Interline 704 Epoxy Tank Lining Coating is an epoxy paint. Provides corrosion protection for steel storage tanks carrying various products such as crude oil, gasoline, MTBE, caustic solutions and selective aromatic and aliphatic solvents. A two-component, chemical-resistant epoxy lining coating. Although the low-molecular-weight reactive co-reactant becomes part of the film when cured under normal ambient conditions, analysis by EPA Method 24 has shown that it also affects the VOC value. Parameters on this page: dry film thickness 80–125 µm (3.2–5 mils), theoretical spreading rate 4.20 m²/L, number of components: two.
Data source: AKZONOBEL original Technical Data Sheet (TDS), "Interline 704 Epoxy Tank Lining Coating"; spreading rate and other values are converted from the TDS parameters, 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 | 53% |
|---|---|
| Dry Film Thickness | 80–125 µm (3.2–5 mils) |
| Theoretical Spreading Rate | 4.20 m²/L |
| VOC | 3.54 lb/gal (425 g/L) US EPA Method 24 333… |
| Density / Specific Gravity | 1.42 kg/L (11.8 lb/gal) |
| Number of Components | Two-component |
| Thinner | Do not exceed the thinning limits of local environmental regulations |
| Mixing Ratio | 3.5 parts : 1 part (by volume) |
| Colour / Appearance | Pink, white, grey, INTERLINE 704 |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component, chemical-resistant epoxy lining coating.
Provides corrosion protection for steel storage tanks carrying various products such as crude oil, gasoline, MTBE, caustic solutions and selective aromatic and aliphatic solvents.
| Colour | Pink, white, grey, INTERLINE 704 |
|---|---|
| Gloss | Semi-gloss |
| Volume Solids | 53% |
| Typical thickness | Dry film thickness 80–125 µm (3.2–5 mils), equivalent to wet film thickness 151–236 µm (6–9.4 mils) |
| Theoretical Spreading Rate | At 125 µm dry film thickness and the stated volume solids, 4.20 m²/L; at 5 mil dry film thickness and the stated volume solids, 170 sq ft/US gal |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Suitable for airless spray, brush, roller. Drying time; recommended topcoat recoat interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 5°C (41°F) | 6 h | 24 h | 36 h | 35 days |
| 15°C (59°F) | 4.5 h | 15 h | 28 h | 26 days |
| 25°C (77°F) | 3 h | 8 h | 9 h | 21 days |
| 40°C (104°F) | 45 min | 5 h | 6 h | 10 days |
| Flash point (typical) | Component A 24 °C (75 °F); Component B 23 °C (73 °F); mixed 26 °C (79 °F) |
|---|---|
| Product weight | 1.42 kg/L (11.8 lb/gal) |
| Volatile Organic Compounds | 3.54 lb/gal (425 g/L) US EPA Method 24; 333 g/kg EU Solvent Emissions Directive content (EU Council Directive 2010/75/EU). Coating hazardous substances: GB 30981.2-S-Pb≤1000-NC compliant with GB 30981.2-2025. For more details, 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. Where necessary, remove weld spatter and grind welds and sharp edges smooth.
Oil and grease must be removed in accordance with the SSPC-SP1 solvent cleaning standard.
Abrasive blasting: the product may be applied only to surfaces blast-cleaned to Sa2½ (ISO 8501-1:2007) or SSPC SP10.
A peak-to-valley surface roughness of 50–100 µm (2–3.9 mils) is recommended.
Interline 704 must be applied before steel oxidation occurs. If oxidation occurs, the entire oxidized area should be re-blasted to the specified standard.
Surface defects exposed by blasting shall be abraded, filled or otherwise treated.
Before oxidation, use Interline 982 as a primer to 40 µm (1.5 mils) dry film thickness. Or use dehumidification to achieve the blasting standard.
Cracked, damaged and welded areas shall be prepared to the specified standard (for example: Sa2½ (ISO 8501-1:2007) or SSPC SP10, or power-tool cleaning to Pt3 (JSRA SPSS:1984) or SSPC SP11).
| Mixing | Interline 704 must be applied according to the detailed Interline 704 application procedure recommended by International Paint. |
|---|
This product is supplied in two containers forming one unit. Mix the two components in the specified ratio in one operation. Once mixed, use within the specified pot life.
(1) Stir the base (Component A) with a power mixer.
