Product Description:
TY-423 is a long-chain ammonium polyphosphate. The crystal modification is phase II. (n≥ 500). It is non-flammable, largely insoluble in water, stable and compatible with some polymers. 
Ammonium polyphosphate is an environmentally friendly halogen free flame retardant, which develops its effectiveness through phosphorus / nitrogen synergism. It is usually used with charring agent and foaming agent. The flame retardant treated material foams on exposure to flame. The carbon foam layer so formed protects the polymer through its heat-insulating effect.
Specification:

Item	Unit	Index
Appearance		White Powder
Formula		(NH4PO3)n
Degree of polymerization (n)		≥500
P2O5  Content	%(w/w)	70_73
Nitrogen(N) Content	%(w/w)	13_15
pH Value (10% suspension)		5.5_7.5
Water Content (130℃)	%(w/w)	≤0.5
Solubility in water (25℃)	g/100mL	≤0.5
Viscosity (25° C, 10% suspension)	mPaS	≤100
Density (25℃)	g/cm3	about 1.9
Bulk Density (25℃)	g/cm3	about 0.7
Thermal Decomposition Temp. (5% weight loss)	℃	≥300
Crystal Form		Phase II
Average particle size (D50)	μm	about 20

Note: Average size (D₅₀) from 5μm to 100μm is available..

Applications:

TY-423 can be used with charring agent and foaming agent in the processing of the fire retardant treatment of PE/PP/PU materials, oxygen molecules material or high-grade in tumescent fireproof materials, which can provide good flame retardant efficiency.

. short profile about our product as follows:
1. DIN912 Hexagon Socket Head Cap Screws, Grade 12.9
2. ISO7380 Hexagon Socket Button Head Cap Screws, Grade 10.9
3. DIN7991 Hexagon Socket Flat Head Cap Screws, Grade 10.9
4. DIN916 Hexagon Socket Set Screws, Grade 45H
5. ISO7379 Hexagon Socket Head Shoulder Screws, Grade 12.9
6. DIN931/933, Hex Bolt, Grade 12.9
7. DIN911, Hex Keys (CRV / S2)
8. Anchor (Drop in, Cut, Metric Wedge, Sleeve)