2173!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 2173!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 2 05 (DIVINYL BENZENE) 鈥? / (DIVINYL BENZENE) 1,2- (DVB DIETHYL BENZENE VINYLSTYRENE) CAS No. 1321-74-0 50 60 鈥? 1. 2. 1. 2. 15 3. 1. 2. 1. 2. 1 2 C 1. 2. 3. ( ) 1. 2. 3. 4. 2173!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 2173!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 3 05 1. 2. 3. 1. 2. 3. 1. 1. 2. 3. 4. 5. 900 1100ppm (tert butyl catechol) 6. BEIs TWA STEL CEILING 10 ppm 10 ppm Viton 1. 2. 3. 4. 鈥? pH 鈥? / 200 69 470 1.1 ~6.2 0.7 mmHg 4.5 2173!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 2173!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 4 05 0.93( =1) 1.. 0 1. 2. LD50( ) 4640 mg/kg( ) LC50( ) - 鈥? 鈥? / 1. 2. 3. 1. 2. 鈥撯?? 1. 84 2. 3. 2173!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 2173!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 5 05 1.OHM/TADS TOMES PLUS Vol.41 1999 2.RTECS TOMES PLUS Vol.41 1999 3.HSDB TOMES PLUS Vol.41 1999 4.NIOSH/OSHA,Occupational Health Guidelines for Chemical Hazards,1981 5.Material Safety Data Sheets,Genium Publishing Corporation,1997 鈥? / 鈥? 鈥? 鈥? 89.3.31 鈥? 鈥? 鈥?/鈥?