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Title: Method and composition for testing for the presence of an alkali metal

Abstract

A method and composition for detecting the presence of an alkali metal on the surface of a body such as a metal plate, tank, pipe or the like is provided. The method comprises contacting the surface with a thin film of a liquid composition comprising a light-colored pigment, an acid-base indicator, and a nonionic wetting agent dispersed in a liquid carrier comprising a minor amount of water and a major amount of an organic solvent selected from the group consisting of the lower aliphatic alcohols, ketones and ethers. Any alkali metal present on the surface in elemental form or as an alkali metal hydroxide or alkali metal carbonate will react with the acid-base indicator to produce a contrasting color change in the thin film, which is readily discernible by visual observation or automatic techniques.

Inventors:
 [1]
  1. (Canoga Park, CA)
Issue Date:
OSTI Identifier:
863768
Patent Number(s):
4244693
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
DOE Contract Number:  
AT(04-3)-824
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; composition; testing; presence; alkali; metal; detecting; surface; plate; tank; pipe; provided; comprises; contacting; film; liquid; comprising; light-colored; pigment; acid-base; indicator; nonionic; wetting; agent; dispersed; carrier; minor; amount; water; major; organic; solvent; selected; consisting; aliphatic; alcohols; ketones; ethers; elemental; form; hydroxide; carbonate; react; produce; contrasting; color; change; readily; discernible; visual; observation; automatic; techniques; color change; metal plate; major amount; comprises contacting; composition comprising; method comprises; organic solvent; alkali metal; metal hydroxide; minor amount; liquid carrier; wetting agent; metal carbonate; visual observation; aliphatic alcohol; method comprise; solvent selected; metal carbon; liquid composition; aliphatic alcohols; /436/

Citation Formats

Guon, Jerold. Method and composition for testing for the presence of an alkali metal. United States: N. p., 1981. Web.
Guon, Jerold. Method and composition for testing for the presence of an alkali metal. United States.
Guon, Jerold. Thu . "Method and composition for testing for the presence of an alkali metal". United States. https://www.osti.gov/servlets/purl/863768.
@article{osti_863768,
title = {Method and composition for testing for the presence of an alkali metal},
author = {Guon, Jerold},
abstractNote = {A method and composition for detecting the presence of an alkali metal on the surface of a body such as a metal plate, tank, pipe or the like is provided. The method comprises contacting the surface with a thin film of a liquid composition comprising a light-colored pigment, an acid-base indicator, and a nonionic wetting agent dispersed in a liquid carrier comprising a minor amount of water and a major amount of an organic solvent selected from the group consisting of the lower aliphatic alcohols, ketones and ethers. Any alkali metal present on the surface in elemental form or as an alkali metal hydroxide or alkali metal carbonate will react with the acid-base indicator to produce a contrasting color change in the thin film, which is readily discernible by visual observation or automatic techniques.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

Patent:

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