Chemical Type: Short-chain low-polymerized ammonium polyphosphate 
Specifications:
PRODUCT NAME      AMMONIUM POLYPHOSPHATE
GRADE                  WATER SOLUBLE
APPEARANCE          WHITE GRANULAR POWDER
P₂O₅ CONTENT  %       ≥45
NITROGENT (N) CONTENT  %   ≥24
PH VALUE (1% WATER SOLUTION)   6.5~8.5
SOLUBILITY (g/100mL H₂O at 25ºC )  >60
SOLUBILITY (g/100mL H₂O at 60ºC )  >98

Features 

1. It is stable and will not change in quality in long-term storage; convenient for transporting and storage; 
2. It is neutral and has good safety and compatibility; won't react with other fire retardants and aids. 
3. High content of P-N with proper proportion; low price.

Application
Widely used in water soluble fire-retardant coating
Can be applied by spray, dip, or pressure treatment
Aqueous solution used in the fire-retardant treatment for wood (i.e. corrugated board, kraft paper), paper, textile, and fibers
Solution mix
250 kg APP : 1,000 kg H20 for wood products (1 to 4 ratio)
200 kg APP : 1,000 kg H20 for paper products (1 to 5 ratio)