欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    BS 4427-4-1969 Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use - Determination of los.pdf

    • 资源ID:544409       资源大小:376.60KB        全文页数:8页
    • 资源格式: PDF        下载积分:10000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要10000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    BS 4427-4-1969 Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use - Determination of los.pdf

    1、BRITISH STANDARD BS 4427-4: 1969 Methods of test for Sodium tripolyphosphate (penta sodium triphosphate) and sodium pyrophosphate (tetra sodium pyrophosphate) Part 4: Determination of loss on ignitionBS4427-4:1969 This British Standard, having been approved by the Chemicals Industry Standards Commit

    2、tee, was published under the authorityof the Executive Boardon 28 February1969 BSI 11-1999 The following BSI reference relates to the work on this standard: Committee reference CIC/25 ISBN 580 05436 5 Co-operating organizations The Chemicals Industry Standards Committee, under whose authority this B

    3、ritish Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Board of Trade British Steel Industry Chemical Industries Association* Department of Health & Social Security Fertiliser Manufacturers Association Ltd.* Ga

    4、s Council Institution of Gas Engineers Ministry of Technology. Laboratory of the Government Chemist* National Sulphuric Acid Association Royal Institute of Public Health & Hygiene The industrial organizations marked with an asterisk in the above list, together with the following, were directly repre

    5、sented on the committee entrusted with the formulation of the UnitedKingdom point of view in the international work leading to the publication of this British Standard: British Pharmacopoeia Commission Flour Milling and Baking Research Association Institute of Metal Finishing National Association of

    6、 Soft Drink Manufacturers Society for Water Treatment and Examination Textile Institute Amendments issued since publication Amd. No. Date CommentsBS4427-4:1969 BSI 11-1999 i Contents Page Co-operating organizations Inside front cover Foreword ii 1 Scope 1 2 Principle 1 3 Apparatus 1 4 Procedure 1 5

    7、Expression of results 1 6 Test report 1BS4427-4:1969 ii BSI 11-1999 Foreword For some years the United Kingdom has participated in the work of preparing methods of test for sodium tripolyphosphate and sodium pyrophosphate for industrial use, carried out within Working Group7 of Technical Committee47

    8、 Chemistry, of the InternationalOrganization for Standardization (ISO). As international agreement is reached on the methods, it is proposed to publish them as parts of this BritishStandard. This part is technically identical with ISO Recommendation R853, “Sodium tripolyphosphate and sodium pyrophos

    9、phate for industrial use. Determination of loss on ignition”. 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 fro

    10、m legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 and2, 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

    11、table on the inside front cover.BS4427-4:1969 BSI 11-1999 1 1 Scope This Part of BS4427 describes a method for the determination of loss on ignition of sodium tripolyphosphate and sodium pyrophosphate for industrial use. 2 Principle The principle of this method of test is ignition at550 25 C to cons

    12、tant mass. 3 Apparatus Ordinary laboratory apparatus with the following shall be used: 3.1 Porcelain crucible, approximately25mm in diameter. 3.2 Electric furnace, regulated at550 25 C. 4 Procedure 4.1 Test portion. Weigh to the nearest milligramme, approximately5g of the test sample, into the porce

    13、lain crucible (3.1) previously ignited at550 C, cooled in a desiccator and weighed. 4.2 Determination. Place the crucible containing the test portion (4.1) in the furnace (3.2), start heating and progressively raise the temperature to550 25 C. Maintain it at this temperature for about1h. Then remove

    14、 the crucible from the furnace and place it in a desiccator. Weigh after cooling. Repeat the heating to550 25 C to constant mass. 5 Expression of results Loss on ignition expressed as a percentage by mass, is given by the following formula: 6 Test report State the following in the report: 1) the ref

    15、erence of the method used, 2) the results and the method of expression used, 3) any unusual features noted during the determination, 4) any operation not included in this standard or regarded as optional. where m 1 is the mass, in grammes, of crucible and test sample before ignition, m 2 is the mass

    16、, in grammes, of crucible and test sample after ignition, E is the mass, in grammes, of the test portion. m 1 m 2 E -100 2 blankBS4427-4:1969 BSI 11-1999 British Standards The following are available on application: YEARBOOK Including subject index and numerical list of British Standards15s. SECTION

    17、AL LISTS. Gratis Acoustics (SL10) Aerospace materials and components (SL25) Automobile (SL34) British Standard Handbooks (SL27) Building (SL16) Chemical engineering (SL5) Chemicals, fats, glues, oils, soap, etc. (SL4) Cinematography and photography (SL1) Coal, coke and colliery requisites (SL13) Cod

    18、es of Practice (SL8) Consumer goods (SL3) Documentation, including Universal Decimal Classification (SL35) Drawing practice (SL37) Electrical Engineering (SL26) Farming, dairying and allied interests (SL31) Furniture, bedding and furnishings (SL11) Gardening, horticulture and landscape work (SL41) G

    19、as and solid fuel and refractories (SL2) Glassware, excluding laboratory apparatus (SL39) Heating, ventilating and air conditioning (SL42) Hospital equipment (SL18) Illumination and lighting fittings (SL14) Industrial instruments, etc. (SL 17) Iron and steel (SL 24) Laboratory apparatus (SL 23) Leat

    20、her, plastics, rubber (SL 12) Local authority purchasing officers guide (SL 28) Machine tools (SL 20) Mechanical engineering (SL 6) Nomenclature, symbols and abbreviations (SL 29) Non-ferrous metals (SL 19) Nuclear energy (SL 36) Packaging and containers (SL 15) Paints, varnishes, paint ingredients

    21、and colours for paints (SL9) Personal safety equipment (SL30) Petroleum industry (SL 38) Printing and stationery, paper and board (SL22) Road engineering (SL32) Shipbuilding (SL40) Textiles and clothing (SL33) Welding (SL7)BS 4427-4: 1969 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsI

    22、nstitution 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 Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards s

    23、hould make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this BritishStandard would inform the Secretary of the technical commi

    24、ttee responsible, the identity of which can be found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI,

    25、international and foreign standards publications should be addressed to Customer Services. Tel:02089969001. Fax:02089967001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as BritishStandards, unless otherwise re

    26、quested. Information on standards BSI provides a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and serv

    27、ices. Contact the Information Centre. Tel:02089967111. Fax:02089967048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel:0208

    28、9967002. Fax:02089967001. Copyright Copyright subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a re

    29、trieval system or transmitted in any form or by any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designa

    30、tions. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel:02089967070.


    注意事项

    本文(BS 4427-4-1969 Methods of test for sodium tripolyphosphate (pentasodium triphosphate) and sodium pyrophosphate (tetrasodium pyrophosphate) for industrial use - Determination of los.pdf)为本站会员(registerpick115)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开