1、BRITISH STANDARD BS 6070-0: 1981 Methods of Sampling and test for sodium carbonate for industrial use Part 0: General introduction UDC661.833.622:546.33264:543.062:543.05BS6070-0:1981 This British Standard, having beenprepared under the directionof theChemicals Standards Committee, was published und
2、erthe authority ofthe Executive Board and comesintoeffect on 27 February 1981 BSI 09-1999 The following BSI reference relates to the work on this standard: Committee reference CIC/22 ISBN 0 580 12000 7 Cooperating organizations The Chemicals Standards Committee, under whose direction this BritishSta
3、ndard was prepared, consists of representatives from the following: Association of Fatty Acid Distillers British Tar Industry Association Chemical Industries Association* Chemical Society (Analytical Division) Consumer Standards Advisory Committee of BSI Department of Health and Social Security Depa
4、rtment of Industry (Laboratory of the Government Chemist) Fertiliser Manufacturers Association Ltd. Hydrocarbon Solvents Association Ministry of Agriculture, Fisheries and Food Ministry of Defence* National Sulphuric Acid Association Paintmakers Association of Great Britain Ltd. Royal Institute of P
5、ublic Health and Hygiene Soap and Detergent Industry Association* Standardization of Tar Products Tests Committee The organizations marked with an asterisk in the above list, together with the following, were directly represented on the Technical Committee entrusted with the preparation of this Brit
6、ish Standard: Asbestos Cement Manufacturers Association Limited British Man-made Fibres Federation British Textile Employers Association Fabric Care Research Association Society of Glass Technology Amendments issued since publication Amd. No. Date of issue CommentsBS6070-0:1981 BSI 09-1999 i Content
7、s Page Cooperating organizations Inside front cover Foreword ii Table 1 Methods of test for sodium carbonate: relationship between BS and international series 1 Publications referred to Inside back coverBS6070-0:1981 ii BSI 09-1999 Foreword This British Standard has been prepared under the direction
8、 of the Chemicals Standards Committee and provides, in separate Parts, a comprehensive series of test methods for sodium carbonate for industrial use. Although applicable to the material in general, it includes all the test methods required to assess compliance with the requirements of BS 3674. The
9、latter specification is in the process of being revised and, in accordance with current BSI policy, will no longer include test methods which in the 1963 edition are given in appendices. In preparing this standard, the opportunity has been taken to implement, without alteration, the majority of the
10、International Standards describing test methods for sodium carbonate. These have been prepared, with the active participation of the UK, by Sub-committee 5 of Technical Committee 47, Chemistry, of the International Organization for Standardization (ISO). Although all such Parts are applicable to the
11、 material in general, most of them also relate to requirements of BS 3674 and replace the corresponding methods appended to that standard. There are, however some test requirements in the specification for which there are no corresponding International Standards and, in these cases, the relevant tes
12、t methods from BS 3674:1963, have been included, technically unchanged, as Parts 6 and 7 of this standard. In this Part of BS 6070, Table 1 gives the relationship of the other Parts of the standard to the corresponding International Standards. This Part also includes information on sampling which is
13、 technically equivalent to that in ISO739“Sodium carbonate for industrial use Preparation and storage of test samples”. Additional information Ethanol. The ethanol used in these determinations may be replaced for these purposes by industrial methylated spirits, 95 % (V/V), complying with the require
14、ments of BS 3591. It should be noted that the use of industrial methylated spirits is governed by The Methylated Spirits Regulations, 1952 (S.I. 1952, No2230) as amended by The Alcoholic Liquors (Amendment of Units and Methods of Measurement) Regulations 1979 (S.I. 1979, No 1149). It is not permissi
15、ble to use duty-free ethanol, received under the provisions of the Alcoholic Liquor Duties Act 1979, Section 10, for purposes for which industrial methylated spirits is an acceptable alternative to ethanol. Sampling. A representative sample of the material, weighing not less than500g is required to
16、carry out the tests in this series except for the anhydrous material where a total sample of 2 kg is needed if it is also required to determine the pouring density. The sample should be transferred immediately to a clean, dry, moisture-resistant container, which should be of such a size that it is n
17、early filled by the sample. NOTEAdditional guidance on sampling is given in BS 5309-1 and BS 5309-4. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard
18、 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, pages1and 2, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated.
19、 This will be indicated in the amendment table on the inside front cover.BS6070-0:1981 BSI 09-1999 1 Table 1 Methods of test for sodium carbonate: relationship between BS and internationalseries BS 6070 Partno Corresponding International Standard no Subject Type of determination Relationship of Inte
20、rnational Standard to BS test method 0 1 2 3 4 5 6 7 739 740 741 742 743 744 a 745 746 5143 General introduction (including sampling) Preparation and storage of test samples Total soluble alkali content Sodium hydrogen carbonate content Chloride content Sulphate content Iron content Non-volatile mat
21、ter Matter insoluble in water Sulphate content Pouring density Copper content Titrimetric Titrimetric Mercurimetric Gravimetric Photometric (1,10-phenanthroline) Reduction and titrimetry Photometric Includes the sampling requirements of ISO 739 Not to be implemented Identical Disapproved by UK Ident
22、ical Disapproved by UK Identical Identical Identical No equivalent International Standard No equivalent International Standard a In course of preparation.2 blankBS6070-0:1981 BSI 09-1999 Publications referred to BS 3591, Industrial methylated spirits. BS 3674, Sodium carbonate (technical grades). BS
23、 5309, Methods of sampling chemical products. BS 5309-1, Introduction and general principles. BS 5309-4, Sampling of solids. BS 6070-0: 1981 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It pre
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