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ISO 11400:1992

Nickel, ferronickel and nickel alloys — Determination of phosphorus content — Phosphovanadomolybdate molecular absorption spectrometric method ISO 11400:1992

Publication date:   Sep 3, 1992

95.99 Withdrawal of Standard   Dec 15, 2021

General information

95.99 Withdrawal of Standard   Dec 15, 2021

ISO

ISO/TC 155 Nickel and nickel alloys

International Standard

77.100   Ferroalloys | 77.120.40   Nickel, chromium and their alloys

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Scope

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.

Life cycle

NOW

WITHDRAWN
ISO 11400:1992
95.99 Withdrawal of Standard
Dec 15, 2021

REVISED BY

PUBLISHED
ISO 11400:2021