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1、J IS JAPANESE I NDUSTRIAL STANDARD Translated and Published by Japanese Standards Association Pulps - Determination of Kappa number ICs 85.040 Descriptors : paper pulp, kappa number, testing Reference number : JIS P 8211 : 1998 (E) 7s Copyright Japanese Standards Association Provided by IHS under li
2、cense with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:38:22 MDTNo reproduction or networking permitted without license from IHS -,-,- P 8211 : 1998 Foreword This translation has been made based on the original Japanese Industrial Standard revised by the Min
3、ister of International Trade and Industry through deliberations at Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law. Consequently JIS P 8211:1994 is replaced with JIS P 8211:1998. This revision is made for conformity with IS0 302 :1981, Pulps - Determinat
4、ion of Kappa number. Date of Establishment: 1976-03-01 Date of Revision: 1998-01-20 Date of Public Notice in Official Gazette: 1998-01-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on Consumer Life JIS P 8211:1998, First English edition published in 1999-02 Translate
5、d and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. , 1 1 I O JSA 1999 All rights reserved. Unless otherwise specified, no part of this publication m
6、ay be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/111111100
7、1, User=Wing, Bernie Not for Resale, 03/13/2007 02:38:22 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS P 8211-ENGL 1778 D 4733b08 0559175 m L : JAPANESE INDUSTRIAL STANDARD JIS P 8211 : 1998 Pulps-Determination of Kappa number Introduction This Japanese Industrial
8、 Standard has been prepared on the basis of the first edition of IS0 302, Pulps-Determination of Kappa number, without any modification in technical content, except below-stated specified content. Summary of different points on specified content 0 Standards in JIS are supplemented in normative refer
9、ences. I The preparation methods for reagents are supplemented. In taking of sample, the method specified in JIS is supplemented. In the determination of sample water, the method specified in JIS is supplemented. mentioned in corresponding International Standard. In this Standard, the places underli
10、ned with dotted line are those which are not 1 Scope This Japanese Industrial Standard specifies a method for determination of the Kappa number of pulp (hereafter referred to as “Kappa number”). This test method gives the index of lignin content or bleachability of pulp, and is applicable to all kin
11、ds of unbleached pulp obtained in yields under 60 % (mass/mass), and to semi-bleached chemical pulp and semi-chemical pulp. Remarks 1 The International Standard corresponding to this Standard is as follows. IS0 302 : 1981 Pulps-Determinution of Kappa number 2 The relations between Kappa number and l
12、ignin content are different depending on the wood species and delignification procedures, and when the Kappa number is set as an index of lignin content, specified relation will have to be developed for each pulp type. When Kappa number is KP (kraft pulp) 125 or more, or SP (sulphite pulp) 100 or mo
13、re, however, it shall be attached. The method also applicable for determination on semi-bleached chemical pulps whose sample mass is at most 10 g, and in this case the lowest limit of Kappa number shall be 5. The degree of digestion and delignification of higher-yield pulp shall be determined by the
14、 methods which do not involve permanganate oxidation, such as IS0 3260. 3 4 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. As to those normative references, the most recent editions (containing the
15、amendment) shall be applied. JIS K 8005 Reference materials for volumetric analysis J IS K 8247 Potassium permangana te JIS K 8625 Sodium carbonate JIS K 8637 Sodium thiosulfate pentahydrate JIS K 8659 Starch, soluble JIS K 891 3 Potassium iodide . . . Copyright Japanese Standards Association Provid
