Through calculating the critical parameter and relative data of methyl chloride high pressure thermal chlorination, the phase of this reaction has been analyzed with some conclusion being obtained.
It can also be prepared by reaction of bromochloromethane with sodium thiocyanate to obtain chloromethyl thiocyanate, and then it reacts with 2-mercapto-benzothiazole.
The researchers start off by drying their coffee grounds overnight and then pour in some common chemical solvents, such as hexane, ether and dichloromethane, to dissolve the oils.
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4. 研究者称氯处理过的水的副产品三卤甲烷（THM)，是一种致癌化学物，会增加患疾病风险。
Researchers say cancer-causing chemicals called trihalomethanes (THM) are created as a byproduct of chlorinating water and increase the risk of the disease developing.
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5. 他们坚信手机是“一种致癌物质”，将其危害等同于铅毒、发动机排气及三氯甲烷。
They determined that mobile phones are a " possible carcinogen, " listing use of the devices in the same category as lead, engine exhaust and chloroform, CNN reported.
Through the investigation and analysis of a case of acute occupational trichloromethane poisoning, to put forward preventive measures and prevent the occurrence of similar incidents.
Experimental results were reported here regarding the gas phase conversion of CTC to methyl chloride by using transition metal salt composite catalyst embedded on active carbon.
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9. 目的：建立一种气相色谱法测定原料药头孢唑肟钠中二氯甲烷和四氢呋喃有机溶剂残留量的方法。
Objective: We detected the content of methylene chloride and diethylene oxide in Ceftizoxime Sodium using head-space GC method.
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10. 由于四氯甲烷具有一定的毒性会破坏人体及动物肝脏，并且会破坏臭氧层。
Because the toxicity of tetrachloromethane would destroy certain human and animal liver, and damage the ozone layer.
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11. 催化烷基氯和苯的反应，其中二氯甲烷和苯反应得到5倍量的单一产物二苯甲烷。
This system also can catalyze the reaction of benzene with alkyl chloride, in which only the desired diphenylmethane is isolated in good yield (5 equiv. ).
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12. 所以四氯甲烷的解离电离过程一直都受到人们的重视。
Therefore, dissociation of tetrachloromethane ionization process has been subject to attention.
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13. 四氯甲烷也是一种较常见的化工原料，是一种良好的有机溶剂，在化学实验中常被作为萃取剂等。
Tetrachloro-methane is also a common good chemical organic solvent; and often used as the extractive agent in chemical experiments.
Ring opening reaction of 2, 3-epoxy ketones with nitric oxide in dichloromethane occurred in a syn-selective fashion, producing syn-2-hydroxy nitrates as main products.
Objective: Using the headspace Gas - chromatography methods to measure the assay of residual solvent (acetone, ethylene chloride and ethanol) in Cefazolin sodium.
The scavenging agent for scavenging the chewing gum residual consists of carbon disulfide, methylene dichloride, ethyl acetate, span-80, cyclohexanone, sodium dodecyl benzene sulfonate and water.
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18. 一定的五氟乙烷与一氯二氟甲烷的组合物，作为加热或冷却的液体时具有非凡的效率和容量。
Certain compositions of pentafluoroethane and chlorodifluoromethane have unusual efficiency and capacity as fluids for heating and cooling.
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19. 抛射剂为三氯一氟甲烷、二氯二氟甲烷、二氯四氟乙烷、氮气和二氧化碳中的至少一种。
The propellent is at least one of trichlorofluoromethane, dichlorodifluoromethane, dichlorotetrafluoroethane, nitrogen and carbon dioxide.
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20. 抛射剂为三氯一氟甲烷、二氯二氟甲烷、二氯四氟乙烷、氮气和二氧化碳中的至少一种。
The propellent is at least one of trichlorofluoromethane, dichlorodifluoromethane, dichlorotetrafluoroethane, nitrogen and carbon dioxide.
