1、Designation:D92803(Reapproved 2017)Standard Specification forSodium Bicarbonate1This standard is issued under the fixed designation D928;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 parenthese
2、s indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers material suitable for use invarious washing,cleaning,and scouring processes,with orwithout soap as conditions demand,and where a mild
3、lyalkaline material is desired.(WarningThis material may behazardous if not properly managed.Precautionary informationfor the safe use,storage,and disposal of this material should bepreliminarily obtained from suppliers and others.In case ofpersonal accident with this material,apply appropriate firs
4、t aid;telephone nearest Poison Control Center for assistance,and getmedical attention immediately.)2.Referenced Documents2.1 ASTM Standards:2D501 Test Methods of Sampling and Chemical Analysis ofAlkaline Detergents3.Ordering Information3.1 Sodium bicarbonate shall be purchased by net weight.4.Chemic
5、al Composition4.1 Sodium bicarbonate(NaHCO3)as received shall con-form to the following requirements as to chemical composi-tion:Na2CO3,max,%0.4NaHCO3,min,%99.6Matter insoluble in water,max,%0.15.Other Requirements5.1 Sodium bicarbonate shall be a white,uniform powder.Any caking shall be capable of
6、being readily disintegrated.6.Methods of Sampling and Analysis6.1 The material shall be sampled and analyzed in accor-dance with Test Methods D501.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard.Users of
7、 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 committee and must be reviewed every five y
8、ears andif not revised,either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters.Your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 a meeting of theresponsible technical committ
9、ee,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 Drive,PO Box C700,West Conshohocken,PA 19428-2959,U
10、nited 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
11、secured from the Copyright Clearance Center,222Rosewood Drive,Danvers,MA 01923,Tel:(978)646-2600;http:/ specification is under the jurisdiction of ASTM Committee D12 on Soapsand Other Detergents and is the direct responsibility of Subcommittee D12.12 onAnalysis and Specifications of Soaps,Synthetics
12、,Detergents and their Components.Current edition approved Jan.1,2017.Published February 2017.Originallyapproved in 1947 as D928 47 T.Discontinued August 2001 and reinstated asD92803.Last previous edition approved in 2009 as D928 03(2009).DOI:10.1520/D0928-03R17.2For referenced ASTM standards,visit t
13、he 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.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United St
14、atesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1
