Chlorinated aromatic alcohols

The next calculation attempts what has always been considered the most difficult problem that will be encountered In a mixture, namely, distinguishing singly and multiply substituted spectra. For this calculation, we have chosen the aromatic alcohols, chlorides and chlorinated alcohols. 

As diazonium tetrafluoroborates are more soluble in strongly acidic media, the precipitation of the diazonium tetrafluoroborate from an auxiliary diazonium salt and alkaline tetrafluoroborate is preferred when the diazonium tetrafluoroborate is thought to be too soluble an increase of the ionic strength tends to decrease its solubility.3-129 However, some alkaline chloride can co-precipitate with the diazonium tetrafluoroborate. Consequently, the diazonium tetrafluoroborate yields can be a little optimistic and some chlorinated aromatics can be produced together with fluorinated aromatics during the dediazoniation step.3,171 To prevent such contamination, the diazonium tetrafluoroborate is washed with the minimum amount of chilled water, then with another polar solvent, such as an alcohol, and finally with a water-insoluble solvent, such as diethyl ether. When their decomposition points are not too low, diazonium tetrafluoroborates can also be purified by rccrystallization (in water or acetic acid) or by dissolution in acetone then salting out with diethyl ether.3... 

UNIFAC Approach Jensen et al. [16] have employed the UNIFAC group contribution approach to develop an estimation method for pure-component vapor pressures. The model developed applies to hydrocarbons, alcohols, ketones, acids, and chloroalkanes of less than 500 molecular mass and in the vapor pressure region between 10 and 2000 mmHg. Burkhard et al. [8] extended this model to chlorinated aromatic compounds such as chlorobenzenes and PCBs. 

Polyvinyl acetate Aromatic hydrocarbons, ketones, chlorinated hydrocarbons, alcohols Petrol... 

Dicofol or l,l-bis(p-chlorophenyl)-2,2,2-trichloroethanol is a polychlorinated aromatic alcohol. It has an empirical formula of C14H9C150 and a molecular weight of 370.51. The technical material contains at least 70% of the p,p isomer and about 18% of the o,p isomer. A contaminant has been identified (1) in which the hydroxyl group has been replaced by a chlorine atom. Dicofol is insoluble in water but very soluble in aromatic and aliphatic solvents. It is incompatible with highly alkaline materials. On exposure to UV radiation at 2537 A, it breaks down into the corresponding phenone, and it is also degraded by thermal sterilization. 

Answer Since we are limited to starting with monosubstituted cyclic molecules we have the option of adding the carbons to the chlorinated ring or adding the Cl to the aromatic alcohol. In the lab it is easier to do the former, so we shall proceed along that line. Thus, we have to add carbons. 

More than 800 chemicals have been identified as being toxic to the skin. These include aliphatic, aromatic and chlorinated hydrocarbons, alcohols, esters, ethers, glycols, aldehydes, ketones, inorganic oxidizers, heavy metals, acids, alkalis, pesticides, plasticizers, polynuclear aromatic compounds, POPs, and surfactants J1-3 A partial list of these is contained in Table 27.1. A more complete list is available on the Scorecard web site.I3 ... 

The epoxy resins with molecular weights up to 2,000 are soluble in ketones, chlorinated hydrocarbons, alcohol ethers, esters, and aromatic hydrocarbons. They are compatible with many of the synthetic resins such as alkyds, phenolics, and amine-formaldehyde resins. 

For aromatic alcohols and compounds with an —OH on a side chain, the alcohol contribution (primary, etc.) must be included. For example, o-chlorophenol AB = AB (primary alcohol) + AB (chlorine) + AB (phenol) + AB (ortho correction—see footnote a)... 

General biological depressants are substantially non-ionized substances. They may be hydrocarbons (aliphatic or aromatic), chlorinated hydrocarbons, alcohols, ethers, ketones, sulfones, weak acids, weak bases, or aliphatic nitrocompounds. Aldehydes, esters, strong acids, and strong bases usually act differently. Many hypotheses have been put forward to explain the action of depressants, and these will be briefly reviewed here. 

Uses Intermediate in maintenance paints, colored baking enamels, decorative finishes blended with other silicone resins to improve hardness with org. resins to improve heat resist., weatherability Properties Solid-flake sol. in ketones, esters, chlorinated soivs., alcohols, aromatic hydrocarbons, solv. blends 60% solids... 

Properties Colorless to yish. clear med.-vIsc. Ilq. sol. In aliphatic and aromatic as well as chlorinated hydrocarbons, alcohols, ethers, and esters dens. 1.0 g/ml flash pt. > 100 C surf. tens. 21.6 mN/m Use Level 0.05-0.15%... 

Properties Colorless to It. amber clear to hazy liq. mild odor sol. in aliphatic, aromatic, and chlorinated hydrocarbons, alcohols insol. in water m.w. 11,000 sp.gr. 0.98 dens. 8.0 Ib/gal vise. 1500 cSt b.p. > 200 C flash pt. (PMCC) > 93 C 100% act., 32% silicone Toxicology May cause temporary eye discomfort, mild redness, dryness on direct contact no injury likely from relatively short exposure by inh. swallowing Ig. amts, may cause digestive discomfort TSCA listed Precaution Avoid strong oxidizers... 

Uses Plasticizer, tackifler, processing aid in nitrile rubber tackifler in adhesives (hot-melt, hot-melt pressure-sensitive, pressure-sensitive) diluent, modifier in epoxy coatings rubber cements antiskinning agent in varnishes food pkg. adhesives, rubber articles Regulatory FDA 21 CFR 175.105,177.2600 Properties Gardner 8 liq. sol. in alcohols, esters, ethers, ketones (except acetone), and chlorinated, aromatic, naphthenic, and terpene hydrocarbons m.w. 250 sp.gr. 1.091 soften. (R B) pt. 12 C iodine no. (Wijs) 80 hyd. no. 200 flash pt. (COC) 365 F Nevoxy EPX-L [Neville]... 

Properties Wh. gran, powd., mild ammoniacal odor 100% thru 10 mesh, 96% thru 20 mesh sol. in water, some chlorinated soivs., alcohols, aromatic hydrocarbons, ketones m.w. 7,000,000 bulk dens. 19-37 Ib/ft vise. 7500-10,000 cps (1% aq.) m.p. 62-67 C pH 8-10 (sol n.) nonionic Precaution Slippery when wet... 

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