1、BRITISH STANDARD BS EN ISO 3262-4:1998 Extenders for paints Specifications and methods of test Part 4: Whiting The European Standard ENISO3262-4:1998 has the status of a British Standard ICS 87.060.10BSENISO3262-4:1998 This British Standard, having been prepared under the directionof the Sector Boar
2、d forMaterials and Chemicals, waspublished under the authorityof the Standards Board and comes into effect on 15 September 1998 BSI 05-1999 ISBN 0 580 30496 5 National foreword This British Standard is the English language version of ENISO3262-4:1998. It is identical with ISO3262-4:1998. Together wi
3、th the other Parts of BSENISO 3262, it will supersede BS1795:1976 which is declared obsolescent. The UK participation in its preparation was entrusted to Technical Committee STI/1. Pigments, which has the responsibility to: aid enquirers to understand the text; present to the responsible internation
4、al/European committee any enquiries on the interpretation, or proposals for change, and keep the UKinterests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secret
5、ary. Cross-references Attention is drawn to the fact that CEN and CENELEC standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications re
6、ferred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of
7、a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, pa
8、ge 2, the ISO title page, page ii, pages 1 and 2, aninside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.
9、Date CommentsBSENISO3262-4:1998 BSI05-1999 i Contents Page National foreword Inside front cover Foreword 2 Foreword ii Text of ISO 3262-4 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3262-4 July 1998 ICS 87.060.10 Descriptors: See ISO document English version Extenders for paint
10、s Specifications and methods of test Part 4: Whiting (ISO 3262-4:1998) Matires de charge pour peintures Spcifications et mthodes dessai Partie 4: Craie (ISO 3262-4:1998) Fllstoffe fr Beschichtungsstoffe Anforderungen und Prfverfahren Teil 4: Kreide (ISO 3262-4:1998) This European Standard was approv
11、ed by CEN on 21 June 1998. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national sta
12、ndards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified t
13、o the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and Unit
14、ed Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO
15、3262-4:1998 EENISO3262-4:1998 BSI05-1999 2 Foreword The text of the International Standard ISO3262-4:1998 has been prepared by Technical Committee ISO/TC35 “Paints and varnishes” in collaboration with Technical Committee CEN/TC298 “Pigments and extenders”, the secretariat of which is held by DIN. Th
16、is European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January1999, and conflicting national standards shall be withdrawn at the latest by January 1999. According to the CEN/CENELEC Internal Regulations, t
17、he national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United King
18、dom. Endorsement notice The text of the International Standard ISO3262-4:1998 has been approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). Contents Page Foreword 2 1 Scope 1 2 Normative references 1
19、3 Definition 1 4 Requirements and test methods 1 5 Sampling 2 6 Determination of matter insoluble in hydrochloric acid 2 7 Test report 2 Annex ZA (normative) Normative references to international publications with their relevant European publications Inside back cover Table 1 Essential requirements
20、1 Table 2 Conditional requirements 2ENISO3262-4:1998 ii BSI 05-1999 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technica
21、l committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely wit
22、h the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of t
23、he member bodies casting a vote. International Standard ISO3262-4 was prepared by Technical Committee ISO/TC35, Paints and varnishes, Subcommittee SC2, Pigments and extenders. Together with the other parts (see below), this part of ISO3262 cancels and replaces ISO3262:1975, which has been technicall
24、y revised. Part 1 comprises the definition of the term extender and a number of test methods that are applicable to most extenders, whilst part 2 and the following parts specify requirements and, where appropriate, particular test methods for individual extenders. At present, the following parts of
25、ISO 3262 are published or in preparation, under the general title Extenders for paints Specifications and methods of test: Part 1: Introduction and general test methods; Part 2: Barytes (natural barium sulfate); Part 3: Blanc fixe; Part 4: Whiting; Part 5: Natural crystalline calcium carbonate; Part
26、 6: Precipitated calcium carbonate; Part 7: Dolomite; Part 8: Natural clay; Part 9: Calcined clay; Part 10: Natural talc/chlorite in lamellar form; Part 11: Natural talc, in lamellar form, containing carbonates; Part 12: Muscovite-type mica; Part 13: Natural quartz (ground); Part 14: Cristobalite; P
27、art 15: Vitreous silica; Part 16: Aluminium hydroxides; Part 17: Precipitated calcium silicate; Part 18: Precipitated sodium aluminium silicate; Part 19: Precipitated silica; Part 20: Fumed silica; Part 21: Silica sand (unground natural quartz); Part 22: Diatomaceous earth (kieselguhr). Descriptors:
28、 Paints, extenders, calcium carbonates, specifications, materials specifications, tests.ENISO3262-4:1998 BSI05-1999 1 1 Scope This part of ISO3262 specifies requirements and corresponding methods of test for whiting. 2 Normative references The following standards contain provisions which, through re
29、ference in this text, constitute provisions of this part of ISO3262. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO3262 are encouraged to investigate the possibility of applying the most recent
