Interchar 2090 is a fire protection coating. A version with improved water resistance, providing up to 6 months of exterior exposure performance for Interchar 2090 without a topcoat in environments without standing water/large flowing water or prolonged high humidity. Independently tested by certified laboratories, it meets the requirements of BS476 Parts 20-21, AS 1530.4-2014 and AS 4100, and has obtained assessment and certification from third-party bodies. To achieve ideal drying conditions, when applying Interchar 2090 at a dry film thickness greater than 750 µm (30 mil), 2 coats are recommended. Parameters on this page: volume solids 75% ± 3%, dry film thickness 300–1500 µm (12–60 mil), theoretical spreading rate 1 m²/L.
Parameter source: AKZONOBEL original technical data sheet (TDS) 'Interchar 2090'; values such as spreading rate are converted from TDS parameters and are for selection reference only.
The above content is compiled from the manufacturer's datasheet and this site's parameter tables. For selection, coating systems and lead times, pleaseContact Usfor confirmation.
This page carries the full TDS for this product, translated from the manufacturer's original document. No file download is needed; for an original-language copy, send an enquiry.
| Volume Solids | 75% ± 3% |
|---|---|
| Dry Film Thickness | 300–1500 µm (12–60 mil) |
| Theoretical Spreading Rate | 1 m²/L |
| VOC | 230 g/kg EC Solvent Emissions Directive content (Council Directive 2010/75… |
| Density / Specific Gravity | 1.38 kg/L (11.5 lb/gal) |
| Number of Components | One-component |
| Flash Point | 4°C (39°F) |
| Thinner | Generally not required |
| Colour / Appearance | White (HFA290), White C (HFA292) INTERCHAR… |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A one-component, solvent-borne, boric acid-free, high-solids, low-VOC intumescent fire protection coating designed for fire protection of steel structures.
Independently tested by accredited laboratories, compliant with the requirements of BS476 Parts 20-21, AS 1530.4-2014 and AS 4100, and assessed and certified by third-party bodies.
Provides up to 2 hours of fire protection for "I"-section steel, columns and hollow sections.
Due to fast drying and rapid recoatability, it is suitable for both on-site and off-site application, and can be applied over a range of approved primer systems.
A version with improved water resistance, providing up to 6 months of exterior exposure performance for Interchar 2090 without a topcoat in environments without standing water/heavy flowing water or prolonged high humidity.
| Colour | White (HFA290), White C (HFA292) INTERCHAR 2090 |
|---|---|
| Gloss | Matt |
| Volume Solids | 75% ± 3% (measured in accordance with ISO 3233 and the ICF method) |
| Typical thickness | DFT 300–1500 µm (12–60 mil) equivalent to WFT 400–2000 µm (16–80 mil); a DFT of 1.5 mm can be achieved in a single coat. |
| Theoretical Spreading Rate | 1 m²/L at 750 µm dry film thickness and the stated volume solids; 40 ft²/US gal at 30 mil dry film thickness and the stated volume solids |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Suitable for airless spray and brush. Drying time: self-overcoating interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 10°C (50°F) | 60 min | 24 h | 8 h² | Unlimited¹ |
| 15°C (59°F) | 40 min | 20 h | 6 h² | Unlimited¹ |
| 25°C (77°F) | 30 min | 16 h | 4 h² | Unlimited¹ |
¹ Refer to the Definitions and Abbreviations of International's Industrial Protective Coatings division. ² Immediately after application of the final coat of Interchar 2090, the sealer coat should be applied (at least 2–4 h for Intersheen 54 and 579; 24 h for other topcoats). However, the dry film thickness must be checked to ensure the fire protection coating has reached the specified thickness before application of the sealer coat.
All drying time data refer to a typical dry film thickness of 750 µm (30 mil).
