![](https://coimages.sciencemuseumgroup.org.uk/372/489/large_thumbnail_smg00098552.jpg)
2x50g tubes of ethyl chloride
1930-1950
1930-1950
1941-1960
1951-1970
1950-1951
1950-1974
1925
1959
1959
1959
1969
1971-1976
1940
1951
1968-1981
1974
1932-04-23
1948-08-07
1947
1947
1947
1947
1948-08-04
1948-08-02
1924
1920-1950
1961
1959
1960-1984
1950-1974
1946-1969
1947
1948-08-05
1939
1900-1980
1940-1960
1950-1951
1969-1972
1980
1937-1952
1925-1990
1930-1960
1968
1959
1936
1950-1965
1965-1966
2002