Enhanced TDS
Identification & Functionality
- Blend
- No
- Chemical Family
- Chemical Name
- Country of Origin
- Function
- Flame Retardant
- Molecular Formula
- (NH₄PO₃)ₙ (n - min.1000)
- Product Code
- MITM16382
- Product Functions
- Single Ingredient
- Yes
- Technologies
- Product Families
Features & Benefits
- Product Features
- Product Benefits
- Non-halogenated flame retardant with favorable environmental and health profile, free of SVHCs *)
- Greatly reduced water solubility, low viscosity in aqueous suspension, very low acid number.
- Particularly suitable as an ”acid donor” for intumescent coatings thanks to its low water solubility. Steel structures coated with intumescent paints can meet therequirements 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).
- Excellent flame-retardant effect in cellulose-containing materials such as paper and wood products. With chipboard products, the DIN EN 13501-1 classification canbe achieved by adding 15-20 % Exolit™ AP 422 A.
- Excellent flame-retardant effect in polyolefin-based wood plastic composites (WPC) with high wood contents (> 50%) at a dosage of 10-15% Exolit AP 422 A.
- Imparts a good flame-retardant effect to adhesives and sealants when it is incorporated into the base formulation at the rate of 10-20%.
- Efficient non-halogenated alternative for conventional flame retardants (e.g., TCPP) in various PUR applications, with minimum impact on reaction profiles andmaterial properties.
- An essential component in intumescent formulations for thermoplastics, particularly polypropylene, for which the classification UL 94-V0 is specified for applications inthe electrical sector. However, for PP V-o injection molding applications Exolit AP 766 as ready-made intumescent formulation is recommended.
- 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.
- Can be used in transport applications to obtain good fire, smoke and toxicity results.
- Biodegradable by breaking down to naturally occurring phosphate and ammonia.
Applications & Uses
- Markets
- Applications
- Product Applications
- Intumescent coatings
- On account of its low water solubility, Exolit AP 422 A is particularly suitable as an ”acid donor” for intumescent coatings. Other essential components ofintumescent systems include a binder, a carbon donor (e.g., pentaerythritol) and a blowing agent (e.g. melamine). On exposure to flame, intumescent coatings form acarbonaceous foam which effectively shields the underlying material from temperature increases. Steel structures coated with intumescent paints can meet the requirements offire resistance classes specified in EN, DIN, BS, ASTM and others. The application of Exolit AP 422 A based intumescent coatings on wood or plastics enables these materialsto qualify for Building Material Class B (DIN EN 13501-1). Exolit AP 422 A imparts a good flame-retardant effect to adhesives and sealants when it is incorporated into the baseformulation at the rate of 10-20 %.
- Polyurethane foams
- Exolit® AP 422 A is a highly suitable replacement for TCPP in pentane-blown rigid PIR/PUR foams. B2 ratings according to DIN 4102 can be safely achieved with dosages in therange of 10-15 php, depending on the target density.
- In rigid integral skin foam, e.g., for E&E applications, Exolit AP 422 can be used to achieve UL 94 (V0) ratings. Unlike many liquid additive flame retardants, Exolit AP 422 Adoes not show an unwanted plasticizing effect.
- Exolit AP 422 A can also be used in flexible polyester-based PUR foams. Owing to the extremely low vapor pressure and water-solubility, it is an excellent flame retardant forlow-emission foams, e.g., in automotive or consumer applications.
- Exolit® AP 422 A can be easily dispersed in most common polyols and circulated in standard production setups. It shows significantly lower abrasiveness than other filler-typeadditives.
- Compared to many other APP grades with higher acid number and solubility, Exolit® AP 422 A shows minimum impact on amine catalysts,
- Other applications
- In composites for transport applications it can be used to control fire, smoke and toxicity. Especially in railway (EN 45545-2) and aviation (FAR 25.853)applications low smoke density and toxicity is a key requirement. Exolit AP 422 A has an excellent flame-retardant effect in cellulose-containing materials such as paper andwood products. With chipboard products, the DIN EN 13501-1 classification can be achieved by adding 15-20 % Exolit® AP 422 A. Exolit® AP 422 A shows an excellent flameretardant effect in polyolefin based wood plastic composites (WPC) with high wood contents (> 50%) at a dosage of 10-15% Exolit® AP 422 A .Because of its high heat stability, Exolit® AP 422 A is an essential component in intumescent formulations for thermoplastics, particularly polypropylene, for which the classification UL 94-V0 is specified forapplications in the electrical sector. However, for PP V-o injection molding applications Exolit AP 766 as ready-made intumescent formulation is recommended. Casting resinsand composites based on epoxy resins or unsaturated polyester resins achieve the classification UL 94-V0 with Exolit® AP 422 A . Combinations of AP 422 A with ATH showsynergistic effects in UL94 and LOI tests.
- Intumescent coatings
Regulatory & Compliance
- Compliance (Industry Standards)
- Compliance (Regulatory)
- Manufacturing Facility Standards
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
- Colorless free-flowing powder
- Appearance (SDS)
- White powder
- Color (SDS)
- White
- Dust Explosion Class (SDS)
- Not capable of dust explosion
- Explosive Nature (SDS)
- Not explosive
- Flame Rating
- Flammability (SDS)
- The product is not flammable
- Flammable Nature (SDS)
- Not flammable
- Item Number
- Labeling Claims
- Material Compatibility
- Odor (SDS)
- Almost odorless
- Other Hazards
- No additional hazards are known except those derived from the labelling
- Physical Form
- Processing & Application Methods
- Product End Uses
- Protect from Freezing
- No
- Temperature Control
- No
- USA/DOT UN Number
- Not Applicable
- Chemical Properties
Value Units Test Method / Conditions pH 5.5-7.5 - - Material Composition
Value Units Test Method / Conditions Nitrogen Content 14.0-15.0 %(W/W) at 130°C Phosphorus Content 31.0-32.0 %(W/W) - Physical Properties
Value Units Test Method / Conditions Bulk Density 0.7 g/cm³ Moisture Content max. 0.25 %(W/W) after oxidizing dissolution Viscosity max. 100.0 mPa.s 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 - SDS Physical and Chemical Properties
Value Units Test Method / Conditions Bulk Density (SDS) 0.8 g/L Density (SDS) 1.9 g/cm³ At 77°F Log Partition Coefficient (Log Pow) (SDS) max. -1.5 - n-Octanol/Water pH (SDS) 5.5-7.5 - at 20°C, 10% Concentration - Shelf Life & Stability
Value Units Test Method / Conditions Shelf Life 12.0 mo - Thermal Properties
Value Units Test Method / Conditions Decomposition Temperature 275.0 °C ISO 2114