SANS 11890-1-2004 Paints and varnishes - Determination of volatile organic compound (VOC) content Part 1 Difference method《油漆及清漆 挥发性有机化合物含量(VOC)测定 第1部分 差分法》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ICS 87.040 ISBN 0-626-15210-0 SANS 11890-1:2004 Edition 1 ISO 11890-1:2000 Edition 1 SOUTH AFRICAN NATIONAL STANDARD Paints and varnishes Determination o

4、f volatile organic compound (VOC) content Part 1: Difference method This national standard is the identical implementation of ISO 11890-1:2000 and is adopted with the permission of the International Organization for Standardization. Published by Standards South Africa 1 dr lategan road groenkloof !

5、private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa 2004 SANS 11890-1:2004 Edition 1 ISO 11890-1:2000 Edition 1 Table of changes Change No. Date Scope Abstract Specifies a method for the determination of the volatile o

6、rganic compound (VOC) content of paints, varnishes and their raw materials. This part may be used where the expected VOC content is greater than about 15 % by mass. Keywords chemical analysis and testing, chemical composition, coating materials, coatings, contents, differential method, lacquers, lea

7、d, materials, metals, methods of analysis, organic compounds, paints, pigments, printing inks, sampling methods, solutes, solvents, varnishes, volatile, volatile matter determination, volatile organic compound content, gravimetric. National foreword This South African standard was approved by Nation

8、al Committee STANSA SC 5140.11I, Paints and varnishes Test methods, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. INTERNATIONALSTANDARDISO11890-1First edition2000-05-15Reference numberISO 11890-1:2000(E) ISO 2000Paints and varnishes Det

9、ermination ofvolatile organic compound (VOC) content Part 1:Difference methodPeintures et vernis Dtermination de la teneur en composs organiquesvolatils (COV) Partie 1: Mthode par diffrenceISO 11890-1:2000(E)ii ISO 2000 All rights reservedPDF disclaimerThis PDF file may contain embedded typefaces. I

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11、es licensing policy. The ISO Central Secretariat accepts no liability in this area.Adobe is a trademark of Adobe Systems Incorporated.Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameterswere optimized for pri

12、nting. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely eventthat a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2000All rights reserved. Unless otherwise specified, no part of this p

13、ublication may be reproduced or utilized in any form or by any means, elec-tronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs mem-ber body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 G

14、eneva 20Tel. + 41 22 749 01 11Fax + 41 22 734 10 79E-mail copyrightiso.chWeb www.iso.chPrinted in SwitzerlandISO 11890-1:2000(E) ISO 2000 All rights reserved iiiContents Page1 Scope . 12 Normative references . 13 Terms and definitions 24 Principle 25 Required supplementary information . 36 Sampling

15、. 37 Procedure . 38 Calculation 49 Expression of results 510 Precision . 511 Test report 6AnnexA Required supplementary information 7ISO 11890-1:2000(E)iv ISO 2000 All rights reservedForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodi

16、es (ISOmember bodies). The work of preparing International Standards is normally carried out through ISO technicalcommittees. Each member body interested in a subject for which a technical committee has been established hasthe right to be represented on that committee. International organizations, g

17、overnmental and non-governmental, inliaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commis-sion (IEC) on all matters of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IE

18、C Directives, Part 3.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 the member bodies casting a vote.Attention is drawn to the possibility that some of the

19、 elements of this part of ISO 11890 may be the subject of patentrights. ISO shall not be held responsible for identifying any or all such patent rights.International Standard ISO 11890-1 was prepared by Technical Committee ISO/TC 35, Paints and varnishes,Subcommittee SC 10, Test methods for binders

20、for paints and varnishes.ISO 11890 consists of the following parts, under the general title Paints and varnishes Determination of volatile or-ganic compound (VOC) content: Part 1: Difference method Part 2: Gas-chromatographic methodAnnex A forms a normative part of this part of ISO 11890.INTERNATION

