ASTM D2378-2007(2012) Standard Specification for Formaldehyde 50&x2009 % Grade Uninhibited and 37&x2009 % Grade Inhibited and Uninhibited《50%级非缓蚀剂甲醛和37%级非缓蚀剂及缓蚀剂甲醛的标准规格》.pdf

1、Designation: D2378 07 (Reapproved 2012)Standard Specification forFormaldehyde 50 % Grade Uninhibited and 37 % GradeInhibited and Uninhibited1This standard is issued under the fixed designation D2378; the number immediately following the designation indicates the year oforiginal adoption or, in the c

2、ase of revision, 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.1. Scope*1.1 This specification covers 50 % uninhibited formalde-hyde and 37 % uninhibited and inhibi

3、ted formaldehyde.1.2 The following applies to all specified limits in thisstandard; for purposes of determining conformance with thisstandard, an observed value or a calculated value shall berounded off “to the nearest unit” in the last right-hand digitused in expressing the specification limit, in

4、accordance withthe rounding-off method of Practice E29.1.3 The values stated in SI units are to be regarded asstandard. No other units of measurement are included in thisstandard.1.4 For specific hazard information and guidance, see thesuppliers Material Safety Data Sheet for materials listed in thi

5、sspecification.2. Referenced Documents2.1 ASTM Standards:2D891 Test Methods for Specific Gravity,Apparent, of LiquidIndustrial ChemicalsD1209 Test Method for Color of Clear Liquids (Platinum-Cobalt Scale)D2087 Test Method for Iron in Formaldehyde SolutionsD2194 Test Method for Concentration of Forma

6、ldehydeSolutionsD2379 Test Method for Acidity of Formaldehyde SolutionsD2380 Test Method for Methanol Content of FormaldehydeSolutionsD5386 Test Method for Color of Liquids Using TristimulusColorimetryE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE

7、300 Practice for Sampling Industrial Chemicals2.2 U.S. Federal Standard:PPP-C-2020 Federal Specification For Packaging ofChemicals, Liquid, Dry, and Paste33. Properties3.1 The physical and chemical properties of formaldehyde,50 % uninhibited and 37 % uninhibited and inhibited, shallconform to the re

8、quirements specified in Table 1.NOTE 1Instrumental Pt-Co color determined by Test Method D5386has been shown to have no statistically significant difference from Pt-Cocolor determined by Test Method D1209. However, it is not knownwhether formaldehyde was part of the sample set included in theinterla

9、boratory study.4. Sampling4.1 The material shall be sampled in accordance withPractice E300.5. Hazards5.1 Formaldehyde and formaldehyde solutions are toxic andexposure to them should be minimized to avoid acute effectsand possible sensitizing. Consult the suppliers Material SafetyData Sheet for spec

10、ific hazard information.6. Test Methods6.1 The properties enumerated in this specification shall bedetermined in accordance with the following ASTM testmethods:6.1.1 Apparent Specific GravityTest Methods D891.6.1.2 Formaldehyde ContentTest Method D2194.6.1.3 AcidityTest Method D2379.6.1.4 ColorTest

11、Method D1209 (see Note 1).6.1.5 IronTest Method D2087.6.1.6 Methanol ContentTest Method D2380.7. Packaging and Package Marking7.1 Package size to be agreed upon between the purchaserand supplier.1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materia

12、ls, and Applications and is the direct responsibility ofSubcommittee D01.35 on Solvents, Plasticizers, and Chemical Intermediates.Current edition approved July 1, 2012. Published September 2012. Originallyapproved in 1965. Last previous edition approved in 2007 as D2378 07. DOI:10.1520/D2378-07R12.2

13、For 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 U.S. Government Printing Office Superintendent

14、 of Documents,732 N. Capitol St., NW, Mail Stop: SDE, Washington, DC 20401, http:/www.access.gpo.gov.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States17.2 Packaging shall

15、conform to applicable carrier rules andregulations or when specified shall conform to Fed. Spec.PPP-C-2020.8. Keywords8.1 acidity; color; formaldehyde; methanolSUMMARY OF CHANGESCommittee D01.35 has identified the location of selected changes to this standard since the last issue(D2378 - 02) that ma

16、y impact the use of this standard. (Approved June 1, 2007.)(1) Added new Note 1 to Table 1.(2) Added Test Method D5386 to list of Referenced Docu-ments.(3) Referenced new Note 1 in 6.1.4.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any

17、 item mentionedin this standard. Users of this standard are 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

18、committee and must be reviewed every five years andif not revised, 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

19、 a meeting of theresponsible technical committee, which you 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 D

20、rive, 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

21、.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).TABLE 1 Physical and Chemical Properties of FormaldehydeFormaldehyde 50 % Grade Formaldehyde 37 % GradeApparent specific gravity at 25/25C 1.1470 1.1520 1.0749 1.1139Formaldehyde co

22、ntent, weight % 49.75 50.5 37.0 37.4Acidity, as formic acid, max, weight % 0.05 0.02Color, max, Pt-Co scale (Note 1) 10 10Iron, max, ppm (weight) 1.0 1.0Methanol content, max, weight % 1.5 as agreed upon between the purchaser and sellerAppearance clear and free of suspended matter clear and free of suspended matterD2378 07 (2012)2