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Old 08-10-2005, 05:01 PM
JohnA JohnA is offline
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Quote:
Originally Posted by GotH2O
A 10wt% methanol in water reduces the surface tension of water 25%! The effect tapers off as the methanol content increases
Where did you get that figure from? :?:
Empirically it feels right, but I'd be interested to see further 'hard' data

The surface tension is not an esoteric entity.
It's obvious even as you pour the mixtures into containers. Very low surface tension results in droplets popping out very easily, so you have to be careful to avoid rinsing your eyes with methanol.
Water behaves, well, like water, so adding 10% methanol immediately has it behaving half-way like methanol (which has low surface tension and is hard to pour without having splashes all around)
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John

www.max-boost.co.uk
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