ASTM_E_2012_-_06_2012.pdf

Designation:E201206(Reapproved 2012)Standard Guide forthe Preparation of a Binary Chemical Compatibility Chart1This standard is issued under the fixed designation E2012;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.INTRODUCTIONThe purpose of this standard is to provide expert guidance to those interested in the task ofcompiling chemical compatibility(inter-reactivity)charts for the purposes of process safety andreactive chemicals hazard evaluation.This standard does not provide specific answers regarding theinter-reactivity of specific materials.However,it does provide a detailed framework for developingcharts based on the current best practices of the chemical industry and it directs the user to sourcesof reactivity information.It is the E27 Committees belief that inter-reactivity charts will beincreasingly used in industry for day-to-day operations,process hazard reviews,employee education,and emergency response.It is our hope that this standard guide can be useful in that effort.1.Scope1.1 A binary chemical compatibility chart also called inter-reactivity chart,documents the hazards associated with themixing of pairs of materials.This guide provides an aid for thepreparation these charts.It reviews a number of issues that arecritical in the preparation of such charts:accurate assessmentof chemical compatibility,suitable experimental techniques forgathering compatibility information,incorporation of user-friendliness,and provision for revisions.1.2 The uses of chemical compatibility charts are summa-rized in this standard.1.3 This guide also reviews existing public domain compat-ibility charts,the differences therein,and their advantages anddisadvantages.1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.2.Referenced Documents2.1 ASTM Standards:2E537 Test Method for The Thermal Stability of Chemicalsby Differential Scanning CalorimetryE698 Test Method for Arrhenius Kinetic Constants forThermally Unstable Materials Using Differential Scan-ning Calorimetry and the Flynn/Wall/Ozawa MethodE1231 Practice for Calculation of Hazard Potential Figures-of-Merit for Thermally Unstable MaterialsPS168 Proposed Guide for Estimating the Incompatibility ofSelected Hazardous Wastes Based on Binary ChemicalReactions32.2 NFPA Standard:4NFPA 491 Guide to Hazardous Chemical Reactions3.Terminology3.1 Definitions:3.1.1 compatibility,adjthe ability of materials to exist incontact without specified(usually hazardous)consequencesunder a defined scenario.3.1.2 scenario,na detailed physical description of theprocess whereby a potential inadvertent combination of mate-rials may occur.4.Summary of Guide4.1 Abinary chemical compatibility chart indicates whether,under a given set of conditions(the scenario)the combinationof two materials does or does not yield a specified undesiredconsequence.4.2 Asummary of the guide follows.Determine the scenariofor the determination of compatibility and the degree of1This guide is under the jurisdiction of ASTM Committee E27 on HazardPotential of Chemicals,and is the direct responsibility of Subcommittee E27.02 onThermal Stability and Condensed Phases.Current edition approved Dec.1,2012.Published December 2012.Originallyapproved in 1999.Last previous edition approved in 2006 as E2012 06.DOI:10.1520/E2012-06R12.2For 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.3Withdrawn.This chart was subsequently adopted by the U.S.EPAand is widelyavailable by way of the Internet.4Available from National Fire Protection Association(NFPA),1 BatterymarchPark,Quincy,MA 02169-7471,http:/www.nfpa.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 reaction that constitutes incompatibility.Both should be iden-tified in the documentation for the chart.Define the materialswithin the scope of the chart.Define the test,calculation orjudgment that is used to make a decision.List the materials asboth columns and rows of a grid.At the intersections of thegrid note whether the materials are compatible.To avoidduplicate entries,a triangular chart is required.If a decision oncompatibility was not by the standard means(as defined by theuser)or the scenario differs,indicate by footnote the basis forthe decision or the change in scenario.The chart should bedated and the author identified.See Fig.1 for an example of abinary compatibility chart.5.Significance and Use5.1 Various United States governmental regulations forbidincompatible materials to be transported together and require