28598-81-4

Basic information

• Product Name: ETHYL 9-BROMONONANOATE
• Synonyms: ETHYL 9-BROMONONANOATE;9-BROMONONANOIC ACID ETHYL ESTER
• CAS NO: 28598-81-4
• Molecular Formula: C₁₁H₂₁BrO₂
• Molecular Weight: 265.19
• Mol File: 28598-81-4.mol
• Article Data: 4

Chemical Properties

• Boiling Point: 180 °C / 30mmHg
• Flash Point: 149.5°C
• Appearance: /
• Density: 1.17
• Vapor Pressure: 0.00287mmHg at 25°C
• Refractive Index: 1.4590-1.4630
• Storage Temp.: Sealed in dry,Room Temperature
• CAS DataBase Reference: ETHYL 9-BROMONONANOATE(CAS DataBase Reference)
• NIST Chemistry Reference: ETHYL 9-BROMONONANOATE(28598-81-4)
• EPA Substance Registry System: ETHYL 9-BROMONONANOATE(28598-81-4)

Safety Data

• Hazardous Substances Data: 28598-81-4(Hazardous Substances Data)

Usage

General Description

ETHYL 9-BROMONONANOATE is a chemical compound with the molecular formula C10H19BrO2. It is an ester derived from nonanoic acid and ethyl alcohol, with a bromine atom attached to the ninth carbon in the nonanoate chain. ETHYL 9-BROMONONANOATE is commonly used as a flavoring agent in food and beverages due to its fruity and sweet aroma. It is also used in the production of perfumes and fragrances. In addition, it can be used as a building block for the synthesis of various organic compounds in the chemical industry. ETHYL 9-BROMONONANOATE is a clear, colorless liquid with a characteristic odor and is considered to be relatively stable under normal conditions.

InChI:InChI=1/C11H21BrO2/c1-2-14-11(13)9-7-5-3-4-6-8-10-12/h2-10H2,1H3

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Relevant articles and documents

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Unusual Adsorption at the Air-Water Interface of a Zwitterionic Carboxybetaine with a Large Charge Separation

The structures of layers of three different dodecylcarboxybetaine surfactants adsorbed at the air-water interface have been determined by neutron reflection. The zwitterionic compounds differed in the length of the spacer separating the quaternary ammonium and carboxylate groups, which was (CH2)1, (CH2)4, or (CH2)8. The limiting area per molecule was found to be 45, 52, or 84 ?2, respectively, and compared reasonably with results from surface tension showing that the Gibbs prefactor is 1 in each case. Isotopic labeling was used to distinguish between the position of the alkyl and spacer groups in the layer. The spacer was found to be well-immersed in water for the (CH2)1 and (CH2)4 spacers but significantly above water for the (CH2)8 spacer. The distribution of the (CH2)8 spacer along the surface normal was found to be similar to that of the dodecyl group; i.e., it projects out of the water, contrary to an earlier hypothesis that it forms a loop. Comparison of the overlap of water with dodecyl and spacer groups also indicates that the (CH2)8 spacer is well out of the water. This in turn suggests that the anionic carboxylic acid group, which is dissociated in solution, is not ionized in the adsorbed layer. A further observation is that the dodecylcarboxybetaine with the (CH2)8 spacer reaches surface saturation at one-tenth of the critical micelle concentration. This is highly unusual and is attributed to the long spacer destabilizing the micelle relative to the surface layer.