Interdur 8807 Solvent-borne Inorganic Zinc Silicate Primer is a zinc-rich primer in the inorganic zinc silicate system. Very suitable as a protective coating for steel structures in pulp and paper mills, sewage and waste treatment plants, chemical processing plants and refineries, and for bridges and tanks. Interdur 8807 is a two-component, solvent-borne inorganic zinc silicate primer. Although the low-molecular-weight reactive additive becomes part of the film when cured under normal ambient conditions, EPA Method 24 analysis shows that it also affects the VOC value. Parameters on this page: dry film thickness 50–100 µm (2–4 mils); theoretical spreading rate 9.60 m²/L; number of components: two.
Source: AKZONOBEL original technical data sheet (TDS) 'Interdur 8807 Solvent-borne Inorganic Zinc Silicate Primer'. Spreading rate and other values converted from the TDS; for 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 | 72% |
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| Dry Film Thickness | 50–100 µm (2–4 mils) |
| Theoretical Spreading Rate | 9.60 m²/L |
| VOC | 4.17 lb/gal (500 g/L), US EPA Method 24, 50… |
| Density / Specific Gravity | 2.62 kg/L (21.9 lb/gal) |
| Number of Components | Two-component |
| Thinner | Generally not required. For more details, see the 'Product Characteristics' section. |
| Mixing Ratio | 2.84 parts : 1 part (by volume) |
| Gloss | Matt |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Interdur 8807 is a two-component, solvent-borne inorganic zinc silicate primer.
Highly suitable as a protective coating for steel structures in pulp and paper mills, sewage and waste treatment plants, chemical processing plants and refineries, and as a coating for bridges and tanks.
INTERDUR 8807, colour: green
| Gloss | Matt |
|---|---|
| Volume Solids | 72% |
| Typical thickness | DFT 50–100 µm (2–4 mil) corresponds to WFT 69–139 µm (2.8–5.6 mil) |
| Theoretical Spreading Rate | At 75 µm dry film thickness and the stated volume solids: 9.60 m²/L; at 3 mils dry film thickness and the stated volume solids: 385 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) | *¹ | 7 h | 2 days | 3 months² |
| 15°C (59°F) | *¹ | 5 h | 24 h | 3 months² |
| 25°C (77°F) | *¹ | 5 h | 18 h | 3 months² |
| 40°C (104°F) | *¹ | 4 h | 12 h | 3 months² |
¹ Not applicable. ² The above drying times are measured at the stated temperature and 55% relative humidity. Before overcoating, verify that the film reaches rating 4 in the ASTM D4752 MEK rub test. For overcoating details, see the Product Characteristics section.
| Flash point (typical) | Component A 17 °C; component B not applicable; after mixing 17 °C |
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| Product weight | 2.62 kg/L (21.9 lb/gal) |
| Volatile Organic Compounds | 4.17 lb/gal (500 g/L), US EPA Method 24; 507 g/L, Chinese national standard GB 23985. For more details, refer to the 'Product Characteristics' section. |
All surfaces of the steel substrate to be coated must be clean, dry and free of contamination. Before painting, all surfaces must be assessed and prepared in accordance with GB 18839-2002.
Where required, remove weld spatter and grind welds and sharp edges smooth.
Blast clean to at least Sa 2 (GB 8923-1:1998); a cleaner surface, such as Sa 2.5 (GB 8923-1:1998), improves primer and coating performance. The blasted surface should be angular and sharp rather than “flat”, with surface roughness of 38–62 µm. The surface to be coated must be free of dust.
Previously painted surfaces: Interdur 8807 cannot be applied directly over existing coatings. All existing coatings must be removed by blasting to at least Sa 2 (GB 8923-1:1998).
| Mixing | Interdur 8807 is supplied in two packs: liquid base (component A) and zinc powder (component B). Add the zinc powder (component B) slowly to the liquid base (component A) under mechanical agitation. Never add the liquid base to the zinc powder. |
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Strain the coating before application, and keep stirring the coating in the container during spraying. Once mixed, use within the specified pot life.
| Mixing ratio | 2.84 parts : 1 part (by volume) |
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| Pot life | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 6 h | 6 h |
| Suitable for airless spray | Recommended nozzle tip 0.38–0.53 mm (15–21 thousandths of an inch); total paint pressure at the nozzle not less than 112 kg/cm² (1593 lb/in²). Use a 33:1 or higher-ratio pump. A circulating line is recommended. Use only PTFE packings. |
|---|---|
| Air Spray | Suitable. For more details, refer to the 'Product Characteristics' section (with pressure pot) |
| Thinner | Generally not required. For more details, see the 'Product Characteristics' section. |
| Cleaner | International GTA007 |
| Interruption of work | Do not leave paint in the hose, spray gun or spray equipment. Flush all equipment thoroughly with T-10 thinner. Mixed paint should not be resealed. If the work break is long, use freshly mixed paint when resuming. |
| Cleaning | Clean all equipment immediately after use with T-10 thinner. Flushing spray equipment periodically during application is also recommended. Cleaning frequency depends on spray volume, temperature and time, including all interruptions. Dispose of leftover paint and empty cans in accordance with local regulations. |
Product advantages: - excellent cathodic corrosion protection - high metallic zinc content - fast drying in low-temperature, high-humidity environments - suitable for conventional and airless spray - compatible with most high-performance coating systems. Air spray application: use a suitable pressure pot with mechanical stirring and dual air/liquid regulation. Use a professional spray gun with 04Z needle/nozzle, leather packing or equivalent
| sealing materials, a 50 ft fluid hose with a diameter of at least 1/2 in., | The air supply shall be at least 80 psi, and at least 25 CFM at the nozzle. Use suitable in-line air valves and oil/water separators to provide clean, dry air to the pressure pot and spray gun. |
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Before recoating, perform a solvent rub test in accordance with ASTM D4752. A rating of 4 indicates satisfactory cure for recoating.
Note: VOC values are typical and for guidance only. They may vary with colour and general 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.
The following topcoats are approved for use with Interdur 8807: Interdur 8814, Interdur 8840
| 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, consult International Paint.
| Packaging Specifications | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 13.52 L | 10 L | 20 L | 3.52 L | 20 L |
For other available packaging sizes, contact International Paint.
| Packaging Specifications | Component A | Component B |
| 20 L | 11.9 kg | 26.5 kg |
| Shelf life | Thereafter, the product shall be checked before use. Store in a dry, cool place away from heat sources and ignition sources. |
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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.
