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CHEMICAL AND PHYSICAL PROPERTIES by NIOSH under 42 CFR Part 84 or other direct- • IhYsical data ming devices calibrated to treasure ethyl benzene I Molecular weight 106 may be used An analytical method for ethyl benzene is 2 Boiling point(760 mm Hg) 136 C(277 F) in the NIOSH Manual of Analytical Method& 2nd Ed, 3 Specific gravity(water = 1) 0 865 Vol 2, 1977, available from the Government Printing 4 Vapor density (aur = 1 at boiling point of ethyl Office, Washington, D.0 20402 (GPO No 017-033-00260-6) benzene) 3 66 ' S Melting point —95 C(-139 F) 6 Vapor pressure at 20 C(68 F) 7.1 mm Hg 7 Solubility in water, g/100 g water at 20 C (68 F) RESPIRATORS ' 0 015 8 Evaporation rate (butyl acetate = 1) Less than I • GOod industry hygiene practices recommend that • Reactivity engineering controls be used to reduce environmental I Conditions contributing to instability Heat concentrations to the permissible exposure level How. ' 2. Incompatibilities Contact with strong oxidizing eves' then are some exceptiogs where respirators may agents may cause fins and explosions. be used to contarol exposure. Respirators may be used 3 Hazardous decomposition products. Toxte gases when enpneenng and work practice controls are not ' and vapors(such as carbon monoxide) may be released technically feasible, when such controls are in the in a fire involving ethyl benzene. Pis of being installed,or when they fail and need to 4 Special precautions.None be supplemented. Respirators may also be used for ' Flammability operations which require entry into tanks or closed 1 Flash point 15 C(59 F)(closed cup) vessels. and in emergency situations. If the use of 2. Autoignition temperature.432 C(8 10 F) respirators is necessary, the only aspirators permitted 3 Flammable limits in air, %by volume Lower. 1.0; are those that have been approved by the Mme Safety ' Upper 6 7 and Health Admin>struion (formerly Muimg Enforx- 4 Extinguishant. Dry chemical, foa M or carbon aunt and Safety ) or by the National dioxide Institute for Occu • Warnamg properties P Safety and Health. I. Odor Threshold According to the • In addition to respirator selection,a complete respua- g Department of tory Protection program should be instituted which j.. Transportation's CHRIS Hazardous Chemiml Data., includes regular training, mamtem=M ethyl benzene has an odor threshold of 140 PPUL cleaning,and evaluation. InspeCTIOM % - 2 Eye Irritation Level According to the AIHA Hygienic Guide, "the vapor caused a noticeable eye PERSONAL PROTECTIVE EQUIPMENT irritation in humians at conxntrapons of 200 ppm- 3 pm"3 Evaluation of Warning Properties. Through Its • Employees should be odor and Irritant effects, ethyl benzene car be detected use tan provided with and required to at a concentration less than twice the impervious clothing,gloves,fax shields(eight-inch permissible expo- minimum), and other appropriate protective clothing ' sure limit.Therefore, for the purposes of this guideline, necessary torevent ethyl benzene is treated as a material with adequate p repeated or prolonged atria contact warning properges, eq with hgiiid ethyl benzene. • Clothing wet with liquid ethyl benzene should be ' MONITORING AND MEASUREMENT p � in closed containers for garage until it can be PROCEDURES discarded or until Provision Is made for the removal of ethyl benzene from the ciothtng. If the clothing is to be • Genial laundered or otherwise cleaned to remove the: ethyl Measurements to determine employee exposure are best baasene,the person performing the operation should be taken so that the average eight-hour exposure is based informed of ethyl benzene's hazardous properties. ' on a single eight-hour sample or on two four-hour • Nan-impervious clothing which becomes contami- samples. Several short-time interval samples (up to 30 nsted with liquid ethyl benzene should be removed minutes) stay also be used to determine the average Promptly and not reworm until the ethyl benzene is ' exposure level. Air samples should be taken In the removed from the clothing. employee's breathing ng zone(air that would most nearly • Any clothing which becomes wet with liquid ethyl represent that Inhaled by the employee}. benzene should be removed immediately and nes • Metlieid reworn until the ethyl benzene is removed from the Sampling and analyses may be performed by collection clothing. . of ethyl benzene vapors using an adsorption tube with • Employees should be provided with and subsequent desorption with carbon disulfide and _ required to � chromatographic analysis.Also.detector tubes certeffed zone lacy contactp s es where liquid ethyl ben- 2 Ethyl Some" `� 3>iape.eiatwr ts7s