ASTM_D_1325_-_94_2000.pdf

Designation:D 1325 94(Reapproved 2000)Standard Specification forAmmoniacal Copper Arsenate and Ammoniacal Copper ZincArsenate1,2This standard is issued under the fixed designation D 1325;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 parentheses 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 ammoniacal copper arsenatesolution for use in the preservative treatment of wood.2.Referenced Documents2.1 ASTM Standards:D 1326 Test Method for Chemical Analysis of AmmoniacalCopper Zinc Arsenate32.2AWPA Standard:AWPA P5 Standards for Waterborne Preservatives43.Composition and Properties3.1 The ingredients of ammoniacal copper arsenate solution(ACA)shall be present in the following proportions:MinimumNominalCopper,calculated as CuO,%47.749.8Arsenic,calculated as As2O5,%47.650.23.2 The ingredients of ammoniacal copper zinc arsenate(ACZA)solution shall be present in the following proportions:Copper,calculated as CuO,%45.050.0Arsenic,calculated as As2O5,%22.525.0Zinc,calculated as ZnO,%22.525.03.3 The ingredients listed in 3.1 for ACA shall be dissolvedin an aqueous solution of ammonia of a strength such that theammonia content of the solution will be 1.38 times the coppercontent when copper is calculated as CuO.To aid in solution,not over 1.7%of the total active ingredients(CuO+As2O5)of glacial acetic acid may be added.3.4 The ingredients listed in 3.2 for ACZA shall be dis-solved in a solution of ammonia to copper oxide ratio of 1.38:1(wt.basis).It is necessary to add ammonium bicarbonate(NH4HCO3)at least equal to 0.92 times the weight of copper oxide.3.5 The solid preservative or treating solution shall be madeup of water soluble compounds selected from the followinggroups each in excess of 95%purity on an anhydrous basis:Bivalent copper(for example,cupric hydroxide)Pentavalent arsenic(for example,arsenic acid)Zinc oxide(for example,zinc oxide)4.Chemical Analysis4.1 The material shall be analyzed in accordance withMethods D 1326.5.Keywords5.1 ammoniacal copper arsenateASTM 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 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 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 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 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).1This specification is under the jurisdiction of the ASTM Committee D-7 onWood and is the direct responsibility of Subcommittee D07.06 on Treatments forWood Products.Current edition approved July 15,1994.Published September 1994.Originallypublished as D 1325-54T.Last previous edition D 1325-76(1992)e1.2This specification is identical with the Standards for Ammoniacal CopperArsenate(ACA)in Section 2 and Ammoniacal Copper Zinc Arsenate(ACZA)inSection 3 of the American Wood-Preservers Assn.Standards for WaterbornePreservatives(P5-92).Acknowledgment is made to theAmerican Wood-PreserversAssociation for its development of the subject matter covered in this specification.3Annual Book of ASTM Standards,Vol 04.10.4Available from American Wood-Preservers Association,P.O.Box 286,Wood-stock,MD 21163-0286.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.