BS 3591-1985 Specification for industrial methylated spirits《工业用甲基醇规范》.pdf

1、BRITISH STANDARD BS 3591:1985 Specification for Industrial methylated spirits UDC 66.061:547.262-145:661.722BS3591:1985 This British Standard, having been prepared under the directionof the Chemicals Standards Committee, was published under the authority ofthe Board of BSI and comes into effect on 3

2、1October1985 BSI 08-1999 First published March 1963 First revision October 1985 The following BSI references relate to the work on this standard: Committee reference CIC/51 Draft for comment 83/51660 DC ISBN 0 580 14672 3 Committees responsible for this British Standard The preparation of this Briti

3、sh Standard was entrusted by the Chemicals Standards Committee (CIC/-) to Technical Committee CIC/51 upon which the following bodies were represented: British Pharmacopoeia Commission British Society of Perfumers Chemical Industries Association Cosmetic, Toiletry and Perfumery Association Limited De

4、partment of Trade and Industry, Laboratory of the Government Chemist Ministry of Defence Royal Society of Chemistry Amendments issued since publication Amd. No. Date of issue CommentsBS3591:1985 BSI 08-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Description

5、 1 3 Sampling and size of sample 1 4 Colour 1 5 Strength 1 6 Residue on evaporation 1 7 Miscibility with water 1 8 Alkalinity or acidity 1 9 Carbonyl compounds content 1 Appendix A Relation between density in vacuo, density in air andapproximatetotal alcoholic strength 2 Table 1 Relation between den

6、sity in vacuo, density in air andapproximatetotal alcoholic strength 2 Publications referred to Inside back coverBS3591:1985 ii BSI 08-1999 Foreword This revision of this British Standard, one of a series for solvents and allied products, has been prepared under the direction of the Chemicals Standa

7、rds Committee and supersedes BS3591:1963, which is withdrawn. It comprises a specification for industrial methylated spirits to meet the requirements of Government departments and industrial users for material of general commercial quality. It does not, however, apply to material intended for medici

8、nal use, which is included in the British Pharmacopoeia. First published in1963, the standard has been revised primarily to take account of metrication. In particular, the strength of the material is now expressed as a percentage by volume instead of in degrees over proof (O.P.). In addition, change

9、s in legislation relating to alcohol and industrial methylated spirits have been taken into consideration. Furthermore it differs from the previous edition in that the test methods associated with the specification are not included. Instead, reference is made to BS6392, a new British Standard which

10、implements ISO1388, a comprehensive series of tests for commercial grades of ethanol prepared, with the active participation of the United Kingdom, by Technical Committee47 “Chemistry” of the International Organization for Standardization (ISO). For many purposes, for example in various analytical p

11、rocedures, industrial methylated spirits complying with this British Standard may be used as an alternative to ethanol. In such cases, it is not permissible to use duty-free ethanol, received under the provisions of The Alcoholic Liquor Duties Act, 1979, Section10. It should be noted that the manufa

12、cture and use of industrial methylated spirits are governed by The Methylated Spirits Regulations1983 (S.I. 1983, No. 252), and to avoid confusion it should be understood that this standard refers to the grade of methylated spirits known in the trade as “industrial methylated spirits” (I.M.S.) and n

13、ot to “mineralized methylated spirits”. At the time of publication of this British Standard, no corresponding international standard exists. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applica

14、tion. 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, pages1 and 2, an inside back cover and a back cover. This standard has been updated (see copyright date)

15、and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS3591:1985 BSI 08-1999 1 1 Scope This British Standard specifies requirements for industrial methylated spirits. It does not apply to material for medicinal use. NOTEThe titles of the p

16、ublications referred to in this standard are listed on the inside back cover. 2 Description The material, a liquid, shall consist of spirits (essentially ethanol, C 2H 5 OH, and water) to which a denaturant has been added. It shall be clear, colourless and free from matter in suspension, as assessed

17、 by visual inspection, and shall consist of a mixture of95 volumes of spirits of appropriate ethanol content with5 volumes of wood naphtha approved by the Commissioners of Customs and Excise. NOTEIn order to comply with legislation, the maximum methanol content is4% (m/m). 3 Sampling and size of sam

18、ple 1) A representative sample of the material measuring not less than2500mL shall be taken from the bulk for the purpose of examination in accordance with this standard. The sample shall be placed in a clean, dry and air-tight, ground glass-stoppered bottle, or screw-capped bottle fitted with a pol

19、yethylene cone insert, of such capacity that it is almost filled by the sample. When it is necessary to seal the container, care shall be taken to avoid the risk of contaminating the contents in any way. NOTESufficient ullage should be left in the bottle to avoid excessive pressure changes that coul

20、d arise from temperature variations during storage and handling. About10% ullage is recommended. 4 Colour The colour of the material shall not exceed20 Hazen units when measured by the method described in BS5339. 5 Strength For a specified grade, the difference between the upper and the lower limiti

