Detail of "4180-23-8"

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CAS Number:
4180-23-8
Name:
Benzene,1-methoxy-4-(1E)-1-propen-1-yl-
Superlist Name:
trans-Anethole
Molecular Structure:
Formula:
C₁₀H₁₂O
Molecular Weight:
148.22
Deleted CAS:
109957-71-3,57131-42-7
Synonyms:
Anisole,p-propenyl-, (E)- (8CI);Benzene, 1-methoxy-4-(1-propenyl)-, (E)-;Benzene,1-methoxy-4-(1E)-1-propenyl- (9CI);(E)-1-(4-Methoxyphenyl)propene;(E)-1-p-Methoxyphenylpropene;(E)-Anethol;(E)-Anethole;1-Methoxy-4-[(1E)-1-propenyl]benzene;NSC 209529;trans-1-(4-Methoxyphenyl)-1-propene;trans-1-(p-Methoxyphenyl)-1-propene;trans-1-(p-Methoxyphenyl)propene;trans-1-p-Anisylpropene;trans-4-(1-Propenyl)anisole;trans-p-Anethole;trans-p-Methoxy-b-methylstyrene;
EINECS:
224-052-0
Density:
0.959 g/cm³
Melting Point:
20-21 °C(lit.)
Boiling Point:
237.5 °C at 760 mmHg
Flash Point:
88.4 °C
Solubility:
practically insoluble in water
Appearance:
clear colorless to pale yellow liquid
Hazard Symbols:
Xi
Risk Codes:
43
Safety:
36/37 Details

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Reference

Photochemical isomerization of trans-anethole, trans-isosafrole and geraniol: Photochemical isomerization of trans-anethole, trans-isosafrole and geraniol. Svendsen, A. Baerheim; Koning, H. M. J. A. (Dep. Pharmacognosy, State Univ. Leiden, Leiden 2300 RA, Neth.). Sci. Pharm., 51(4), 409-14 (English) 1983. CODEN: SCPHA4. ISSN: 0036-8709. DOCUMENT TYPE: Journal CA Section: 62 (Essential Oils and Cosmetics) Section cross-reference(s): 22, 30 Isomerization of the essential oil components trans-anethole [4180-23-8], trans-isosafrole [4043-71-4], and geraniol [106-24-1] in 1% concns. in pentane, was investigated by irradn. with UV light. Isomerization was dependent upon the wavelength and intensity of the UV light. The sources were a Hg lamp of 185-366 nm of relative low intensity and 8 Rayonet lamps of 254, 300, and 350 nm, resp. which had a very high light intensity; isomerization took place at a slower rate with the Hg source. Irradn. of trans-anethole with the slow reactor for 336 h resulted in 42.1% isomerization to cis-anethole [25679-28-1], whereas with the fast reactor at 254 nm 38.5, 54, and 52% cis isomer was formed after 1, 3, and 6 h, resp. At 300 nm 57.9 and 65.7% cis isomer was formed after 3 and 6 h, resp. At 350 nm 18.6, 37.6, and 51.8% cis somer was formed after 1, 3, and 6 h, resp. With the slow reactor, 48.2% cis-isosafrole [17627-76-8] was formed from the trans isomer after 162 h, while with the fast reactor, 51.0, 72.4, and 69.5% cis isomer was formed at 254 nm, 38.3, 71.1, and 74.4% at 300 nm, and 25.5, 52.6, and 76.1% at 350 nm, after 1, 3, and 6 h, resp. Thus, max. isomerization of trans- to cis-anethole accurred at 300 nm and that of trans- to cis-isosafrole occurred at 350 nm. For geraniol no isomerization to nerol [106-25-2] was obsd. with the slow reactor, while with the fast reactor 12. 106-25-2 and 4043-71-4 are just another two chemicals used in this study.6% nerol was formed after 6 h irradn. at 254 nm. With 300 nm light only a small increase in nerol percentage was found, whereas no isomerization occurred at 350 nm. .

Essential oils from spices grown in Alberta: Fennel oil (Foeniculum vulgare var. dulce). Embong, M. B.; Hadziyev, D.; Molnar, S. (Dep. Food Sci., Univ. Alberta, Edmonton, Alberta, Can.). Can. J. Plant Sci., 57(3), 829-37 (English) 1977. CODEN: CPLSAY. DOCUMENT TYPE: Journal CA Section: 62 (Essential Oils and Cosmetics) Section cross-reference(s): 11, 17 Annual sweet fennel (F. vulgare var. dulce Mill.), raised by direct field seeding, was evaluated for its horticultural performance and its oil quality over three consecutive growing seasons. Plant vigor and growth under irrigation and fertilizer treatments were rated only as medium. At harvest the majority of umbels were green, and by the first killing frost at least 50% of the plants were still in bloom. Oil yields for herb and fruit were 1.22 and 1.50%, resp. Oil quality, as reflected by its major and minor constituents, was detd. by combined thin-layer and gas chromatog. and by mass spectral and IR analyses. Nineteen constituents were identified in the herb oil and 14 in the fruit oil. This corresponded to 96 and 98% of the total oil content. Trans-anethole [4180-23-8], fenchone [1195-79-5], estragole [140-67-0] and limonene [99-85-4] represented 79.2% of the herb and 93.1% of the fruit oil. Oil compn. appeared to be const. over the 3 years. Though the oil quality would be acceptable to the food industry, the low yield obtained suggested that a variety with a shorter growth period would be required before carrying out further feasibility studies on com. prodn. of fennel on the Prairies.

Detail of "4180-23-8"

Benzene,1-methoxy-4-(1E)-1-propen-1-yl-

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Reference