Fire Mate is a intumescent acrylic sealant that swells when exposed to temperatures in excess of 125C to prevent the passage of fire and smoke which also has a fire rating of up to 5 hours in certain joint configurations. · · · Available in packs of 25 · · Acoustic rates to BS EN ISO 140/3 · · Acoustic rates to BS EN ISO 140/3 · · Tested for air permeability to EN13141-1 · · Slow evaporation rate · · Solubility in water: Miscible · · Highly viscous (250-350 kinematic viscosity) · · Boiling point/range: 100C · · PH: 8.5 – 9.9