21、ng values of strength, expressed as percentages by volume, shall not exceed0.4. NOTE 1The supplier should be consulted on the actual values for each grade. Strengths normally supplied are in the nominal range of92% (V/V) to100% (V/V). NOTE 2The strength may be determined by means of a glass alcohol

22、hydrometer of the type specified in BS5470 and the appropriate tables, or by means of a density bottle (pyknometer) 2) . For the relationship between density in vacuo, density in air and strength seeAppendix A. 6 Residue on evaporation The residue on evaporation of the material shall not exceed0.01%

23、 (m/m) when determined by the method described in BS4524. 7 Miscibility with water The material shall not show opalescence when diluted1+19 by volume with water complying with the requirements of BS3978, and tested by the method described in BS6392-5. 8 Alkalinity or acidity The material shall not b

24、e alkaline to phenolphthalein and any acidity, calculated as acetic acid (CH 3 COOH), shall not exceed0.005%(m/m) when determined by the method described in BS6392-1. 9 Carbonyl compounds content The carbonyl compounds content of the material, calculated as acetaldehyde (CH 3 CHO), shall not exceed0

25、.10% (m/m) when determined by the method described in BS6392-3. 1) Detailed information on the sampling of liquid chemical products is given in BS5309-1 and BS5309-3. 2) For example, a Gay-Lussac pyknometer complying with BS733-1 is suitable.BS3591:1985 2 BSI 08-1999 Appendix A Relation between dens

26、ity in vacuo, density in air and approximate total alcoholic strength Table 1 gives the relation between density in vacuo, density in air and approximate total alcoholic strength, expressed either as a percentage by volume, or as a percentage by mass, at20 C. The values for density in vacuo are take

27、n from “Practical alcohol tables”, volume2, issued by the Commission of the European Communities. The values for density in air are calculated from the formula relating the temperatures (in C), the percentage by mass of ethanol and the densities in vacuo (in kg/m 3 ) contained in “Recommendation No.

28、22” of the International Organization of Legal Metrology. Densities in vacuo have been converted into densities in air using the conventional values for the density of air and that of the masses adopted in “Recommendation No. 33” of that Organization. The first two columns give an idea of the total

29、alcoholic strength of the spirits at various densities. It is emphasized that this table is not part of the standard and that wood naphtha, which is largely methanol, will be included as alcohol. Table 1 Relation between density in vacuo, density in air and approximate totalalcoholicstrength Approxi

30、mate total alcoholic strength at 20 C Density in vacuo (kg/m 3) as indicated by EEC pattern glass hydrometer at Density in air (kg/m 3 ) % (V/V) % (m/m) 10 C 15 C 20 C 25 C 20 C 90.0 90.5 85.7 86.3 837.6 836.0 833.4 831.8 829.2 827.6 825.0 823.4 828.1 826.4 91.0 91.5 87.0 87.6 834.2 832.6 830.2 828.

31、4 826.0 824.2 821.6 820.0 824.8 823.1 92.0 92.5 88.3 89.0 830.8 829.2 826.6 825.0 822.4 820.8 818.2 816.4 821.3 819.6 93.0 93.5 89.6 90.3 827.4 825.6 823.2 821.4 819.0 817.2 814.6 812.8 817.8 816.0 94.0 94.5 91.0 91.7 823.6 821.8 819.4 817.6 815.2 813.4 811.0 809.2 814.1 812.2 95.0 95.5 92.4 93.1 81

32、9.8 818.0 815.6 813.8 811.4 809.6 807.2 805.2 810.3 808.3 96.0 96.5 93.8 94.6 816.0 813.8 811.8 809.6 807.6 805.4 803.2 801.2 806.3 804.3 97.0 97.5 95.3 96.1 811.8 809.6 807.6 805.4 803.4 801.2 799.2 797.0 802.2 800.0 98.0 98.5 96.8 97.6 807.4 805.2 803.2 801.0 799.0 796.8 794.8 792.6 797.8 795.5 99

33、.0 99.5 98.4 99.2 802.8 800.2 798.6 796.2 794.4 792.0 790.2 787.8 793.2 790.7 100.0 100.0 797.8 793.6 789.4 785.2 788.2BS3591:1985 BSI 08-1999 Publications referred to BS 733, Pyknometers. BS 733-1, Specification. BS 3978, Water for laboratory use. BS 4524, Method for determination of residue on eva

34、poration on a water bath. BS 5309, Methods for sampling chemical products. BS 5309-1, Introduction and general principles. BS 5309-3, Sampling of liquids. BS 5339, Method of measurement of colour in Hazen units (platinum-cobalt scale) of liquid chemical products. BS 5470, Specification for glass alc

35、ohol hydrometers not incorporating a thermometer. BS 6392, Testing of ethanol for industrial use. BS 6392-1, Method for detection of alkalinity or determination of acidity to phenolphthalein. BS 6392-3, Method for determination of carbonyl compounds content present in moderate amounts (titrimetric m

36、ethod). BS 6392-5, Method of test for miscibility with water. BS 3591:1985 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

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