| |
| Types of Sil-Po Silica Gel: |
| Sil-Po Chemical is manufacturing three types of Sil-Po Silica Gel which
are given below: |
 |
Sil-Po Indicating Silica Gel |
|
Sil-Po Non-Indicating Silica Gel |
|
Sil-Po Chromatography Silica Gel |
|
| |
| What is Sil-Po Indicating Silica Gel? |
| Sil-Po Indicating Silica Gel is solid with grainy porous structure free from extraneous imparities and its color is Blue. The Sil-Po indicating Silica Gel is impregnated with Cobalt Chloride. |
| |
| What is Sil-Po Non-Indicating Silica Gel? |
| Sil-Po Non-Indicating Silica Gel is White, solid with grainy porous structure free from extraneous imparities. |
| |
| General Properties of Sil-Po Silica Gel (Indicating & Non-Indicating) |
| Sr. No. |
Specification |
IS-3401-1992 |
| 1 |
Bulk Density (gm/cc) |
0.55 to 0.65 |
| 2 |
Loss on Drying (wt %) at temp (110ºC) |
5 Maximum |
| 3 |
Adsorption Capacity |
Adsorbs minimum 27percent of moisture on the basis |
| 4 |
pH Value (at 25ºC) |
3.5 to 8 |
| 5 |
Chloride (as NaCl) |
|
| |
(a) Indicating Silica Gel
(Percent by mass) Max. |
0.4
|
| |
(b) Non-Indicating Silica Gel
(Percent by mass) Max. |
0.05
|
| 6 |
Cobalt (as CoCl2)
(For Indicating Silica Gel,
Percent by mass) Min. |
0.5
|
| 7 |
Ammonium Compounds
(as Nh3)
(Percent by mass) Max. |
0.001
|
| 8 |
Sulphate 5
(as Na2S04)
(Percent by mass)Max.
|
0.5
|
|
| |
| What is Sil-Po Chromatography Silica Gel? |
| Sil-Po Chromatography Silica Gel is powder form based on the scientific patent and manufacturing litratare as per it’s specification 12008-1986. Chromatographic grade
Silica Gel is mainly used for analytical purpose in thin layer Chromatography high performance liquid Chromatography and partition column Chromatography. |
| |
| Grades |
| Sil-Po Chromatography Silica Gel has two grades: |
|
for thin layer Chromatography |
|
for partition column Chromatography |
|
| |
| Grade-1 |
| Sil-Po Chromatography Silica Gel Grade 1 has two types: |
|
Silica Gel without binder |
|
Silica Gel with binder |
|
| |
| General properties of Silica Gel thin layer Chromatography |
| Sr. No. |
Characteristics |
Requirements |
| Specification: IS-12008-1986 |
| |
Type-1 |
Type-2 |
| 1 |
Particle size passing through 50
Micron is sieve % by mass |
97 |
97 |
| 2 |
pH of aqueous suspension (10%) |
5.5-7.7 |
6.0-7.5 |
| 3 |
Sodium (as Na), ppm Max. |
700 |
- |
| 4 |
Chloride (as Cl), ppm Max. |
200 |
200 |
| 5 |
Iron (as Fe), ppm Max. |
100 |
100 |
| 6 |
Loss on ignition % by mass Max. |
20 |
- |
| 7 |
Gypsum % by mass |
- |
12-14 |
|
| |
| General properties for Silica Gel for Partition Column Chromatography |
| Sr. No. |
Characteristic |
Requirements |
| 1 |
Particle size distribution between any mesh
(250/125 micron or150/75 micron is sieve)
Min. |
95 |
| 2 |
pH of aqueous suspensia |
5.5-7.0 |
| 3 |
Sodium (as Na), ppm Max. |
700 |
| 4 |
Chloride (as Cl), ppm Max. |
200 |
| 5 |
Iron (as Fe), ppm Max. |
100 |
|
