Analgesics, Pharmaceutical Formulations
Phenacetin, Salicylic Acid, Acetylsalicylic Acid - Silica
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 |
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Operating
Conditions |
Sample Dissolved in: iso-octane/methylene chloride
Adsorbent Used: DAI Silica 32-63
Stationary Phase: 10% water
Eluent: iso-octane: methylene chloride =
7:3 + 2% acetic acid
Sample Volume: 1 ml
Flow rate: 11 ml/min
Operating Pressure: 40.6 psi
Column Size: 9mm x 300 mm
Temperature: 20ºC
Detection: UV detector 253 nm
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|
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Substances
Separated |
Sample (mg) |
Retention Volume
(ml) |
|
1. benzene |
1.75 |
11 |
|
2. salicylic acid |
0.5 |
55 |
3. acetylsalicylic
acid |
0.5 |
128 |
|
4. phenacetin |
0.05 |
690 |
|
Phenacetin, Salicylic Acid, Acetylsalicylic Acid - Silica
|
 |
|
Operating
Conditions |
Sample Dissolved in: di-isopropyl ether
Adsorbent Used: DAI Silica 32-63
Stationary Phase: 10% water
Eluent: di-isopropyl ether + 2% acetic acid
Sample Volume: 1 ml
Flow rate: 8 ml/min
Operating Pressure: 28 psi
Column Size: 9mm x 300 mm
Temperature: 20ºC
Detection: UV detector 251 nm
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|
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Substances
Separated |
Sample (mg) |
Retention Volume
(ml) |
|
1. salicylic acid |
0.5 |
16 |
|
2. acetylsalicylic acid |
0.5 |
24 |
|
3. phenacetin |
0.5 |
144 |
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