GB1118744A - Preparation of hydrazine hydrate - Google Patents

Preparation of hydrazine hydrate

Info

Publication number
GB1118744A
GB1118744A GB2882465A GB2882465A GB1118744A GB 1118744 A GB1118744 A GB 1118744A GB 2882465 A GB2882465 A GB 2882465A GB 2882465 A GB2882465 A GB 2882465A GB 1118744 A GB1118744 A GB 1118744A
Authority
GB
United Kingdom
Prior art keywords
ketone
methyl
hydrazine hydrate
aliphatic
hydrazone
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.)
Expired
Application number
GB2882465A
Inventor
Heinrich Kohnen
Rudolf Mundil
Jobst Steinbrecht
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Priority to GB2882465A priority Critical patent/GB1118744A/en
Publication of GB1118744A publication Critical patent/GB1118744A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
    • C01B21/16—Hydrazine; Salts thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Hydrazine hydrate is produced by fractionating an aqueous ketazine and/or hydrazone soln. (derived from hydrazine and an aliphatic ketone having 4-8 carbon atoms) under an excess pressure of 1-50 atms., and at a sump temp. of 100-250 DEG C., removing the ketone from the top of the column and the hydrazine hydrate as an aqueous soln. from the sump. The aliphatic ketone may be methyl ethyl ketone, methyl isopropyl ketone, methyl isobutyl ketone, methyl n-butyl ketone, 4-methyl pentanone-2 or ethyl amyl ketone. The aqketazine and/or hydrazone may be decomposed in the presence of 5-25% aliphatic ketone and 2-10% hydrazine hydrate.ALSO:An aliphatic ketone of 4-8 C atoms is produced by fractionating an aqueous ketazine and/or hydrazone soln. (derived from hydrazine and an aliphatic ketone having 4-8 carbon atoms) under an excess pressure of 1-50 atms., and at a sump temp. of 100-250 DEG C., removing the ketone from the top of the column and the hydrazine hydrate as an aqueous soln. from the sump. The aliphatic ketone may be methyl ethyl ketone, methyl isopropyl ketone, methyl isobutyl ketone, methyl n-butyl ketone, 4-methyl pentanone-2 or ethyl amyl ketone. The aq. ketazine and/or hydrazone may be decomposed in the presence of 5-25% aliphatic ketone and 2-10% hydrazine hydrate.
GB2882465A 1965-07-07 1965-07-07 Preparation of hydrazine hydrate Expired GB1118744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2882465A GB1118744A (en) 1965-07-07 1965-07-07 Preparation of hydrazine hydrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2882465A GB1118744A (en) 1965-07-07 1965-07-07 Preparation of hydrazine hydrate

Publications (1)

Publication Number Publication Date
GB1118744A true GB1118744A (en) 1968-07-03

Family

ID=10281744

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2882465A Expired GB1118744A (en) 1965-07-07 1965-07-07 Preparation of hydrazine hydrate

Country Status (1)

Country Link
GB (1) GB1118744A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105384655A (en) * 2015-10-26 2016-03-09 宜宾海丰和锐有限公司 Method for removing impurities in system for hydrolyzing hydrazine hydrate by ketazine process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105384655A (en) * 2015-10-26 2016-03-09 宜宾海丰和锐有限公司 Method for removing impurities in system for hydrolyzing hydrazine hydrate by ketazine process

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