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Table 9 Fire Toxicity of polyurethane foam and polyisocyanurate foam in a range of conditions, represented as a material-LC50 (Stec & Hull 2011)

From: The fire toxicity of polyurethane foams

Material Fire conditions ϕ Material-LC50/g m−3
Polyurethane Foam Smouldering - 337.2
Well-ventilated 0.69 15.7
Under-ventilated 1.24 10.3
Under-ventilated 2.00 11.4
Polyisocyanurate Foam Smouldering - 498.4
Well-ventilated 0.75 16.5
Under-ventilated 1.34 10.7
Under-ventilated 1.97 8.3