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  • BSI
    BS EN ISO 3251:2019 Paints, varnishes and plastics. Determination of non-volatile-matter content
    Edition: 2019
    $316.70
    / user per year

Description of BS EN ISO 3251:2019 2019

This document specifies a method for determining the non-volatile-matter content by mass of paints, varnishes, binders for paints and varnishes, polymer dispersions and condensation resins such as phenolic resins (resols, novolak solutions etc.).

The method is also applicable to formulated dispersions containing fillers, pigments and other auxiliaries (e.g. thickeners, film-forming agents).

NOTE 1

The non-volatile-matter content of a product is not an absolute quantity but depends upon the temperature and period of heating used for the determination. Consequently, when using this method, only relative and not true values for non-volatile-matter content are obtained owing to solvent retention, thermal decomposition and evaporation of low molecular mass constituents. The method is therefore primarily intended for testing different batches of the same type of product.

NOTE 2

This method is suitable for synthetic rubber lattices, provided heating for a specific period of time is considered appropriate ( ISO 124 specifies heating until the loss in mass of a 2 g test portion following successive periods of heating is less than 0,5 mg).

NOTE 3

In-house methods for determining non-volatile matter often include drying with infrared or microwave radiation. Standardization of such methods is not possible, since they are not generally applicable. Several polymer compositions tend to decompose during such treatment and therefore give incorrect results.



Standard NumberBS EN ISO 3251:2019
TitlePaints, varnishes and plastics. Determination of non-volatile-matter content
StatusDefinitive
Publication Date2019-06-18
ReplacesBS EN ISO 3251:2008
Identical National Standard OfISO 3251, EN ISO 3251
DescriptorsPhenolic resins, Binding agents, Varnishes, Chemical analysis and testing, Determination of content, Non-volatile matter determination, Paints, Plastics, Dispersions (chemical)
ICS87.040 Paints and varnishes, 87.060.20 Binders, 83.080.01 Plastics in general
CommitteeSTI/10
ISBN978 0 539 00916 3
PublisherBSI
Pages18

The following editions for this book are also available...

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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