ISO 17895-2005 “Determination of Volatile Organic Compounds Content in Low VOC Latex Paints for Color and varnishing (tank VOC)”

A Preface
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International standards are drafted according to the rules given in Part 2 of the ISO/IEC Directive.

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ISO 17895 was developed by Technical Committee ISO/TC 35, Paints and varnishments.

ISO 17895-2005 “Determination of Volatile Organic Compounds Content in Low VOC Latex Paints for Color and varnishing (tank VOC)”

For health and environmental reasons, the requirements imposed by the authorities today include the assessment of the content of residual monomers and organic saturated volatiles, sometimes accurate to trace amounts.

This international standard is one of a series of standards dealing with the VOC content of paints, varices and related products: ISO 11890-1 (see bibliography) specifies the method for determining VOC content greater than 15% (by mass), ISO 11890-2 applies to VOC content between 0.1% and 15% (by mass).

This INTERNATIONAL standard describes a method for determining the VOC content between 0.01% and 0.1% (by mass). In contrast to ISO 11890-1 and ISO 11890-2, this standard applies to volatile organic compounds with boiling points up to 250°C.

1 Scope
This standard specifies a gas chromatographic method for the quantitative determination of volatile organic compound (VOC) content (i.e. the content of organic compounds with boiling points up to 250°C) in a low VOC content latex paint (tank VOC) under standard conditions (101,325 kPa). The method is suitable for VOC content ranging from 0.01% to 0.1% (by mass).

The main purpose of this method was to identify low VOC latex paints rather than conventional quality control.

2 Normative references
The following references are required for the application of this document. For dated references, only the cited version applies. For undated references, the new version of the reference (including any revisions) applies.

ISO 2811-1, Paints and varnishes — Determination of density — Part 1: Specific gravity bottle method

ISO 2811-2, Paints and varnishes — Determination of density — Part 2: immersion (plunge) method

ISO 2811-3, paints and varnishes — Determination of density — Part 3: oscillatory method

ISO 2811-4, paints and varnishes — Determination of density — Part 4: pressure cup method

ISO 3696, analytical laboratory water use – specifications and test methods

ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling

ISO 17895-2005 “Determination of Volatile Organic Compounds Content in Low VOC Latex Paints for Color and varnishing (tank VOC)”

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

3.1 Volatile Organic Compounds

Any organic liquid and/or solid that evaporates spontaneously at the prevailing temperature and pressure of the atmosphere with which it is in contact

Note 1: For current usage of the term VOC in the field of coatings, see Volatile Organic Compound content (VOC content).

Note 2: Under U.S. government legislation, the term VOC is limited to those compounds that are photochemically active in the atmosphere (see ASTM D 3960). Any other compounds are then defined as exempt compounds.

[Source: ISO 4618]

3.2 Volatile organic compound content

The quality of volatile organic compounds present in the coating material, determined under the specified conditions

Note 1: The nature and number of compounds to be considered will depend on the application area of the coating material. For each application area, limit values and determination or calculation methods are specified by regulation 1) or agreement.

[Source: ISO 4618]

3.3 Volatile organic compounds in the tank

Volatile organic compounds present in waterborne latex paint

3.4 Latex paint

The organic adhesive is a coating of water-based dispersion

[Source: ISO 4618]

3.5 Complete evaporation

Method of transferring VOC from liquid to gas phase in liquid sample

Note 1: Although a headspace injector with a diaphragm sealed vial is used to introduce the test portion of the gas phase into the column, the complete evaporation method differs significantly from conventional headspace analysis where equilibrium is established. Since the sample bottle contains a very small amount of sample, almost all VOC will enter the gas phase when heated to a certain temperature [3].

ISO 17895-2005 “Determination of Volatile Organic Compounds Content in Low VOC Latex Paints for Color and varnishing (tank VOC)”

3.6 Stock solution reference compound mixture

Mixtures prepared from pure substances for use in standard addition methods

Note 1: The concentration of the reference compound mixture in the stock solution is determined by the initial mass number of each component in the sample and its purity.

3.7 Multiple standard addition methods

Method for determining the VOC content of a mixture of reserve compounds by adding known amounts of reference compounds to a sample

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