If the temperature is 25 °C (77 °F) or above, use the tropical grade. See 'Product Characteristics'.
| Flash point (typical) | 4°C (39°F) |
|---|---|
| Product weight | 1.38 kg/L (11.5 lb/gal) |
| Volatile Organic Compounds | 230 g/kg EC Solvent Emissions Directive content (Council Directive 2010/75/EU); 286 g/L EU Product Directive (Council Directive 2004/42/EC); coating hazard GB 30981.2-S-Pb≤1000-NC compliant with GB 30981.2-2025. For more detailed information, refer to the "Product Characteristics" section. |
All steel surfaces to be coated must be clean, dry and free of contamination. Before application, all surfaces must be assessed and prepared in accordance with ISO 8504:2000.
Oil and grease must be removed by solvent cleaning in accordance with SSPC-SP1.
Pre-primed surfaces: Interchar 2090 should always be applied over the recommended anti-corrosive primer. The primer surface should be dry, free from contamination, and Interchar 2090 must be applied within the specified recoat interval (refer to the relevant product data sheet).
Before application of the product, areas with cracks, damage and other defects shall be prepared to the specified standard (for example: Sa2½ (ISO 8501-1:2007) or SSPC SP6 abrasive blast cleaning standard, or power tool cleaning to SSPC SP11 standard) and the primer shall be repaired.
For more information on surface preparation, refer to the Interchar 2090 Application Manual.
Zinc-rich primed substrates: Interchar 2090 can be applied over approved epoxy zinc-rich primers. Before application of Interchar 2090, ensure the primer surface is clean, dry, free from contamination and zinc salt deposits. Ensure the zinc primer is fully cured before recoating. A tie coat such as Intergard 269 or Intergard 276 is recommended to prevent accumulation of zinc salts.
| Mixing | This product is a single-component coating; stir thoroughly with a power mixer before each use |
|---|---|
| Suitable for airless spray | Recommended nozzle tip size 0.48–0.58 mm (19–23 thou); total paint pressure at the nozzle not less than 176 kg/cm² (2503 psi) |
| Air Spray | Not recommended (with pressure pot) |
| Thinner | Generally not required |
| Cleaner | Use a cleaning solvent that complies with local regulations. Consult the local representative for specific recommendations. |
| Interruption of work | Material must not remain in the spray hose, spray gun or spray equipment. Thoroughly flush all equipment with International thinner. After storage in partially filled containers, surface skinning or an increase in viscosity may occur. |
| Cleaning | All equipment should be cleaned immediately after use with International thinner. Flushing spray equipment periodically during daily work is good practice. Cleaning frequency depends on the volume sprayed, temperature, spraying time, including delays, and other factors. |
All surplus paint and empty containers must be disposed of in accordance with the relevant local laws/regulations.
Consult for detailed solvent-borne Interchar application guidance before use.
Airless spray application gives the ideal result, achieving the required film thickness in one coat. Achieving the required film thickness is more difficult with methods other than airless spray. When applying Interchar 2090 by brush, multiple coats may be required to achieve the specified total system dry film thickness.
To obtain ideal drying conditions, application of Interchar 2090 at a DFT greater than 750 µm (30 mil) in 2 coats is recommended. Observe the minimum recoat interval between coats. Interchar 2090 can be applied at a single-coat DFT of 1500 µm (80 mil), but drying time, hardness development and handling time will be extended. Handling time, as a function of total system DFT, humidity and ventilation rate, will vary with these conditions.
For optimum application and drying, the air and steel substrate temperature shall be above 10 °C (50 °F), with a relative humidity below 85%. The surface temperature to be coated shall be at least 3 °C (5 °F) above the dew point.
Ensure adequate ventilation when applying Interchar 2090 in confined spaces.
The final appearance of Interchar 2090 depends on the application method. For visible areas, spray application is preferred. Additional treatment may be required to obtain a high decorative finish. The final surface appearance of the product depends on the application method.
Interchar 2090 (with or without topcoat) should be protected from contact with standing and flowing water. Interchar 2090 must not be used in areas subject to frequent immersion/soaking.
The sealer applied over Interchar 2090 must form a defect-free, continuous film.
Interchar 2090 White C is a version with improved water resistance, providing up to 6 months of exterior exposure performance without a topcoat. However, with or without a topcoat, Interchar 2090 should be protected from contact with standing or flowing water.
