ISO-11400 › Historical Revision Information
Nickel, Ferronickel & Nickel Alloys - Determination of Phosphorus Content - Phosphovanadom
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Phosphorus content can be determined in the range of 0,000 5 % (m/m) to 0,05 % (m/m). As, Cr, Hf, Nb, Si, Ta, Ti, W interfere, but the interferences can be avoided. The principle is dissolution of a test portion in a mixture of nitric and hydrochloric acids, fuming with perchloric acid, removal of chromium, complexation of silicon, conversion of phosphorus to phosphovanadomolybdic acid, extraction of this compound.
To find similar documents by classification:
77.100 (Ferroalloys Including classification, designation, sampling, chemical analysis, etc.)
77.120.40 (Nickel, chromium and their alloys)
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Document Number
ISO 11400:1992
Revision Level
1ST EDITION
Status
Superseded
Publication Date
Sept. 15, 1992
Committee Number
ISO TC 155/SC 3