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Names | |||
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Preferred IUPAC name
Methyl benzoate | |||
Systematic IUPAC name
Methyl benzenecarboxylate | |||
Identifiers | |||
CAS Number |
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3D model (JSmol) |
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ChEMBL |
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ChemSpider |
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ECHA InfoCard | 100.002.055 ![]() | ||
PubChem CID |
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UNII |
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CompTox Dashboard (EPA) |
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InChI
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SMILES
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Properties | |||
Chemical formula Xem thêm: h2s ra k2s |
C8H8O2 | ||
Molar mass | 136.150 g·mol−1 | ||
Density | 1.0837 g/cm3 | ||
Melting point | −12.5 °C (9.5 °F; 260.6 K) | ||
Boiling point | 199.6 °C (391.3 °F; 472.8 K) | ||
Magnetic susceptibility (χ) |
−81.95×10−6 cm3/mol | ||
Refractive index (nD) |
1.5164 | ||
Hazards | |||
NFPA 704 (fire diamond) | ![]() 2 | ||
Flash point | 82 °C (180 °F; 355 K) | ||
Safety data sheet (SDS) | ScienceLab MSDS | ||
Related compounds | |||
Related compounds
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references |
Methyl benzoate is an organic compound. It is an ester with the chemical formula C6H5CO2CH3. It is a colorless liquid that is poorly soluble in water, but miscible with organic solvents. Methyl benzoate has a pleasant smell, strongly reminiscent of the fruit of the feijoa tree, and it is used in perfumery. It also finds use as a solvent and as a pesticide used đồ sộ attract insects such as orchid bees.
Synthesis and reactions[edit]
Methyl benzoate is formed by the condensation of methanol and benzoic acid, in presence of a strong acid.[1][2]
Methyl benzoate reacts at both the ring and the ester, depending on the substrate. Electrophiles attack the ring, illustrated by acid-catalysed nitration with nitric acid đồ sộ give methyl 3-nitrobenzoate. Nucleophiles attack the carbonyl center, illustrated by hydrolysis with addition of aqueous NaOH đồ sộ give methanol and sodium benzoate.
Occurrence[edit]
Methyl benzoate can be isolated from the freshwater fern Salvinia molesta.[3] It is one of many compounds that is attractive đồ sộ males of various species of orchid bees, which apparently gather the chemical đồ sộ synthesize pheromones; it is commonly used as bait đồ sộ attract and collect these bees for study.[4]
Cocaine hydrochloride hydrolyzes in moist air đồ sộ give methyl benzoate;[5] drug-sniffing dogs are thus trained đồ sộ detect the smell of methyl benzoate.[6]
Uses[edit]
Non electric Heat cost allocators. See: DIN EN 835.
Xem thêm: c2h2+ag2o
References[edit]
- ^ Maki, Takao; Takeda, Kazuo. "Benzoic Acid and Derivatives". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a03_555..
- ^ John McMurry (2008). Organic Chemistry (7th ed.). Thompson - Brooks/Cole. p. 623. ISBN 978-1-4390-4972-3.
- ^ Choudhary, MI; Naheed, N; Abbaskhan, A; Musharraf, SG; Siddiqui, H; Atta-Ur-Rahman (2008). "Phenolic and other constituents of fresh water fern Salvinia molesta". Phytochemistry. 69 (4): 1018–23. doi:10.1016/j.phytochem.2007.10.028. PMID 18177906.
- ^ Schiestl, F.P.; Roubik, D.W. (2003). "Odor Compound Detection in Male Euglossine Bees". Journal of Chemical Ecology. 29 (1): 253–257. doi:10.1023/A:1021932131526. hdl:20.500.11850/57276. PMID 12647866. S2CID 2845587.
- ^ Dejarme, Lindy E.; Gooding, Rachel E.; Lawhon, Sara J.; Ray, Prasenjit; Kuhlman, Michael R. (1997). "Formation of methyl benzoate from cocaine hydrochloride under different temperatures and humidities". In Works, George; Rudin, Leonid I; Hicks, John; et al. (eds.). Proceedings of SPIE. SPIE Proceedings. Vol. 2937. p. 19. doi:10.1117/12.266783. S2CID 95964809.
- ^ Waggoner, L. Paul; Johnston, James M.; Williams, Marc; Jackson, Jan; Jones, Meredith H.; Boussom, Teresa; Petrousky, James A. (1997). "Canine olfactory sensitivity đồ sộ cocaine hydrochloride and methyl benzoate". In Works, George; Rudin, Leonid I; Hicks, John; et al. (eds.). Proceedings of SPIE. SPIE Proceedings. Vol. 2937. p. 216. doi:10.1117/12.266775. S2CID 93295016.
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