VPI 260

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[Shell] A brand name for a vapor phase corrosion inhibitor. VPI 260 is composed of Dicyclohexyl amine nitrite. It is used as a corrosion inhibitor for Silver, Steel and Aluminum. VPI 260 forms a thin protective layer on the surface of the metal which minimizes the transmission of moisture and oxygen. It is used in antitarnish wrapping papers.

Synonyms and Related Terms

dicyclohexyl amine nitrite

Physical and Chemical Properties

  • Vapor pressure = 0.00013 at 21C
  • pH of condensate = 10.0

Resources and Citations

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 67
  • L. Selwyn, 'Historical Silver: Storage, Display and Tarnish Removal', J.IIC-GC, 15, 1990