Millimoles to milligrams

A fairly technical point which came up recently in a matter deals with the conversion, for impaired cases, from millimoles per litre to milligrams per cent. To make the conversion one multiplies the result in millimoles by 4.6. (Thanks to Yossi Schochet for this).


Noonan (Alta. Q.B.), [1987] A.J. No. 624: 

An expert witness testified that 53.4 millimoles of alcohol in one litre of blood converts to 246 milligrams of alcohol in 100 millilitres of blood or 246 milligrams per cent. In order to convert millimoles per litre to milligrams per cent, one multiplies the result in millimoles by 4.6.  

MacDonald, [1987] A.J. No. 444: 

Ms. Costello testified that the Appellant's blood contained 36.3 millimoles of alcohol per 1 litre of blood. Another expert called by the Crown converted this reading as being 167 milligrams of alcohol in 100 millitres of blood. The conversion from millimoles to milligrams percent is obtained by multiplying the number of millimoles by 4.6. 
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