From Wikipedia
<span style="font-family: sans-serif; font-size: 13px; font-weight: normal; line-height: 19px;">A historical use of methyl formate, which sometimes brings it attention, was in refrigeration. Before the introduction of less-toxic refrigerants, methyl formate was used as an alternative to sulfur dioxide in domestic refrigerators, such as some models of the famous GE Monitor Top. Owners of methyl formate refrigerators should keep in mind that, even though they operate below atmospheric pressure, if evidence of a leak develops, they should take measures to avoid exposure to the ether-smelling liquid and vapor.</span>
<span style="font-family: sans-serif; font-size: 13px; font-weight: normal; line-height: 19px;">Rated "highly flammable." Eek!</span>