JPS5654212A - Preparation of hydrazine hydrate - Google Patents

Preparation of hydrazine hydrate

Info

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
Application number
JP13026279A
Other languages
Japanese (ja)
Other versions
JPS6212165B2 (en
Inventor
Tomiya Isshiki
Yoshiyuki Aoki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co Inc
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 Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Priority to JP13026279A priority Critical patent/JPS5654212A/en
Publication of JPS5654212A publication Critical patent/JPS5654212A/en
Publication of JPS6212165B2 publication Critical patent/JPS6212165B2/ja
Granted legal-status Critical Current

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  • 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
JP13026279A 1979-10-09 1979-10-09 Preparation of hydrazine hydrate Granted JPS5654212A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (7)

* Cited by examiner, † Cited by third party
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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