30、 editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 787-2:1981, General methods of test for pigments and extenders Part 2: Determination of matter volatile at 105 C. ISO 787-3:1979, General methods of test for pigments
31、 and extenders Part 3: Determination of matter soluble in water Hot extraction method. ISO 787-7:1981, General methods of test for pigments and extenders Part 7: Determination of residue on sieve Water method Manual procedure. ISO 787-8:1979, General methods of test for pigments and extenders Part 8
32、: Determination of matter soluble in water Cold extraction method. ISO 787-9:1981, General methods of test for pigments and extenders Part 9: Determination of pH value of an aqueous suspension. ISO 787-14:1973, General methods of test for pigments Part 14: Determination of resistivity of aqueous ext
33、ract. ISO 842:1984, Raw materials for paints and varnishes Sampling. ISO 3262-1:1997, Extenders for paints Specifications and methods of test Part1:Introduction and general test methods. ISO 3696:1987, Water for analytical laboratory use Specification and test methods. 3 Definition For the purposes
34、of this part of ISO 3262, the following definition applies: 3.1 whiting a natural calcium carbonate derived from chalk, a sedimentary rock of soft texture originating from the Cretaceous period. It is characterized by microcrystalline calcitic crystals (up to 1 4m across). Chalk is formed mainly fro
35、m shells and skeletons of small maritime organisms, e.g. foraminifera and coccoliths. Residual shell fragments are an essential characteristic of chalk the term “whiting” shall not be used to describe forms of naturally occurring or precipitated calcium carbonate other than chalk 4 Requirements and
36、test methods For whiting complying with this part of ISO3262, the essential requirements are specified in Table 1 and the conditional requirements are listed in Table 2. Table 1 Essential requirements Characteristic Unit Requirement Test method Grade A Grade B CaCO 3content, min. % (m/m) 98 95 ISO 3
37、262-1 Matter volatile at 105 C, max. % (m/m) 0,4 ISO 787-2 Loss on ignition, max. % (m/m) 46 a ISO 3262-1 Matter soluble in water, max. % (m/m) 0,5 ISO 787-3 or ISO 787-8 b pH value of aqueous suspension 8 to 9,5 a ISO 787-9 Matter insoluble in hydrochloric acid, max. % (m/m) 2 5 Seeclause 6 a These
38、 values do not take account of the effect on the result of any surface treatment. b Method to be agreed between the interested parties.ENISO3262-4:1998 2 BSI05-1999 Table 2 Conditional requirements 5 Sampling Take a representative sample of the product to be tested, as described in ISO842. 6 Determi
39、nation of matter insoluble in hydrochloric acid 6.1 Reagents During the analysis, use only reagents of recognized analytical grade and only water of at least grade3 purity as defined in ISO3696. 6.1.1 Hydrochloric acid, approximately 25 % (m/m), . 1,125g/ml. 6.2 Apparatus Use ordinary laboratory app
40、aratus and glassware, together with the following: 6.2.1 Membrane filter, pore size 0,8 4m. 6.2.2 Air oven, capable of being maintained at (105 2) C. 6.3 Procedure Weigh, to the nearest 0,1mg, approximately 10g (m 0 ) of the test sample into a 600ml beaker. Add50ml of water and, carefully, approxima
41、tely50ml of hydrochloric acid (6.1.1). Cover the beaker with a watch glass and boil the solution for 15min. Dry the membrane filter (6.2.1) in the air oven(6.2.2) at (105 2) C to constant mass, cool in a desiccator to room temperature and weigh it to the nearest 0,1mg (m 1 ). Then filter the solutio
42、n through it. Wash the residue on the filter eight times with hot distilled water. Dry the residue on the filter in the air oven at (105 2) C for about 1h. Allow to cool in a desiccator to room temperature and weigh to the nearest 0,1mg (m 2 ). 6.4 Expression of results Calculate the matter insolubl
43、e in hydrochloric acid w(Ml HCl ), expressed as a percentage by mass, using the equation where 7 Test report The test report shall contain at least the following information: a) all details necessary to identify the product tested; b) a reference to this part of ISO3262 (ISO 3262-4); c) the results
44、of the tests and whether or not the product complies with the relevant specification limits; d) any deviation from the test methods specified; e) the dates of the tests. Characteristic Unit Requirement Test method Residue on 45 4m sieve % (m/m) To be agreed between the interested parties ISO 787-7 P
45、article size distribution (instrumental method) % (m/m) To be agreed between the interested parties a Colour ISO 3262-1 Lightness To be agreed between the interested parties To be agreed between the interested parties b Resistivity of aqueous extract 7m ISO 787-14 a A general description of a sedime
46、ntation method using X-ray absorption is given in EN725-5:1996, Advanced technical ceramics Methods of test for ceramic powders Part 5: Determination of the particle size distribution. b Test method in preparation. m 0 is the mass, in grams, of the test portion; m 1 is the mass, in grams, of the dri
47、ed membrane filter; m 2 is the mass, in grams, of the dried membrane filter plus the residue.ENISO3262-4:1998 BSI05-1999 Annex ZA (normative) Normative references to international publications with their relevant European publications This European Standard incorporates by dated or undated reference
48、, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated
49、in it by amendment or revision. For undated references the latest edition of the publication referred to applies. Publication Year Title EN Year ISO 787-2 1981 General methods of test for pigments and extenders Part 2: Determination of matter volatile at 105 degrees C EN ISO 787-2 1995 ISO 787-3 1979 General methods of test for pigments and extenders Part 3: Determination of matter soluble in water Hot extraction method EN ISO 787-3 1995 ISO 787
