AT23355B - Process for the preparation of durable hydrosulfites. - Google Patents
Process for the preparation of durable hydrosulfites.Info
- Publication number
- AT23355B AT23355B AT23355DA AT23355B AT 23355 B AT23355 B AT 23355B AT 23355D A AT23355D A AT 23355DA AT 23355 B AT23355 B AT 23355B
- Authority
- AT
- Austria
- Prior art keywords
- hydrosulfites
- durable
- preparation
- anhydrous
- zinc
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 3
- GRWZHXKQBITJKP-UHFFFAOYSA-N dithionous acid Chemical class OS(=O)S(O)=O GRWZHXKQBITJKP-UHFFFAOYSA-N 0.000 title description 4
- 238000002360 preparation method Methods 0.000 title description 3
- 238000012986 modification Methods 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- YVCKGVFNZUJVBS-UHFFFAOYSA-L [Na+].[Zn+2].[O-]S(=O)S([O-])=O Chemical compound [Na+].[Zn+2].[O-]S(=O)S([O-])=O YVCKGVFNZUJVBS-UHFFFAOYSA-L 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- PENRVBJTRIYHOA-UHFFFAOYSA-L zinc dithionite Chemical compound [Zn+2].[O-]S(=O)S([O-])=O PENRVBJTRIYHOA-UHFFFAOYSA-L 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Medicinal Preparation (AREA)
Description
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Verfahren zur Darstellung haltbarer Hydrosulfite.
In dem zweiten Zusatz-Patente zum Stamm-Patente Nr. 21088 ist ein Vorfahren zur Darstellung haltbarer, kreistallwasserfreier Hydrosulfite beschrieben, welches darin besteht,
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Es wurde weiterhin gezeigt, dass man an Stelle der festen, krir'allwasserhaItigon Hydiosuiite bezw. ihrer Pasten auch ihre konzentrierten Lösungen verwenden und dieselben mit Ililfe von konzentriertem Ätzalkali bei erhöhter Temperatur in die kristallwasserfreienHydrosulfiteüberführenkann.
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tritt, wie wir im Beispiel n das Patentes Nr. 21319 noch des näheren erläutert haben, in einer Operation Umwandlung in Alkalihydrosultit und Entwässerung ein.
Es hat sich nun ergeben, dass man kristallwasserfreies Natriumhydrosulfit direkt
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wasserfreiesNatriumhydrosulfit.
Beispiel III. 10 kg Zinknatriumhydrosulfit, wie es z. B. erhalten werden kann durch Aussalzen einer Zinkhydrosulfitlösung mit Kochsalz, Abfiltrieren, Waschen mit Alkohol und Trockenen bei höherer Temperatur im Vakuum, werden mit 35 1 : g Natron-
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verrührt. Nach Lösung des Zinks wird die ziukhattigc Natronlauge durch Behandln mit A ! koho ! entfernt. Das im Vaknm getrocknote Produkt ist kristallwasserfreies Natriumhydrosulfit.
<Desc / Clms Page number 1>
Process for the preparation of durable hydrosulfites.
In the second additional patents to the parent patent No. 21088, an ancestor for the preparation of durable, circular anhydrous hydrosulfites is described, which consists in
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It was also shown that instead of the solid, krir'allwasserhaItigon Hydiosuiite respectively. of their pastes also use their concentrated solutions and convert them into the anhydrous hydrosulfites with the aid of concentrated caustic alkali at elevated temperature.
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occurs, as we have explained in more detail in example n of patent No. 21319, in one operation conversion to alkali hydrosultite and dehydration.
It has now been found that anhydrous sodium hydrosulfite can be obtained directly
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anhydrous sodium hydrosulfite.
Example III. 10 kg of zinc sodium hydrosulfite, as it is, for. B. can be obtained by salting out a zinc hydrosulfite solution with sodium chloride, filtering off, washing with alcohol and drying at a higher temperature in a vacuum, with 35 1: g of sodium
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stirred. After the zinc has been dissolved, the caustic soda solution is treated with A! koho! away. The product dried in vacuo is anhydrous sodium hydrosulfite.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT21088T | 1904-04-05 | ||
| AT23355T | 1905-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT23355B true AT23355B (en) | 1906-03-10 |
Family
ID=25597690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT23355D AT23355B (en) | 1904-04-05 | 1905-05-22 | Process for the preparation of durable hydrosulfites. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT23355B (en) |
-
1905
- 1905-05-22 AT AT23355D patent/AT23355B/en active
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