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ISO/DIS 4691

Iron ores — Determination of titanium — Diantipyrylmethane spectrophotometric method ISO/DIS 4691

General information

40.20   DIS ballot initiated: 12 weeks   Sep 11, 2026

ISO

ISO/TC 102/SC 2 Chemical analysis

International Standard

73.060.10   Iron ores

Scope

ISO 4691:2009 specifies a spectrophotometric method using diantipyrylmethane for the determination of the mass fraction of titanium in iron ores.
ISO 4691:2009 is applicable to a mass-fraction range of 0,02 % to 4,0 % of titanium in natural iron ores, and iron ore concentrates and agglomerates including sinter products.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 4691:2009

NOW

IN_DEVELOPMENT
ISO/DIS 4691
40.20 DIS ballot initiated: 12 weeks
Sep 11, 2026




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