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vapor density    1.94 (vs air)  
vapor pressure    103 mmHg ( 20 ¡ãC)  
assay    98%  
autoignition temp.    478 ¡ãF  
expl. lim.    95 %  
refractive index    n20/D 1.4075(lit.)  
bp    60-62 ¡ãC(lit.)
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