ISO 7780:1998 PDF

Rubbers and rubber latices — Determination of manganese content — Sodium periodate photometric methods

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Title (English):

ISO 7780:1998

Rubbers and rubber latices — Determination of manganese content — Sodium periodate photometric methods

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 10
Publication date:: July 23, 1998
Edition:: ISO IS 7780 edition 2 version 1
ICS:: 83.040.10

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Technical details

Technical committee: ISO/TC 45/SC 3 - Raw materials (including latex) for use in the rubber industry
SKU: ISO 7780:1998

Abstract

Overview

ISO 7780:1998 - Rubbers and rubber latices - Determination of manganese content - Sodium periodate photometric methods - defines two photometric procedures for measuring total manganese in raw rubbers, latices and compounded/vulcanized rubbers. Both methods oxidize manganese to permanganate with sodium periodate and determine concentration by spectrophotometric measurement at ~525 nm. The standard addresses sample preparation, reagents, instrumentation and calibration required for reliable manganese determination in elastomers.

Key Topics and Requirements

Two validated methods
- General method: Suitable for compounded or vulcanized rubbers, especially when samples contain heavy loadings of inert fillers (silicates, CaCO3) or ingredients that form insoluble phosphates. Involves ashing/fusion (platinum crucible or fluoroborate fusion) or acid digestion when chlorine is present.
- Restricted method: Shorter route for raw rubbers, latices and compounds with light filler loadings (typically

Related standards

Other ISO standards

Overview

Key Topics and Requirements

Two validated methods
- General method: Suitable for compounded or vulcanized rubbers, especially when samples contain heavy loadings of inert fillers (silicates, CaCO3) or ingredients that form insoluble phosphates. Involves ashing/fusion (platinum crucible or fluoroborate fusion) or acid digestion when chlorine is present.
- Restricted method: Shorter route for raw rubbers, latices and compounds with light filler loadings (typically

ISO 7780:1998 PDF

Technical details

Abstract

Overview

Key Topics and Requirements

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Abstract

Overview

Key Topics and Requirements

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