Volatile organic compound emissions from surface coating facilities: characterization of facilities, estimation of emission rates, and dispersion modeling of off-site impacts was written by Athappan, Annabrabha;Sumitsawan, Sulak;Gangupomu, Roja Haritha;Kositkanawuth, Ketwalee;Parikh, Parthen;Afotey, Benjamin;Sule, Neelesh;Kalidindi, Sahithi Raj;Sattler, Melanie L.;Weatherton, Yvette Pearson. And the article was included in Journal of Environmental Protection in 2013.Computed Properties of C7H14O3 The following contents are mentioned in the article:
Surface coating facilities are major sources of volatile organic compounds (VOCs) in urban areas. These VOCs can contribute to ground-level ozone formation, and many are hazardous air pollutants (HAPs), including xylene, ethylbenzene, and toluene. This project was conducted in order to provide information for updating the Texas Commission on Environmental Quality TCEQ, USA, permit by rule for Surface Coating Facilities. Project objectives were: (1) to develop a database of information regarding surface coating facilities in Texas; (2) to estimate maximum emission rates for various VOC species from surface coating facilities in Texas; (3) to conduct dispersion modeling to estimate off-site impacts from surface coating facilities. The database was developed using 286 TCEQ permit files authorizing surface coating facilities in Texas during 2006 and 2007. The database was designed to include information important for estimating emission rates, and for using as inputs to the dispersion model. Hourly and annual emissions of volatile organic compounds VOCs, particulate matter PM, and exempt solvents ES were calculated for each permitted entity/ company in the database, according to equations given by TCEQ. Dispersion modeling was then conducted for 3 facility configurations worst-case stack height, good practice stack height, and fugitive emissions, for urban and rural dis- persion parameters, for 8-h and 24-h operating scenarios, and for 1-h, 24-h, and annual averaging times, for a total of 36 scenarios. The highest modeled concentrations were for the worst-case stack height, rural dispersion parameters, 24-h operation scenario, and 1-h averaging time. 108 specific chem. species, which are components of surface coatings, were identified as candidates for further health impacts review. This study involved multiple reactions and reactants, such as Ethyl 3-ethoxypropanoate (cas: 763-69-9Computed Properties of C7H14O3).
Ethyl 3-ethoxypropanoate (cas: 763-69-9) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Many esters have the potential for conformational isomerism, but they tend to adopt an s-cis (or Z) conformation rather than the s-trans (or E) alternative, due to a combination of hyperconjugation and dipole minimization effects. The preference for the Z conformation is influenced by the nature of the substituents and solvent, if present. Lactones with small rings are restricted to the s-trans (i.e. E) conformation due to their cyclic structure.Computed Properties of C7H14O3
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics