GB714496A - Improvements in formic acid compositions and the inhibition of corrosion of metals by formic acid - Google Patents

Improvements in formic acid compositions and the inhibition of corrosion of metals by formic acid

Info

Publication number
GB714496A
GB714496A GB938051A GB938051A GB714496A GB 714496 A GB714496 A GB 714496A GB 938051 A GB938051 A GB 938051A GB 938051 A GB938051 A GB 938051A GB 714496 A GB714496 A GB 714496A
Authority
GB
United Kingdom
Prior art keywords
formic acid
corrosion
inhibition
metals
chromium
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
GB938051A
Inventor
Donald William Broad
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB938051A priority Critical patent/GB714496A/en
Publication of GB714496A publication Critical patent/GB714496A/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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/04—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention comprises formic acid containing an amount of phosphoric acid of between 0.001 per cent and 3 per cent by weight of the formic acid. The corrosion of chromium-nickel austenitic steels and chromium-bearing ferritic-corrosion-resisting steels by formic acid is inhibited by the addition of the phosphoric acid (see Group XVIII).
GB938051A 1951-04-23 1951-04-23 Improvements in formic acid compositions and the inhibition of corrosion of metals by formic acid Expired GB714496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB938051A GB714496A (en) 1951-04-23 1951-04-23 Improvements in formic acid compositions and the inhibition of corrosion of metals by formic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB938051A GB714496A (en) 1951-04-23 1951-04-23 Improvements in formic acid compositions and the inhibition of corrosion of metals by formic acid

Publications (1)

Publication Number Publication Date
GB714496A true GB714496A (en) 1954-09-01

Family

ID=9870862

Family Applications (1)

Application Number Title Priority Date Filing Date
GB938051A Expired GB714496A (en) 1951-04-23 1951-04-23 Improvements in formic acid compositions and the inhibition of corrosion of metals by formic acid

Country Status (1)

Country Link
GB (1) GB714496A (en)

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