# [texhax] Decimal numbers in chemical equations with mhchem package

Joseph Wright joseph.wright at morningstar2.co.uk
Sun Oct 11 17:36:44 CEST 2009

Sonja Bente wrote:
> Dear texhax,
>
> I have a question according to the mhchem package. I have some chemical
> equations where the amounts are decimal numbers, for example \ce{0.151NH3}. Can
> I typeset this with mhchem automatically?
>
> If I use a dot, the dot is centered (like shown in the package documentation),
> if I use a comma the part behind is subscript; brackets like {0.151} did not
> help, too. If I use \ce{\num{0.151}NH3} it works for the number, but then NH3 is
> not correct any more. I tried both math environment and text mode.
>
> I think the package is great and I love using it, so I would be happy if there
> is any trick for decimal numbers!
>
> Kind regards

Have you tried maths-escape:

\mhchem{\$0.151\$NH3}
--
Joseph Wright