GB675548A - Improvements in or relating to the preparation of a product containing an alkali metal acid cyanamide - Google Patents

Improvements in or relating to the preparation of a product containing an alkali metal acid cyanamide

Info

Publication number
GB675548A
GB675548A GB27919/50A GB2791950A GB675548A GB 675548 A GB675548 A GB 675548A GB 27919/50 A GB27919/50 A GB 27919/50A GB 2791950 A GB2791950 A GB 2791950A GB 675548 A GB675548 A GB 675548A
Authority
GB
United Kingdom
Prior art keywords
alkali metal
cyanamide
water
calcium cyanamide
product containing
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
GB27919/50A
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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
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 American Cyanamid Co filed Critical American Cyanamid Co
Publication of GB675548A publication Critical patent/GB675548A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00—Cyanogen; Compounds thereof
    • C01C3/16—Cyanamide; Salts thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

A defoliant product containing an alkali metal acid cyanamide is prepared by heating a mixture of calcium cyanamide, e.g. lime nitrogen, water, and alkali metal, e.g. sodium or potassium, hydroxide at 90-110 DEG C for at least one hour, the molecular ratio of water to calcium cyanamide being 1-2 : 1 and the molecular ratio of alkali metal hydroxide to calcium cyanamide being at least 1 : 1. A wetting agent may be added, e.g. turkey red oil, alkylated aryl sulphonates, and the product of reacting long chain olefins with nitrosyl chloride and preparing an addition compound with sodium sulphite. The reaction mixture may be continuously advanced through a reaction zone, e.g. a pug mill maintained at 100 DEG C by a steam jacket, with agitation to drive off excess water, and a substantially dry product is recovered after 1 1/2 hours reaction time.
GB27919/50A 1949-11-23 1950-11-15 Improvements in or relating to the preparation of a product containing an alkali metal acid cyanamide Expired GB675548A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US675548XA 1949-11-23 1949-11-23

Publications (1)

Publication Number Publication Date
GB675548A true GB675548A (en) 1952-07-09

Family

ID=22076784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27919/50A Expired GB675548A (en) 1949-11-23 1950-11-15 Improvements in or relating to the preparation of a product containing an alkali metal acid cyanamide

Country Status (1)

Country Link
GB (1) GB675548A (en)

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