ISO 5796:2000

Rubber compounding ingredients — Natural calcium carbonate — Test methods

Publication date: 7 sht 2000

General information

Current stage: 90.20 Effective date: 15 jan 2025

Originator: ISO

Owner: ISO/TC 45/SC 3

Type: International Standard

ICS: 83.040.20

Gjuha: anglisht frëngjisht

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Statusi: Publikuar

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Scope

1.1 This International Standard specifies the methods to be used for the evaluation of natural calcium carbonate
(chalk or limestone) ground to a dry powder for use in the rubber industry.
NOTE 1 Classification of natural calcium carbonate according to fineness and chemical purity and typical physical and
chemical properties for use in the rubber industry are given in informative annex D.
NOTE 2 This International Standard does not cover calcium carbonates prepared by precipitation from solution.
1.2 There are two sets of analytical methods listed in this International Standard. In the body of the text (4.8.2 to
4.8.4), the traditional spectrophotometric methods are given; these are obsolescent, time-consuming and use a
chlorinated solvent. It is recommended that these methods be phased out and replaced by the atomic absorption
methods listed in annexes A, B and C.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 5796:1990

NOW

PUBLISHED
ISO 5796:2000
90.20 Standard under periodical review
15 jan 2025

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