Silica Gel for Column-layer Chromatography
The appearance is white grain of uniform size,
chief ingredient is silicon dioxide.
It is highly pure, secure and sanitary, usually used for separating
and refining mixed components due to different absorption
duration. Concretely, refining petrol products, removing aromatic
hydrocarbon material, separating and refining the effective
components of Chinese herbal medicine and preparation of high
purity substance, etc.
Technical Data:
| ITEM |
Index |
| Type
I |
Type
II |
| Type |
ZCX-1 |
ZCX-2 |
ZCX-3 |
ZCX-1 |
ZCX-2 |
ZCX-3 |
| Chlorides(Cl),
%≤ |
0.02 |
|
| Iron(Fe),
%≤ |
0.02 |
|
| pH(100g/l
water suspension) |
6.0-7.0 |
6.0-8.0 |
| Lead(Pb),
%≤ |
0.001 |
|
| Arsenic(As),
%≤ |
0.0003 |
|
| Heavy
metals (by Pb), %≤ |
0.003 |
|
| Loss
on heating, %≤ |
3.0 |
5.0 |
| Specific
surface, m2/g |
≥550 |
300-550 |
200-300 |
≥
550 |
300-550 |
200-300 |
| Pore
volume, ml/g |
≤0.70 |
0.70-0.90 |
≥0.85 |
≤0.70 |
0.70-0.90 |
≥0.85 |
| Granularity
eligibility, %≥ |
>150μ
75-150μ 50-75μ <50μ
80 80 60 60 |
>150μ
75-150μ 50-75μ <50μ
80 80 60 60 |
| Granularity,
mm |
To
be decided upon buyers requirements |
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