21、AL STANDARD ISO 11890-1:2000(E) ISO 2000 All rights reserved 1Paints and varnishes Determination of volatile organiccompound (VOC) content Part 1:Difference method1 ScopeThis part of ISO 11890 is one of a series of standards dealing with the sampling and testing of paints, varnishes andrelated produ

22、cts.It specifies a method for the determination of the volatile organic compound (VOC) content of paints, varnishes andtheir raw materials. This part may be used where the expected VOC content is greater than about by mass.When the expected VOC content is greater than by mass and less than about by

23、mass, ISO 11890-2shall be employed.This method assumes that the volatile matter is either water or organic. However, other volatile inorganic compoundsmay be present and may need to be quantified by another suitable method and allowed for in the calculations.2 Normative referencesThe following norma

24、tive documents contain provisions which, through reference in this text, constitute provisions ofthis part of ISO 11890. For dated references, subsequent amendments to, or revisions of, any of these publicationsdo not apply. However, parties to agreements based on this part of ISO 11890 are encourag

25、ed to investigate thepossibility of applying the most recent editions of the normative documents indicated below. For undated references,the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers ofcurrently valid International Standards.ISO 760:1978,

26、 Determination of water Karl Fischer method (General method).ISO 1513:1992, Paints and varnishes Examination and preparation of samples for testing.ISO 2811-1:1997, Paints and varnishes Determination of density Part 1: Pyknometer method.ISO 2811-2:1997, Paints and varnishes Determination of density

27、Part 2: Immersed body (plummet) method.ISO 2811-3:1997, Paints and varnishes Determination of density Part 3: Oscillation method.ISO 2811-4:1997, Paints and varnishes Determination of density Part 4: Pressure cup method.ISO 3251:1993, Paints and varnishes Determination of non-volatile matter of pain

28、ts, varnishes and binders forpaints and varnishes.ISO 3270:1984, Paints and varnishes and their raw materials Temperatures and humidities for conditioning andtesting.ISO 4618-1:1998, Paints and varnishes Terms and definitions for coating materials Part 1: General terms.ISO 5725-1:1994, Accuracy (tru

29、eness and precision) of measurement methods and results Part 1: General prin-ciples and definitions.15 %0,1 % 15 %ISO 11890-1:2000(E)2 ISO 2000 All rights reservedISO 5725-2:1994, Accuracy (trueness and precision) of measurement methods and results Part 2: Basic methodfor the determination of repeat

30、ability and reproducibility of a standard measurement method.ISO 11890-2:2000, Paints and varnishes Determination of volatile organic compound (VOC) content Part 2:Gas-chromatographic method.ISO 15528:1), Paints, varnishes and raw materials for paints and varnishes Sampling.ASTM D 3960-98, Standard

31、Practice for Determining Volatile Organic Compound (VOC) Content of Paints and Re-lated Coatings.3 Terms and definitionsFor the purposes of this part of ISO 11890, the following terms and definitions apply.3.1VOCvolatile organic compoundfundamentally, any organic liquid and/or solid that evaporates

32、spontaneously at the prevailing temperature andpressure of the atmosphere with which it is in contactISO 4618-1:19983.2VOC contentvolatile organic compound contentthe mass of the volatile organic compounds present in a coating material, as determined under specified conditionsNOTE 1 The properties a

33、nd the amount of the compounds to be taken into account will depend on the field of application of thecoating material. For each field of application, the limiting values and the methods of determination or calculation are stipulated byregulations or agreement.NOTE 2 Under certain US governmental le

34、gislation, the term VOC is restricted solely to those compounds that are photo-chemically active in the atmosphere (see ASTM D 3960). Any other compound is then defined as being an exempt compound.Adapted from ISO 4618-1:19983.3exempt compoundorganic compound that does not participate in atmospheric

35、 photochemical reactions (see note 2 to definition 3.2)3.4ready for usethe state of a product when it is mixed in accordance with the manufacturers instructions in the correct proportionsand thinned if required using the correct thinners so that it is ready for application by the approved method4Pri

