Separating material for thin layer chromatography
AssigneeMerck Patent Gesellschaft mit beschraenkter Haftung
InventorsHerbert Halpaap, Walter Reich, Johannes Ripphahn
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Abstract
A separating material for thin layer chromatography comprising an inert substrate coated with a sorption agent consisting essentially of silica gel particles about 3 to 8 .mu.m in diameter in a layer 100-300 .mu.m thick.
Claims12
In a separating material for thin layer chromatography comprising a flat inert substrate having superimposed thereon a 100-300 .mu.m thick layer of a sorption agent, wherein the improvement comprises said sorption agent consisting essentially of silica gel particles of which at least 80% are 3 to 8 .mu.m in diameter, and not more than about 10% of said silica gel being either below 3 .mu.m or about 8 .mu.m, and the weight related specific surface area of said silica gel particles is 0.5-0.7 m.sup.2 /g.
In a separating material for thin layer chromatography comprising a flat inert substrate having superimposed thereon a 100-300 .mu.m thick layer of a sorption agent, wherein the improvement comprises said sorption agent being a silica gel composition consisting essentially of 85 to 99% of a silica gel of which at least 80% are 3 to 8 .mu.m in diameter with a weight related specific surface area of between 0.5 to 0.7 m.sup.2 /g., 0.1 to about 10 weight % of a binding agent and 0.5 to 5 weight % of an indicator.
Dependencies are inferred from the claim text.