(2) Mix all of the curing agent (Component B) with the base (Component A) and stir thoroughly with a power mixer.
| Mixing ratio | 3.5 parts : 1 part (by volume) |
|---|
| Pot life | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 9 h | 7.5 h | 5 h | 2 h |
| Suitable for airless spray | Recommended nozzle tip size 0.53–0.68 mm (21–27 thou); total paint pressure at the nozzle not less than 211 kg/cm² (3000 psi) |
|---|---|
| Air Spray | Not recommended (with pressure pot) |
| Brush | Recommended — for small areas only | Typical thickness 50–75 µm (2.0–3.0 mils) |
| Roller application | Recommended — for small areas only | Typical thickness 50–75 µm (2.0–3.0 mils) |
| Thinner | International GTA220 | Do not exceed the thinning limits of local environmental regulations |
(or GTA415)
| Cleaner | International GTA822 (or GTA415) |
|---|---|
| Interruption of work | Do not leave paint in hoses, spray guns or spray equipment. Flush all equipment thoroughly with International thinner. Mixed paint should not be resealed; if work is interrupted for too long, mix a fresh batch for application. |
| 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 interruptions, and other factors. |
Surplus paint and empty containers must be disposed of in accordance with the relevant regional regulations.
Before use, refer to the detailed Interline 704 application procedure.
Interline 704 is generally specified as a 2-coat system, each coat 125 µm (5 mils) thick, with a total system dry film thickness of 250 µm (10 mils). The exact system for this total dry film thickness depends on the requirements of the final use. Consult International Paint for specific recommendations on tank lining application.
Apply by airless spray only. Other methods such as brush or roller may require more than one coat and are recommended only for small areas or touch-up.
When applying Interline 704 by brush or roller, multiple coats are necessary to achieve the specified total system dry film thickness.
Heavily pitted areas should be pre-coated by brush to ensure good surface wetting.
The temperature of the surface to be coated must be at least 3 °C (5 °F) above the dew point.
Below 5 °C (41 °F), the product will not cure adequately.
The relative humidity in the tank should not exceed 85%.
When applying Interline 704 in confined spaces, ensure adequate ventilation.
For multi-coat application, temperatures below 5 °C (41 °F) during or after application will cause incomplete curing and surface contamination, jeopardizing subsequent intercoat adhesion.
After the final coat has cured hard, use a suitable non-destructive magnetic thickness gauge to measure the dry film thickness of the coating system and verify the average total thickness of the applied coats. The coating shall be free of pinholes or other skips. The cured film must be free of sagging, running, dripping, inclusions or other defects. All defects shall be corrected. Repaired areas must be re-inspected and cured as specified before the final lining coat is put into service. For suitable repair procedures, refer to International Paint's Interline 704 application procedure.
The coating achieves ideal chemical resistance only after full cure. The degree of cure depends on temperature, humidity and film thickness. Generally, at 250 µm (10 mils) total dry film thickness, full cure and ideal chemical resistance are achieved in 7–10 days at 25 °C (77 °F) and 50% relative humidity. At higher temperatures, curing shortens proportionally; at lower temperatures, it lengthens.
This product is certified to the following specifications: • Food contact - FDA (US Food and Drug Administration) requirements: liquid and dry food • Food contact - grain loading (NOHA) • Tank coating - recognised corrosion protection coating (Lloyd's Register). Note: VOC values are typical values for guidance only. The values may vary depending on colour differences 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.
Interline 704 should only be overcoated with itself and should never be overcoated with other products.
Interline 982 can be used as a suitable temporary primer.
Consult International Paint to ensure Interline 704 is suitable for contact with the product to be stored.
| For further information on the industry standards, terms and abbreviations used in this datasheet, see www.international-pc.com | See the following documents on the website: • Definitions and Abbreviations • Surface Preparation • Paint Application • Theoretical and Practical Spreading Rates • Interline 704 Application Guide. These sections are 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 | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 20 L | 15.56 L | 20 L | 4.44 L | 5 L |
For other packaging sizes, contact AkzoNobel.
| Packaging Specifications | Component A | Component B |
| 20 L | 26 kg | 4.6 kg |
| Shelf life | At least 12 months at 25 °C (77 °F). |
|---|
Minimum 6 months at temperatures above 25 °C.
Thereafter, inspection is required. Store in a dry, cool environment away from heat and sources of ignition.
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All registered trademarks mentioned in this publication are licensed to or owned by AkzoNobel.
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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 Interline 704 Epoxy Tank Lining Coating 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 |
|---|---|---|
| THA700 | Pink | 20 L |
| THA704 | — | 20 L |
| THA701 | — | 20 L |
This model has a total of3item 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.
