Properties of Reaction Mass and Process Conditions

Density, Viscosity, pH, melting point, boiling point Free acidity or alkalinity in reaction mass Operating maximum/minimum temperature Operating maximum/minimum pressure Corrosive properties of the reaction mass Explosive/inflammable nature 

Presence of suspended solids (crystals) or grit/silica from un-reacted portion of reactants 

Maximum rate of heat evolution in kilocalories per hour 

Possibility of runaway reaction if temperature or feed rate of any reactant is not 

Tendency of reactants to form thick viscous gel due to reasons such as overheat-ing/overcooling/power failures/addition of excess reactants, etc. The gearbox, coupling and motor must be designed accordingly 

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