ASTM_D_1625_-_71_2000.pdf

Designation:D 1625 71(Reapproved 2000)Standard Specification forChromated Copper Arsenate1This standard is issued under the fixed designation D 1625;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.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.1 This specification covers chromated copper arsenateformulations expressed on the oxide basis,either in solid,paste,or solution form for use in the preservative treatment ofwood.2.Referenced Documents2.1 ASTM Standards:D 1628 Test Methods for Chemical Analysis of ChromatedCopper Arsenate22.2Other Standard:AWPA P5 Standards for Waterborne Preservatives33.Composition and Properties3.1 Chromated copper arsenate preservative formulationsshall have the composition,calculated as the oxides of chro-mium,copper,and arsenic,as shown in Table 1.The physicalform may be a dry solid,semi-liquid paste,or solution.3.2 The composition of each preservative,or the preserv-ative present in a treating solution,may vary within the limitsof composition shown in Table 2.3.3 The preservative or treating solution shall be made up ofwater-soluble compounds,selected from the following groups,each in excess of 95%purity on an anhydrous basis:Hexavalent chromiumfor example,potassium or sodium dichromate,chro-mium trioxideBivalent copperfor example,copper sulfate,basic copper carbonate,cupricoxide or hydroxidePentavalent arsenicfor example,arsenic pentoxide,arsenic acid,sodiumarsenate or pyroarsenate3.4 The preservative shall be labeled as to its total content ofactive ingredients as specified in Table 1.4.Chemical Analysis4.1 The materials shall be analyzed in accordance with TestMethods D 1628.5.Keywords5.1 chromated copper arsenate1This specification is under the jurisdiction of ASTM Committee D-7 on Woodand is the direct responsibility of Subcommittee D07.06 on Treatments for WoodProducts.Current edition effective Feb.24,1971.Originally issued 1959.ReplacesD 1625 68.This specification is identical in substance with the Standards for Acid CopperChromate(ACC)in Sections 4,5,and 6 of the American Wood-PreserversAssociation Standards for Water-Borne Preservatives(P5-96).Acknowledgment ismade to the American Wood-Preservers Association for its development of thesubject matter covered in this specification.2Annual Book of ASTM Standards,Vol 04.10.3Available from American Wood-Preservers Association,3246 Fall CreekHighway,Suite 190,Granbury,TX 76049.TABLE 1 Requirements for Chromated Copper Arsenate(CCA)CompositionType AType BType CHexavalent chromium,calculated as CrO3,%65.535.347.5Bivalent copper,calculated as CuO,%18.119.618.5Pentavalent arsenic,calculated as As2O5,%16.445.134.0TABLE 2 Limits of CompositionCompositionType AType BType CminmaxminmaxminmaxHexavalent chromium,59.469.333.038.044.550.5calculated as CrO3,%Bivalent copper,16.020.918.022.017.021.0calculated as CuO,%Pentavalent arsenic,14.719.742.048.030.038.0calculated as As2O5,%1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.ASTM 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).D 16252