ASTM_D_912_-_81_1999.pdf

Designation:D 912 81(Reapproved 1999)Standard Specification forCuprous Oxide for Use in Antifouling Paints1This standard is issued under the fixed designation D 912;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 cuprous oxide for use inantifouling paints.2.Referenced Documents2.1 ASTM Standards:D 185 Test Methods for Coarse Particles in Pigments,Pastes,and Paints2D 283 Test Methods for Chemical Analysis of CuprousOxide and Copper Pigments23.Composition3.1 The pigment shall consist essentially of finely dividedcuprous oxide and shall conform to the following require-ments:Cuprous oxide,min,%97Total copper,calculated as Cu,min,%86Total reducing power as Cu2O,min,%97Metals other than copper,max,%0.5Combined chlorides,calculated as Cl,and sulfates,calculatedas SO4,max,%0.5Acetone-soluble matter,max,%0.5Stability:decrease in total reducing power after stability test,max,%2.0Coarse particles(total residue retained on a No.325(45-m)sieve),max,%0.5Total nitric acid insoluble residue on a No.200(75-m)sieve,max,%0.14.Sampling4.1 Two samples shall be taken at random from differentpackages from each lot,batch,days pack,or other unit ofproduction in a shipment.When no markings distinguishingbetween units of production appear,samples shall be takenfrom different packages in the ratio of two samples for each10 000 lb(5000 kg),except that for shipments of less than10 000 lb two samples shall be taken.At the option of thepurchaser,the samples may be tested separately or afterblending in equal quantities the samples from the sameproduction unit to form a composite sample.5.Test Methods5.1 Tests shall be conducted in accordance with the follow-ingASTM test methods.Test procedures not covered byASTMtest methods shall be mutually agreed upon between thepurchaser and the seller.5.2 Coarse ParticlesTest Methods D 185.5.3 Cuprous Oxide Content,Total Copper,Reducing Power,Other Metals,Chlorides,Sulfates,Acetone,Soluble Matter,and StabilityMethods D 283.6.Keywords6.1 antifouling paints;copper;cuprous oxideThe 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 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 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 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 ASTM 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 of ASTM Committee D-1 on Paintand Related Coatings,Materials,andApplications,and is the direct responsibility ofSubcommittee D01.31 on Pigment Specifications.Current edition approved Oct.30,1981.Published December 1981.Originallypublished as D 912 47 T.Last previous edition D 912 65(1975).2Annual Book of ASTM Standards,Vol 06.03.1Copyright ASTM,100 Barr Harbor Drive,West Conshohocken,PA 19428-2959,United States.