phthalic acid


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a colorless acid used to make dyes and perfumes

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Sha, Distribution of Phthalic Acid Esters in Wuhan Section of the Yangtze River, China, J.
Aguilar-Caballos, "Social and economic interest in the control of phthalic acid esters," TrAC Trends in Analytical Chemistry, vol.
The phthalic acid (1.0 mmol), aryl amine (1.0 mmol), and L-proline (0.5 mmol) were sequentially added in ethanol (5.0 mL) into a rb (round bottom) flask to form a solution.
Phthalates are salts or esters of phthalic acid, frequently used chemicals of the most cosmetics as a clinging agent to skin, hair, and nails, and enhance their staying capacity.
In addition, the decarboxylation reaction of 2,6-NDA can form naphthalene [39,40], which can be oxidized to form phthalic anhydride [41,42] and produced the observed phthalic acid by hydrolysis [39,43].
Subsequently, MMP can be further degraded into phthalic acid (PA) and finally C[O.sub.2] and [H.sub.2]O [12].
aliena wood in single extraction as: 1,5-hexadien-3-yne (97.95%), phthalic acid, butyl hexyl ester (0.61%), 2-p- nitrophenyl-oxadiazol-1,3,4-one-5 (1.43%).
Asthma due to inhaled chemical agents--epoxy resin systems containing phthalic acid anhydride, trimellitic acid anhydride and triethylene tetramine.
Phthalates, which are esters of phthalic acid (PAE)[30], are the most abundant and widely distributed manmade environmental pollutants owing to their use over the last 50-60 years [23,31] and humans are exposed to them from a variety of sources throughout their lives [32].Within the bottling industry, bottles are produced from specific polymers depending on the volume of the container, with each bottle possessing unique characteristics such as type of dispenser and disposal, bottle strength and storage time [33].
2-hydroxy-1-ethyl acetate (22.15%), mono (2-ethylhexyl) ester (2.33%), hexanedioic acid (2.11%), phthalic acid (1.78%), cyclopentane (1.77%), benzamide (1.76%), propanoic acid (1.16%), hydrazine carboxamide (0.93%), pentadecanoic acid (0.91%), hexadecyl acetate (0.81%) and oxalic acid (0.80%) (Fig.
Phthalates, esters of 1,2-dicarboxylic acid phthalic acid, are synthetic industrial chemical compounds which were introduced in 1920.
In this account, 9,17-octadecadienal (Z)-, an unsaturated aldehyde (peak area: 21.77%) (Figure 4(e)), n-hexadecanoic acid, a palmitic acid (peak area: 21.75%) (Figure 4(f)), phthalic acid, di(2-propylpentyl) ester, a dicarboxylic acid ester (peak area: 9.48%), and 9,12-octadecadienoic acid (Z,Z)-, a linolenic acid (peak area: 9.35%) were the major phytochemicals on the basis of quantity.
Environmental Protection Agency (EPA) and other regulatory agencies to identify diesters of orthophthalic acid, also called simply phthalic acid, an aromatic dicarboxylic acid in which the two carboxylic acid groups are located on adjacent carbons (positions 1 and 2) in the benzene ring.
The compounds Co[Cl.sub.2] x 6[H.sub.2]O, Ni[Cl.sub.2] x 6[H.sub.2]O, Cu[Cl.sub.2] x 2[H.sub.2]O, ethylene diamine, benzyl methyl amine, phthalic acid and sodium bicarbonate were commercial products and used without further purification.