1、Designation:D125707(Reapproved 2012)Standard Specification forHigh-Gravity Glycerin1This standard is issued under the fixed designation D1257;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in paren
2、theses 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 high-gravity glycerin(98.7weight%,minimum)for use in the manufacture of alkyd andother synthetic resins.1.2 The following appli
3、es 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 accordance withthe rounding-off method of Pra
4、ctice E29.1.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.4 For specific hazard information and guidance,see thesuppliers Material Safety Data Sheet for materials listed in thisspecification.2.Referenced Documents2.1 ASTM
5、Standards:2D1258 Test Methods for High-Gravity Glycerin(Withdrawn2011)3E29 Practice for Using Significant Digits in Test Data toDetermine Conformance with Specifications2.2 U.S.Federal Standard:PPP-C-2020 Chemicals,Liquid,Dry,and Paste:Packagingof43.Properties3.1 The glycerin shall conform to the fo
6、llowing require-ments:Apparent specific gravity,min:15.6/15.6C(60/60F)1.2620or25/25C1.2587Color,Pt-Co scale,max20Sulfate ash,max,weight%0.1Acid value,max,mg KOH per g ofmaterial0.3_4.Test Methods and Sampling4.1 The material shall be sampled and the properties enu-merated in this specification deter
7、mined in accordance withTest Method D1258.5.Packaging and Package Marking5.1 Package size to be agreed upon between the purchaserand supplier.5.2 Packaging shall conform to applicable carrier rules andregulations or when specified shall conform to Fed.Spec.PPP-C-2020.6.Keywords6.1 high-gravity glyce
8、rins1This specification is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings,Materials,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.Ori
9、ginallyapproved in 1979.Last previous edition approved in 2007 as D1257 07.DOI:10.1520/D1257-07R12.2For 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
10、 Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.4Available from Standardization Documents Order Desk,DODSSP,Bldg.4,SectionD,700RobbinsAve.,Philadelphia,PA19111-5098,http:/www.dodssp.daps.mil.*A Summary of Changes section appears at
11、 the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 SUMMARY OF CHANGESCommittee D01.35 has identified the location of selected changes to this standard since the last issue(D1257-90(2001)that may impact the use of thi
12、s standard.(Approved June 1,2007.)(1)Added referenced to Practice E29 in Scope section.(2)Added Practice E29 to list of Referenced Documents.(3)Changed specs limits for apparent specific gravity in 3.1.ASTM International takes no position respecting the validity of any patent rights asserted in conn
13、ection with any 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 responsibl
14、e technical 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 conside
15、ration at 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 Har
16、bor 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).Permission rights to photocopy the standard may also be secured from the ASTM website(www.astm.org/COPYRIGHT/).D1257 07(2012)2
