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  • ASTM
    E342-11 Standard Test Method for Determination of Chromium Oxide in Chrome Ores by Permanganate Titrimetry
    Edition: 2011
    $91.10
    Unlimited Users per year

Description of ASTM-E342 2011

ASTM E342 - 11

Standard Test Method for Determination of Chromium Oxide in Chrome Ores by Permanganate Titrimetry

Active Standard ASTM E342 | Developed by Subcommittee: E01.02

Book of Standards Volume: 03.05




ASTM E342

Significance and Use

This test method is intended to be used for compliance with compositional specifications for chromium oxide content in chromium-bearing ores. It is assumed that all who use these procedures will be trained analysts capable of performing common laboratory procedures skillfully and safely. It is expected that work will be performed in a properly equipped laboratory and that proper waste disposal procedures will be followed. Appropriate quality control practices must be followed such as those described in Guide E882 .

1. Scope

1.1 This test method covers the determination of chromium oxide (Cr 2 O 3 ) in chrome ores in the compositional range from 25 % to 60 %.

Note 1As used in this test method, % refers to a mass fraction (wt/wt %) (g/100g).

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

D1193 Specification for Reagent Water

E50 Practices for Apparatus, Reagents, and Safety Considerations for Chemical Analysis of Metals, Ores, and Related Materials

E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials

E276 Test Method for Particle Size or Screen Analysis at No. 4 (4.75-mm) Sieve and Finer for Metal-Bearing Ores and Related Materials

E882 Guide for Accountability and Quality Control in the Chemical Analysis Laboratory


Keywords

chromium ores; chromium oxide content; permanganate titrimetry; titrimetry; Chrome ores; Chromium oxide content; Permanganate process


ICS Code

ICS Number Code 73.060.30 (Chromium ores)


DOI: 10.1520/E0342-11

ASTM International is a member of CrossRef.

ASTM E342

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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.
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