DHQ (1; ≥99.5%) was purchased from Zhengzhou Feng Yao Agricultural Science and Technology Co. (China). Acetic anhydride (≥99.8%), anhydrous pyridine (≥99.5%), and butyryl chloride (≥99.0%) were ...

The Kansas Highway Patrol says that shortly after 9 a.m., a truck hauling anhydrous ammonia overturned on the highway near Delavan and is currently blocking both lanes of traffic. The patrol says ...

Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637009, China ...

ethyl ether anhydrous [32] followed by chloroform: acetone, (9:1, v/v, saturated tank) [21,32]; c)ethyl ether anhydrous [32] followed by toluene: ethyl acetate: chloroform: formic acid (7:5:5:2, v/v, ...

Samples were treated sequentially with acetone:ethanol (1:3, v/v), acetone:ethanol (1:1, v/v), acetone:ethanol (3:1, v/v), and 100% acetone for 17 min. The dehydration step was repeated in 100% ...