text: U[2.'Toxicchemicals' means: chemicals [however orwherever theyareproduced], [whether produced inplants,munitions orelsewhere] [regardless ofthemethodandpatternof production] whosetoxicproperties canbeutilized tocausedeathor temporary orpermanent harm,tomanoranimals involving:] U[2.'Toxicchemicals' means: anychemical, regardless ofitsoriginormethodofproduction which throughitschemical actiononlifeprocesses cancausedeath,temporary incapacitation, orpermanent harmtomanoranimals "Toxicchemicals aredividedintothefollowing categories:] "(a)/super-toxic lethalchemicals', whichhaveamedianlethaldose whichislessthanorequalto0.5mg/kg(subcutaneous administration) or 2,000mg-min/m3 (byinhalation) whenmeasured byanagreedmethod*/set forthin••• U(b)'otherlethalchemicals', whichhaveamedianlethaldosewhich isgreater than0.5mg/kg(subcutaneous administration) or2,000mg-min/m3 (byinhalation) andlessthanorequalto10mg/kg(subcutaneous administration) or20,000mg-min/m3 (byinhalation) whenmeasured byan agreedmethodsetforthin ,,[(c)'otherharmful chemicals', being'any [toxic] chemicals not covered by(a)or(b)aboye,[including tOXicchemicals whichnormally causetemporary incapacitation ratherthandeath][atsimilar dosesto .thoseatwhichsuper-toxic lethalchemicals causedeath].] "[and'otherharmful chemicals' hasamedianlethaldosewhichis greater th~10mg/kg(subcutaneous administration) or20,000mg-min/m 3 (byinhalation).] "3.[Permitted purposes] [Purposes notprohibited bytheConvention] [Non-hostile purposes] means: "(a)industrial, agricultural, research, medical orotherpeaceful purposes, domestic lawenforcement purposes; andmilitary purposes not connected withtheuseofchemical weapons; "~/Itwasnotedthataftersuchmeasurements hadactually been performed, thefigures mentioned inthisandthefollowing section might besubjecttoslightchangesinordertocoversulphur mustard gasunder thefirstcategory. -44-ilh oved ament ze of d of h"(b)protective purposes, namelythosepurposes directly relatedto protection against chemical weapons; ~I "4. fPrecursor ,means: achemical reagent whichtakespartintheproduction ofatoxic chemical. "(a)'KeyPrecursor' means: aprecursor whichposesasignificant risktotheobjectives ofthe Convention byvirtueofitsimportance intheproduction ofatoxic chemical. "Itmaypossess [possesses] thefollowing characteristics: "(i)itmayplay[plays] animportant roleindetermining thetoxic properties ofa[toxicchemioals prohibited bythe Convention] [super-toxic lethalchemioal]. n(11)itma~rbeusedinoneoftheohemical reaotions atthefinal stageofformation ofthe[toxicchemicals prohibited bythe Convention] [super-toxic lethalchemical]. se rn[(iii)itmay[is]notbeused.or[is]usedonlyinminimal quantities, forpermitted purposes.] ~I :h m3nKeyprecursors arelistedin••• nForthepurpose.oftherelevant provisions inaChemical Weapons Convention keypreoursors shouldbelistedandsubjeottorevisions according to[oharacteristics] [guidelines]. "Chemicals whioharenotkeypreoursors butaredeemedtoposea [threat] [particular risk]withregardtoaChemical Weapons Convention shouldbeincluded inalist. "[(b)Keycomponent ofbinaryandlormultioomponent ohemioal systems forchemical weapons means:] n[akeyprecursor whichformsatoxicohemical inthebinaryor multicomponent weapons munition ordeviceandwhiohhas thefollowing additional oharacteristios (tobeelaborated)~l n*1Thesuggestion thatsuohpermitted protective purposes should relate-only to'anadversary's useof'chemioal weapons wasremoved pending adecision onwhetherintheConvention the,question ofprohibiting other military preparations foruseofchemical weapons thanthosementioned under soopeshouldbedealtwith. n**1Onedelegation oonsiders thatthispartioular oharacteristio has primarY-importance andshouldbeplacedfirst. -45-'1 I "5.'Chemical weapons production facility' means: "_Chemical weapons production. facility means[anybuilding or equipment designed, constructed orused[inanydegree] fortheproduction ofchemical weapons] orforfilling chemical weapons. "_Chemical weapons production facility means[anybuilding or anyequipment whichinanydegreewasdesigned, constructed orused since1'January1946,for: "(a)theproduction forchemical weaponsofanytoxicchemical, exceptforthoselistedin(schedule B),ortheproduction forchemical
analysis: The text appears to be related to the regulation and control of toxic chemicals, their production, and the prevention of their use as weapons. The language used is technical and formal, suggesting a legal or international framework. The categories mentioned, such as "super-toxic lethalchemicals" and "key precursors", imply a focus on safety and security. The text also mentions "chemical weapons production facility" and "Convention", which suggests that it is related to international agreements and treaties.