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
- MITM11571
- Product Functions
- Single Ingredient
- Yes
- Technologies
- Product Families
Features & Benefits
- Labeling Claims
- Product Features
Applications & Uses
- Product End Uses
- Markets
- Applications
- Product Applications
- Intumescent coatings
- On account of its low water solubility, Exolit® AP 428 is particularly suitable as an acid donor for intumescent coatings. Other essential components of intumescent systems include a binder, a carbon donor and a blowing agent. 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, BS, ASTM, UL, Chinese Standards and others. The application of Exolit® AP 428 based intumescent coatings on wood or plastics enables these materials to qualify for Building Material Class B (EN 13501-1). Exolit® AP 428 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 428 is a suitable non-halogenated flame retardant for polyurethane foams. If handling of Exolit AP 428 as a solid is not possible we recommend the dosage of the flame retardant by preparing an Exolit® AP 428/polyol-suspension. Because of the low acid number of Exolit AP 428, it is also possible to incorporate this flame retardant in an Exolit® AP 428/isocyanate suspension. To prevent the solids from settling, the Exolit AP 428 suspensions should be stirred or circulated by pump. The stirrers commonly found in service tanks are adequate for this purpose.
- Other applications
- Exolit® AP 428 has an excellent flame-retardant effect in cellulose-containing materials such as paper and wood products. With chipboard products, A B-classification according to EN 13501-1 can be achieved by adding 15 - 20% Exolit® AP 428. Because of its high heat stability, Exolit® AP 428 is an essential component in intumescent formulations for thermoplastics, particularly polypropylene, for which the classification UL 94 V-0 is specified for applications in the electrical sector. Casting resins based on epoxy resins or unsaturated polyester resins achieve the classification UL 94 V-0 with Exolit® AP 428.
- Intumescent coatings
Properties
- Physical Form
- Soluble In
Regulatory & Compliance
- 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 (SDS)
- Powder
- Color (SDS)
- White
- Explosive Nature (SDS)
- Not explosive
- Flammable Nature (SDS)
- Not classified as a flammability hazard
- Item Number
- Material Compatibility
- Other Hazards
- Dust can form an explosive mixture in air
- Oxidizing Properties (SDS)
- Not oxidizing
- Protect from Freezing
- No
- Temperature Control
- No
- USA/DOT UN Number
- Not Applicable
- Chemical Properties
Value Units Test Method / Conditions Acid Number max. 1.5 mg KOH/g Nitrogen Content 14.0-15.0 %(W/W) Elemental Analysis pH 6.0-8.0 - - Material Composition
Value Units Test Method / Conditions Phosphorus Content 31.0-32.0 %(W/W) Photometer after oxidizing dissolution - Physical Properties
Value Units Test Method / Conditions Moisture Content max. 0.25 %(W/W) Thermo-Gravimetric Analysis at 130°C Particle Size 20.0 µm D50 Viscosity max. 100.0 mPa.s at 25°C, 10% aqueous solution Weight Loss 5.0 %(W/W) Laser Diffraction at 350°C Weight Loss 10.0 %(W/W) Laser Diffraction at 450°C Weight Loss 20.0 %(W/W) Laser Diffraction at 550°C - SDS Physical and Chemical Properties
Value Units Test Method / Conditions Burning Number (SDS) 1.0 - Does not catch fire Density (SDS) 1.9 g/cm³ at 25°C Melting Point (SDS) min. 275.0 °C Self Ignition Temperature (SDS) min. 400.0 °C VDI 2263 mixed 1:1 with diatomaceous earth Self-Accelerating Decomposition Temperature (SADT) (SDS) min. 75.0 °C pH (SDS) 5.0-8.0 - pH (SDS) 5.0-8.0 - at concentration: 10% - Shelf Life & Stability
Value Units Test Method / Conditions Shelf Life 12.0 mo - Thermal Properties
Value Units Test Method / Conditions Decomposition Temperature min. 275.0 °C