Table 5.

Logistic function for determining the parameter for each factor.

Factor	Parameter	Logistic function	Equations
Flammability, SFL	Flash point	$S_{\mathit{FL}}=100\times \left(1,-,\left(\frac{1}{1+3.37e^{-0.024x}}\right)\right)$	(5)
Toxicity, STX	Threshold limit values (TLV) for short-term exposure limit (STEL)	$S_{\mathit{TX}}=100\times \left(1,-,\left(\frac{1}{1+403.4288e^{-0.012x}}\right)\right)$	(6)
Reactivity, SR	National Fire Protection Association (NFPA)	$S_R=100\times \left(\frac{1}{1+270.43e^{-2.8x}}\right)$	(7)
Explosiveness, SEXP	Lower and Upper Explosiveness Limit (%UEL–%LEL)	$S_{\mathit{EXP}}=100\times \left(\frac{1}{1+1096.63e^{-0.14x}}\right)$	(8)