siunitx package not executing uncertainty properly

Question

I must begin by saying that I have read the manual. But maybe I've done a crap job of it.

I have three problems:

1. I want the values in the uncertainty values brackets to express as plus/minus. Instead, they only come as brackets.

2. I want the range units to NOT repeat. I am unable to do this despite specifying it in the preamble.

3. I want to add decimals in the uncertainty, but it gives me errors.

(Additional request) Can we convert all zeros in the document to a with a backslash across it or a dot at the center?

The minimal code is:

\documentclass[a4paper]{article}
\usepackage[alsoload=synchem,%
            range-phrase=--,%
            repeatunits=false%
            ]{siunitx}  

\begin{document}
The temperature measured was \SI{14(1)}{\kelvin} and was observed between time points \SIrange{34}{90}{\second}.

\SI{1.45(2)e-4}{\Molar}
%\SI{1.45(0.2)e-4}(\Molar} throws an error: "Invalid certainty in numerical input".
\end{document}

This is my output:

.

My OS is Linux Mint. My front end is TeXMaker 5.0.3 I use pdflatex 3.14159265-2.6-1.40.20.

Answer 1

First, note that the load options you give are from version 1.x, which was replaced in 2010 by version 2. As such, I think you are likely using version 2 but loading it with older options.

The requests are separate, so I will take them one at a time.

1. You can tell siunitx to print uncertainties separately using \sisetup{separate-uncertainty} (in v1 \sisetup{seperr})

2. You can suppress repeat of range units using \sisetup{range-units = single} (v1 sisetup{repeatunits = false}). Looking at the code, it seems the v1 emulation has an bug here as it doesn't cover ranges: I'll adjust.

3. The uncertainty given in 'short' form is expressed based on the last digits of the main number. So you would need \SI{1.450(2)e4}{\Molar} to get an extra place. You could use the format \SI{1.45 \pm 0.002e4}{\Molar}, which will correctly add the places.