RO85250B1 - Procedeu de obtinere a pentaclorfenolatului de sodiu - Google Patents
Procedeu de obtinere a pentaclorfenolatului de sodiuInfo
- Publication number
- RO85250B1 RO85250B1 RO108619A RO10861982A RO85250B1 RO 85250 B1 RO85250 B1 RO 85250B1 RO 108619 A RO108619 A RO 108619A RO 10861982 A RO10861982 A RO 10861982A RO 85250 B1 RO85250 B1 RO 85250B1
- Authority
- RO
- Romania
- Prior art keywords
- water
- hexachlorobenzene
- methanol
- bar
- pressure
- Prior art date
Links
- HCJLVWUMMKIQIM-UHFFFAOYSA-M sodium;2,3,4,5,6-pentachlorophenolate Chemical compound [Na+].[O-]C1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl HCJLVWUMMKIQIM-UHFFFAOYSA-M 0.000 title abstract 3
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 5
- CKAPSXZOOQJIBF-UHFFFAOYSA-N hexachlorobenzene Chemical compound ClC1=C(Cl)C(Cl)=C(Cl)C(Cl)=C1Cl CKAPSXZOOQJIBF-UHFFFAOYSA-N 0.000 abstract 4
- 239000002904 solvent Substances 0.000 abstract 3
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 238000004821 distillation Methods 0.000 abstract 2
- 238000001914 filtration Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000005904 alkaline hydrolysis reaction Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 238000010992 reflux Methods 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Prezenta inventie se refera la un procedeu de obtinere a pentaclorfenolatului de sodiu prin hidroliza alcalina a hexaclorbenzenului în mediu de metanol, raportul molar între hexaclorbenzen si NaOH fiind de 1: 2,2...2,5 la temperatura de 130...150 degree C de preferinta 140 degree C si sub presiune, caracterizat prin aceea ca, în scopul valorificarii produselor reziduale, rezultate la fabricarea solventilor clorurati si a simplificarii procesului tehnologic prin obtinerea directa a produsului, reactia dintre hexaclorbenzenului obtinut ca reziduu si hidroxidul de sodiu are loc în prezenta metanolului si a apei demineralizate în raport în greutate metanol: apa de 14...18,8...1 si la presiunea de 11...1 bar, de preferinta 12,5 bar, solventul fiind recuperat prin distilarea masei de reactie în trei etape sub vacuum la presiunea de 0,2...0,35 bar, în prima etapa distilîndu-se circa 75% din solventul de zat, dupa care se adauga apa demineralizata în raport molar hexaclor benzen : apa 1:80...100 si se redistila amestecul apa si metanol, reactia fiind urmata apoi de filtrarea sub vacuum la temperatura de 65...400g/l prin distilare cu reflux, racirea acestuia la 0...5 degree C si filtrarea pentaclorfenolului de sodiu cristalizat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO108619A RO85250B1 (ro) | 1982-09-14 | 1982-09-14 | Procedeu de obtinere a pentaclorfenolatului de sodiu |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RO108619A RO85250B1 (ro) | 1982-09-14 | 1982-09-14 | Procedeu de obtinere a pentaclorfenolatului de sodiu |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO85250A2 RO85250A2 (ro) | 1984-09-29 |
| RO85250B1 true RO85250B1 (ro) | 1984-10-30 |
Family
ID=20112016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO108619A RO85250B1 (ro) | 1982-09-14 | 1982-09-14 | Procedeu de obtinere a pentaclorfenolatului de sodiu |
Country Status (1)
| Country | Link |
|---|---|
| RO (1) | RO85250B1 (ro) |
-
1982
- 1982-09-14 RO RO108619A patent/RO85250B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| RO85250A2 (ro) | 1984-09-29 |
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