CRC Prime It Anti-Corrosive Primer for Steel 400ml
Available
CRC Prime It (CRC product number 2091) is a single pack shop primer with a red-oxide finish and high levels of anti-corrosive zinc complexes, formulated for the protection of structural steel and iron. It is a 400ml aerosol.
CRC says it can be applied over bare or lightly rusted steel. It does not need to be overcoated straight away: CRC states up to 3 years outdoors before overcoating or recoating is necessary, depending on conditions. The aerosol is classified extremely flammable and may damage fertility or the unborn child (H360); the hazard details are below.
Where this product is used
- Protection of structural steel and iron
- Priming bare or lightly rusted steel surfaces
- Overcoating with itself, CRC Prep It, CRC Zinc It, CRC Bright Zinc, CRC Copper + Zinc, CRC Coloured Zinc Coatings or most standard decorative paint systems for metals
Features
- Zinc enriched for corrosion protection, with high levels of anti-corrosive zinc complexes (CRC)
- Up to 3 years outdoors before overcoating or recoating is necessary, depending on conditions (CRC data sheet)
- Scratch resistant and durable (CRC data sheet)
- Red-oxide finish; lead and cadmium free (CRC data sheet)
- Compatible with most standard decorative paint systems for metals (CRC)
- Ready to use aerosol, no additional mixing or chemical additives required (CRC)
Key specifications
| Specification | Detail |
|---|---|
| Product type | Single pack shop primer with a red-oxide finish and anti-corrosive zinc complexes, for structural steel and iron |
| CRC product number | 2091 |
| Pack | Aerosol 400 ml |
| Colour | Red-oxide (data sheet) |
| Flash point | Below 23°C (SDS) |
| Temperature range | Up to 120°C (data sheet) |
| Touch dry and full cure | Touch dry 30 minutes; full cure overnight (data sheet) |
| Time to overcoat | 1-8 hours without sanding; overnight if sanding is required (data sheet) |
| Coverage (data sheet) | Theoretical coverage up to 2 m2 per aerosol can |
| Re-application | Indoors not required; outdoors up to 3 years, depending on conditions (data sheet) |
| Approval stated by CRC | MPI Approved C23 (printed on the CRC data sheet; not on the CRC page) |
| Hazard classification (SDS) | Signal word DANGER. Aerosols Flammable Category 1; skin irritation Category 2; toxic to reproduction Category 1A. H222, H229, H315, H336, H360, H373 |
| Dangerous goods (SDS) | UN 1950, AEROSOLS, Class 2.1 |
| Source | CRC Industries (Aust) technical data sheet version 07/2022 and safety data sheet 03/04/25 (revision 2.5) |
Selecting the right option
CRC says to pre-prime aluminium, stainless steel, brass, copper or galvanised metal with CRC Etch It Etch Primer for White & Yellow Metals 2110 - 400ml before applying Prime It. For a high build, easy-sanding coat over Prime It, see CRC Prep It Anti-Corrosive High Build Easy Metal Primer 2114 - 400ml.
Using it
CRC's surface preparation: remove signs of corrosion with a wire brush or emery paper or similar. If rust cannot be removed, treat the surface with CRC Rust Converter after thoroughly abrading rusty areas with a wire brush. Clean the surface with CRC Brakleen or similar degreaser if required. Where possible, abrade the surface with disc grinding, wire brush or sandpaper.
CRC's directions: shake the can until the agitator ball is moving freely, then for at least 1 further minute. Apply with smooth even strokes to a clean, dry surface, holding the can approximately 25 cm from the surface until the desired coverage is achieved.
When finished spraying, clean the valve by turning the can upside down and pressing the button until only pressure escapes. Clean up with mineral turpentine or spraying thinner.
Storage and handling
Do not puncture, incinerate or store above 50°C. Store in a cool, dry, well ventilated area, away from heat or ignition sources (data sheet and safety data sheet).
Limits and safety
Classified as hazardous under Safe Work Australia criteria. Signal word Danger. H222: extremely flammable aerosol. H229: pressurised container, may burst if heated. H315: causes skin irritation. H336: may cause drowsiness or dizziness. H360: may damage fertility or the unborn child. H373: may cause damage to organs through prolonged or repeated exposure. UN 1950, AEROSOLS, Class 2.1; flash point below 23°C. Not classified as an environmental hazard. CRC's data sheet says exposure to high temperatures may cause the can to burst and that aerosol cans will conduct electricity. CRC says protection in extreme conditions may require re-application more frequently. Read the safety data sheet before use.
Frequently asked questions
Can CRC Prime It be applied over rust?
CRC says it can be applied over bare or lightly rusted steel. If rust cannot be removed, treat the surface with CRC Rust Converter after abrading with a wire brush.
How long before I need to overcoat or recoat CRC Prime It?
CRC states up to 3 years outdoors before overcoating or recoating is necessary, depending on conditions. Time to overcoat is 1-8 hours without sanding.
Can I use CRC Prime It on aluminium or galvanised metal?
CRC says to pre-prime aluminium, stainless steel, brass, copper or galvanised metal with CRC Etch It first.
What is the coverage of CRC Prime It?
CRC's data sheet gives theoretical coverage of up to 2 m2 per aerosol can.
Is CRC Prime It lead free?
CRC's data sheet states lead and cadmium free.
Is CRC Prime It a flammable aerosol?
Yes. The safety data sheet (03/04/25, revision 2.5) classifies it Aerosols - Flammable Category 1, H222, signal word Danger, with H360 (may damage fertility or the unborn child). UN 1950 Class 2.1, flash point below 23°C.
Related products
See also: CRC Etch It Etch Primer for White & Yellow Metals 2110 - 400ml, CRC Prep It Anti-Corrosive High Build Easy Metal Primer 2114 - 400ml, CRC Aerosol Zinc It Galvanic Rust Protection 350g, CRC Rust Converter.
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