Interchar 2090 is not designed for frequent water immersion. Note: when the environmental exposure category is greater than indoor dry conditions (C1, as defined in ISO 12944 Part 2), a suitable topcoat must be used over Interchar 2090. For more information, refer to the Application Manual.
Tropical version: to improve application performance in hotter climates, a version for tropical climates is available (White HFA291, White C HFA293). The Interchar 2090 tropical version has the following properties: volume solids: 75% ± 3%; volatile organic compound content: 305 g/L; flash point: 27 °C (81 °F).
Drying time: recoating interval
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 25°C (77°F) | 60 min | 24 h | 8 h² | Unlimited¹ |
| 40°C (104°F) | 30 min | 16 h | 6 h² | Unlimited¹ |
¹ Refer to the Definitions and Abbreviations of International's Industrial Protective Coatings division.
² After application of the final coat of Interchar 2090 and achievement of the required degree of cure, the sealer coat should be applied as soon as possible (at least 2–4 h for Intersheen 54 and Intersheen 579; 24 h for other topcoats). Note that the dry film thickness must be checked to ensure the film has reached the specified thickness before application of the sealer coat.
Note: VOC values are typical and for guidance only. They may vary with colour and general production tolerances.
The following primers are approved for use with Interchar 2090
| Intercure 200HS | Intergard 251 |
|---|---|
| Intergard 251HS | Intergard 2575 |
| Intergard 269 | Intergard 276 |
| Interprime 306 | Interseal 670HS |
| Interseal 1052 | The following topcoats are approved for use with Interchar 2090 over Interzinc 52 |
| Intersheen 579 | Interthane 870 |
| Interthane 990 | Interthane 990SG |
| For further information on the industry standards, terms and abbreviations used in this datasheet, see www.international-pc.com | Refer to the following documents provided on the website: • Definitions and abbreviations • Surface preparation • Coating application • Theoretical and practical spreading rates • Solvent-borne Interchar application guidance. The content of these sections is also available as a separate publication on request |
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This product must be applied at the production site by professional applicators in accordance with the recommendations in this manual, the Material Safety Data Sheet and the instructions on the container label. Do not use this product without first reviewing the Material Safety Data Sheet (MSDS) that International Paint provides for its customers.
All work related to the application and use of this product must be carried out in accordance with the relevant national health, safety and environmental standards and regulations.
If welding or flame cutting is required on metal coated with this product, dust and fumes will be generated; use appropriate personal protective equipment and adequate local ventilation.
If in doubt about the suitability of this product for the intended use, consult AkzoNobel for further advice.
| Packaging Specifications | ||
| Volume | Packaging | |
| 20 L | 20 L |
For other packaging sizes, contact AkzoNobel.
Packaging Specifications
| 20 L | 30 kg |
|---|
| Shelf life | Minimum 18 months at 25 °C (77 °F). Thereafter, inspection is required. Store in a dry, cool environment away from heat and sources of ignition. |
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Information is subject to the manufacturer's latest version; the manufacturer's latest TDS prevails.
The technical parameters on this page are taken from the product's original manufacturer technical datasheet, the copyright of which belongs to the manufacturer. If a rights holder considers the presentation inappropriate, contact us for verification and handling.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
The factory product codes for Interchar 2090 are as follows.Item No.is the most accurate form when ordering;Colour/colour codecorresponds to the actual colour (RAL, GSB are colour chart codes);Packaging SpecificationsFactory complete-set specification format. Colors not listed may be ordered against the colour card.
| Item No. | Colour / colour code | Packaging Specifications |
|---|---|---|
| HFA291 White | — | 20 L |
This model has a total of1item numbers, all listed on this page; colours outside the table (including special colours and bulk packaging) can be confirmed by phone, delivery dates are advised according to the factory's current production schedule and stock. In the packaging specification, the "+" indicates the complete-set notation for two-component products (base + curing agent), subject to the factory specification; a "—" in the colour column denotes an auxiliary product, or that the item has no colour code in the factory system.
