Trichloroethylene INDEX

Trichloroethylene occurs as a clear, colorless liquid free from sediment and suspended matter. It is immiscible with water, but is miscible with alcohol, with ether, and with acetone. Its refractive index at 20° is about 1.477. It may contain a suitable stabilizer. 

The determinant for a biological exposure index can be the chemical itself, one or more metabolites, or a characteristic biochemical change induced by the chemical. The specimen used for biological monitoring usually is urine, blood, or exhaled air. For example, the BEI for trichloroethylene includes four determinants ... 

Properties Yellowish-brown, opaque to translucent solid. D 0.983, mp 67-68C, saponification value 65, iodine number 37, refr index 1.4555. Soluble in chloroform, turpentine, carbon tetrachloride, trichloroethylene, toluene, hot petroleum ether, and alkalies insoluble in water. Combustible. 

Table 10.7 compares the degreasing efficacy and various EHS properties of three dimethylamides of natural fatty acids with different chain lengths, trichloroethylene, and the average value for traditional solvents. Because of the low vapour pressure, the VOC emission potential is very low and the occupational exposure and flash point reach safer values. As they are based on natural vegetable oils, the alternative solvents exhibit a high renewable mass index. 

Uses Intermediate producing paints, coatings, printing inks, textiles, metals, plastic films and parts with low surf, energy, chem. and moisture resist., oil/grease resist., low ref. index, and surf, lubricity Properties Pale to tan solid sol. in acetone, isobutyl alcohol, MEK si. sol. in trichloroethylene m.w. 464 sp.gr. 1.6 (90 C) vise. 7 cps (80 C) thickening pt. 65-70 C b.p. 102-175 C (50 mm) 70.8% F Precaution Self-extinguishing Zonyl BA-L [DuPont]... 

Flash pt 125°C (275°F). Miscible with water, methanol, alcohol, acetone, and ethyl acetate. Soluble in ether (25°C) 11% w/w. Limited solubility in benzene, trichloroethylene, methylene chloride, petrol ether, and heptane. LD50 orally in rats 5.89g/kg (Smyth). Melting point mp — 18°C Boiling point bp76o 239°C bp3.o 120°C. Flash point Flash pt 125°C (275°F). Index of refraction 1.4499. 

Uses Antistat, dye carrier, humectant, lubricant, release agent, plasticizer for adhesives, capsules, ceramic glazes, creams and lotions, deodorant sticks, inks, lipsticks food-pkg. adhesives and food-contact articles surfactant intermediate Regulatory FDA21CFR 175.105,178.3750,178.3910 EPA regulated Properties Liq. sol. in water, methanol, ethanol, acetone, trichloroethylene, Cello-solve , Carbitol , dibutyl phthalate, toluene m.w. 380420 sp.gr. 1.1254 dens. 9.39 Ib/gal vise. 7.3 cSt (210 F) fp. 4-8 C flash pt. (CCC) > 350 F ref index 1.465 pH 4.5-7.5 (5% aq.) surf. tens. 44.5 dynes/cm Carbowax PEG 540 Blend [Dow]... 

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