INTERNATIONAL STANDARD I NTERNATIONAL ORGANIZATION FOR STANDARDIZATION MEXWHAPOiX4AR OPTAHI I 3AUUff I ,0 CTAH~APTI 1 3AWfH ORGANISATION INTERNATIONALE DE NORMALISATION Cryol i te (natural and arti fi[.]
I N TE RN ATI ON S TAN AL D ARD I N TE RN ATI ON AL ORG AN I ZATI ON Cryol i te g ravi met ri c ed i ti on S TAN D AR D I ZATI ON ( n atu ral al u mi n i u m Fi rst FOR - M E XWH AP Oi X4 AR an d - t en t OP TAH I I AU U f f arti fi ci al ) - I,0 CTAH ~ AP TI AWf H ORG AN I S ATI ON I N TE RN ATI ON ALE Det ermi n at i on DE N OR M ALI S ATI ON of 8- h yd roxyq u i n ol i n e met h od 972- 2- : , - ai‘ g, f’ p& p, E &j i i ; - , : “s / ‘ L ; gi 6; : ( ‘ s!p~-p $ +y w&, * J LLL -‘ j ‘ :A ,’ ‘m I ‘ &: z , g - f e G U DC 661 : 553 634 : 546 621 : Ref 543 21 N o I S0 23 67- 972 ( E) P OY Descri ptors : met al l i ferou s mi n eral s, al u m i n i u m ores, cryol i te, ch emi cal an al ysi s, g ravi met ri c an al ysi s, d et ermi n at i o n of t en t , al u mi n i u m 6, R Pri ce v) bas ed on pag e s F OR E WOR D I S0 of ( th e i n tern ati on al n ati on al I n tern ati on al Me mb e r up th e Draft to an d I n ternati on al th e Me mb e r St an d ard s by I n tern ati on al th e It approved a I S0 that in adopt ed for I S0 wh i ch Co mmi t t e e by approval th e wi t h I SO, th ei r I S0 23 67 t ake part in are as was d rawn up by Tech n i cal in N o ve mbe r 971 by th e Me mb e r Bo d i es of set th e work ci rcu l at ed I n tern ati on al Co mmi t t e e th e fol l owi n g Swi t zerl an d I srael Be l g i u m I tal y Th l an d Can ad a Net h erl an d s Tu r key Arab Rep New of I rel an d Spai n on Bo d i e s t ech n i cal of th e g rou n d s Yu g osl avi a Afri ca, fol l owi n g Rep cou n t ri es I n di a Or g an i zat i on Swi t zer l an d for St an d ard i zat i on , 72 of expressed : Pol an d i n t ern at i on al Ki n g d o m U S S R Ro man i a Sou t h Me mb e r Un i t ed Zeal an d Port u g al Hu n g ary in been org an i zati on s, Co mmi t t e e s accept an ce Eve r y h as : Ge r man y Pr i n t e d d evel opi n g Cou n ci l Fran ce al so Au st ri a d o cu men t federati on of Co mmi t t e e s Co mmi t t e e I n ternati on al Tech n i cal before wo rk Tech n i cal a Tech n i cal l i son a worl d wi d e Th e Ch emi st r y Eg ypt , Th e on is Bod i es) th rou g h for n on - g overn men t al , St an d ard s St an d ard i zat i on ) Me mb e r ou t su bj ect represen ted St an d ard 47, was be for ( I S0 carri ed in Bo d i es l SO/TC cou n t ri es is i n terested ri g ht g overn men t al to i n sti tu tes St an d ard s Bo d y h as Org an i zat i on st an d ard s l d i sapproval of th e I S0 7- 72 Neu tral ( E) red , g /i eth an ol i c to sol u ti on boi l i n g fi l ter Di sso l ve to 0, 05 00 ml g wi th of n eu tral th e sam e red in 95 eth an ol % an d ( V/V) eth an ol , d i l u te an d m i x poi n t, th rou g h th e ( 8) AP P ARATU S th e sol u ti on , aci d Ord i n ary l aboratory apparatu s d i sh , appro xi matel y 30 El e ctri c 750 25 d i ameter mm, approxi mate l y fi tted fu rn ace, ad d ed wi th a capabl e 75 pl ati n u m of mm, d epth beaker l i d bei n g an d th e trol l ed at ‘ C in on an d ti m e s Wash wi th th e mi n , th e th en beaker boi l i n g wash tri fq u i n ol i n - 8- oxi d e) th e for paper fi l trate fi l ter m i xi n g for sol u ti on 50 ml by ml of ( 400 su l ph i te ( 2) , to th e th e ml , an d , m e an s of th e of th e a boi l i n g h yd ro ch l o ri c tartari c for a th e aci d an d red, th en , wh i l e tu rn s ml sol u ti on th e 40 fi n al l y ml 50 su i tabl e th e so d i u m red sol u ti on sol u ti on abou t th e th e sol u ti on th e to th e Tran sfer amm o n i a h eat of in of of Di l u te u n ti l of ml g n eu tral th en warm water 2) th e ( 2) wi th beaker ad d yel l o w an d sol u ti on an d a cau ti ou sl y, sti rri n g , ( 3) ( see an d of fi l ter wash i n g i n to i n d i cator aci d th e preci pi tati on d rops 200 aceti c sol u ti on an d e xampl e ) fe w appro xi mate l y th e Was h sol u ti on fi rst sl o wl y u n ti l Ad d porti on s q u an ti tati vel y capaci ty ( 6) sm al l col l e ct u se d ( 1 ) ( 9) ten th e al u mi n i u m by si m m e r an d water Pl ati n u m of preci pi tate sol u ti on an d fi l ter to d i scard prepared ( 0) , ei g h t an d Preci pi tati on Di sso l ve sti rri n g , med i u m- g rad e preci pi tate sol u ti on wh i l e a 70 i n d i cator ‘ C tu rn s 8- h yd roxyq u i n ol i n e th e am m o n i u m acetate P RO CE D U RE sol u ti on 70 Te st We i g h , ‘C ( 4) for th e n earest 0, l mg , 0, 500 g of th e d ri ed of I SO/R Fi l ter Preparati on of preci pi tate between th e test in an th e pyrosu l ph ate mi x wi th pl ati n u m ( ) a d i sh Ad d pl ati n u m th e ( ) test spatu l a g porti on Co ve r of th e ( ) th e d i sh po tassi u m an d wi th at care fu l l y i ts lid a porti on s th e e l e ctri c 30 fu rn ace ( 2) of 750 f at th e wh i ch th e of is 25 th e no temperatu re d i sh th e fl oor th ere fro m th e “ C, taki n g su l ph u ri c pl ate u n ti l Th en ad d th e lid is care th e f 25 sol u ti on ml of of at to “C i sol ate th e ( 3) for to 30 at th e th e th e in th e in d i sh wh ol e tran sfer q u an ti ty th e vo l u m etri c sol u ti on oven “C th e an d at a si n tered 5pm) , 30 ‘C g l ass pre vi o u sl y an d cru ci bl e wei g h ed cool ed in a after d esi ccator, n ear sam e to ti m e wi th Ad d fu m e s boi l i n g taki n g d i sh Leave a q u an ti tati vel y i n to care to u n ti l oven to ( 60 to ven ti l ated ei g h t 70 by ti m e s “ C) wi th water Dry vecti on th e after cru ci bl e cool i n g fro m to th e ambi en t oven , pl ace it temperatu re, in a d esi ccato r we i g h th e m as s is i t Ch e ck stan t to E XP RE S S I ON Al u m i n i u m OF RE SU L TS ten t, percen tag e by m ass, e xpre ssed by th e as Al , is g i ven , as a formu l a ri n se co l l ecti n g sl i g h tl y 250 an si x tepi d of ce ase s poi n t cool a in Was h of h ot ( 4) water, to h ml th e ml on sol u ti on warm fro m h eat aci d aci d for su cti on to Mai n tai n Wi th d raw r IO m, th e of d i sh su pport an d su l ph u ri c d i sh a mi n cool h yd roch l ori c of of i mpu ri ti es to temperatu re wal l s m e an s l eave wh i te th e a by i n trod u ci n g an d compl e te, an d of 750 evol u ti on Heat sol u ti on th e at aci d IO d i sh fu rn ace ri sk fu rn ace wei g h i n g a th at fro m an d an d trol l ed an d , temperatu re on sl i g h t of Re m o ve in d ryi n g sol u ti on appl yi n g i n to wash i n g , tri ( q u i n ol i n - 8- oxi d e) th e d ryi n g pl ace approxi mate l y mi n Fi l trati on , ( porosi ty We i g h at 61 9) Determi n ati o n preci pi tate test ( see al u mi n i u m to porti on to sam pl e 30 Leave ml X 0, 058 X D X 00 an d = 5‘ 87 X D m0 on e- mark fl ask wh ere After cool i n g , d i l u te to th e m ark an d m i x D 2 Separati on of al u mi n i u m fro m i n terferi n g is th e ( ) e l e men ts rati o d etermi n ati on Take 50, O beaker of sol u ti on ml of th e su i tabl e ad d test sol u ti on capaci ty 40 ml of ( ) ( 250 ml , for or water, an d pl ace e xampl e ) d rops th i s To of in am m o n i a Th en th e ad d bl u e sol u ti on 20 am m o n i u m ml sol u ti on ( 5) of th e ben zoate ( 5) u n ti l bu ffer th e an d i n d i cator sol u ti on sol u ti on n eu tral i ze m th e ( 7) ( 6) Heat wi th tu rn s an d th e th e th e al i q u ot vo l u m e porti on of th e test taken sol u ti on for th e ( 2) ; a th e ml bromoph en ol between an d th e is th e is m as s, th e m ass , in g rams, in of g ram s, th e of test th e porti on wei g h ed ( ) ; al u mi n i u m tri ( q u i n ol i n - 8- oxi d e) ; vi ol et 20 ml of sol u ti on 0, 058 is th e tri ( q u i n ol i n - 8- oxi d e) co n ve rsi o n to factor al u mi n i u m fro m al u m i n i u m I S0 TE S T cl RE P ORT featu res u n u s u al an y 7- 72 n ot ed du ri ng ( E) th e determ i n ati on ; Th e test report shal l i ncl u de th e fol l owi n g parti cu l ars : d) a) b) th e th e referen ce resu l ts of an d th e the m et h od m et h od u sed; of express i on an y Stan dard, operati on or reg ard ed n ot as i n cl u ded in thi s I nternati onal opti on al u s ed;