Accession Number : ADA297373

Title :   NonCyanide Strippers to Replace Cyanide Strippers. Volume 3.

Descriptive Note : Final rept. Oct 89-Sep 90,

Corporate Author : IDAHO NATIONAL ENGINEERING LAB IDAHO FALLS

Personal Author(s) : Argyle, M. D. ; Cowan, R. L. ; Hudman, G. L. ; Close, T. A. ; Fox, R. V.

PDF Url : ADA297373

Report Date : 07 JUL 1994

Pagination or Media Count : 343

Abstract : This report presents the results of an Idaho National Engineering Laboratory (INEL) study of three electrolytic silver strippers that were tested in addition to three new immersion nickel strippers. Two nickel strippers successfully completed field testing last year. Frederick Gumm's CELOP 204 and Electrochemicals, Nickel-Sol were placed in service in the plating shop at Kelly AFB July through September 1990. This research has yielded at least one formulation (containing ethylenediamine sodium m-nitrobenzenesulfate, nitric acid, sodium nitrate, and ammonium thiocyanate) worthy of field testing. The formulation is for stripping electrolytic nickel. Other formulations, especially those for stripping electroless nickel, need further investigative work. A byproduct of the field test stripping process above is redwater in the waste stream. An investigation was unable to identify the chemical species responsible for the colored water. The report recommends (1) that at least one generic nickel stripper formulation be field tested, (2) one of the silver strippers 1(McGean-Rohco's Rostrip 999-SP) be implemented at the ALC, and (3) further attempts be made to discover the source of the redwater in the waste stream. jg p.3

Descriptors :   *CYANIDES, CHEMICALS, WATER, FORMULATIONS, FIELD TESTS, ELECTROCHEMISTRY, COLORS, AMMONIUM COMPOUNDS, NICKEL, WASTES, ELECTROLYTES, SULFATES, NITRIC ACID, ELECTROLESS PLATING, IMMERSION, SHOPS(WORK AREAS), SILVER, STREAMS, NITROBENZENES, PLATING, ELECTROLYSIS, THIOCYANATES, ETHYLENEDIAMINE, SODIUM NITRATES.

Subject Categories : Inorganic Chemistry
      Organic Chemistry
      Physical Chemistry
      Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE