Interzinc 2280 Inorganic Zinc-rich Primer is a zinc-rich primer. This zinc-rich primer is compatible with a variety of high-performance coating systems and topcoats and can be used for new construction and maintenance projects, with application areas including bridges, storage tanks, pipelines, offshore equipment, and steel structures. It is a two-component, fast-recoat, fast-drying solvent-borne inorganic silicate zinc-rich primer that meets SSPC Paint 20, Level 2 requirements. If the product to be coated is used under high-temperature conditions, the thickness of Interzinc 2280 should be limited to 50 µm (2 mil). Parameters on this page: dry film thickness 50–75 µm (2–3 mil), theoretical spreading rate 8.67 m²/L, component count two-component.
Parameter source: AKZONOBEL manufacturer's Technical Data Sheet (TDS) "Interzinc 2280 Inorganic Zinc-rich Primer"; values such as spreading rate are converted from TDS parameters and are 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 | 65% |
|---|---|
| Dry Film Thickness | 50–75 µm (2–3 mils) |
| Theoretical Spreading Rate | 8.67 m²/L |
| VOC | 3.83 lb/gal (460 g/L) US Environmental Protection Agency Method 24 2… |
| Density / Specific Gravity | 2.4 kg/L (20.0 lb/gal) |
| Number of Components | Two-component |
| Thinner | Normally no thinning is required |
| Mixing Ratio | 3.55 parts : 1 part (by volume) |
| Colour / Appearance | Green-grey, INTERZINC 2280 |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
One of the Interzinc 22 series products.
This is a two-component, fast-recoat, fast-drying solvent-borne inorganic silicate zinc-rich primer that meets SSPC Paint 20, Level 2 requirements.
The zinc dust complies with ASTM D520, Type II.
This zinc-rich primer is compatible with a variety of high-performance coating systems and topcoats and can be used for new construction and maintenance projects, with application areas including bridges, storage tanks, pipelines, offshore equipment, and steel structures.
Provides excellent corrosion protection for properly prepared steel substrates, and with a suitable topcoat withstands temperatures up to 540 °C.
Fast-curing primer for use in a variety of climatic conditions.
| Colour | Green-grey, INTERZINC 2280 |
|---|---|
| Gloss | Matt |
| Volume Solids | 65% |
| Typical thickness | Dry film thickness 50–75 µm (2–3 mil) corresponds to wet film thickness 77–115 µm (3.1–4.6 mil). |
| Theoretical Spreading Rate | At 75 µm dry film thickness and the stated volume solids, 8.67 m²/L; at 3 mil dry film thickness and the stated volume solids, 348 ft²/US gal. |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Suitable for airless spray, air spray. Drying time; recommended topcoat recoat interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 5°C (41°F) | 30 min | 3 h | 18 h | Unlimited¹ |
| 15°C (59°F) | 20 min | 1.5 h | 9 h | Unlimited¹ |
| 25°C (77°F) | 10 min | 1 h | 4.5 h | Unlimited¹ |
| 40°C (104°F) | 5 min | 30 min | 1.5 h | Unlimited¹ |
¹ See Definitions and Abbreviations from the International Paint Protective Coatings division. The drying times above are measured at the stated temperatures and 55% relative humidity; at 5 °C they are measured at 60% relative humidity. Before recoating, confirm the film resistance reaches rating 4 by the ASTM D4752 MEK rub test. For recoat details, see the Product Characteristics section.
| Flash point (typical) | Component A 13 °C (55 °F); mixed 13 °C (55 °F) |
|---|---|
| Product weight | 2.4 kg/L (20.0 lb/gal) |
| Volatile Organic Compounds | 3.83 lb/gal (460 g/L) US Environmental Protection Agency Method 24 221 g/kg EC Solvent Emissions Directive content (Council Directive 2010/75/EU) 477 g/L China National Standard GB 23985 coating hazard GB 30981.2-S-Pb≤1000-NC complies with GB 30981.2-2025. For more detailed information, see the "Product Characteristics" section. |
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 8504:2000. Remove oil and grease in accordance with the SSPC-SP1 solvent cleaning standard.
Surface preparation: abrasive blast cleaning to Sa2½ (ISO 8501-1:2007) or SSPC-SP6 (for optimum performance, abrasive blast cleaning to SSPC-SP10). If oxidation occurs between abrasive blast cleaning and application of Interzinc 2280, the surface shall be abrasive blast cleaned again to the specified visual standard.
Surface defects exposed during abrasive blasting must be ground, filled or treated by a suitable method.
Recommended surface roughness 40–75 µm (1.5–3.0 mils).
For steel structures pre-coated with shop primer, Interzinc 2280 is suitable for application to steel components newly coated with zinc silicate shop primer.
If the zinc dust shop primer shows large-scale scattered breakdown or heavy zinc salts, the entire area must be fully sweep blasted.
Not suitable for recoating other types of shop primer; remove them completely by abrasive blasting.
Welds and damaged areas must be blast cleaned to Sa 2½ (ISO 8501-1:2007) or SSPC-SP6.
