1、Designation: D 3741 00 (Reapproved 2004)Standard Test Methods forAppearance of Admixtures Containing Halogenated OrganicSolvents1This standard is issued under the fixed designation D 3741; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revi
2、sion, 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 These test methods cover the visual determination of thephysical appearance of admixtures containin
3、g halogenatedhydrocarbons. These test methods are qualitative test methods.1.2 This standard does 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 determin
4、e the applica-bility of regulatory limitations prior to use.2. Significance and Use2.1 These test methods 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 sh
5、ould be selected so that the height of the 100-mLgraduation mark is 275 to 295 mm above the bottom of the 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 sho
6、uld be constructedso that white light is passed through or reflected off a whiteglass plate and directed 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
7、deposited on the bottom of the container.Transfer the sample to the tube and cap the tube.4.2 Place the 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 Repor
8、t extraneous contaminants as suspended or float-ing matter, sediments, 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; chlorinat
9、ed organic solvents; organic sol-vents; solventsTEST METHOD BUSING 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 deposi
10、ted on the bottom of the container. Ifthe sample is not in a clear, 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.9.2 Vigorously
11、 shake the sample again. Immediately placethe sample in front of a black background in a well-lightedarea. Examine for suspended particles, floaters, sediment,turbidity, foaming, or free water.10. Report10.1 Report extraneous contaminants as suspended or float-ing matter, sediments, turbidity, or fr
12、ee 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 extraneous matteron a quantitative basis.1These test methods are under the jurisdiction of ASTM Committee D26 onHalogenated Organic Solvents and Fire Extinguishin
13、g Agents and are the directresponsibility of Subcommittee D26.04 on Test Methods.Current edition approved Jan. 10, 2000. Published April 2000. Originallypublished as D 3741 85. Last previous edition D 3741 95.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19
14、428-2959, United States.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 expressly advised
15、 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 revised, either rea
16、pproved 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 may attend. If yo
17、u 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 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 3741 00 (2004)2