16、ed by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:38:22 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 P 8211 : 1998 JIS K 8922 Potassium iodate JIS K 8951 Sulfuric acid Glossary of terms use( i n pulps and
17、 Rapers industry JIS P O001 . Pulps- Samplinglfor testing JIS P 8201 . Method of testing water content of sample of paperulp JIS P 8203 JIS R 1303 Porcelain beakers for chemical analysis JIS R 3503 Glass apparatus for chemical analysis . Volumetric glassware JIS R 3505 JIS z 8401 IS0 638 Pulps- Dete
18、rmination of dry matter content IS0 3260 Pulps - Determination of chlorine consumption (Degree of delignification) . . . Rulesfor rounding-o.?.nume.-alYalues 3 Definition For the purposes of this Standard,the-.definitjonsinJISP-OOOl.-aI?lJ!, and the rest of the terms are as follows. a) Kappa number
19、(Kappa number of pulp) Obtain the number of milliliters of 0.02 mol/l potassium permanganate solution consumed by 1 g of oven-dried pulp, and correct it to a value corresponding to that obtained when 50 % of the potassium permanganate in the test was consumed. 4 Apparatus, implements, and reagents f
20、ollows. Apparatus, implements, and reagents shall be as Disintegrator Capable of disintegrating the pulp completely giving no damage on their fibers. For instance, an electric high-speed propeller-type mixer. Agitator corrosive material. Propeller-type agitator or magnetic stirrer, made of glass or
21、other non- Beaker for reaction . . . 2 . ( 2 ( 2 o m ! . . b e a k e r i d J . . o o . m . o lain beaker specified in JIS R 1303. Pipet Two 100 ml pipets specified in JIS R 3505. Buret 50 ml buret specified in JIS R 3505. Thermostatic bath keeping the reaction beaker, specified in 4 c), in it while
22、agitating it. . Capable of controlling the temperature at (25 2 0.2) O C , and of Stopwatch Capable of measuring at least 10 minutes to the nearest 1 second. Chemical balance With weighing. capacit-of-10o-gto-2oog.to. the-ne?Ke?t. 1. mg Measuring cylinder 25 m! - m.ea?.!ing. cJ!inder. sI?ecifieb- .i
23、n. JIS. R 3 5 0 5 : 250- m!.beaker.sI)ecifieb.JIs. R3503: Small sized beaker Volumetric flask 1 O00 ml volumetric flask specified in JIS R 3505. F!ask.with.9roU.nb-.Sto.e.r. . F!aSk,-W-h.r-O.u.ndn-sOer?.SPeCfied.n.JIS.R.3505. Copyright Japanese Standards Association Provided by IHS under license wit
24、h JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:38:22 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 P 8211 : 1998 6) Potassium iodide Rea when Kappa number is 50 or less, to the nearest 0.1; when it is over 50 and including 100, t
25、o the nearest 0.5; and when it is over 100, round off into integer. Expression of results Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:38:22 MDTNo reproduction or networking permitted
26、 without license from IHS -,-,- STD-JIS P 8211-ENGL 1778 4733b08 0554181 713 7 P 8211 : 1998 9.3 Example of calculation Air-dry mass of sample Dry matter of content Oven-dry mass of sample Amount of 0.2 mol/l sodium thiosulfate solution consumed in blank test V, Amount of 0.2 mol/! sodium thiosulfat
27、e solution consumed in sample titration V3 Concentration of sodium thiosulfate solution Amount of 0.02 mol/! potassium permanganate solution Correction factor d actually consumed by sample VI Kappa number X 2.200 g 91.5 % (mass/mass) 91.5 -x2.200 g= 2.013 g 1 O 0 52.4 ml 21.0 ml 0.191 O mol/Z (52.4-
28、2 1 .O)xO. 19 1 O o. 1 1.022 = 60.0 ml 60.0 1 .O22 2.013 = 30.5 10 Times of test trials and accuracy Try 2 times the test, and when Kappa number exceeds 20, the each measured value must be in the limit of 31 1.0 % of its average. If the discrepancy of Kappa numbers of 2 times exceeds 2%, carry out t
29、hird test, and take the average of these values. 11 Test report The test report includes the following particulars as occasion demands. a) Title of standard or number of standard, and either JIS or IS0 b) Type of sample and its name c) Year, month, and day of manufacture and site for manufacture d)
30、Test results e) f) Times of test trials (when 3 times or more are tested) Other informations to be needed Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:38:22 MDTNo reproduction or netw
