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

    ASTM D1767-1989(2003) Standard Test Method for Ethylene Diamine Tetraacetate (EDTA) in Soaps or Synthetic Detergents《肥皂或合成洗涤剂中乙二胺四乙酸盐(EDTA)含量的标准测试方法》.pdf

    • 资源ID:510432       资源大小:21.20KB        全文页数:2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。

    ASTM D1767-1989(2003) Standard Test Method for Ethylene Diamine Tetraacetate (EDTA) in Soaps or Synthetic Detergents《肥皂或合成洗涤剂中乙二胺四乙酸盐(EDTA)含量的标准测试方法》.pdf

    1、Designation: D 1767 89 (Reapproved 2003)Standard Test Method forEthylene Diamine Tetraacetate (EDTA) in Soaps or SyntheticDetergents1This standard is issued under the fixed designation D 1767; the number immediately following the designation indicates the year oforiginal adoption or, in the case of

    2、revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method covers the determination of ethylenediamine tetraacetate (EDTA) in soaps and s

    3、ynthetic detergents.Throughout this test method EDTA represents the hydrateddisodium salt containing 2 moles of H2O. In the chemicalliterature this is frequently abbreviated to Na2H2Y42H2O.1.2 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is

    4、 theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use. Material SafetyData Sheets are available for reagents and materials. Reviewthem for hazards prior to usage.2. Referenced Docu

    5、ments2.1 ASTM Standards:D 1193 Specification for Reagent Water23. Purity of Reagents3.1 Purity of ReagentsReagent grade chemicals shall beused in all tests. Unless otherwise indicated, it is intended thatall reagents shall conform to the specifications of the Commit-tee on Analytical Reagents of the

    6、 American Chemical Society,where such specifications are available.3Other grades may beused, provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy of the determination.3.2 Unless otherwise indicated, references to water shall

    7、beunderstood to mean reagent water conforming to SpecificationD 1193.4. Reagents4.1 Copper Sulfate Solution (1 mL = 0.0037 g EDTA diso-dium salt)Dissolve 2.497 g of copper sulfate (CuSO45H2O)in water and dilute to 1 L. The actual EDTA equivalent shouldbe determined by the titration of a known weight

    8、 of EDTAdisodium salt.4.2 PAN Indicator SolutionDissolve 0.1 g of 1-(2pyridylazo)-2-naphathol4in 100 mL of methyl alcohol.5. Procedure5.1 Weigh to the nearest 0.001ga3to5-gportion of thesample estimated to contain 1 % of EDTA disodium salt. Varythe amount of the sample used depending upon the actual

    9、amount of EDTA present. Weigh into a 250-mL beaker, diluteto approximately 75 mL with water, and adjust the pH toapproximately 5.0 by the addition of acetic acid (Note 1). Add4 drops of the PAN indicator solution. Titrate the sample withCuSO4solution to a transition in color from yellow to red.NOTE

    10、1Removal of soap fatty acids by filtration through a wet filterpaper prior to titration will sharpen the end point.6. Calculation6.1 Calculate the percentage of EDTA disodium salt in thesample as follows:EDTA, weight % 5 AB/C! 3 100 (1)where:A = millilitres of CuSO4solution required for titration of

    11、the sample,B = grams of EDTA disodium salt equivalent to 1 mL of theCuSO4solution, andC = grams of sample used.7. Precision and Bias7.1 The following criteria should be used for judging theacceptability of results (95 % probability):1This test method is under the jurisdiction of ASTM Committee D12 o

    12、n Soapsand Other Detergents, and is the direct responsibility of D12.12 on Analysis ofSoaps and Synthetic Detergents.Current edition approved May 26, 1989. Published June 1990. Originallypublished as D 1767 60. Last previous edition D 1767 62 (1984)e1.2Annual Book of ASTM Standards, Vol 11.01.3Reage

    13、nt Chemicals, American Chemical Society Specifications, AmericanChemical Society, Washington, DC. For suggestions on the testing of reagents notlisted by the American Chemical Society, see Analar Standards for LaboratoryChemicals, BDH Ltd., Poole, Dorset, U.K., and the United States Pharmacopeiaand

    14、National Formulary, U.S. Pharmacopeial Convention, Inc. (USPC), Rockville,MD.4Eastman Organic Chemical No. 7192 has been found satisfactory for thispurpose.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.7.1.1 Liquid SoapDuplicate re

    15、sults by the same operatorshould not be considered suspect unless they differ by morethan 60.01 %. The overall reproducibility is 60.03 %.7.1.2 Synthetic DetergentsDuplicate results by the sameoperator should not be considered suspect unless they differ bymore than 60.01 %. The overall reproducibili

    16、ty is 60.02 %.8. Keywords8.1 copper sulfate titration; EDTA; ethylene diaminetetraacetateASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination o

    17、f the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn.

    18、 Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comm

    19、ents have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D 1767 89 (2003)2


    注意事项

    本文(ASTM D1767-1989(2003) Standard Test Method for Ethylene Diamine Tetraacetate (EDTA) in Soaps or Synthetic Detergents《肥皂或合成洗涤剂中乙二胺四乙酸盐(EDTA)含量的标准测试方法》.pdf)为本站会员(towelfact221)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