a noxious colourless liquid widely used as a solvent, e.g. in paint strippers. Formula: CH2Cl2
Traditional name: methylene dichloride
methylene chloride in American English
noun
Chemistry
a colorless, volatile liquid, CH2Cl2, used chiefly as a solvent, as a refrigerant, and as a local anesthetic in dentistry
Also called: methylene dichloride, dichloromethane
Word origin
[1875–80]This word is first recorded in the period 1875–80. Other words that entered Englishat around the same time include: Diaspora, overdraft, slime mold, weekend, weekender
Examples of 'methylene chloride' in a sentence
methylene chloride
Methylene chloride, acetone, ethyl acetate, and methanol were used as extractants.
Agnieszka Bartmańska, Ewa Wałecka-Zacharska, Tomasz Tronina, Jarosław Popłoński, SandraSordon, Ewa Brzezowska, Jacek Bania, Ewa Huszcza 2018, 'Antimicrobial Properties of Spent Hops Extracts, Flavonoids Isolated Therefrom, andTheir Derivatives', Moleculeshttp://www.mdpi.com/1420-3049/23/8/2059. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The calculations were carried out in vacuo and in methylene chloride solution at different temperatures.
Gianfranco La Manna, Rosina Noto, Grazia Cottone 2008, 'Density Functional Theory Study of the Trans-Trans-Cis (TTC)â†Â'Trans-Trans-Trans(TTT) Isomerization of a Photochromic Spiropyran Merocyanine', Moleculeshttp://www.mdpi.com/1420-3049/13/6/1246/. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The growth inhibitory components were in the methylene chloride soluble fraction of the extract.
Peterson Chris J, Romanchuk Frieda E, Tsao Rong, Coats Joel R 2002, 'Plant growth regulatory effect and insecticidal activity of the extracts of the Treeof Heaven (Ailanthus altissima L.)', BMC Ecologyhttp://www.biomedcentral.com/1472-6785/2/1. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The triterpenes ursolic acid and oleanolic acid were isolated from the methylene chloride extract and identified.
Fernanda M. dos Santos, Maria Gorete de Souza, Antônio E. Miller Crotti, Carlos H.G. Martins, Sérgio R. Ambrósio, Rodrigo C. S. Veneziani, Márcio L. Andrade e Silva,Wilson R. Cunha 2012, 'Evaluation of antimicrobial activity of extracts of Tibouchina candolleana (melastomataceae),isolated compounds and semi-synthetic derivatives against endodontic bacteria', Brazilian Journal of Microbiologyhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200045. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Furthermore, the methanol extract had higher antibacterial activity compared to methylene chloride and the essential oil extracts.
Amal A Mohamed, Sami I Ali, Farouk K El-Baz 2013, 'Antioxidant and antibacterial activities of crude extracts and essential oils of Syzygiumcumini leaves.', PLoS ONEhttp://europepmc.org/articles/PMC3625181?pdf=render. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Study of extraction kinetics showed that after 4 hours lipophilic substances soluble in methylene chloride were taken almost completely.
Demyanenko DV, Demyanenko VG , Breusova SV 2016, 'DEVELOPMENT OF TECHNIQUES FOR QUANTITATIVE ANALYSIS OF LIME FLOWERS', Anali Mečnikìvsʹkogo Institutuhttp://www.imiamn.org.ua/journal/1_2016/PDF/8.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
In both methods, the methanol extract exhibited a higher activity than methylene chloride and essential oil extracts.
Amal A. Mohamed, Sami I. Ali, Farouk K. El-Baz 2013, 'Antioxidant and Antibacterial Activities of Crude Extracts and Essential Oils of Syzygiumcumini Leaves', PLoS ONE10.1371/journal.pone.0060269. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The concentration of methylene chloride ranged from 311.1–980.3 ppm (geometric mean 555.8 ppm), 30 seconds after the dispersion started.
Seung-Hyun Park, Eun-Kyo Chung, Gwang-Yong YI, Kwang-Jae Chung, Jung-Ah Shin, In-SeopLee 2010, 'A Study for Health Hazard Evaluation of Methylene Chloride Evaporated from the TearGas Mixture', Safety and Health at Workhttp://www.sciencedirect.com/science/article/pii/S2093791110110129. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Inversely, under higher intensity mixing and with an excess of methylene chloride, it was mainly composed of linear chains.
Nadia Hammami, Nathalie Jarroux, Mike Robitzer, Mustapha Majdoub, Jean-Pierre Habas 2016, 'Optimized Synthesis According to One-Step Process of a Biobased Thermoplastic PolyacetalDerived from Isosorbide', Polymershttp://www.mdpi.com/2073-4360/8/8/294. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)