihrer herstellung und sie enthaltende mittel zum behandeln von pflanzen |
| FR2434798A1 (fr) * | 1978-08-28 | 1980-03-28 | Ppg Industries Inc | Acides trichlorophenoxy alcanoiques exempts de dibenzo-p-dioxines chlorees, leur obtention et leur application a la regulation de la croissance des plantes |
Also Published As
| Publication number | Publication date |
|---|---|
| NL7214524A (enExample) | 1973-05-01 |
| FR2158290A1 (enExample) | 1973-06-15 |
| BE790558A (fr) | 1973-04-25 |
| GB1356896A (en) | 1974-06-19 |
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