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m (mouse, molality, meter)

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A lower-case m has several possible meanings on a Safety Data Sheet. The most likely uses are:

Do not confuse m with m3 = cubic meter, a unit of volume, which can appear as m3 in plain text files that do not support sub- and superscript characters.

SDS Relevance

laboratory condenser

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One can usually determine the intended meaning of "m" on Safety Data Sheet by looking at the context in which it is used. For example:

Further Reading

See also: concentration units, distance units, RTECS, volume units.

Additional definitions from Google and OneLook.

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