100 77 5 0 03 0 09 22 3855 0 1 fecl sub 3 0 95 0 4 5 0 20 0 30 0 1 iodine 100 92 25 0 02 0 09 7 6455 0 1 fecl sub 3 0 95 0 4 5 0 20 0 30 0 05 iodine 100 91 7 0 03 0 14 8 1355 0 1 fecl sub 3 0 95 0 4 5 0 20 0 30 0 02 sulphur 100 94 2 0 03 0 13 5 64__________________________________________________________________________ the example shows that p and o dichlorobenzene are consumed markedly during the chlorination with fecl 3 without addition of iodine or sulphur __________________________________________________________________________ triclb cl sub 2 more highlytemp catalyst consumed p dclb m dclb o dclb chlorinated benzenes u00b0 c by weight __________________________________________________________________________50 0 1 fecl sub 3 0 73 75 0 35 25 40 0 50 comparison 25 71 00 0 29 24 40 4 31 62 69 40 0 14 21 60 8 86 100 66 40 0 04 17 50 16 0675 0 1 fecl sub 3 0 73 75 0 35 25 40 0 50 comparison 20 70 90 0 33 23 60 5 17 40 69 60 0 24 21 70 8 46 100 64 40 0 06 15 30 20 2450 0 1 fecl sub 3 0 73 75 0 35 25 40 0 5 0 02 sulphur 50 73 40 0 100 24 40 2 1 75 73 30 0 050 23 70 2 95 100 73 00 0 025 23 00 3 950 0 1 fecl sub 3 0 73 75 0 35 25 40 0 50.