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#1 |
Member
Join Date: Jan 2012
Posts: 411
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Stu, back to betel. A grey residue could be the dried out remains of lime paste, (calcium hydroxide) I think. I believe it is the reaction of this with the other ingredients that turns saliva red. I don't know if it flares in contact with a flame.
Regards Richard |
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#2 | |
Member
Join Date: Aug 2007
Location: CHRISTCHURCH NEW ZEALAND
Posts: 2,789
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Stu |
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#3 |
Member
Join Date: May 2014
Location: Ireland
Posts: 543
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Chemistry is my profession
Calcium hydroxide will not flare at all when touched with a match. No ideas on item though Regards Ken |
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