ASTM E1231-19

Standard Practice for Calculation of Hazard Potential Figures of Merit for Thermally Unstable Materials

1.1 ,This practice covers the calculation of hazard potential figures of merit for exothermic reactions, including:

(1) ,Time-to-thermal-runaway,

(2) ,Time-to-maximum-rate,

(3) ,Critical half thickness,

(4) ,Critical temperature,

(5) ,Adiabatic decomposition temperature rise,

(6) ,Explosion potential,

(7) ,Shock sensitivity,

(8) ,Instantaneous power density, and

(9) ,National Fire Protection Association (NFPA) instability rating.