ASTM_D_365_-_01_2011.pdf

Designation:D36501(Reapproved 2011)Standard Guide forSoluble Nitrocellulose Base Solutions1This standard is issued under the fixed designation D365;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()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide covers the testing of soluble nitrocellulosebase solutions that are made by dispersing various kinds andconcentrations of soluble nitrocellulose(cellulose nitrate)invarious solvent mixtures.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.3 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.For specific hazardstatements see Section 11.2.Referenced Documents2.1 ASTM Standards:2D301 Test Methods for Soluble Cellulose Nitrate(With-drawn 2011)3D333 Guide for Clear and Pigmented LacquersD1193 Specification for Reagent WaterD1200 Test Method for Viscosity by Ford Viscosity CupE300 Practice for Sampling Industrial Chemicals3.Significance and Use3.1 Since the desired specifications and compositions ofsoluble nitrocellulose base solutions vary greatly,these meth-ods are used to establish whether limits that shall be as agreedupon between the producer and the user have been met.4.Sampling4.1 Select the sampling method from those listed in PracticeE300.CONSISTENCY(VISCOSITY)5.Consistency Tests5.1 For Consistencies from 3 to 500 sDetermine theconsistency by falling-ball consistency test described in TestMethods D301 for those solutions having a consistency from 3to 500 s when tested in that apparatus.5.2 For Consistencies Less than 3 sDetermine the consis-tency by Test Method D1200 for those solutions having aconsistency of less than 3 s when tested in the falling-ballapparatus referred to in 5.1.5.3 For Consistencies over 500 sDetermine the consis-tency using the apparatus and procedure described in Sections6 and 7 for those solutions having a consistency greater than500 s when tested in the falling-ball apparatus referred to in5.1.6.Apparatus6.1 The consistency test apparatus,shown in Fig.1,shallconsist of the following:6.1.1 Glass Tube(preferably heat-resistant glass),450 6 1.5mm(2 6132in.)in inside diameter and 255 mm(10 in.)inlength,with marks 177 6 1 mm(5 6116in.)apart,the upperone being 75 mm(3 in.)from the top of the tube.NOTE1The steel ball can be removed(in order to leave the samematerial in the tube for a check run)by removing the lower stopper.However,a small air bubble is usually introduced in this way.It ispreferable to invert the tube,removing the guide to get the ball out.It isoften necessary to put a few drops of solvent in the guide lip to loosen itfrom the tube on account of the solution drying at the edge of the tube.When the latter method is used for removing the ball,a larger bubbletraverses the tube than when the former method is used,but a large bubblemoves sufficiently fast,even in a very viscous solution,to escape at the topin a few minutes,whereas small bubbles take hours to escape.6.1.2 Steel Ball,15.88 6 0.02 mm(0.625 6 0.001 in.)indiameter,and weighing 16.536 6 0.10 g.6.1.3 Aluminum Guide Cone of light gage aluminum(ap-proximately 0.5 mm(0.02 in.)in thickness)as shown in Fig.1.The orifice of the guide cone shall be 22 mm(78in.)indiameter,the conical portion 25 mm(1 in.)in height,thecylindrical portion 12.7 mm(12in.)in height,and the outside1This guide is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.55 on Factory Applied Coatings on Preformed Products.Current edition approved June 1,2011.Published June 2011.Originallyapproved in 1933.Last previous edition approved in 2005 as D365 01(2005).DOI:10.1520/D0365-01R11.2For 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.3The last approved version of this historical standard is referenced onwww.astm.org.4Borosilicate glass is satisfactory for this purpose.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 diameter shall be slightly under 50 mm(2 in.)so as to fitsnugly into the viscosity tube.6.1.4 Stoppers,made preferably of rubber and covered withtin foil.7.Procedure7.1 Fill the tube in any convenient manner whereby bubblesdo not form and no appreciable amount of solvent is lost.Onemethod is to immerse the lower end of the open tube in thesolution and t