31、orking permitted without license from IHS -,-,- STD*JIS P 8211-ENGL 1998 9933b08 055i182 8 P 8211 : 1998 Annex (normative) Variations of the standard procedure The variations of the standard procedure attached to this Annex form part of the Standard. These variations, which shall be used only for pr
32、ocess control purposes, can give the test results similar to the results obtained by standard method, but cannot be considered as complying with the standard procedure, therefore the fact that the variations have been used shall be stated in the test report. 1 Preparation of sample 1.1 Mix it suffic
33、iently, filter it through Bchner funnel, avoiding any loss of fibers and fines, and prepare sample matt that corresponds to 3 g to 10 g in oven-dry mass. Air-dry this matt at ordinary temperature or at not higher than 105 O C , and tear it into small pieces. Screened slush pulp sample 1.2 the same p
34、rocedures as those in plant, and the method shall be stated in the test report. Unscreened pulp which is normally screened before bleaching or other processing Remove the shives and knots from the sample by screening. The screening method shall be Complete the preparation of the screened pulps as sp
35、ecified in 1.1. 1.3 400 csf freeness by Canadian Standard) and eliminate the shives Unscreened pulp which is not normally screened before further processing Wash the Pulp thoroughly. il sh:iv.es. are. .contained 2- t.eat.revious!;y-wih. .a. re!ine?-(to. the .!eve!. of _-.-_._ _ _._ . ., : Complete t
36、he preparation of the screened pulps as specified in 1.1. 2 Variations for ordinary management The procedures specified in 8 of this Standard body shall follow the below-stated procedures. 2.1 Case of small test sample or low Kappa number Such quantities as, 50 ml of 0.02 mol/Z potassium permanganat
37、e solution (5.1), 50 ml of 2 mol/Z sulfuric acid (5.4), 400 ml of water, and the appropriate amount of pulp, shall be taken. In this case, when half the volumes of potassium permanganate solution (5.1) is used, V, in the Table 1 of 9 of this Standard body, shall be made 2V,. Thus, if VI is 25 ml, 2V
38、1 becomes 50 ml, and the correction factor is 1.000. Other than above-stated, follow the standard procedures. 2.2 follows. Disintegration in reaction beaker The disintegration in reaction beaker shall be as a) b) Easily disintegrated sample can be slurried directly in the reaction beaker. In case of
39、 low Kappa number (see 2.1), a 1 O00 ml reaction beaker or a kitchen mixer can be used for disintegrator or reaction beaker. Provided that disintegration shall not be continued during the reaction. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/
40、1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:38:22 MDTNo reproduction or networking permitted without license from IHS -,-,- STDaJIS P 8211-ENGL 1978 9933bOB 0559183 776 9. P 8211 : 1998 2.3 Correction of reaction temperature When a thermostatic bath is not available, measure the temp
41、erature of the pulp mixture after the reaction has been taking place for 5 minutes, and assume this to be the average reaction temperature (t) throughout the test. Control the temperature to fall in the range from 20 O C to 30 O C , and obtain the Kappa number by approximate correction according to
42、the following formula. V , x d m X=- 1+0.013 (25-t) where, t : average temperature while test is being carrid out ( O C ) Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:38:22 MDTNo repr
43、oduction or networking permitted without license from IHS -,-,- Errata for JIS (English edition) are printed in Standardization Journal, published monthly by the Japanese Standards Association, and also provided to subscribers of JIS (English edition) in Monthly Information. Errata will be provided
44、upon request, please contact: Standardization Promotion Department, Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN TEL. 03-3583-8002 FAX. 03-3583-0462 Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 02:38:22 MDTNo reproduction or networking permitted without license from IHS -,-,-