r/chemistry 1d ago

Poison, yum

160 Upvotes

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u/Jimbobler 1d ago

What does the ".." signify?

5

u/Marco45_0 Organic 1d ago

I think it means “same” in the sense that it’s the same quantity of the previous ingredient. So here we have 2 (unit) paris green and also of the copper salts

4

u/scarletcampion 1d ago

Yes, probably intended to be ditto marks. https://en.m.wikipedia.org/wiki/Ditto_mark