ASTM_D_3507_-_97_2000.pdf

Designation:D 3507 97(Reapproved 2000)Standard Test Methods forPenetration of Preservatives in Wood and for DifferentiatingBetween Heartwood and Sapwood1This standard is issued under the fixed designation D 3507;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 These test methods cover procedures for determiningpenetration of preservatives in wood in cases where demarca-tion between the treated and untreated wood is not readilyvisible.Included are test methods for differentiating the heart-wood and the sapwood of wood samples for specific species,and a test method for differentiating the heartwoods betweenthe red oaks and the white oaks.1.2 The procedures appear in the following order:ProcedureSectionsPenetration of Arsenic-Containing Preservatives6-8Penetration of Copper-Containing Preservatives9-11Penetration of Fluoride-Containing Preservatives12-15Penetration of Pentachlorophenol Using 4,48-bis-Dimethylamino-Triphenylmethane(DMTM)16-20Penetration of Pentachlorophenol Using a Silver-Copper ComplexKnown as“Penta-Check”21-24Penetration of Solvent Used With Oil-Soluble Preservatives25-28Penetration of Zinc-Containing Preservatives29-32Differentiating between Sapwood and Heartwood in Pine Species(Pinus sp.)33-36Differentiating between Sapwood and Heartwood in Douglas Fir(Pseudotsuga menziesii)37-40Differentiating between Sapwood and Heartwood in White Fir(Abies concolor)41-44Differentiating Between Woods of the Red Oak and the White OakSpecies45-48Determination of Copper in Wood Using Rubeanic Acid49-52Determining Penetration of Copper-Containing Preservatives53-56Determination of the Presence of Hexavalant Chromium inTreated Wood57-611.3 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D 1193 Specification for Reagent Water2.2Other Standards:AWPA Standard A 3-84,Methods for Determining Penetra-tion of Preservatives and Fire Retardants3AWPA Standard M 2-83,for Inspection of Treated TimberProducts3AWPA Standard P 9-84,Standards for Solvents and For-mulations for Organic Preservative Systems33.Summary of Test Methods3.1 A specific chemical solution or powder for each preser-vative is applied to a wood specimen or cross section of woodto bring out a color that is distinctive for the particularpreservative.3.2 A chemical solution,specific for a species of wood,isapplied to a wood specimen or cross section of wood to bringout colors distinctive to sapwood and heartwood.4.Significance and Use4.1 Preservatives of the metallic series and oil solublepreservatives are not readily apparent in a cross section ofwood either due to similar color to the species of wood or lackof color of the preservative itself.Chemical staining of atreated specimen of wood reveals the presence of the preser-vative.4.2 The sapwood and heartwood of Douglas-Fir and thepine species can be differentiated by a chemical stain.1These test methods are under the jurisdiction of ASTM Committee D07 onWood and are the direct responsibility of Subcommittee D07.06 on Treatments forWood Products.Current edition approved March 10,1997.Published May 1997.Originallypublished as D 3507 76.Last previous edition D 3507 92.These test methods are substantially the same as AWPA Standards A 3 and M 2.2For 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 Summary page onthe ASTM website.3Available from American-Wood-Preservatives Assn.,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.5.Reagents5.1 Purity of ReagentReagent grade chemicals shall beused in all tests.Unless otherwise indicated,it is intended thatall reagents shall conform to the specifications of the Commit-tee on Analytical Reagents of the American Chemical Society,where such specifications are available.4Other grades may beused,provided it is first ascertained that the reagent is ofsufficiently high purity to permit its use without lessening theaccuracy of the determination.5.2 Purity of WaterUnless otherwise indicated,referencesto water shall be understood to mean reagent water conformingto Specification D 1193,Type I or II.PENETRATION OF ARSENIC-CONTAININGPRESERVATIVES6.Apparatus6.1 Balance.6.2 Atomizers(Optional)3.6.3 Medicine Dropper.7.Reagents7.1 Ammonium Molybdate(NH4)6Mo7O244 H2O).7.2 o-Anisidine.7.3 Hydrochloric Acid(sp gr 1.19)Concentr