Enhanced TDS
Identification & Functionality
- Blend
- No
- CASE Ingredients Functions
- Chemical Family
- Chemical Name
- Composite Materials Functions
- Function
- Flame Retardant
- Industrial Additives Functions
- Molecular Formula
- (NH₄PO₃)ₙ (n - min.1000)
- Plastics & Elastomers Functions
- Product Code
- MITM12401
- Single Ingredient
- Yes
- Technologies
- Product Families
Features & Benefits
- CASE Ingredients Features
- Industrial Additives Features
- Labeling Claims
- Materials Features
- Product Benefits
- Optimized for low viscosity in aqueous suspension, low water solubility and low acid number
- Non-halogenated flame retardant with favorable environmental and health profile
- Particularly suitable as an ”acid donor” for intumescent coatings thanks to its low water solubility. Steel structures coated with intumescent paints can meet the requirements of fire resistance classes specified in EN, DIN, BS, ASTM and others. Their application 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 it is incorporated into the base formulation at the rate of 10 - 20%
- Suitable non-halogenated flame retardant for polyurethane foams. PUR Foams with Exolit® AP 435 can be recycled
- Excellent flame-retardant effect in cellulose-containing materials such as paper and wood products. With chipboard products, the DIN EN 13501-1 classification can be achieved by adding 15 - 20 % Exolit® AP 435
- An essential component in intumescent formulations for thermoplastics, particularly polypropylene, for which the classification UL 94-V0 is specified for applications in the electrical sector
- In the case of thermosets like epoxy resins and unsaturated polyester resins, it paves the way for the production of lightweight components with low solids content
- (Bio-)degradable by breaking down to naturally occurring phosphate and ammonia
Applications & Uses
- Application Area
- Coating End Applications
- Compatible Polymers & Resins
- Compatible Substrates & Surfaces
- Industrial Additives End Use
- Markets
- Applications
- Product Applications
- Intumescent Coatings
- On account of its low water solubility, Exolit® AP 435 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 EN, DIN, BS, ASTM and others.
- The application of Exolit® AP 435 based intumescent coatings on wood or plastics enables these materials to qualify for Building Material Class B (DIN EN 13501-1).
- Exolit® AP 435 imparts a good flame-retardant effect to adhesives and sealants when it is incorporated into the base formulation at the rate of 10 - 20 %.
- Polyurethane Foams
- Exolit® AP 435 is a suitable non-halogenated flame retardant for polyurethane foams. If handling of Exolit® AP 435 as a solid is not possible we recommend the dosage of the flame retardant by preparing an Exolit® AP 435 /polyol-suspension. Because of the low acid number of Exolit® AP 435, it is also possible to incorporate this flame retardant in an Exolit® AP 435/isocyanate suspension.
- To prevent the solids from settling, the Exolit® AP 435 suspensions should be stirred or circulated by pump. The stirrers commonly found in service tanks are adequate for this purpose.
- Other Applications
- Exolit® AP 435 has an excellent flame-retardant effect in cellulose-containing materials such as paper and wood products. With chipboard products, the DIN EN 13501-1 classification can be achieved by adding 15 - 20 % Exolit® AP 435.
- Because of its high heat stability, Exolit® AP 435 is an essential component in intumescent formulations for thermoplastics, particularly polypropylene, for which the classification UL 94-V0 is specified for applications in the electrical sector.
- Casting resins and composites based on epoxy resins or unsaturated polyester resins achieve the classification UL 94-V0 with Exolit AP 435. Combinations of AP 435 with ATH show synergistic effects in UL94 and LOI tests.
- Intumescent Coatings
Properties
Packaging & Availability
- Packaging Type
Principal Information
- Group Principal Number
- S000004
- Principal
Storage & Handling
- Storage and Shelf Life Conditions
- Minimum shelf life is 12 months from the date of shipping when stored according to the said conditions.
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 expected to form explosive dust air mixtures
- Item Number
- Other Hazards
- No additional hazards are known except those derived from the labelling
- Oxidizing Properties (SDS)
- Not oxidizing
- USA/DOT UN Number
- Not Applicable
- Thermal Properties
Value Units Test Method / Conditions Decomposition Temperature min. 275.0 °C - Chemical Properties
Value Units Test Method / Conditions Acid Number max. 2.0 mg KOH/g Nitrogen Content 14.0-15.0 %(W/W) Elemental Analysis pH 5.0-8.0 - - Shelf Life & Stability
Value Units Test Method / Conditions Shelf Life 12.0 mo - Physical Properties
Value Units Test Method / Conditions Bulk Density 0.7 g/cm³ Density 1.9 g/cm³ At 25°C Moisture Content max. 0.25 %(W/W) Thermo-Gravimetric Analysis at 130°C Particle Size 17.0 µm D50 Solubility in Water max. 0.5 %(W/W) Viscosity max. 40.0 mPa.s at 25°C, 10% aqueous solution Weight Loss 5.0 %(W/W) at 350°C Weight Loss 10.0 %(W/W) at 450°C Weight Loss 20.0 %(W/W) at 550°C - Material Composition
Value Units Test Method / Conditions Phosphorus Content 31.0-32.0 %(W/W) Photometer after oxidizing dissolution - SDS Physical and Chemical Properties
Value Units Test Method / Conditions Burning Number (SDS) 1.0 - Does not catch fire Decomposition Temperature (SDS) min. 527.0 °F Differential Thermal Analysis heating rate 5 K/min, start of decomposition Density (SDS) 2.0 g/cm³ at 25°C Melting Point (SDS) min. 527.0 °F Self Ignition Temperature (SDS) 338.0 °F VDI 2263 No self-ignition below melting temperature Solubility In Water (SDS) max. 10.0 g/L Vapor Pressure (SDS) max. 0.1 hPa pH (SDS) 4.0-7.0 - 10% aqueous solution