Text not vertically aligned in tabularx cell

Question

I've run into a problem that I can't seem to find a solution to. I am using the package tabularx since I work with small pages. My table has a mix of figures and text, and I would like the column to be vertically aligned.

Here if you check the 3rd line or the 8th line all the columns are not vertically aligned. Do you have some option to vertically align them please?

\documentclass[10pt]{article}
\usepackage[paperheight=9.45in,paperwidth=6.69in,margin=0.5in,heightrounded]{geometry}
\synctex=1
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[french]{babel}
\usepackage{xcolor}
\usepackage{tabularx,booktabs}
\usepackage{ghsystem}
\renewcommand\tabularxcolumn[1]{m{#1}}% for vertical centering text in X column
\begin{document}
\begin{center}
\begin{tabularx}{0.95\textwidth}{|X|c|c|c|c|}
\hline
    Nom & CAS & Masse Molaire & Utilisation & Dangers \\
\hline
    Anisole & 100-66-3 & 108.1 & {\color{orange} Synthèse} & \ghspic[scale=0.4]{exclam} \ghspic[scale=0.4]{flame}\\
\hline
    Chlorure d’aluminium anhydre & 7446-70-0 & 133.3 & {\color{orange} Synthèse} & \ghspic[scale=0.4]{acid} \\
\hline
    Chlorure de Fer anhydre & 7705-08-0 & 162.2 & {\color{orange} Synthèse} & \ghspic[scale=0.4]{acid} \ghspic[scale=0.4]{exclam}\\
\hline
    Chlorure d'isobutanoyle & 79-30-1 & 106.5 & {\color{orange} Synthèse} & \ghspic[scale=0.4]{acid} \ghspic[scale=0.4]{flame} \\
\hline
    Dichlorométhane sec & 75-30-2 & 84.9 & {\color{orange} Synthèse}, {\color{purple} Lavage} & \ghspic[scale=0.4]{exclam} \ghspic[scale=0.4]{health} \\
\hline
    Soude & 1310-73-2 & 40 & {\color{purple} Lavage} & \ghspic[scale=0.4]{acid} \\
\hline
    Solution de carbonate de potassium saturée & 584-08-7 & 138.2 & {\color{purple} Lavage} & \ghspic[scale=0.4]{exclam} \\
\hline
    Sulfate de sodium anhydre & 7757-82-6 & 142 & {\color{purple} Lavage} & // \\
\hline
    Acide chlorhydrique concentrée & 7647-01-0 & 36.5 & {\color{purple} Lavage} & \ghspic[scale=0.4]{acid} \ghspic[scale=0.4]{exclam} \\
\hline
    Solution saturée en chlorure d'ammonium & 12125-02-9 & 53.5 & {\color{purple} Lavage} & \ghspic[scale=0.4]{exclam}\\
\hline 
    Cyclohexane & 110-82-7 & 84.2 & {\color{brown} CCM} & \ghspic[scale=0.4]{exclam} \ghspic[scale=0.4]{flame} \ghspic[scale=0.4]{health} \ghspic[scale=0.4]{aqpol} \\
\hline
    Éther diéthylique & 60-29-7 & 74.12 & {\color{brown} CCM} & \ghspic[scale=0.4]{exclam} \ghspic[scale=0.4]{flame} \\
\hline
\end{tabularx}
\end{center}
\end{document}

Here is the result:

Answer 1

I'm afraid that ghsystem should be updated, because with TeX Live 2022 (but also 2021) it tries to do

\chemmacros_load_module:n {nomenclature}

but chemmacros in its most recent versions uses \chemmacros_module_load:n and there is no longer a nomenclature module.

Quite curious, as the packages are from the same author. And there's an issue report at the GitHub site

https://github.com/cgnieder/ghsystem/issues/13

Anyway, you want to lower the graphic symbols in the last column, so they are vertically centered.

\documentclass[10pt]{article}
\usepackage[paperheight=9.45in,paperwidth=6.69in,margin=0.5in,heightrounded]{geometry}
\usepackage[T1]{fontenc}
\usepackage[french]{babel}
\usepackage{xcolor}
\usepackage{tabularx,booktabs}

% fix the error in ghsystem if using TL 2021 or later
\ExplSyntaxOn
\cs_new_protected:Nn \chemmacros_load_module:n { }
\ExplSyntaxOff

\usepackage{ghsystem}
\usepackage{ragged2e}

\newcommand{\cghspic}[2][]{%
  \begingroup\renewcommand{\arraystretch}{0}%
  \begin{tabular}{@{}c@{}}\ghspic[#1]{#2}\end{tabular}%
  \endgroup
}

\begin{document}

\begin{center}
\renewcommand\tabularxcolumn[1]{>{\RaggedRight}m{#1}}% for vertical centering text in X column
\begin{tabularx}{0.95\textwidth}{|X|c|c|c|c|}
\hline
    Nom & CAS & Masse Molaire & Utilisation & Dangers \\
\hline
    Anisole & 100-66-3 & 108.1 & \textcolor{orange}{Synthèse} & \cghspic[scale=0.4]{exclam} \cghspic[scale=0.4]{flame}\\
\hline
    Chlorure d’aluminium anhydre & 7446-70-0 & 133.3 & \textcolor{orange}{Synthèse} & \cghspic[scale=0.4]{acid} \\
\hline
    Chlorure de Fer anhydre & 7705-08-0 & 162.2 & \textcolor{orange}{Synthèse} & \cghspic[scale=0.4]{acid} \cghspic[scale=0.4]{exclam}\\
\hline
    Chlorure d'isobutanoyle & 79-30-1 & 106.5 & \textcolor{orange}{Synthèse} & \cghspic[scale=0.4]{acid} \cghspic[scale=0.4]{flame} \\
\hline
    Dichlorométhane sec & 75-30-2 & 84.9 & \textcolor{orange}{Synthèse}, \textcolor{purple}{Lavage} & \cghspic[scale=0.4]{exclam} \cghspic[scale=0.4]{health} \\
\hline
    Soude & 1310-73-2 & 40 & \textcolor{purple}{Lavage} & \cghspic[scale=0.4]{acid} \\
\hline
    Solution de carbonate de potassium saturée & 584-08-7 & 138.2 & \textcolor{purple}{Lavage} & \cghspic[scale=0.4]{exclam} \\
\hline
    Sulfate de sodium anhydre & 7757-82-6 & 142 & \textcolor{purple}{Lavage} & // \\
\hline
    Acide chlorhydrique concentrée & 7647-01-0 & 36.5 & \textcolor{purple}{Lavage} & \cghspic[scale=0.4]{acid} \cghspic[scale=0.4]{exclam} \\
\hline
    Solution saturée en chlorure d'ammonium & 12125-02-9 & 53.5 & \textcolor{purple}{Lavage} & \cghspic[scale=0.4]{exclam}\\
\hline 
    Cyclohexane & 110-82-7 & 84.2 & \textcolor{brown}{CCM} & \cghspic[scale=0.4]{exclam} \cghspic[scale=0.4]{flame} \cghspic[scale=0.4]{health} \cghspic[scale=0.4]{aqpol} \\
\hline
    Éther diéthylique & 60-29-7 & 74.12 & \textcolor{brown}{CCM} & \cghspic[scale=0.4]{exclam} \cghspic[scale=0.4]{flame} \\
\hline
\end{tabularx}
\end{center}

\end{document}

I defined a \cghspic command that does the vertical centering.

Note that {\color{<color>} text} should better be

\textcolor{<color>}{text}

and I amended the code accordingly. I also used \RaggedRight to avoid wide interword spaces in the first column.