-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
- Cosmetic Ingredient
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
In recent years, the scientific field has developed rapidly, in which rotary evaporator has become a commonly talked about object, often asked such a question: what is commonly used in the configuration and use of rotary evaporator precautions.
1, rotating evaporator commonly used configuration and use precautions 1), heating water bath pot: the general heating medium for clean water.
if there is a special need for temperature, it can be replaced with silicone oil or high temperature silicone oil! Although the manufacturer will be on the water bath pot with a lid, the use of the process is not high, static time, can prevent dust into the water bath or oil bath, keep the water bath or oil bath clean.
2), condenser: the general cooling medium is water.
if the ambient temperature is high and the condensation effect is not good, it can be replaced with an ethanol bath and the device is equipped with a circulating freezer.
the cooled ethanol, pressed into the condenser, for cooling treatment.
encounter very cold weather, static do not use, the condenser water should be drained overnight, to prevent water into a solid, volume expansion and cleavage condenser.
3), decompression equipment: often configured as a pump.
some high boiling point solvents, the pump can be replaced with an oil pump, pay attention to the equipment requirements when replacing.
2, rotating evaporator using skill rotary evaporator use experience, rotating evaporator use process, be sure to keep the water in the water bath, water in the pump and the entire device clean and clean.
1), in the use of rotating evaporation, the rotating bottle and the steamer are connected with the main body by high temperature silicone grease, and are accompanied by a plastic standard clip.
connection is not very strong, the use of steaming bottles often appear inside the water bath.
2), in the use of rotating evaporation, if there is a power failure, the water in the pump will be poured into the rotary steaming system.
3), in rotational evaporation, if the solvent boiling point is low, the steaming process, easy to appear, the rotary vapor in the steaming bottle will rush into the condensing tube, and then, into the receiving bottle.
above situation is always inevitable, if the steaming to keep clean, then the formation of oil and water mixture, or liquid solid mixture, can be filtered, concentrated refined rear column separation and other means, to get their own target products.
it's not clean, you wait to cry! On the market, rotary evaporators are used as pilot equipment, with a volume of 50L.
the operation used is not very different from that of the laboratory rotary evaporator.