Wallach, Otto, 1847-1931, German chemist, Ph.D. Univ. of Göttingen, 1869. Wallach was a professor at the Univ. of Bonn from 1870 to 1889 and at the Univ. of Göttingen from 1889 to 1915. In 1910 he received the Nobel Prize in Chemistry for his work in the field of alicyclic compounds. Wallach investigated and characterized a large number of essential oils called terpenes, successfully distinguishing among very similar compounds from a variety of plants. His work made a significant contribution to the chemical industry, providing the foundation for new methods of analysis and manufacturing.

Wallach is a word of Germanic origin, referring especially to Latin people, particularly Romanians and Italians. See the history of the term Vlach.

Family name

• Eli Wallach (born 1915), American actor
• Evan Wallach, American judge, expert on war crimes
• Ira Wallach (writer) (1913–1995), American screenwriter and novelist
• Ira D. Wallach (1909–2007), American businessman and philanthropist
• Joel D. Wallach (born 1940), American veterinarian and naturopath
• John Wallach (1943–2002), American journalist, author and editor
• Lori Wallach, director and founder of Global Trade Watch
• Otto Wallach (1847–1931), German chemist, Nobel Prize winner
• Richard Wallach (1816–1881), American politician
• Tim Wallach (born 1957), former American baseball player
• Tommy Wallach (born 1982), American writer and musician
• William Douglas Wallach (1812–1871), American surveyor and newspaper entrepreneur
• Yochanan Vollach (German: Jochanan Wallach, born 1945), former Israeli footballer
• Yona Wallach (1944–1985), Israeli poet
• Maxim Litvinov (born: Max Wallach, 1876–1951), Russian revolutionary and Soviet diplomat

Others

• 6670 Wallach, Main-belt Asteroid discovered in 1994
• Wallach (crater), small lunar impact crater
• Wallach Hall, the second oldest dormitory on the campus of Columbia University
• Wallach IX, fictional planet in Frank Herbert's science fiction universe of Dune
• Wallach rearrangement, an organic reaction converting an azoxy compound to an azo compound
• Wallach reform, 16th century land reform in Lithuanian lands

See also

• Wallachia, a region in today's Romania
• Wallich, an unrelated, but phonetically similar name