Exolit® AP 423

Exolit® AP 423 is a fine-particle ammonium polyphosphate produced by a special method. The crystal modification is phase II. The product is largely insoluble in water and completely insoluble in organic solvents. It is a white powder, non-hygroscopic and non-flammable.

Principal: Clariant Additives

Functions: Flame Retardant

Chemical Name: Ammonium Polyphosphate

Chemical Family: Ammonium Salts, Polyphosphates

End Uses: Intumescent Coating, Textile Coating

Compatible Polymers & Resins: Epoxies (EP), Phenolics, Polyethylenes (PE), Polypropylenes (PP), Polyurethanes (PU)

Labeling Claims: Biodegradable, Non-Flammable

Enhanced TDS

Identification & Functionality

Blend
No
CASE Ingredients Functions
Chemical Family
Chemical Name
Composite Materials Functions
Country of Origin
Function
Flame Retardant
Molecular Formula
(NH₄PO₃)ₙ (n - min.1000)
Plastics & Elastomers Functions
Product Code
MITM02886
Single Ingredient
Yes
Technologies
Product Families

Features & Benefits

CASE Ingredients Features
Labeling Claims
Product Benefits
  • Low solubility in water, low viscosity in aqueous suspensions and a low acid number
  • Suitable as an ”acid donor” for intumescent coatings. Steel structures coated with intumescent paints can meet the requirements of fire resistance classes specified in DIN, BS or ASTM
  • The application of Exolit® AP 423 based intumescent coatings on wood or plastics enables these materials to qualify for Building Material Class B (DIN EN 13501-1)
  • Imparts a good flame-retardant effect to adhesives and sealants when incorporated into the base formulation at the rate of 10 - 20%
  • Biodegradable by breaking down to naturally occurring phosphate and ammonia
  • Non-halogenated flame retardant with favorable environmental and health profile

Applications & Uses

Coating End Applications
Compatible Polymers & Resins
Compatible Substrates & Surfaces
Markets
Applications
Product Applications
  • Intumescent coatings
    • On account of its low water solubility, Exolit® AP 423 is particularly suitable as an ”acid donor” for intumescent coatings. Other essential components of intumescent systems include a binder, a carbon donor (e.g. pentaerythritol) and a blowing agent (e.g. melamine).
    • On exposure to flame, intumescent coatings form a carbonaceous foam which effectively shields the underlying material from temperature increases.
    • Steel structures coated with intumescent paints can meet the requirements of fire resistance classes specified in DIN, BS or ASTM.
    • The application of Exolit® AP 423 based intumescent coatings on wood or plastics enables these materials to qualify for Building Material Class B (DIN EN 13501-1).
    • Exolit® AP 423 imparts a good flame-retardant effect to adhesives and sealants when it is incorporated into the base formulation at the rate of 10 - 20 %.

Properties

Color (Properties)
Physical Form

Packaging & Availability

Packaging Type

Principal Information

Group Principal Number
S000004
Principal

Other

Appearance (SDS)
Powder
Color (SDS)
White
Dust Explosion Class (SDS)
Not capable of dust explosion
Explosive Nature (SDS)
Not explosive
Flammable Nature (SDS)
Not flammable
Item Number
Odor (SDS)
Odorless
Other Hazards
According to the present state of knowledge, provided that this product is handled correctly, there is no known danger to humans.
Oxidizing Properties (SDS)
Not oxidising
Temperature Control
No
USA/DOT UN Number
Not Applicable
Chemical Properties
ValueUnitsTest Method / Conditions
Nitrogen Content14.0-15.0 %(W/W)%(W/W)Elemental Analysis
pH5.0-7.5-
Material Composition
ValueUnitsTest Method / Conditions
Phosphorus Content31.0-32.0 %(W/W)%(W/W)Photometer after oxidizing dissolution
Physical Properties
ValueUnitsTest Method / Conditions
Bulk Density0.7 g/cm³g/cm³
Density1.9 g/cm³g/cm³at 25°C
Moisture Contentmax. 0.5 %(W/W)%(W/W)Thermo-Gravimetric Analysis at 130°C
Particle Size8.0 µmµmD50
Solubility in Watermax. 1.0 %(W/W)%(W/W)
Viscositymax. 100.0 mPa.smPa.sat 25°C, 10% aqueous solution
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Bulk Density (SDS)0.4 g/cm³g/cm³
Burning Number (SDS)1.0-Does not catch fire
Decomposition Temperature (SDS)min. 527.0 °F°FDifferential Thermal Analysis
Decomposition Temperature (SDS)min. 527.0 °F°FDifferential Thermal Analysis heating rate 5 K/min
Density (SDS)2.0 g/cm³g/cm³
Solubility In Water (SDS)max. 10.0 g/Lg/Lat 25°C
Viscosity (SDS)max. 100.0 mPa.smPa.sat 25°C, 100 g/l
pH (SDS)4.0-7.0-at 25°C, aqueous suspension
Shelf Life & Stability
ValueUnitsTest Method / Conditions
Shelf Life6.0 momo
Thermal Properties
ValueUnitsTest Method / Conditions
Decomposition Temperaturemin. 275.0 °C°C