# What is the role of the slash (“/”) in chemical reactions?

I have always been confused about the role of slash in chemical reactions.

In some reactions, e.g. $\ce{NaBH4}/\ce{OH-}$ it means we use both compounds, right?

And in reactions where we write $\ce{Pt/Pd/Ni}$ do we mean platinum or palladium or nickel?

• Usually in a reaction slash means both. H2, Pd/C is the prime example. If it's in a sentence, i.e. plain text, I'd say it probably means or, although context is important as well. – orthocresol Nov 30 '15 at 14:52
• I always thought the everyday meaning is implied and it seems to have been a correct assumption every time. – M.A.R. Nov 30 '15 at 21:00
• I'm not aware of the standard, but the textbook usually specifies it above the reaction when it is first mentioned. It would be useful to have convention. – tkhanna42 Dec 1 '15 at 12:27