ImageVerifierCode 换一换
格式:PDF , 页数:3 ,大小:91.37KB ,
资源ID:179376      下载积分:13 积分
快捷下载
登录下载
邮箱/手机:
温馨提示:
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)。 如填写123,账号就是123,密码也是123。
特别说明:
请自助下载,系统不会自动发送文件的哦; 如果您已付费,想二次下载,请登录后访问:我的下载记录
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,免费下载
 

温馨提示:由于个人手机设置不同,如果发现不能下载,请复制以下地址【https://www.wnwk.com/docdown/179376.html】到电脑端继续下载(重复下载不扣费)。

已注册用户请登录:
账号:
密码:
验证码:   换一换
  忘记密码?
三方登录: QQ登录  

下载须知

1: 本站所有资源如无特殊说明,都需要本地电脑安装OFFICE2007和PDF阅读器。
2: 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。
3: 文件的所有权益归上传用户所有。
4. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途。
5. 本站仅提供交流平台,并不能对任何下载内容负责。
6. 下载文件中如有侵权或不适当内容,请与我们联系,我们立即纠正。
7. 本站不保证下载资源的准确性、安全性和完整性, 同时也不承担用户因使用这些下载资源对自己和他人造成任何形式的伤害或损失。

版权提示 | 免责声明

本文(ASTM_D_3634_-_99_2015.pdf)为本站会员(益****师)主动上传,蜗牛文库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,请立即通知蜗牛文库(发送邮件至admin@wnwk.com或直接QQ联系客服),我们立即给予删除!

ASTM_D_3634_-_99_2015.pdf

1、Designation:D363499(Reapproved 2015)Standard Test Method forTrace Chloride Ion in Engine Coolants1This standard is issued under the fixed designation D3634;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A n

2、umber in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 This test method covers the determination of chlorideio

3、n in engine coolants in the range from 5 to 200 ppm in thepresence of up to 0.6 weight%mercaptobenzothiazole.1.2 Other materials that react with silver ion will interfere.1.3 Chloride in engine coolants containing an aryltriazoleinstead of mercaptobenzothiazole can be determined directlyby this test

4、 method without pretreatment with hydrogen per-oxide.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibili

5、ty 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.Specific hazardsstatements are given in Section 7.2.Referenced Documents2.1 ASTM Standards:2D1176 Practice for Sampling and Preparing Aqueous

6、Solu-tions of Engine Coolants orAntirusts for Testing PurposesD1193 Specification for Reagent WaterE200 Practice for Preparation,Standardization,and Storageof Standard and Reagent Solutions for Chemical Analysis2.2 Manufacturing Chemists Association Document:3MCA Chemical Safety Data Sheet SD-533.Su

7、mmary of Test Method3.1 The sample is first treated at a pH of 12 to 13 withaqueous hydrogen peroxide to oxidize the mercaptobenzothi-azole to soluble,noninterfering sulfonate.The treated sample isdissolved in glacial acetic acid and titrated potentiometricallywith dilute standard silver nitrate sol

8、ution.Since the solubilityof silver chloride in this system is sufficient to preventobtaining a suitable inflection at the very low limit of the testmethod,some chloride is deliberately added to the glacialacetic acid solvent and then corrected for by a blank titration.4.Significance and Use4.1 This

9、 test method permits the determination of very lowlevels of chloride ion in engine coolants containing thecommon corrosion inhibitor,mercaptobenzothiazole,or relatedmercaptans,which would normally interfere with the titrationby also forming insoluble silver salts with silver nitrate.5.Apparatus5.1 M

10、anual Titrations:5.1.1 pH MeterAn expanded scale pH meter which can beread to 1 or 2 mV is desirable but not required.A silver billetindicator electrode4and glass reference electrode5are used forthe chloride titration.The silver electrode should be polishedoccasionally with fine steel wool or scouri

11、ng powder andthoroughly rinsed.5.1.2 Buret,10-mL,micro,Class A,calibrated in 0.02-mLdivisions.5.1.3 Beakers,electrolytic,250-mL tall form.5.2 Automatic Titrators are satisfactory for this test method,provided they exhibit resolution and accuracy equivalent tothat specified for manual titrations.1Thi

12、s test method is under the jurisdiction of ASTM Committee D15 on EngineCoolants and Related Fluids and is the direct responsibility of SubcommitteeD15.04 on Chemical Properties.Current edition approved May 1,2015.Published June 2015.Originallyapproved in 1977.Last previous edition approved in 2009 a

13、s D3634 99(2009).DOI:10.1520/D3634-99R15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3Available from the Manuf

14、acturing Chemists Association,1825 ConnecticutAve.,Washington,DC 20009.4The sole source of supply of the Silver Billet Electrode known to the committeeat this time is Fisher Scientific(,Catalog No.13-620-122).If youare aware of alternative suppliers,please provide this information to ASTMInternation

15、al Headquarters.Your comments will receive careful consideration at ameeting of the responsible technical committee,1which you may attend.5The sole source of supply of the reference electrode known to the committee atthis time is Fisher Scientific(,Catalog No.13-620-216).If youare aware of alternati

16、ve suppliers,please provide this information to ASTMInternational Headquarters.Your comments will receive careful consideration at ameeting of the responsible technical committee,1which you may attend.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.3 Pipets,10,20,and 100-mL,Class A.5.4 Flask,Erlenmeyer,250 mL,with a 24/40 standard taper,female ground glass joint.5.5 CondenserThe condenser shall be of the water-cooled,reflux,glass-tu

copyright@ 2008-2023 wnwk.com网站版权所有

经营许可证编号:浙ICP备2024059924号-2