Re: Should the fragrance concentrate be diluted in alcohol by weight or volume?
Since Iíve just been asked a question about this I thought Iíd put in here the way to get from weight to volume:
To work out the volume of a known weight use this calculation:
Kg divided by Specific Gravity = Litres
or for a smaller amount:
g divided by Specific Gravity = ml
Notice that for a SG lower than 1 the volume will be more than the weight, when greater than 1 it will be less. Perfumery ingredients can be anywhere from 0.7 to 1.2 but itís the ethanol at roughly 0.8 that has the biggest influence on a finished fragrance.
The same process works the other way by multiplying.
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