1、BRITISH STANDARD CONFIRMED MARCH 1990 BS 662-1: 1979 Carbon disulphide for industrial use Part 1: Specification UDC 661.22:546.265.14BS 662-1:1979 This British Standard, having been prepared under the directionof the Chemical Standards Committee, was published under the authority ofthe Executive Boa
2、rd on 31January1979 BSI 01-2000 First published 1936 First revision March 1950 Second revision January 1979 The following BSI references relate to the work on this standard: Committee reference CIC/4 Draft for comment77/52744DC ISBN 0580106667 Cooperating organizations The Chemicals Standards Commit
3、tee, under whose direction this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Association of Fatty Acid Distillers British Tar Industry Association Chemical Industries Association* Chemical Society, A
4、nalytical Division Department of Health and Social Security Department of Industry, Laboratory of the Government Chemist Fertiliser Manufacturers Association Ltd. Hydrocarbon Solvents Association Institution of Gas Engineers Ministry of Agriculture, Fisheries and Food Ministry of Defence National Su
5、lphuric Acid Association Paintmakers Association of Great Britain Ltd. Royal Institute of Public 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 d
6、irectly represented on the committee entrusted with the preparation of this British Standard: British Man-made Fibres Federation British Plastics Federation Oil and Colour Chemists Association Pharmaceutical Society of Great Britain Royal Institute of Chemistry Individual Company Amendments issued s
7、ince publication Amd. No. Date of issue CommentsBS662-1:1979 BSI 01-2000 i Contents Page Cooperating organizations Inside front cover Foreword ii 1 Scope 1 2 References 1 3 Description 1 4 Sampling and size of sample 1 5 Density 1 6 Distillation characteristics 1 7 Residue on evaporation 1 8 Inorgan
8、ic sulphur content 1 9 Alkalinity or acidity 1 10 Thiophene content 1 11 Benzene content 1 12 Mercaptan (thiol) content 1 13 Hydrocarbon content 1 Publications referred to Inside back coverBS 662-1:1979 ii BSI 01-2000 Foreword This British Standard has been prepared under the direction of the Chemic
9、als Standards Committee to provide a specification and methods of test for carbon disulphide for industrial use. The first edition of this standard was issued in1936. A revision, published in1950, was amended in1954 to include the determination of sulphur dioxide, and was confirmed in1960. The prese
10、nt edition extends the scope of the specification and incorporates ISO3144. The standard is presented in three Parts: Part 1: Specification; Part 2: Sampling and methods of test; Part 3: Additional methods of test. Part 2 is identical with ISO3144 “Carbon disulphide for industrial use Sampling and m
11、ethods of test” and includes the following test methods: Determination of density Determination of distillation characteristics Determination of residue on evaporation Determination of inorganic sulphur content Determination of alkalinity or acidity Part 3 specifies methods of test for thiophene, be
12、nzene, mercaptans (thiols) and hydrocarbons, which are not included in the ISO publication, and gives an alternative method for the determination of hydrogen sulphide and inorganic sulphur which avoids the use of the extremely deliquescent disodium sulphide nonahydrate. A British Standard does not p
13、urport to include all the necessary provisions of a contract. 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 fron
14、t cover, pages i and ii, pages1 and 2, an inside back cover 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.BS662-1:1979 BSI 01-2000 1 1 Scope This British Standard
15、 specifies requirements for carbon disulphide for industrial use. WARNING NOTE. Carbon disulphide is highly volatile and gives off vapour at normal room temperature. It is harmful by inhalation of the vapour, by prolonged or repeated contact with the liquid or if taken into the mouth. Further inform
16、ation is available in Technical Data note2 published by the Health and Safety Executive on an annual basis. Carbon disulphide is a highly flammable volatile liquid with a low flash point, a wide explosive range and an auto-ignition temperature lower than120 C. Contact with exposed steam lines or the
17、 surface of an ordinary electric light bulb can cause ignition. Because of its hazardous nature, carbon disulphide should always be handled in accordance with the suppliers safety recommendations. 2 References The titles of the publications referred to in this standard are listed on the inside back
18、cover. 3 Description The material shall be clear, colourless and free from matter in suspension and visible water, and shall consist essentially of carbon disulphide, CS 2 . 4 Sampling and size of sample A representative sample of not less than1000ml shall be taken from the bulk of the material by t
19、he method described in Part2 of this standard. 5 Density When determined by the method specified in Part2,the density at20 C of the material shallbenot lower than1.263g/ml and not higherthan1.267g/ml. NOTEThe above density values correspond to the following relative density ranges 6 Distillation cha
20、racteristics When tested by the method specified in Part2, at apressure of100kPa, the material shall yield not less than95% by volume below46.4 C. 7 Residue on evaporation When tested by the method specified in Part2, the material shall not leave more than0.01% by mass of non-volatile residue. The r
21、esidue shall be free from visible oil. 8 Inorganic sulphur content When determined by the method specified in either Part2 or Part3, the total inorganic sulphur content, i.e. hydrogen sulphide and sulphur dioxide, shall not be greater than2mg/kg. 9 Alkalinity or acidity When tested by the method spe
22、cified in Part2, the material shall be neutral or alkaline. The alkalinity shall not exceed2 milligram equivalents per litre. 10 Thiophene content When determined by the method specified in Part3, the thiophene content shall not be greater than100mg/kg. 11 Benzene content When determined by the meth
23、od specified in Part3, the benzene content shall not be greater than100mg/kg. 12 Mercaptan (thiol) content When determined by the method specified in Part3, the mercaptan (thiol) content shall not be greater than2mg/kg. 13 Hydrocarbon content When determined by the method specified in Part3, the hyd
24、rocarbon content shall not be greater than100mg/kg. Relative density at15.5 C/15.5 C 1.270 to 1.274 Relative density at20 C/20 C 1.265 to 1.2692 blankBS662-1:1979 BSI 01-2000 Publications referred to BS 662, Carbon disulphide for industrial use. BS 662-2, Sampling and methods of test. BS 662-3, Addi
25、tional methods of test. BS 662-1: 1979 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal C
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