▁chrom at ography . ▁DE AE ▁can ▁also ▁be ▁convenient ly ▁obtained ▁from ▁renew able ▁sources . ▁It ▁is ▁chem ically ▁stable ▁and ▁able ▁to ▁abs orb ▁carbon ▁dio x ide ▁( CO 2 ) ▁from ▁its ▁surr ound ings . ▁In ▁solution , ▁it ▁can ▁decrease ▁the ▁surface ▁t ension ▁of ▁water ▁when ▁the ▁temperature ▁is ▁increased . ▁ ▁App lications ▁Di eth yle than ol am ine ▁is ▁used ▁as ▁a ▁cor ros ion ▁in hib itor ▁in ▁steam ▁and ▁cond ens ate ▁lines ▁by ▁neutral izing ▁carbon ic ▁acid ▁and ▁sc av eng ing ▁o xygen . ▁ ▁Pre par ation ▁Di eth yle than ol am ine ▁is ▁prepared ▁commer cially ▁by ▁the ▁reaction ▁of ▁di eth yl am ine ▁and ▁eth yl ene ▁ox ide . ▁ ▁( C 2 H 5 ) 2 N H ▁+ ▁cy clo ( CH 2 CH 2 ) O ▁ ▁→ ▁( C 2 H 5 ) 2 N CH 2 CH 2 OH ▁It ▁is ▁also ▁possible ▁to ▁prepare ▁it ▁by ▁the ▁reaction ▁of ▁di eth yl am ine ▁and ▁eth yl ene ▁ch lor oh yd rin . ▁ ▁Saf ety ▁Di eth yle than ol am ine ▁is ▁an ▁ir rit ant ▁to ▁the ▁eyes , ▁skin , ▁and ▁resp ir atory ▁system . ▁The ▁Occ up ational ▁Saf ety ▁and ▁Health ▁Administration ▁and ▁the ▁National ▁Institute ▁for ▁Occ up ational ▁Saf ety ▁and ▁Health ▁have ▁set ▁occup ational ▁expos ure ▁limits ▁for ▁workers ▁handling ▁the ▁chemical ▁at