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legal form Corporation
founding 1934 Sigma, 1951 Aldrich, 1976 merger
Seat St. Louis , Missouri , United StatesUnited StatesUnited States 
management Udit Batra (CEO Merck Life Science)
Number of employees 9,000
sales 2,704,000,000 USD
Branch Chemical trade
As of December 31, 2013

The company Sigma-Aldrich is a leading global manufacturer and distributor of chemical, biochemical and pharmaceutical research materials and a subsidiary of Germany's Merck KGaA .


The Aldrich company was founded in 1951 by the Austrian chemist Alfred Bader in the USA. The start-up capital came from his work as a research chemist at PPG . He supplied universities and research institutions with (highly specialized) chemicals and glass equipment. The company's headquarters are in St. Louis , United States . In Germany, the European market was supplied from its headquarters in Steinheim . The free trade journal Aldrichimica Acta has been published since 1968 to draw attention to new Aldrich products and their special importance in chemical research.

Alfred Bader founded the inorganic specialty company Alfa Inorganics with Metal Hydrides Inc. in 1962 - as a 50:50 joint venture . In 1975 Aldrich merged with the American company Sigma, a well-known manufacturer of biochemical materials with a German headquarters in Taufkirchen . Sigma-Aldrich retained the individual company names for strategic reasons. In 1989 Sigma-Aldrich took over the Swiss fine chemicals manufacturer Fluka in Buchs (St. Gallen). Fluka was founded in 1950 by the Swiss pharmaceutical companies Ciba, Geigy and Hoffmann-La Roche. (In 1988 the Hoechst subsidiary Riedel-de Haen AG tried in vain to take over Fluka).

In 1991, Alfred Bader retired from the company's management. At the same time, a small area he was personally responsible for was renamed "Alfred Bader Chemicals - Library of Rare Chemicals" to "Sigma-Aldrich - Library of Rare Chemicals."

Supelco, a manufacturer of analytical and chromatographic materials, was taken over in 1991. From this point on, E. Merck Darmstadt's European market leadership (in laboratory chemicals) was broken. Sigma-Aldrich took over the laboratory chemicals division "Riedel-de Haen" in 1996 from AlliedSignal Inc. (Riedel-de Haen AG had been hived off as a whole by the Hoechst Group in 1995). In 1998, Sigma-Aldrich added the company Carbolabs ( phosgenation ) to the preparative area . With 6000 employees, Sigma-Aldrich achieved worldwide sales of US $ 1 billion for the first time in 2000. The company Isotec , a leading manufacturer isotopes was purchased 2,001th In 2007, Sigma-Aldrich exceeded the US $ 2 billion mark in sales. BioReliance was taken over in 2012. With 8,000 employees, 2013 sales exceeded US $ 2.7 billion in 40 countries.

On September 22, 2014, Merck KGaA announced that it would take over Sigma-Aldrich for US $ 17 billion (EUR 13.1 billion). The acquisition of all shares at a price of US $ 140 per share required the approval of Sigma-Aldrich shareholders and the relevant regulatory authorities. After approval from shareholders and regulatory authorities, Merck completed the acquisition on November 18, 2015. On October 20, 2015, Sigma-Aldrich's European solvent and inorganics business was sold to Honeywell .

Business areas

Today Sigma-Aldrich serves all areas of chemical research and has therefore divided its business areas into

  • analytical chemicals and chromatography materials
  • Biochemical materials
  • Laboratory chemicals
  • Laboratory supplies, scientific literature and other equipment
  • Bulk chemicals and contract small productions

The Sigma catalog from 1998 contained the typical content of earlier Sigma catalogs, on the back the reference to the "Sigma-Aldrich Group" appeared:

In Germany, the company has sales offices in Hamburg-Hausbruch , Schnelldorf , Steinheim am Albuch and Taufkirchen (near Munich) ; in Switzerland in Buchs and St. Gallen and in Vienna in Austria.


Since 1965 Sigma-Aldrich Corp. a public company whose shares were traded worldwide from 1990 to 2015 and were listed in the NASDAQ-100 index. On November 18, 2015, the company was incorporated into Merck KGaA and on July 31, 2015, it was delisted from NASDAQ-100.

Web links

Individual evidence

  1. Merck: Udit Batra to manage combined life science business if Sigma-Aldrich acquisition is successfully completed ( Memento from January 6, 2016 in the Internet Archive )
  2. a b Annual Report 2013
  3. today Alfa-Aesar
  4. (not to be confused with the Japanese manufacturer Sigma of lenses, digital cameras and flash units).
  5. History Aldrich, Sigma
  6. History of FLUKA ( Memento from September 7, 2015 in the Internet Archive )
  7. ^ Alfred Bader Chemistry, Faith and Art - Foundations of my Life (edited by Gerhard Botz)
  8. The US group General Electric acted as "AlliedSignal" as the buyer, which retained the high-volume industrial chemicals sector and transferred the small laboratory chemicals sector to Sigma-Aldrich.
  9. Press release from September 22, 2014 . -
  10. Merck: Darmstadt residents are allowed to buy Sigma-Aldrich for 13.1 billion euros. In: Handelsblatt . November 10, 2015, accessed January 10, 2016 .
  11. Merck Completes Sigma-Aldrich Acquisition , November 18, 2015
  12. Merck Group. Archived from the original on January 6, 2016 ; accessed on September 7, 2016 .
  13. WKN: 863120 / ISIN: US8265521018 / SIAL