JPS5654212A - Preparation of hydrazine hydrate - Google Patents
Preparation of hydrazine hydrateInfo
- Publication number
- JPS5654212A JPS5654212A JP13026279A JP13026279A JPS5654212A JP S5654212 A JPS5654212 A JP S5654212A JP 13026279 A JP13026279 A JP 13026279A JP 13026279 A JP13026279 A JP 13026279A JP S5654212 A JPS5654212 A JP S5654212A
- Authority
- JP
- Japan
- Prior art keywords
- hydrazine hydrate
- sulphate
- ammonia
- hydrazine
- ammonium sulphate
- 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.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the hydrazine hydrate easily by maintaining the ammonia concn. to a predetermined value and carrying out the distillation at a predetermined temp. in preparing hydrazine hydrate.
CONSTITUTION: In a method for preparing the hydrazine hydrate by reacting hydrazine sulphate and ammonia in the presence of water, the ammonia concn. in a reaction medium is maintained at 25wt% or more always. Thereby, the solubility of ammonium sulphate is extremely lowered and the separation thereof becomes easily. As the hydrazine sulphate, for example, monohydrazine sulphate is used and ammonia is a liquid ammonia or the like. The amount of water is pref. about 20mol or less against one mole of a hydrazine component. After precipitated and crystallized ammonium sulphate is removed, the filtrate is distilled at 180°C or less, pref., at 75W150°C. Moreover, a washing liquid of ammonium sulphate and a kettle residue after the hydrazine hydrate is distilled are recirculated to a reaction medium and reused.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13026279A JPS5654212A (en) | 1979-10-09 | 1979-10-09 | Preparation of hydrazine hydrate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13026279A JPS5654212A (en) | 1979-10-09 | 1979-10-09 | Preparation of hydrazine hydrate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5654212A true JPS5654212A (en) | 1981-05-14 |
JPS6212165B2 JPS6212165B2 (en) | 1987-03-17 |
Family
ID=15030057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13026279A Granted JPS5654212A (en) | 1979-10-09 | 1979-10-09 | Preparation of hydrazine hydrate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5654212A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60193623A (en) * | 1984-03-16 | 1985-10-02 | Mitsubishi Heavy Ind Ltd | Changing method of resin and color for injection molding machine |
JPS60196319A (en) * | 1984-03-19 | 1985-10-04 | Mitsubishi Heavy Ind Ltd | Changing method of resin and color of injection molding machine |
JPH02252517A (en) * | 1989-03-28 | 1990-10-11 | Toyo Mach & Metal Co Ltd | Purging method for injection molding machine |
JP2008133179A (en) * | 2006-11-01 | 2008-06-12 | Mitsubishi Gas Chem Co Inc | Method of recovering ammonia |
-
1979
- 1979-10-09 JP JP13026279A patent/JPS5654212A/en active Granted
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60193623A (en) * | 1984-03-16 | 1985-10-02 | Mitsubishi Heavy Ind Ltd | Changing method of resin and color for injection molding machine |
JPH0433614B2 (en) * | 1984-03-16 | 1992-06-03 | Mitsubishi Jukogyo Kk | |
JPS60196319A (en) * | 1984-03-19 | 1985-10-04 | Mitsubishi Heavy Ind Ltd | Changing method of resin and color of injection molding machine |
JPH0433615B2 (en) * | 1984-03-19 | 1992-06-03 | Mitsubishi Jukogyo Kk | |
JPH02252517A (en) * | 1989-03-28 | 1990-10-11 | Toyo Mach & Metal Co Ltd | Purging method for injection molding machine |
JPH0529536B2 (en) * | 1989-03-28 | 1993-04-30 | Toyo Machinery & Metal | |
JP2008133179A (en) * | 2006-11-01 | 2008-06-12 | Mitsubishi Gas Chem Co Inc | Method of recovering ammonia |
Also Published As
Publication number | Publication date |
---|---|
JPS6212165B2 (en) | 1987-03-17 |
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