The red color of the fire retardant is caused by the chemical component iron oxide, commonly known as rust. The retardant is colored with the component so it is easily seen from the air and by ...

Phos-Chek is made from ammonium phosphate – a salty compound similar to many common fertilizers – which is mixed with iron oxide to create its bright pink color. Manufactured as a powder ...

The red color of the fire retardant is caused by the chemical component iron oxide, commonly known as rust. The retardant is colored with the component so it is easily seen from the air and by ...