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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

Ï•

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