GB1042726A - Stabilization of methyl chloroform - Google Patents

Stabilization of methyl chloroform

Info

Publication number
GB1042726A
GB1042726A GB3323963A GB3323963A GB1042726A GB 1042726 A GB1042726 A GB 1042726A GB 3323963 A GB3323963 A GB 3323963A GB 3323963 A GB3323963 A GB 3323963A GB 1042726 A GB1042726 A GB 1042726A
Authority
GB
United Kingdom
Prior art keywords
methyl chloroform
nitromethane
amyl alcohol
tertiary amyl
dioxolane
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
GB3323963A
Inventor
Kenneth Frederick Bursack
John Henry Rains
Paul Allen Bussard
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.)
Vulcan Materials Co
Original Assignee
Vulcan Materials 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 Vulcan Materials Co filed Critical Vulcan Materials Co
Publication of GB1042726A publication Critical patent/GB1042726A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
    • C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
    • C23G5/028—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons
    • C23G5/02854—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons characterised by the stabilising or corrosion inhibiting additives
    • C23G5/02883—Nitrogen-containing compounds
    • C23G5/02887—Nitro-compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C17/00—Preparation of halogenated hydrocarbons
    • C07C17/38—Separation; Purification; Stabilisation; Use of additives
    • C07C17/42—Use of additives, e.g. for stabilisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Stabilized methyl chloroform compositions comprise methyl chloroform containing between 0.1 and 5% nitromethane and 0.1 to 10% tertiary amyl alcohol based on the weight of methyl chloroform. Preferably the ratio of nitromethane to amyl alcohol is between 1:1 and 1:4. When the methyl chloroform contains a minor amount of moisture the above compositions contain 0.2 to 3% nitromethane, 0.5 to 5% tertiary amyl alcohol and 0.1 to 5% of 1,3-dioxolane. The invention further comprises a method of stabilizing methyl chloroform from a liquid mixture thereof with higher boiling compounds, e.g. chlorinated hydrocarbons and hydrocarbon oils, which comprises adding to said mixture 0.01 to 5% of 1,3-dioxolane based on the weight of methyl chloroform, vaporizing the mixture in a fractional distillation zone, recovering a dioxolane containing methyl chloroform fraction from said zone and adding to said recovered fraction 0.5 to 10% of tertiary amyl alcohol and 0.1 to 5% of nitromethane based on the weight of the methyl chloroform fraction. The spent compositions may also be reconstituted by distillation and subsequent addition of tertiary amyl alcohol and nitromethane. The compositions are used for degreasing metals, e.g. aluminium, iron, and tin-plate.
GB3323963A 1963-09-04 1963-08-22 Stabilization of methyl chloroform Expired GB1042726A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEV0024530 1963-09-04

Publications (1)

Publication Number Publication Date
GB1042726A true GB1042726A (en) 1966-09-14

Family

ID=7581256

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3323963A Expired GB1042726A (en) 1963-09-04 1963-08-22 Stabilization of methyl chloroform

Country Status (2)

Country Link
DE (1) DE1518167A1 (en)
GB (1) GB1042726A (en)

Also Published As

Publication number Publication date
DE1518167A1 (en) 1969-02-13

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