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Silica Gel for Column-layer Chromatography


Characteristics

It is white grains of homogeneous size. Its main ingredient is silicon dioxide. And it’s of high purity, secure and sanitary. Can be used to separate and refine mixed components because of its different adsorption duration on this silica gel.


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description

Use

For refinement of petrol products, removal of aromatic hydrocarbon material, separation and refinement of traditional Chinese herbal medicine components, preparation of high purity substance, etc.




Technical Data

ITEM

Specifications

Typical Values

Industrial Grade

Reagent Grade

Reagent Grade

Type 1

Type 2

Type 3

Type 4

Type 1

Type 2

Type 3

Type 4

Type 3

Specific surface area,/g

450

380-550

300-450

350

450

380-550

300-450

350

410

Pore volume, ml/g

0.35-0.5

0.6-0.8

0.8-1.0

1.0

0.35-0.5

0.6-0.8

0.8-1.0

1.0

0.9

Chlorides(Cl),w/%,≤

--

 0.02

0.008

Iron(Fe),w/%,≤

--

  0.02

0.0067

PH(100g/l water suspension)

Negotiable

Negotiable

6.7

Loss on heating, w/%,≤

5

5

2.2

Size,μm

Negotiable

Negotiable

100-200 mesh

Qualified size ratio, w/%,

60

60

80



Size

40-80mesh (180-450μm)        60-80mesh(180-280μm)    60-100mesh(154-280μm)

80-100mesh(154-180μm)       80-120mesh(125-180μm)   100-120mesh(125-154μm)

100-140mesh(110-154μm)     100-160mesh(98-154μm)     100-180mesh(180-250μm)

230-400mesh(38-63μm)       300-400mesh(38-54μm)      500-800mesh(15-30.8μm)