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Thorin is used as a reagent for the determination of thorium. It is also used as an indicator in the titrimetric determination of organic sulfur compounds and sulfate with Ba(ClO4)2.
D.A.Everest; J.V.Martin. The determination of thorium in ores with APANS-meso tartaric acid reagent after a shortened chromatographic separation. Analyst. 1957, 82, (981),807-811
J.Clinch. The colorimetric determination of thorium using 1-(o-arsonophenylazo)-2-naphthol-3:6-disulphonic acid. Analytica Chimica Acta. 1956, 14, 162-171
Hazard Statements: H301-H331
Toxic if swallowed. Toxic if inhaled.
Precautionary Statements: P261-P301+P310a-P304+P340-P311a-P405-P501a
Avoid breathing dust/fume/gas/mist/vapours/spray. IF SWALLOWED: IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.