I'm figuring it probably is a reaction with oxygen, since the stuff is usually at least RUNNY in the bottle. But then, its shelf life is only 48 months and the stuff is certainly older than that, so... I don't know, it could just be the cellulose in the suspending base doing funny stuff because it's old. *ponders*
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Date: 6 Jan 2009 10:37 pm (UTC)