Iron Oxide

Iron Oxide

COMMON NAME IRON OXIDE BROWN IRON OXIDE BLACK IRON OXIDE YELLOW IRON OXIDE RED
Colour Index No. 77491/92/99 77499 77492 77491
Coloron Code FP001 FP002 FP003 FP004
EEC No. E-172 E-172 E-172 E-172
CAS No. 1309-37-1/51274-00-1/1309-38-2 1309-38-2 51274-00-1 1309-37-1
ldentification of Ferric Salt As per USP As per USP As per USP As per USP
Water soluble substance, (% Mass MAX) 1 1 1 1
Acid insoluble substances, (% Mass MAX) 0.3 0.3 0.3 0.3
Organic Colors & Lakes As per USP As per USP As per USP As per USP
Mercury (As 'Hg') PPM (MAX) 3 3 3 3
Arsenic (AS 'As') PPM (MAX) 3 3 3 3
Lead (AS 'Pb') PPM (MAX) 10 10 10 10
Assay as Fe2o3 on ignited basis 97.0%-100.5% 97.0%-100.5% 97.0%-100.5% 97.0%-100.5%
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