PYROGUARD® FRX-50 can be applied to either a wet or dry substrate in a pad, sprays, or size press. A dry weight pickup of 12% – 14% is recommended. Recommended drying temperature is ambient-250° F. This product has passed the NFPA 701 vertical flame test, for non-durable fire retardants on: 100% cotton, 50/50 cotton/polyester blend, and on 100% polyester, with a minimum of 13% dry weight pickup.
Appearance: Clear, slightly amber liquid
pH (2% solution): 6.5 ± 0.4
Solubility: Completely soluble in water
Specific Gravity: 1.25
Solids: 46% ± 1%
Stability: Stable for at least one year if stored in a cool, dry location
Water Resistance: Poor