Damaged/repair areas: all damaged areas should be blast cleaned to Sa 2½ (ISO 8501-1:2007) or SSPC-SP6. However, small areas may be cleaned with power tools to Pt3 (JSRA SPSS:1984) or SSPC-SP11, provided the area is not polished. Then, apply the recommended epoxy zinc dust primer to
| repair the area | - Consult International Paint for specific advice. |
|---|
| Mixing | Interzinc 2280 is supplied in two containers: liquid base (Component A) and zinc powder (Component B). Zinc powder (Component B) should be added slowly to the liquid base (Component A) under mechanical agitation. Never add the liquid base to the zinc powder. Before application, the paint should be filtered. During spraying, the paint in the container should be kept under continuous agitation. Once mixed, the paint should be used within the specified pot life. |
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| Mixing ratio | 3.55 parts : 1 part (by volume) |
| Pot life | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 12 h | 8 h | 4 h | 2 h |
| Suitable for airless spray | Recommended: nozzle diameter 0.38–0.53 mm (15–21 thousandths of an inch); total paint pressure at the nozzle not less than 112 kg/cm² (1593 psi) |
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| Air Spray | Recommended | Spray gun | DeVilbiss MBC or JGA |
| Air nozzle | 704 or 765 | ||
| (with pressure pot) | Nozzle | E | |
| Brush | Applicable — for small-area repair only | Typical thickness 25–50 µm (1.0–2.0 mils) | |
| Roller application | Not recommended | ||
| Thinner | International GTA803 | Normally no thinning is required. |
(or GTA 415). In extreme cases, consult the local technical representative.
Do not thin beyond the requirements of local environmental regulations.
| Cleaner | International GTA803 or International GTA415 |
|---|---|
| Interruption of work | Do not leave paint in hoses, spray guns or spray equipment. Flush all equipment thoroughly with International thinner. Once mixed, paint should not be resealed; if work is interrupted for too long, mix a fresh batch. |
| Cleaning | All equipment should be cleaned immediately after use with International GTA 803. Flushing spray equipment periodically during daily work is good practice. Cleaning frequency depends on the volume sprayed, temperature, spraying time, including interruptions, and other factors. |
All surplus paint and empty containers must be disposed of in accordance with the appropriate local laws/regulations.
Before recoating, the product must be clean, dry and free of soluble salts and excessive zinc corrosion products.
The temperature of the surface to be coated must be at least 3 °C (5 °F) above the dew point.
Ensure adequate ventilation when applying Interzinc 2280 in confined spaces.
In warm climates (generally above 28 °C (82 °F)), a certain amount of thinner may be added for ease of application; International GTA803 is recommended.
Before recoating, perform a solvent rub test in accordance with ASTM D4752. A rating of 4 indicates satisfactory cure for recoating.
If the relative humidity is below 55%, curing is hindered. Humidity can be increased with steam or water spray, but adding a low-humidity curing accelerator* is more effective. Recoat times at 15 °C (59 °F) are as follows;
| Relative humidity (%) | 20 | 30 | 40 |
| Minimum recoat interval | 24 h | 10 h | |
The Interzinc 2280 application guide contains further information on expected curing times at low relative humidity.
Excessive film thickness or overcoating of Interzinc 2280 can cause cracking. If cracking occurs, the affected areas must be removed completely by abrasive blasting and then recoated in accordance with the original coating system.
Apply with care to avoid dry film thickness exceeding 125 µm (5 mils).
If the product to be coated is used under high-temperature conditions, the thickness of Interzinc 2280 should be limited to 50 µm (2 mil). Without a topcoat, Interzinc 2280 can withstand a long-term dry service temperature of 400°C (752°F); however, when used as a primer for Intertherm 50, it can withstand a dry service temperature of 540°C (1004°F).
Interzinc 2280 without a topcoat is not suitable for exposure to acid or alkaline environments or long-term immersion in water.
The product holds the following specification approval: ASTM A490 Grade B slip coefficient. Note: VOC values are typical and intended for guidance only. The values may vary with factors such as colour differences and normal production tolerances.
Although the low-molecular-weight reactive additive becomes part of the film when cured under normal ambient conditions, analysis by EPA Method 24 shows that it also affects the VOC value.
*Available only in Europe, China, the Middle East, Africa and Russia.
When Interzinc 2280 requires self-recoating due to low dry film thickness, the coating surface must be fresh and unweathered. The subsequent coat of Interzinc 2280 must be applied at a minimum dry film thickness of 50 µm (2 mil) to ensure good film formation.
Before recoating with the recommended topcoat, ensure Interzinc 2280 has fully cured (see above). If weathering has occurred, wash with fresh water to remove all zinc salts from the surface; if necessary, scrub with a bristle brush.
Typical compatible topcoats and intermediate coats are:
| Intercure 200 | Intergard 475HS |
|---|---|
| Intercure 420 | Interseal 670HS |
| Intergard 251 | Intergard 269 |
| Intertherm 50 | Under certain conditions, Interplus 356 requires a mist coat of suitable viscosity to reduce blistering. This depends on the degree of ageing of Interzinc 2280, surface roughness, and environmental conditions during curing and application. In addition, an epoxy sealer such as Intergard 269 can also be used to reduce blistering. |
For other suitable topcoats/intermediate coats, consult International Paint.
| 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 rate • Interzinc 2280 application guide. Separate copies of these sections are available 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 | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 15.3 L | 11.93 L | 15 L | 3.36 L | 20 L |
For other packaging sizes, contact AkzoNobel.
| Packaging Specifications | Component A | Component B |
| 15.3 L | 14.5 kg | 25.6 kg |
| Shelf life | At least 12 months at 25 °C (77 °F). |
|---|
Thereafter, inspection is required. Store in a dry, cool environment away from heat and sources of ignition.
© 2026/5/27 AkzoNobel. All rights reserved.
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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 numbers for Interzinc 2280 Inorganic Zinc-rich Primer 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 |
|---|---|---|
| QHA080 | — | 15.29 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.
