ASTM D3566-2003 Standard Practice for Rubber&8212 Determination of Bromine in the Presence of Chlorine by Oxygen Combustion《橡胶的标准实施规程 用氧燃烧法测定在氯存在时橡胶中的溴含量》.pdf
《ASTM D3566-2003 Standard Practice for Rubber&8212 Determination of Bromine in the Presence of Chlorine by Oxygen Combustion《橡胶的标准实施规程 用氧燃烧法测定在氯存在时橡胶中的溴含量》.pdf》由会员分享,可在线阅读,更多相关《ASTM D3566-2003 Standard Practice for Rubber&8212 Determination of Bromine in the Presence of Chlorine by Oxygen Combustion《橡胶的标准实施规程 用氧燃烧法测定在氯存在时橡胶中的溴含量》.pdf(3页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: D 3566 03Standard Practice forRubberDetermination of Bromine in the Presence ofChlorine by Oxygen Combustion1This standard is issued under the fixed designation D 3566; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, t
2、he 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 practice covers the determination of bromine andchlorine in rubber.1.2 This procedure is applicable t
3、o raw or cured NR, SBR,BR, IR, IIR, CIIR, BIIR, and EPDM rubbers and blends ofthese.1.3 Iodine interferes, but substances such as Zn2+,S,CN,and (CO3)2do not.1.4 The values stated in SI units are to be regarded as thestandard. The values in parentheses are for information only.1.5 This standard does
4、not purport to address all of thesafety concerns, if any, associated with its use. It is 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. Specific safetyprecautions are given
5、in Section 7.2. Referenced Documents2.1 ASTM Standards:2E 200 Practice for Preparation, Standardization, and Stor-age of Standard and Reagent Solutions for ChemicalAnalysisE 443 Test Method for Sulfur in Organic Compounds byOxygen Flask Combustion33. Summary of Practice3.1 Samples of rubber, wrapped
6、 in filter paper, are burned inan oxygen combustion flask containing an aqueous solution ofhydrogen peroxide and sodium bisulfite. The carbon andhydrogen of the organic matter are oxidized. The combustedsolution is titrated directly for bromine and chlorine.4. Significance and Use4.1 This practice o
7、utlines a method for the determination ofbromine and chlorine, alone or together.4.2 CIIR and BIIR rubbers contain small amounts of chlo-rine and bromine and CR rubbers contain large amounts ofchlorine. For quality control and research and development, itis sometimes necessary to determine the amoun
8、t of thesehalogens in rubber. This practice can be used for thesepurposes.5. Apparatus5.1 Oxygen Combustion Flask (Schniger Flask)Achemical-resistant,4thick-walled oxygen combustion flask,51000 cm3, with JS35/25 ball-joint stopper, platinum samplecarrier, and pinch clamp.5.2 Infrared Safety Igniter,
9、5,6with cabinet and infrared light(an electrical igniter is also satisfactory).5.3 Magnetic Stirring Bar, covered with a chemical-resistant coating,5,7approximately 25 mm (1 in.) long, withouta spinning ring around the center.5.4 Magnetic Stirrer.5.5 Filter Paper, 30 by 30 mm, with a 35-mm extension
10、,black5,8for infrared or white5,9for electrical ignition.5.6 pH Meter,10equipped with a billet-type silver elec-trode11and a calomel electrode, in which the potassiumchloride solution has been replaced by a saturated potassiumnitrate solution, or equivalent automatic titrator.1This practice is under
11、 the jurisdiction of ASTM Committee D11 on Rubber andis the direct responsibility of Subcommittee D11.11 on Chemical Analysis.Current edition approved Nov. 1, 2003. Published December 2003. Originallyapproved in 1977. Last previous edition approved in 2001 as D 3566 96 (2001).2For referenced ASTM st
12、andards, 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.3Withdrawn.4Borosilicate glass has been found satisfactory.5The sole source of suppl
13、y of the apparatus known to the committee at this timeis A. H. Thomas Co., Philadelphia, PA, Catalog No. 6514-F20. If you are aware ofalternative suppliers, please provide this information to ASTM InternationalHeadquarters. Your comments will receive careful consideration at a meeting of theresponsi
14、ble technical committee1, which you may attend.6The sole source of supply of the apparatus known to the committee at this timeis A. H. Thomas Co., Philadelphia, PA, Catalog No. 6516-G10.7Polytetrafluoroethylene has been found satisfactory.8The sole source of supply of the apparatus known to the comm
15、ittee at this timeis A. H. Thomas Co., Philadelphia, PA, Catalog No. 6514-F65.9The sole source of supply of the apparatus known to the committee at this timeis A. H. Thomas Co., Philadelphia, PA, Catalog No. 6513-C75.10A. Beckman pH meter Model SS-2 has been found satisfactory.1Copyright ASTM Intern
16、ational, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.6. Reagents6.1 Silver Nitrate Solution (0.001 M) must be freshly pre-pared. Pipet 10.0 cm3of standard120.1 M silver nitrate solutioninto a 1-dm3volumetric flask. Dilute to volume. Protect fromlight. Determin
17、e its molarity by titrating an accurately weighedsample of the reagent grade KCl or NaCl. Calculate themolarity as follows:Molarity 5 A 3 1000#/B 3 C! (1)where:A = grams of chloride weighed,B = molecular mass of chloride used, andC = titration volume, cm3.6.2 Sodium Bisulfite, 35 % in water,6.3 Hydr
18、ogen Peroxide, 3 % solution,6.4 Nitric Acid (6M).6.5 Aluminum Nitrate,6.6 Isopropyl Alcohol,6.7 Methyl Orange Indicator (1 % solution in methyl alco-hol), and6.8 Oxygen in Compressed Gas Cylinder.7. Safety Precautions7.1 The following safety precautions must be observed inthe combustion of rubber sa
19、mples:7.1.1 The flask shall not contain residues of organic solventsor vapor, which could cause an explosion. Any such solventsused for cleaning the flask should be rinsed out repeatedly withwater.7.1.2 The pressure generated by the rapid combustion couldcause the flask to explode. Therefore, combus
- 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。
最后一页预览完了!喜欢就下载吧,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:
- ASTMD35662003STANDARDPRACTICEFORRUBBER8212DETERMINATIONOFBROMINEINTHEPRESENCEOFCHLORINEBYOXYGENCOMBUSTION
![提示](http://www.mydoc123.com/images/bang_tan.gif)
链接地址:http://www.mydoc123.com/p-515014.html