AT48532B - Process for the preparation of hydrosulphites free of water of crystallization. - Google Patents

Process for the preparation of hydrosulphites free of water of crystallization.

Info

Publication number
AT48532B
AT48532B AT48532DA AT48532B AT 48532 B AT48532 B AT 48532B AT 48532D A AT48532D A AT 48532DA AT 48532 B AT48532 B AT 48532B
Authority
AT
Austria
Prior art keywords
crystallization
water
free
drying
hydrosulfites
Prior art date
Application number
Other languages
German (de)
Original Assignee
Basf Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Basf Ag filed Critical Basf Ag
Application granted granted Critical
Publication of AT48532B publication Critical patent/AT48532B/en

Links

Description

  

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1. Verfahren zur Darstellung von kristallwasserfreien   Hydrosulfiten   unter Verwendung eines Vakuums, dadurch gekennzeichnet, dass man   knstallwasserhaltige   Hydrosulfite bei höherer Temperatur derart trocknet, dass das Kristallwasser unmittelbar in Dampfform austritt.



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1. A process for the preparation of hydrosulfites free of water of crystallization using a vacuum, characterized in that hydrosulfites containing crystalline water are dried at a higher temperature in such a way that the water of crystallization emerges directly in vapor form.

Claims (1)

2. Verfahren zum Haltbarmachen von kristallwasserfreien Natriumhydrosulfiten, dadurch gekennzeichnet, dass man die durch Trocknen von kristallwasserhaltigem Natriumhydrosulfit gemäss dem in Anspruch l beschriebenen Verfahren durch Trocknen erhältlichen wasserfreien EMI3.2 letztere den kristallwasserhaltigen Hydrosulfiten vor dem Trocknen oder während desselben beimischt. 2. A process for preserving sodium hydrosulfites free of water of crystallization, characterized in that the anhydrous obtainable by drying sodium hydrosulfite containing water of crystallization according to the process described in claim l by drying is obtained EMI3.2 the latter is admixed with the hydrosulfites containing water of crystallization before drying or during the same. 3. Abänderung des Verfahrens nach Anspruch 2, darin bestehend, dass man die durch Trocknen von kristallwasserhaltigeni Natriumhydrosulfit erhältlichen wasserfreien Produkte mit organischen Mitteln, welche Hydrosulfite nicht zersetzen oder bezw. und mit konzen- trierter Alkalilauge ansteigt oder innig vermischt. 3. Modification of the method according to claim 2, consisting in that the anhydrous products obtainable by drying sodium hydrosulfite containing water of crystallization with organic agents which do not decompose or bezw hydrosulfites. and increases or is intimately mixed with concentrated alkali. 4. Abänderung des Verfahrens nach Anspruch 2 und 3, darin bestehend, dass man die durch EMI3.3 4. Modification of the method according to claim 2 and 3, consisting in that the through EMI3.3
AT48532D 1909-02-08 1909-02-08 Process for the preparation of hydrosulphites free of water of crystallization. AT48532B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT48532T 1909-02-08

Publications (1)

Publication Number Publication Date
AT48532B true AT48532B (en) 1911-06-26

Family

ID=3569098

Family Applications (1)

Application Number Title Priority Date Filing Date
AT48532D AT48532B (en) 1909-02-08 1909-02-08 Process for the preparation of hydrosulphites free of water of crystallization.

Country Status (1)

Country Link
AT (1) AT48532B (en)

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