The chemical itself, dichloromethane
R40, is not a banned substance.
Afterward, about 200 mL aqueous Na2SO4 (2.5 g per 100 mL) and dichloromethane
(25 mL) were sequentially added to the above separatory funnel followed by vigorous shaking for two minutes.
The samples including methanol extract and n-hexane, dichloromethane
, ethyl acetate and water fractions were subjected to qualitative phytochemical screening for the presence of various phytochemicals i.e.
A recently published report on the Global Dichloromethane
Market 2019, which features reliable and detailed information about the Dichloromethane
along with a future forecast for the period 2019-2024.
"In the future, we will go on to explore the environmentally friendly and renewable organic solvent which can replace the dichloromethane
used in the hydrogenolysis of cellulose to '2,5-hexanedione,'" he said.
Paper filter discs (6 mm) saturated with 20 [micro]L of every extract (n-hexane, dichloromethane
, ethyl acetate and methanol) of Valeriana parviflora, V.
macrosperma herb (OMH) 156.44[+ or -]4.71 (*) SD: Standard deviation, EtOH: Ethanol, DCM: Dichloromethane
, EtOAc: Ethyl acetate, BuOH: n-butanol Table 2.
chilensis had the highest average polyphenols content in the dichloromethane
and ethyl acetate extracts (221.67 [+ or -] 7.50 and 154.55 [+ or -] 18.26 mg GAE [g.sup.-1] d.e., respectively) (Fig.
Subsequently, Sitepu, Al-Ghamdi, and Zaidi (2017)  described that the gas chromatography mass spectrometry (GCMS) analysis results of the hydrocarbon (dichloromethane
soluble part) showed diesel with the carbon range (C10 to C27), which suggests the minor portion of the oil-based type of sludge deposits was a diesel.
Other reagents such as chloroform, dichloromethane
and nitrobenzene, and ethanol were purchased from Carlo Erba Reagents, France.
, ethyl acetate, chloroform, n-hexane, and carbon disulfide from Xilong Chemical Factory (Shantou, China) or Tianjin General Chemical Reagent Factory (Tianjin, China) were tested to select the most optimal extraction reagent.
The solvents that were obtained from Sigma (South Africa) for extraction were n-hexane, dichloromethane
, and methanol (reagent grade).