1888 – 1889

Karl von Marx (1832 – 1890)

1890

Georg    Lunge (1839 – 1923)

1891

Julius Schenkel (1840 – 1917)

1892 – 1893

Hermann Krey (1851 – 1929)

1894 – 1897

Richard Curtius (1857 – 1912)

1898 – 1900

Heinrich Caro (1834 – 1910)

1901 – 1906

Emanuel Augustus Merck (1855 – 1923)

1907 – 1912

Carl Duisberg (1861 – 1935)

1913 – 1915

Hermann Krey (1851 – 1929)

1916 – 1920

Theodor Diehl (1855 – 1921)

1920 – 1925

Friedrich Quincke (1865 – 1934)

1926 – 1929

Alfred Stock (1876 – 1946)

1929 – 1937

Paul Duden (1869 – 1954)

1937 – 1942

Karl Merck (1886 – 1968)

1942 – 1943

Walther Schieber (1896 – 1960)

1943 – 1945

Heiner Ramstetter (1896 – 1986)