1、Designation: D3741 00 (Reapproved 2015)1Standard Test Methods forAppearance of Admixtures Containing Halogenated OrganicSolvents1This standard is issued under the fixed designation D3741; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revis
2、ion, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1NOTEUnits statement was inserted in Section 1.2 editorially in June 2015.1. Scope1.1 These test methods cover th
3、e visual determination of thephysical appearance of admixtures containing halogenatedhydrocarbons. These test methods are qualitative test methods.1.2 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.3 This standard does not pu
4、rport 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.2. Significance and Use2.1 These test method
5、s are useful for determining theappearance of halogenated hydrocarbons and their admixtures.TEST METHOD AUSING NESSLER TUBES3. Apparatus3.1 Color Comparison Tube, 100-mL tall-form Nessler.Tubes should be selected so that the height of the 100-mLgraduation mark is 275 to 295 mm above the bottom of th
6、e tubewith ground glass cap.3.2 Viewing Stand, constructed to permit visual observationof light transmitted through the Nessler tube in the direction ofits longitudinal axis. The viewing stand should be constructedso that white light is passed through or reflected off a whiteglass plate and directed
7、 with uniform intensity through thetube, and should be shielded so that no light enters the tubefrom the side.4. Procedure4.1 Vigorously shake the sample to distribute any solidmatter that may be deposited on the bottom of the container.Transfer the sample to the tube and cap the tube.4.2 Place the
8、tube in the viewing stand. Observe the samplethrough the longitudinal direction of the tube, looking forsuspended particles, floaters, sediment, turbidity, foaming, orfree water.5. Report5.1 Report the following information:5.1.1 Report extraneous contaminants as suspended or float-ing matter, sedim
9、ents, turbidity, or free water.6. Precision and Bias6.1 This is a pass/fail test. It is not the intent of this testmethod to provide a method for determining extraneous matteron a quantitative basis.7. Keywords7.1 appearance; chlorinated organic solvents; organic sol-vents; solventsTEST METHOD BUSIN
10、G A CLEAR, COLORLESSGLASS BOTTLE8. Apparatus8.1 Clear, Colorless Sample Bottle.8.2 White Background and Black Background, in well-lighted area.9. Procedure9.1 Vigorously shake the sample to distribute any solidmatter that may be deposited on the bottom of the container. Ifthe sample is not in a clea
11、r, colorless bottle, transfer it to onein an exhaust hood. Immediately place the sample in front of awhite background in a well-lighted area. Examine for sus-pended particles, floaters, sediment, turbidity, or free water.1These test methods are under the jurisdiction of ASTM Committee D26 onHalogena
12、ted Organic Solvents and Fire Extinguishing Agents and are the directresponsibility of Subcommittee D26.04 on Test Methods.Current edition approved June 1, 2015. Published June 2015. Originallyapproved in 1985. Last previous edition approved in 2010 as D3741 00(2010).DOI: 10.1520/D3741-00R15E01.Copy
13、right ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States19.2 Vigorously shake the sample again. Immediately placethe sample in front of a black background in a well-lightedarea. Examine for suspended particles, floaters, sediment,turbidity, foamin
14、g, or free water.10. Report10.1 Report the following information:10.1.1 Report extraneous contaminants as suspended orfloating matter, sediments, turbidity, or free water.11. Precision and Bias11.1 This is a pass/fail test. It is not the intent of this testmethod to provide a method for determining
15、extraneous matteron a quantitative basis.12. Keywords12.1 appearance; chlorinated organic solvents; organic sol-vents; solventsASTM 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
16、expressly advised that determination of 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 re
17、vised, either reapproved or withdrawn. 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
18、may attend. If you feel that your comments 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 S
19、tates. 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 00 (2015)12
