Chaim Azriel Weizmann (Hebrew: חיים עזריאל ויצמן, Arabic: حاييم وايزمان Ḥayīm Wayzman; 27 November 1874 – 9 November 1952) was a Zionist leader and Israeli statesman who served as President of the Zionist Organization and later as the First President of Israel. He was elected on 1 February 1949, and served until his death in 1952. Weizmann convinced the United States government to recognize the newly formed state of Israel. Weizmann was also a biochemist who developed the acetone–butanol–ethanol fermentation process, which produces acetone through bacterial fermentation. He founded the Weizmann Institute of Science in Rehovot, Israel.