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Cooling bath. A typical experimental setup for an aldol reaction. Both flasks are submerged in a dry ice/acetone cooling bath (−78 °C) the temperature of which is being monitored by a thermocouple (the wire on the left). A cooling bath or ice bath, in laboratory chemistry practice, is a liquid mixture which is used to maintain low ...
Ethanol is the oldest known sedative, used as an oral general anesthetic during surgery in ancient Mesopotamia and in medieval times. [15] [16] Mild intoxication starts at a blood alcohol concentration of 0.03-0.05 % and induces anesthetic coma at 0.4%. [24] However, this use carried the high risk of deadly alcohol intoxication and pulmonary ...
Azeotrope tables. This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point ( b.p.) of a component, the boiling point of a mixture ...
Chaim Weizmann was born in the village of Motal, located in what is now Belarus and at that time was part of the Russian Empire in 1874. He was the third of 15 children born to Oizer and Rachel (Czemerinsky) Weizmann. [1] His father was a timber merchant. [2]
アセトン (acetone) は有機溶媒として広く用いられる有機化合物で、もっとも単純な構造のケトンである。IUPAC命名法では プロパン-2-オン (propan-2-one) あるいは単にプロパノン。
Chloroacetone may be synthesized from the reaction between chlorine and diketene, or by the chlorination of acetone. Applications. Chloroacetone is used to make dye couplers for colour photography, and is an intermediate in chemical manufacturing. It is also used in the Feist-Benary synthesis of furans.
Acetone azine can be prepared from acetone and hydrazine: [3] 2 (CH 3) 2 CO + N 2 H 4 → 2 H 2 O + [ (CH 3) 2 C=N] 2. It can also be produced from acetone (2 eq.), ammonia (2 eq.) and hydrogen peroxide (1 eq.). [4] The first step is the formation of acetone imine, Me 2 C=NH; this is then oxidized by hydrogen peroxide through a complex ...
