1、BRITISH STANDARD BS EN ISO 787-13:2002 General methods of test for pigments and extenders Part 13: Determination of water-soluble sulfates, chlorides and nitrates The European Standard EN ISO 787-13:2002 has the status of a British Standard ICS 87.060.10 BS EN ISO 787-13:2002 This British Standard,
2、having been prepared under the direction of the Materials and Chemicals Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 19 September 2002 BSI 19 September 2002 ISBN 0 580 40433 1 National foreword This British Standard is the
3、official English language version of EN ISO 787-13:2002. It is identical with ISO 787-13:2002. It supersedes BS 3483-C6:1974 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee STI/1, Pigments, which has the responsibility to: A list of organizations repr
4、esented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index
5、”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confe
6、r immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgat
7、e them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to v, a blank page, pages 1 to 4, the Annex ZA page, and a back cover. The BSI copyright date displayed in this document indi
8、cates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO78713 August2002 ICS87.060.10 SupersedesENISO78713:2001 Englishversion GeneralmethodsoftestforpigmentsandextendersPart13: Determinationofwatersoluble
9、sulfates,chloridesandnitrates (ISO78713:2002) Mthodesgnralesdessaidespigmentsetmatiresde chargePartie13:Determinationdessulfates,chlorureset nitratessolublesdansleau(ISO78713:2002) AllgemeinePrfverfahrenfrPigmenteundFllstoffeTeil 13:BestimmungderwasserlslichenSulfate,Chlorideund Nitrate(ISO78713:200
10、2) ThisEuropeanStandardwasapprovedbyCENon13June2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmay
11、beobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versi
12、ons. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESK
13、OMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO78713:2002EForeword Thisdocument(ENISO78713:2002)hasbeenpreparedbyTechnicalCommitteeISO/TC35 “Paintsandvarnishes“incollaborationwit
14、hTechnicalCommitteeCEN/TC298“Pigmentsand extenders“,thesecretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublication ofanidenticaltextorbyendorsement,atthelatestbyFebruary2003,andconflictingnational standardsshallbewithdrawnatthelatestbyFebruary2003.
15、 ThisdocumentsupersedesENISO78713:2001. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium, CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy, Luxembourg,Malta,Netherlan
16、ds,Norway,Portugal,Spain,Sweden,Switzerlandandthe UnitedKingdom. Endorsementnotice ThetextoftheInternationalStandardISO78713:2002hasbeenapprovedbyCENasa EuropeanStandardwithoutanymodifications. NOTENormativereferencestoInternationalStandardsarelistedinannexZA(normative). ENISO78713:2002 INTERNATIONA
17、L STANDARD ISO 787-13 Second edition 2002-08-01 Reference number ISO 787-13:2002(E) General methods of test for pigments and extenders Part 13: Determination of water-soluble sulfates, chlorides and nitrates Mthodes gnrales dessai des pigments et matires de charge Partie 13: Dtermination des sulfate
18、s, chlorures et nitrates solubles dans leauENISO78713:2002 ISO -7872:31)E(200 ii ISO 2002 Ar llithgr seresvde FDP dicslaimre This FDP fam elitnoc yt deddebme niayfep.seca In roccatiw ecnadA hycilop gnisnecil sebod, thf sim eliarp eb ytnieiv ro dewb detu sllah ton eb tidesselnu de tt ehyfepseca hwich
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21、ah a borpmel talerign to ti f si,dnuo saelpfni eorm teh tneCS laretercratai ta thserdda es igvne olebw. ISO 2002 Ar llieser sthgrvsselnU .de torehceps esiwfi,dei rap ont iht fos bupliactim noarper eb yro decudo tuzilina ni dey form b roy nasnaem y, tcelernahcem ro cinoicla, inclidung tohppocoying m
22、dnaicrfomli, tiwtuoh permini noiss wrtif gnirmo ietI rehSO ta tserdda eheb slow or SIsO memreb ydob in toc ehtnury fo tr ehtseuqeer. ISO copyrithg fofiec tsop esaCael 65 G 1121-HCeneva 02 Te.l + 22 14 10 947 11 Fax + 14 47 2290 9 74 E-liam copyrightsio.ch Web wwwsi.oc.h Prni detni Sztiwerldna ENISO7
23、8713:2002iiOSI 1-78732002:)E( ISO 2002 r llAithgs reservde iii Contents Page 1 Scope . 1 2 Normative reference . 1 3 Reagents 1 4 Apparatus . 2 5 Sampling . 2 6 Determination of sulfates 2 7 Determination of chlorides 3 8 Determination of nitrates 3 9 Test report 4 ENISO78713:2002iiiISO -7872:31)E(2
24、00 vi ISO 2002 Ar llithgr seresvde 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 technical committees. Each member body in
25、terested 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 with the International Electrotechni
26、cal Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publica
27、tion as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 787 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such pat
28、ent rights. International Standard ISO787-13 was prepared by Technical Committee ISO/TC35, Paints and varnishes, Subcommittee SC 2, Pigments and extenders. This second edition cancels and replaces the first edition (ISO 787-13:1973), of which it constitutes a minor (editorial) revision. ISO 787 cons
29、ists of the following parts, under the general title General methods of test for pigments and extenders: Part 1: Comparison of colour of pigments Part 2: Determination of matter volatile at 105 C Part 3: Determination of matter soluble in water Hot extraction method Part 4: Determination of acidity
