Xylene precautions

Uses Stir-in additive, adhesion promoter tor coatings and inks to PP and other substrates primer for PP, selected plastics, and metals Properties Translucent vise, liq. xylene odor sol. in xylene, toluene insol. in alcohols, esters, ketones sp.gr. 0.955 (soln.), 1.04-1.09 (molded) vise. 80 cps b.p. 145 C flash pt. (TCC) 28 C hardness (Tukon) 2-4 knoops (molded) 40% solids in xylene Precaution Ramm. liq. 

A. Ethyl 2,5-dimethylphenylkydroxymalonate. One hundred and seventy-four grams (1 mole) of ethyl oxomalonate (Note 1) and 265 g. (2.5 moles) of J>-xylene are mixed in a 1-1. threenecked flask equipped with a good stirrer, a dropping funnel, and a calcium chloride drying tube. Suitable precautions are taken to exclude moisture from the reaction mixture. While the mixture is cooled in an ice-water bath and stirred vigorously, 325 g. 

CAUTION Hydrazine is a suspected carcinogen and therefore should be handled with appropriate precautions. Hydrazine hydrate containing 60 per cent w/w and 98-100 per cent w/w NH2 NH2H20 is available commercially (1). A hydrazine solution, 60 per cent w/w of hydrazine hydrate, may be concentrated as follows. A mixture of 150 g (144 ml) of the solution and 230 ml of xylene is distilled from a 500-ml round-bottomed flask through a well-lagged Hempel (or other efficient fractionating) column in an atmosphere of nitrogen. All the xylene passes over with about 85 ml of water. Upon distillation of the residue, about 50 g of 90-95 per cent hydrazine hydrate (2) are obtained. 

Flammable chemicals should be stored in appropriate containers and facilities. Smaller amounts may be stored in laboratories in appropriate cabinets. A 10% neutral buffered formalin solution, commonly known as formaldehyde, is potentially carcinogenic. In 1987, precautions for laboratory workers were put in place as the Formaldehyde Standard CFR 1919.1048. Xylene is potentially hazardous and should be handled appropriately, see OSHA, 29 CFR 1910.1450. An excellent website is available for on fine location of Material... 

Use Level 0.1-2.0% on total resin solids Toxicology Causes eye, skin, and respiratory tract irritation Precaution Flamm. liq. and vapor Hazardous Ingredients Xylene (40%)... 

Properties Pale yel. powd. sol. (g/100 ml, 20 C) 110 g in trichloroethylene, 101 g in acetone, 78 g in styrene, 76 g in ethyl acetate, 72 g in toluene, 51 g in xylene bulk dens. 560 g/l m.p. 63 1 C > 99.5% act. Precaution Subject to dust explosion prevent electrostatic charging Storage 1 yr shelf life if stored in cool, dry place in tightly sealed original container, protected from light UV-Chek AM-300 [Eerro/Polymer Addit.]... 

CAS 26447-10-9 EINECS/ELINCS 247-710-9 Synonyms Benzenesulfonic acid, dimethyl-, ammonium salt Definition Ammonium salt of ring sulfonated mixed xylene isomers Empirical C HioOsS H,N Properties Sol. in water m.w. 203.26 anionic Toxicology Chronic toxicity or skin effects are not known narcotic in high doses TSCA listed Precaution Flamm. 

Properties Cryst. solid sol. in phenol, cresols, xylene, formic acid insol. in alcohol, esters, ketones, hydrocarbons dens. 1.090 m.p. 264 C tens. str. 80 MPa tens. mod. 3000 MPa elong. ( break) 80-100% exc. abrasion resist. reasonable elec, insulation props, when dry Toxicology TSCA listed Precaution Reacts violently with Fj... 

Properties Coloriess liq. or pale yel. cryst. sol. in most org. soivs. misc. with acetone, benzene, chlorofomt, dioxane, ethyl acetate, ethanol, xylene insol. in water m.w. 243.24 dens. 1.1133 (30 C) vapor pressure 1 mm (100 C) m.p. 27 C b.p. 120 C (5 mm) flash pt. > 176 F Toxicology LD50 (oral, rat) 590 mg/kg, (IV, mouse) 180 mg/kg poison by IV route toxic by ing. and inh. harmful solid TSCA listed Precaution Flamm. exposed to heat, flame, or oxidizers avoid contact with acid... 

Precaution Combustion with evolution of chlorine will react with water or steam to produce toxic and corrosive fumes mixts. with xylene may explode... 

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