GB151596A - An improved process for the conversion of cyanamide salts into urea - Google Patents

An improved process for the conversion of cyanamide salts into urea

Info

Publication number
GB151596A
GB151596A GB25336/20A GB2533620A GB151596A GB 151596 A GB151596 A GB 151596A GB 25336/20 A GB25336/20 A GB 25336/20A GB 2533620 A GB2533620 A GB 2533620A GB 151596 A GB151596 A GB 151596A
Authority
GB
United Kingdom
Prior art keywords
urea
conversion
improved process
cyanamide
acid
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
GB25336/20A
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.)
CHIMIQUES POUR L IND SOC ET
Original Assignee
CHIMIQUES POUR L IND SOC ET
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 CHIMIQUES POUR L IND SOC ET filed Critical CHIMIQUES POUR L IND SOC ET
Publication of GB151596A publication Critical patent/GB151596A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • C07C273/06—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from cyanamide or calcium cyanamide

Landscapes

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

Abstract

Urea, or salts thereof, are obtained by gradually adding a powdered cyanamide salt, such as calcium cyanamide, to an acid which is vigorously stirred throughout the addition; suitable acids are sulphuric, phosphoric, or carbonic acids. When using carbonic acid the later stage of the reaction is greatly facilitated by the addition of sulphuric acid.
GB25336/20A 1919-09-26 1920-09-02 An improved process for the conversion of cyanamide salts into urea Expired GB151596A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH151596X 1919-09-26

Publications (1)

Publication Number Publication Date
GB151596A true GB151596A (en) 1921-12-02

Family

ID=4406840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25336/20A Expired GB151596A (en) 1919-09-26 1920-09-02 An improved process for the conversion of cyanamide salts into urea

Country Status (1)

Country Link
GB (1) GB151596A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571926A (en) * 1948-10-18 1951-10-16 Murray Arthur Preparation of organic materials

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571926A (en) * 1948-10-18 1951-10-16 Murray Arthur Preparation of organic materials

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