X0202 4 2008-02-28 false 0000090185 SIGMA ALDRICH CORP SIAL 0001203147 METEER JAMES W 3050 SPRUCE STREET ST. LOUIS MO 63103 false false false true VP, Quality Common Stock 2008-02-28 4 M false 4800 18.25 A 10592 D Common Stock 2008-02-28 4 M false 11000 25.315 A 21592 D Common Stock 2008-02-28 4 M false 15000 25.86 A 36592 D Common Stock 2008-02-28 4 M false 15000 28.66 A 51592 D Common Stock 2008-02-28 4 M false 5000 28.825 A 56592 D Common Stock 2008-02-28 4 M false 50800 56.0158 D 5792 D NQ Stock Option Right To Buy 18.25 2008-02-28 4 M false 4800 18.25 D 2001-11-13 2010-11-13 Common Stock 4800 0 D NQ Stock Option Right To Buy 25.315 2008-02-28 4 M false 11000 25.315 D 2003-05-07 2012-05-07 Common Stock 11000 0 D NQ Stock Option Right To Buy 25.86 2008-02-28 4 M false 15000 25.86 D 2004-05-06 2013-05-06 Common Stock 15000 0 D NQ Stock Option Right To Buy 28.66 2008-02-28 4 M false 15000 28.66 D 2005-05-04 2014-05-04 Common Stock 15000 0 D NQ Stock Option Right To Buy 28.825 2008-02-28 4 M false 5000 28.825 D 2006-07-08 2015-07-08 Common Stock 5000 0 D Power of Attorney, Debbie Bockius 2008-02-28