36、ncipleAfter preparation of the sample, the non-volatile matter content is determined in accordance with ISO 3251, and thenthe water content is determined using a titration technique employing Karl Fischer reagent in accordance withISO 760. The contents of exempt compounds, if applicable, are determi

37、ned using the method specified inISO 11890-2. A calculation is then performed to give the VOC content of the sample.1) To be published. (Revision of ISO 842:1984 and ISO 1512:1991)ISO 11890-1:2000(E) ISO 2000 All rights reserved 35 Required supplementary informationFor any particular application, th

38、e test method specified in this part of ISO 11890 of needs to be completed by sup-plementary information. The items of supplementary information are given in annex A.6 SamplingTake a representative sample of the product to be tested (or of each product in the case of a multi-coat system), asspecifie

39、d in ISO 15528.Examine and prepare each sample for testing as specified in ISO 1513, preparing the final sample for testing in the“ready for use” state.7 Procedure7.1 Number of determinations and general test conditionsCarry out all tests in duplicate at and a relative humidity of unless otherwise a

40、greed (seeISO 3270).7.2 Determination of parametersDetermine the parameters required by the calculation (see 8.2 to 8.5) as specified in 7.3 to 7.6. Some may be deter-mined by difference, depending on the compounds present in the sample.7.3 DensityIf required by the calculation (see 8.3 to 8.5), det

41、ermine the density of the sample using the part of ISO 2811 whichwill give the best precision for the type of sample concerned. Determine the density at .7.4 Non-volatile matter contentUnless otherwise specified, determine the non-volatile matter content by the method given in ISO 3251.7.5 Water con

42、tentDetermine the water content, as a percentage by mass, by the method given in ISO 760, selecting the reagents sothat there will be no interference from the compounds contained in the sample. If the compounds are not known, thendetermine them qualitatively, e.g. by the method given in ISO 11890-2.

43、NOTE 1 Typical compounds likely to cause interference are ketones and aldehydes. Reagent manufacturers normally publish lit-erature for guidance on correct reagent selection.NOTE 2 If the product to be tested is well characterized and known not to contain water, it may not be necessary to determinet

44、he water content, which can be assumed to be zero.7.6 Exempt compounds (only where national legislation applies)7.6.1 If the organic compounds contained in the sample are not known, then determine them qualitatively, e.g. bythe method given in ISO 11890-2.7.6.2 Determine the contents of the exempt c

45、ompounds contained in the sample using the method given inISO 11890-2.(23 2)C (50 5) %23CISO 11890-1:2000(E)4 ISO 2000 All rights reserved7.6.3 Determine the densities of the exempt compounds by the method given in 7.3, or by referring to published ref-erence data.8 Calculation8.1 GeneralCalculate t

46、he VOC content by the method specified in the referring specification. If no particular method is specified,calculate the VOC content by method 1.Method 1 is the preferred calculation method as the precision is better since it does not involve the determination ofdensity (which introduces the potent

47、ial for additional errors).8.2 Method 1: VOC content, as a percentage by mass, of the product “ready for use”whereVOC is the VOC content, as a percentage by mass, of the product “ready for use”;NV is the non-volatile matter content, as a percentage by mass (see 7.4);is the water content, as a percen

48、tage by mass (see 7.5).8.3 Method 2: VOC content, in grams per litre, of the product “ready for use”whereVOC is the VOC content, in grams per litre, of the product “ready for use”;NV is the non-volatile matter content, as a percentage by mass (see 7.4);is the water content, as a percentage by mass (

49、see 7.5);is the density, in grams per millilitre, of the sample at (see 7.3);10 is a conversion factor.8.4 Method 3: VOC content, in grams per litre, of the product “ready for use” less waterwhereVOClwis the VOC content, in grams per litre, of the product “ready for use” less water;NV is the non-volatile matter content, as a percentage by mass (see 7.4);is the water content, as a percentage by mass (see 7.5);VOC = 100NVmwmwVOC =(100NVmw) %s10mw%s23CVOClw=100NVmw100%smw%w!%s1 000mwISO 1189