Interlac 648 Alkyd Topcoat is an alkyd coating used as a topcoat. Used as a distinctive, highly visible coating for the rapid identification of critical areas. A one-component alkyd coating formulated with special fluorescent pigments for maximum visibility. When applying by brush and roller for an ideal appearance, two coats of Interlac 648 may be required for certain colours to achieve uniform coverage. Parameters on this page: dry film thickness 40-55 µm (1.6-2.2 mil), theoretical spreading rate 10.80 m²/L, number of components: one-component. Comparable models from the same brand: Interlac 665 alkyd topcoat, Interlac 789 single-coat system, Interdur 8860 polyurethane topcoat.
Parameter source: AKZONOBEL original technical data sheet (TDS) for Interlac 648 Alkyd Topcoat; spreading rate and other values are converted from TDS parameters and provided for product 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 | 54% |
|---|---|
| Dry Film Thickness | 40-55 µm (1.6-2.2 mil) |
| Theoretical Spreading Rate | 10.80 m²/L |
| VOC | 370 g/L UK - PG6/23(04), Appendix 3; coating hazards GB … |
| Density / Specific Gravity | 1.00 kg/L (8.3 lb/gal) |
| Number of Components | One-component |
| Flash Point | 40°C (104°F) |
| Thinner | Do not exceed the thinning limits of local environmental regulations |
| Mixing Ratio | N/A |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A one-component alkyd coating formulated with special fluorescent pigments for maximum visibility
Used as a distinctive, highly visible coating for the rapid identification of critical areas. These areas typically include marker buoys, lifeboats, handrails and emergency exit routes.
Normally applied over an approved alkyd anticorrosive primer or undercoat.
INTERLAC 648 orange
| Gloss | Matt |
|---|---|
| Volume Solids | 54% |
| Typical thickness | Dry film thickness 40-55 µm (1.6-2.2 mil), equivalent to wet film thickness 74-102 µm (3-4.1 mil) |
| Theoretical Spreading Rate | At 50 µm dry film thickness and the stated volume solids, 10.80 m²/L; at 2 mil dry film thickness and the stated volume solids, 433 ft²/US gal |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Air spray, brush, roller; drying time; self-recoating interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 5°C (41°F) | 18 h | 72 h | 36 h | Unlimited¹ |
| 15°C (59°F) | 9 h | 36 h | 24 h | Unlimited¹ |
| 25°C (77°F) | 6 h | 24 h | 16 h | Unlimited¹ |
| 40°C (104°F) | 4 h | 8 h | Unlimited¹ | |
¹ See Definitions and Abbreviations from the International Paint Protective Coatings division.
| Flash point (typical) | 40°C (104°F) |
|---|---|
| Product weight | 1.00 kg/L (8.3 lb/gal) |
| Volatile Organic Compounds | 370 g/L UK - PG6/23(04), Appendix 3; coating hazards GB 30981.2-S-Pb≤1000-NC; complies with GB 30981.2-2025 |
All surfaces to be coated must be clean, dry and free of contaminants. Before application, all surfaces must be assessed and prepared in accordance with ISO 8504:2019.
Oil and grease must be removed in accordance with the SSPC-SP1 solvent cleaning standard.
Primed surfaces: Interlac 648 must always be applied over the recommended anticorrosive primer. The primer surface must be dry and free from any contamination, and Interlac 648 must be applied within the specified recoating interval (refer to the relevant product data sheet).
Areas of cracking, damage, etc. must be prepared to the specified standard (e.g. Sa 2½ (ISO 8501-1:2007) or SSPC SP6 abrasive blasting standard, or SSPC SP11 power tool cleaning standard), and the primer repaired before applying Interlac 648.
| Mixing | This product is a single-component coating; stir thoroughly with a power mixer before each use |
|---|---|
| Mixing ratio | N/A |
| Suitable for airless spray | Not recommended |
| Air Spray | Suitable | Spray gun | DeVilbiss MBC or JGA |
| (with pressure pot) | Air nozzle | 704 or 765 | |
| Nozzle | E | ||
| Air spray (conventional) | Recommended | Use suitable dedicated equipment. | |
| Brush | Suitable | Typical thickness 25–40 µm (1.0–1.6 mils) |
When applying Interlac 648 by brush, ensure that the specified dry film thickness is achieved; multiple coats may be required.
| Roller application | Suitable | Typical thickness 25–40 µm (1.0–1.6 mils) |
| Thinner | International GTA004 | Do not exceed the thinning limits of local environmental regulations |
| Cleaner | International GTA004 |
|---|---|
| Interruption of work | Flush all equipment thoroughly with International thinner. All unused paint shall be stored in closed containers. After a period of storage, skinning may occur in partly filled containers and the viscosity may increase. Strain the paint before use. |
| Cleaning | All equipment shall be cleaned with International thinner immediately after use. Periodic flushing of spray equipment during application is also recommended. The frequency of cleaning depends on the quantity sprayed, temperature and time, including all interruptions. |
Surplus paint and empty containers must be disposed of in accordance with the relevant regional regulations.
Interlac 648 is designed to provide a highly decorative topcoat and must always be applied over an approved anticorrosive system.
For maximum opacity, Interlac 648 should be applied in two coats over Interlac 287 white intermediate coat to ensure complete opacity.
When applying Interlac 648 by brush or roller, multiple coats are necessary to achieve the specified total system dry film thickness.
Gloss and surface evenness depend on the application method. Avoid mixing different application methods as far as possible.
When applying by brush and roller for an ideal appearance, two coats of Interlac 648 may be required for certain colours to achieve uniform coverage.
Over-application of Interlac 648 will extend the minimum recoating time and handling time and adversely affect long-term recoating performance.
Premature exposure of Interlac 648 to standing water may cause discolouration, which may be permanent. As the fluorescent colour is the main feature of Interlac 648, care must be taken to ensure that this does not occur.
Interlac 648 is not designed for continuous immersion in water.
Interlac 648 is not suitable for exposure to acidic or alkaline environments.
Interlac 648 will chalk to some extent, causing the colour to gradually fade over time. Under typical atmospheric exposure conditions, Interlac 648 should be renewed at annual intervals to maintain the fluorescent effect.
Note: VOC values are typical and for guidance only. They may vary with colour and general production tolerances.
Interlac 648 is normally suitable for application over Interlac 287, as the final two coats of an anticorrosive alkyd system.
The following primers are also approved for use with Interlac 648: Interprime 106, Interprime 198, Interprime 205, Interprime 306, Interprime 466. Interlac 648 is suitable for self-overcoating.
For other suitable primers, consult International.
| For further information on the industry standards, terms and abbreviations used in this datasheet, see www.international-pc.com | In the following documents on the website: • Definitions and abbreviations • Surface preparation • Coating application • Theoretical and practical spreading rate. These sections are also available as separate publications 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 | |
| 5 L | 5 L |
For other packaging sizes, contact AkzoNobel.
Packaging Specifications
| 5 L | 5.2 kg |
|---|
| Shelf life | Minimum 24 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 item codes of Interlac 648 Alkyd Topcoat 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 |
|---|---|---|
| HXA027 Orange | — | 5 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.
