Silica Gel for Thin-layer Chromatography

Characteristics

This product is a white, high purity reagent silica gel with certain size distribution that is used for thin layer chromatography.

Extensively used for analysis and separation of various natural and synthetic substances. It is widely used for the qualitative and quantitative analysis of the main ingredients or small amount of impurities in medicines, pesticides, Chinese herbal medicines, organic chemical products, petrochemical products, cereals and foods, as well as for the purification and preparation of some substances.

Thin-layer Type H silica gel may also be used as the carrier of dry cleaning agents.

ITEM	H		HF254		Typical values
	Superior class	First class	Superior class	First class	H
Calcined gypsum(CaSO4.1/2H2O),%	-	-	-	-	--
Chloride (by Cl),% ≤	0.02	0.02	0.02	0.02	0.015
Iron(Fe),% ≤	0.015	0.020	0.015	0.020	0.003
pH (100g/L aqueous suspension)	6.0-7.0	6.0-7.0	6.0-7.0	6.0-7.0	6.3
Sift remainder (W=38μm),% ≤	4.0	8.0	4.0	8.0	2.3
Activity (1)	Three colors separated

ITEM	G		GF254		Typical values
	Superior class	First class	Superior class	First class	G
Calcined gypsum (CaSO4.1/2H2O),%	12.0-14.0	12.0-14.0	12.0-14.0	12.0-14.0	12.9
Chloride (by Cl),% ≤	0.02	0.02	0.02	0.02	0.017
Iron(Fe),% ≤	0.015	0.020	0.015	0.020	0.003
pH (100g/L aqueous suspension)	6.0-7.0	6.0-7.0	6.0-7.0	6.0-7.0	6.4
Sift remainder (W=38μm),% ≤	4.0	8.0	4.0	8.0	2.4
Activity (1)	Three colors separated

* The "three colors" shown in the table refer to BI-methyl yellow, sultan red and indigo.

Packaging: 500 g net per plastic bottle.