30、or alkalinity of the aqueous extract Part 5: Determination of oil absorption value Part 7: Determination of residue on sieve Water method Manual procedure Part 8: Determination of matter soluble in water Cold extraction method Part 9: Determination of pH value of an aqueous suspension Part 10: Deter
31、mination of density Pyknometer method Part 11: Determination of tamped volume and apparent density after tamping Part 13: Determination of water-soluble sulfates, chlorides and nitrates Part 14: Determination of resistivity of aqueous extract Part 15: Comparison of resistance to light of coloured pi
32、gments of similar types Part 16: Determination of relative tinting strength (or equivalent colouring value) and colour on reduction of coloured pigments Visual comparison method Part 17: Comparison of lightening power of white pigments Part 18: Determination of residue on sieve Mechanical flushing p
33、rocedure Part 19: Determination of water-soluble nitrates (Salicylic acid method) Part 21: Comparison of heat stability of pigments using a stoving medium Part 22: Comparison of resistance to bleeding of pigments ENISO78713:2002ivOSI 1-78732002:)E( ISO 2002 r llAithgs reservde v Part 23: Determinati
34、on of density (using a centrifuge to remove entrained air) Part 24: Determination of relative tinting strength of coloured pigments and relative scattering power of white pigments Photometric methods Part 25: Comparison of the colour, in full-shade systems, of white, black and coloured pigments Colo
35、rimetric method ENISO78713:2002vANRETNIITOTS LANDNADRA OSI 1-78732002:)E( ISO 2002 r llAithgs reservde 1 General methods of test for pigments and extenders Part 13: Determination of water-soluble sulfates, chlorides and nitrates 1 Scope This part of ISO 787 specifies a general method of test for det
36、ermining the water-soluble sulfates, chlorides and nitrates of pigments. NOTE When this general method is applicable to a given pigment, a cross-reference to it will simply be included in the International Standard relating to the pigment, with a note of any detailed modification which may be needed
37、 in view of the special properties of the pigment in question. Only when this general method is not applicable to a particular pigment will a special method for determination of water-soluble sulfates chlorides or nitrates be specified. 2 Normative reference The following normative document contains
38、 provisions which, through reference in this text, constitute provisions of this part of ISO 787. For dated references, subsequent amendments to, or revisions of, this publication do not apply. However, parties to agreements based on this part of ISO 787 are encouraged to investigate the possibility
39、 of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 15528, Paints, varnishes and raw materia
40、ls for paints and varnishes Sampling 3R e a g e n t s All reagents used shall be of recognized analytical reagent quality. Distilled water, or water of equivalent purity, shall be used. 3.1 Hydrochloric acid, . 3.2 Silver nitrate, standard volumetric solution. 3.3 Ammonium chloride solution, . 3.4 S
41、odium hydroxide solution, . 3.5 Barium chloride solution, . 3.6 Potassium chromate solution, . 3.7 Devardas alloy, powdered. = 1,18 0,01 mol/l 17,2 mg/l 200 g/l 50 g/l 50 g/l ENISO78713:20021ISO -7872:31)E(200 2 ISO 2002 Ar llithgr seresvde 3.8 Nesslers reagent, prepared by either method a) or metho
42、d b) as follows: a) Dissolve of potassium iodide in of water. Add cold saturated mercury(II) chloride (HgCl 2 ) solution, while stirring, until a faint red precipitate is formed. Continuing to stir, add of potassium hydroxide solution ( ), dilute to , mix well, allow to settle, decant the clear supe
43、rnatant liquid and store in the dark. b) Dissolve of potassium iodide and of mercury(II) chloride in of water. Add cold saturated mercury(II) chloride solution, while shaking, until a slight red precipitate remains, then add of sodium hydroxide, shake until dissolved, and finally add a little more o
44、f the saturated mercury(II) chloride solution and dilute to with water. Shake occasionally over a period of several days, allow to stand, and use the clear supernatant liquid for the test. 4 Apparatus Normal laboratory equipment, plus the following: 4.1 Sintered-silica filter crucible, porosity grad
45、e P10 or P16 (pores size index to ). 4.2 Nessler cylinder, capacity . 4.3 Distillation apparatus. 5 Sampling The sample of pigment used for the test shall be taken in accordance with the provisions of ISO 15528. 6 Determination of sulfates 6.1 Procedure Take of the clear aqueous extract obtained in
46、one of the methods, as appropriate, for the determination of matter soluble in water (either the hot extraction method 1)or the cold extraction method 2) ), acidify with of hydrochloric acid (3.1) and boil the solution vigorously, taking care to avoid loss of solution by splashing. Add barium chlori
47、de solution (3.5), drop by drop, to the hot solution until in slight excess, and allow the solution to stand overnight. Decant the supernatant liquid through the tared silica filter crucible, transfer the precipitate to the crucible and wash it free from chloride, ignite it gently, then at red heat, cool it in a desiccator and weigh to the nearest . 6.2 Expression of results Calculate the water-soluble sulfate content expressed as SO 4 , as a percentage by mass, by the formula: where is the mass, in grams, of pigment used in the determination of matter solub
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