1、Designation:D 456 85(Reapproved 1997)Standard Specification forCaustic Soda(Anhydrous)1This standard is issued under the fixed designation D 456;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 pa
2、rentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This specification covers material suitable for variouswashing,cleaning,and scouring processes,with or withoutsoap as conditions demand,and where a st
3、rongly alkalinematerial is desired.1.2 This material may be hazardous if not properly man-aged.1.3 Precautionary information for the safe use,storage,anddisposal of this material should be preliminarily obtained fromsuppliers and others.1.4 In case of personal accident with this material,applyapprop
4、riate first aid;telephone the nearest Poison ControlCenter for assistance,and get medical attention immediately.2.Referenced Documents2.1 ASTM Standards:D 501 Test Methods of Sampling and Chemical Analysis ofAlkaline Detergents23.Ordering Information3.1 Caustic soda(anhydrous)shall be purchased by n
5、etweight.4.Chemical Composition4.1 Caustic soda(anhydrous),as received,shall conform tothe following requirements as to chemical composition:Total alkalinity as Na2O,min,%75.5Sodium hydroxide(NaOH),min,%96Carbonate as Na2CO3,max,%25.General Requirements5.1 Caustic soda(anhydrous)shall be furnished i
6、n air-tightcontainers in flake,coarsely powdered,or solid form asspecified by the purchaser.6.Sampling and Analysis6.1 The material shall be sampled and analyzed in accor-dance with Test Methods D 501.7.Packaging and Labeling7.1 The material shall be packaged and labeled in confor-mity with local,st
7、ate,and Federal requirements.The American Society for Testing and Materials takes no position respecting the validity of any patent rights asserted in connectionwith any item mentioned in this standard.Users of this standard are expressly advised that determination of the validity of any suchpatent
8、rights,and the risk of 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by the responsible technical committee and must be reviewed every five years andif not revised,either reapproved or withdrawn.Your comments are invited either for
9、 revision of this standard or for additional standardsand should be addressed to ASTM Headquarters.Your comments will receive careful consideration at a meeting of the responsibletechnical committee,which you may attend.If you feel that your comments have not received a fair hearing you should make
10、yourviews known to the ASTM Committee on Standards,100 Barr Harbor Drive,West Conshohocken,PA 19428.This standard is copyrighted by ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.Individualreprints(single or multiple copies)of this standard may be obtained by contacting AST
11、M at the above address or at 610-832-9585(phone),610-832-9555(fax),or serviceastm.org(e-mail);or through the ASTM website(http:/www.astm.org).1This specification is under the jurisdiction ofASTM Committee D-12 on Soapsand Other Detergents and is the direct responsibility of Subcommittee D 12.14 onSp
12、ecifications for Analysis of Inorganic Alkaline Detergents.Current edition approved May 31,1985.Published July 1985.Originally pub-lished as D 456 37 T.Last previous edition D 456 39(1983).2Annual Book of ASTM Standards,Vol 15.04.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.NOTICE:This standard has either been superseded and replaced by a new version or discontinued.Contact ASTM International(www.astm.org)for the latest information.
