$c_{\alpha }$	molar concentration of component $\alpha$
$c_{\mathrm{b}}$	vector of formal concentrations defined by Equation (S27)
$da$	surface element
$dv$	volume element
$e^{\alpha },e_{\alpha }$	base vectors of the $n$-dimensional mixture space, $\alpha =1,\dots , n$
$f_{\sigma }$	base vectors of the $h$-dimensional subspace W, $\sigma =1,\dots , h$
$g^p$	base vectors of the $\left(n-h\right)$-dimensional reaction space, $p=1,\dots , n-h$
$h$	rank of matrix of atomic composition
$j_{\alpha }^w$	mass diffusion flux of component $\alpha$ in the barycentric reference
$j_{\alpha }^{\prime w}$	molar diffusion flux of component $\alpha$ in the barycentric reference
$J$	vector of $n-h$ independent reaction rates
$J_p$	rate of independent reaction $p$
$J^{\alpha }$	moles of component $\alpha$ produced (or consumed) by chemical reactions in unit volume per unit of time (component molar reaction rate)
$M$	vector of molar masses
$M_{\alpha }$	molar mass of component $\alpha$
$n$	number of components
$n$	normal vector on surface
$p$	number of independent reactions
$P^{p\alpha }$	stoichiometric coefficient of component $\alpha$ in (independent) reaction $p$
$r_{\alpha }$	mass of component $\alpha$ produced (or consumed) by chemical reactions in unit volume per unit of time (component mass reaction rate)
$S_{\sigma \alpha }$	number of (pseudo)atoms $\sigma$ in component $\alpha$
$t$	time
$u_{\alpha }^{\mathrm{ref}}$	diffusion velocity of component $\alpha$ in reference ‘ref’
$u_{\alpha }^w$	diffusion velocity of component $\alpha$ in barycentric reference
$v_{\alpha }$	velocity of component $\alpha$
$v^w$	barycentric velocity
$w_{\alpha }$	mass fraction of component $\alpha$
$x_{\mathrm{d}}$	vector of generalized extents of diffusion
$x_{\mathrm{r}}$	vector of generalized extents of reactions
$\mathsf{\xi }$	vector of extents of reactions
${\xi }_p$	extent of the independent reaction $p$
$\rho$	density of (reacting) mixture
${\rho }_{\alpha }$	mass density (mass or weight concentration) of component $\alpha$
$\mathsf{\sigma }$	vector defined by Equation (S19)
$\mathsf{\omega }$	vector defined by Equation (S16)
${\mathsf{\omega }}^{+}$	vector defined by Equation (S20)