BS-5711-13-1979.pdf
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1、BRITISH STANDARD CONFIRMED OCTOBER 1989 BS 5711-13: 1979 Methods of Sampling and test for glycerol Part 13: Limit test for chloride NOTEIt is recommended that this Part of BS 5711 be read in conjunction with the general information given in BS 5711-0 “General introduction”, issued separately. UDC 66
2、1.188.1:547:426.1:543.064:546.131 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 15:11:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5711-13:1979 This British Standard, having been prepared under the direction of the Chemicals Standards Committee, was published under the authority of the
3、Executive Board and comes into effect on 30 November 1979 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference CIC/6 Draft for comment 75/53579 DC ISBN 0 580 10994 1 A British Standard does not purport to include all the necessary provisions of a contract
4、. 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, pages 1 and 2, an inside back cover
5、 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.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Mon
6、Dec 04 15:11:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5711-13:1979 BSI 12-1999i Contents Page 1Scope and field of application1 2References1 3Principle1 4Reagents1 5Sampling1 6Procedure1 7Test report1 Publications referred to Inside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon D
7、ec 04 15:11:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 15:11:04 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5711-13:1979 BSI 12-19991 1 Scope and field of application This British Standard describes a turbidimetric limit test for c
8、hloride in chemically pure glycerol. 2 References The titles of the publications referred to in this standard are listed on the inside back cover. 3 Principle Treatment of a diluted test portion with nitric acid and silver nitrate solution and examination for any turbidity. 4 Reagents The reagents s
9、hall be of a recognized analytical grade. Distilled water complying with the requirements of BS 3978 or water of at least equal purity shall be used. 4.1 Nitric acid, 1.6N reagent solution. Dilute concentrated nitric acid, 70 % (m/m), (16N) 1 + 9. 4.2 Silver nitrate, 0.01N standard volumetric soluti
10、on. 5 Sampling Prepare the laboratory sample as described in Part 2 of this British Standard. 6 Procedure Dilute 10 ml of the sample to 50 ml with water. Place 5 ml of this solution in a boiling tube, add 0.25 ml of the nitric acid solution (4.1), 5.0 ml of the silver nitrate solution (4.2) and mix.
11、 Observe if any turbidity is produced. NOTEIt is advisable that all tests should be carried out in duplicate. 7 Test report 7.1 Report whether any turbidity is produced. 7.2 The test report shall include the following particulars: a) a reference to this British Standard; b) the result and the method
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