ISO 473:2019 pdf download

ISO 473:2019 pdf download.Lithopone pigments — General requirements and methods of testing
1 Scope
This document specifies the requirements and the corresponding test methods for three types of lithopone pigments.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 385, Laboratory glassware — Burettes
ISO 648, Laboratory glassware — Single-volume pipettes
ISO 787-1, General methods of test for pigments and extenders — Part 1: Comparison of colour of pigments
ISO 787-2, General methods of test for pigments and extenders — Part 2: Determination of matter volatile at 105 °C
ISO 787-3, General methods of test for pigments and extenders — Part 3: Determination of matter soluble in water — Hot extraction method
ISO 787-4, General methods of test for pigments and extenders — Part 4: Determination of acidity or alkalinity of the aqueous extract
ISO 787-5, General methods of test for pigments and extenders — Part 5: Determination of oil absorption value
ISO 787-7, General methods of test for pigments and extenders — Part 7: Determination of residue on sieve — Water method — Manual procedure
ISO 787-17, General methods of test for pigments and extenders — Comparison of lightening power of white pigments
ISO 1042, Laboratory glassware — One-mark volumetric flasks
ISO 3696, Water for analytical laboratory use — Specification and test methods
ISO 15528, Paints, varnishes and raw materials for paints and varnishes — Sampling
ISO 18451-1, Pigments, dyestuffs and extenders — Terminology — Part 1: General terms
ISO 18451-2, Pigments, dyestuffs and extenders — Terminology — Part 2: Classification of colouring materials according to colouristic and chemical aspects
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 18451-1, ISO 18451-2 and the following apply.
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3.1 lithopone 20 %
white pigment consisting of approximately 20 % zinc sulphide (ZnS), the balance being made up mainly of barium sulphate (BaS0 4 )
Note 1 to entry: The material is a calcined co-precipitate.
3.2 lithopone 30 %
white pigment consisting of zinc sulphide (ZnS) and barium sulphate (BaS0 4 ) in approximately equimolecular proportions
Note 1 to entry: The material is a calcined co-precipitate.
3.3 lithopone 60 %
white pigment consisting of approximately 60 % zinc sulphide (ZnS), the balance being made up mainly of barium sulphate (BaS0 4 )
Note 1 to entry: The material is a calcined co-precipitate.
4 Marking and labelling
Lithopone with a content of about 20 %, 30 % or 60 % of zinc sulphide should be marked or labelled as such.
5 Required characteristics and their tolerances
Lithopone pigments shall have the characteristics shown in Table 1.
The sample agreed between the interested parties, to which reference is made in Table 1, shall be one and the same and shall comply with all the requirements specified for the pigment under test.