BS 508-2-1984 Butan-1-ol for industrial use - Methods of test《工业用丁醇 第2部分 试验方法》.pdf
《BS 508-2-1984 Butan-1-ol for industrial use - Methods of test《工业用丁醇 第2部分 试验方法》.pdf》由会员分享,可在线阅读,更多相关《BS 508-2-1984 Butan-1-ol for industrial use - Methods of test《工业用丁醇 第2部分 试验方法》.pdf(10页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD CONFIRMED JUNE 1990 BS 508-2: 1984 Butan-1-ol for industrial use Part 2: Methods of test UDC 661.725.4:543.062BS508-2:1984 This British Standard, having been prepared under the directionof the Chemicals Standards Committee, was published under the authority ofthe Board of BSI and co
2、mes into effect on 31 October 1984 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference CIC/4 Draft for comment 80/51210 DC ISBN 0 580 14084 9 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the C
3、hemicals Standards Committee (CIC/-) to Technical Committee CIC/4 upon which the following bodies were represented: Chemical Industries Association Ministry of Defence Oil and Colour Chemists Association Royal Society of Chemistry Society of Chemical Industry The following bodies were also represent
4、ed in the drafting of the standard, through subcommittees and panels: British Pharmacopoeia Commission British Society of Perfumers Cosmetic, Toiletry and Perfumery Association Limited Department of Trade and Industry (Laboratory of the Government Chemist) Amendments issued since publication Amd. No
5、. Date of issue CommentsBS508-2:1984 BSI 10-1999 i Content Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Sampling 1 3 Determination of density at 20 C 1 4 Determination of distillation characteristics 1 5 Determination of residue on evaporation on a water bath 1 6 Determinat
6、ion of bromine number 1 7 Measurement of colour 1 8 Determination of water content 1 9 Determination of aldehydes and ketones content 1 10 Determination of acidity 2 11 Test reports 3 Publications referred to Inside back coverBS508-2:1984 ii BSI 10-1999 Foreword This Part of this British Standard, w
7、hich has been prepared under the direction of the Chemicals Standards Committee, provides a comprehensive series of test methods for butan-1-ol for industrial use. Although applicable to the material in general, it includes all the test methods required to assess compliance with BS508-1. The standar
8、d previously numbered BS 508 (published in 1966) has been amended to become BS 508-1 “Specification” and the methods of test that were included in the appendices have been deleted. In preparing this standard, the opportunity has been taken to implement Parts 1 and 2 of ISO 755 “Butan-1-ol for indust
9、rial use Methods of test”, published by the International Organization for Standardization (ISO). Part 3, although approved by the UK, is not to be implemented as there is no UK requirement for the test method. These standards have been prepared, with the active participation of the UK, by Technical
10、 Committee 47, Chemistry, of the International Organization for Standardization (ISO), as separate parts of ISO755 and constitute the revision of ISO Recommendation R 755. Subsequent International Standards in the ISO 755 series, if approved by the UK, will be published as additions to this British
11、Standard, without technical alteration. Clauses2 to9 and clause11 of this British Standard are related to ISO 755-1 but not equivalent in technical content. The technical differences occur in the method for the determination of aldehydes and ketones content (see clause9): in this British Standard on
12、ly one concentration of potassium hydroxide solution is allowed for the titration and only one form of expression of the results (as a percentage by mass calculated as butyraldehyde) is given. ISO 755-1 refers to the general method described in ISO 1843-3 for the determination of aldehydes and keton
13、es content, and gives the additional information needed to carry out the determination for butan-1-ol: in this British Standard, the method is described in full. Clause10 of this standard, which describes a method for the determination of acidity, is equivalent to ISO755-2 in technical content but d
14、iffers in presentation. This Part of this standard describes methods of test only and should not be referred to as a specification defining limits of purity. Reference to this Part of this standard should indicate that the methods of test used are in accordance with the appropriate clause(s) of BS50
15、8-2. 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 does not of itself confer immunity from legal obligations. Summary of pages This document compr
16、ises a front cover, an inside front cover, pages i and ii, pages1 to 4, 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.BS508-2:1984 BSI 10-199
17、9 1 1 Scope This Part of this British Standard describes methods for testing butan-1-ol for industrial use. NOTEThe titles of the publications referred to in this standard are listed on inside back cover. 2 Sampling 1) Store the laboratory sample in a clean, dry and airtight, ground glass stoppered
18、bottle, or a screw-capped bottle fitted with a polyethylene cone insert, of such capacity that it is almost filled by the sample. Sufficient ullage should be left in the bottle to avoid excessive pressure changes that could arise from temperature variations during storage and handling. About10% ulla
19、ge is recommended. If it is necessary to seal the bottle, take care to avoid any risk of contamination of the contents. Store the sample in a cool place in the dark. 3 Determination of density at 20 C Determine the density at 20 C by the method described in BS4522. 4 Determination of distillation ch
20、aracteristics Determine the distillation characteristics by the method described in BS4591, except that the following thermometer, temperature corrections and distillation conditions shall be used. a) Thermometer (3.2 of BS4591:1971). Use a thermometer designated F150C/100 complying with the require
21、ments of BS593. b) Corrections to be applied to observed temperatures (7.2 of BS4591:1971). If the corrected barometric pressure deviates from1013mbar 2)apply a correction to the observed temperature by subtracting0.028 C for every millibar above, or adding0.028 C for every millibar below,1013mbar.
22、c) Distillation (6.1 of BS4591:1971). Regulate the rate of heating so that the first drop of distillate falls from the end of the condenser after10to15min. 5 Determination of residue on evaporation on a water bath Determine the residue on evaporation by the method described in BS4524. 6 Determinatio
23、n of bromine number Determine the bromine number (bromine index) by the method described in BS4523. 7 Measurement of colour Determine the colour by the method described in BS5339. 8 Determination of water content Determine the water content by one of the methods described in BS2511. 9 Determination
24、of aldehydes and ketones content NOTEThis method is based on ISO1843-3 which is to be implemented as part of the revision of BS4583:1970. 9.1 Principle Reaction of carbonyl compounds present in a test portion with hydroxylammonium chloride to form an oxime, and potentiometric titration of the hydroc
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BS50821984BUTAN1OLFORINDUSTRIALUSEMETHODSOFTEST 工业 丁醇 部分 试验 方法 PDF
链接地址:http://www.mydoc123.com/p-544848.html