Seacrestor AUS40 Solution
Available Packaging of SeaCrestor (40% Marine Urea Solution)
Bulk Packaging
19,500L Flexitank in 20 ft Container
19,500L flexitank supply is one containerised bulk option for moving SeaCrestor AUS40 marine urea solution, subject to route, handling, and vessel schedule requirements.20,000L to 26,000L ISO Tank
Another alternative for regular supply is a 20,000L to 26,000L ISO tank, depending on availability and delivery plan.Loose Packaging
1,000 L Intermediate Bulk Container (IBC) Tanks
1,000 L IBC tanks are recommended for shipyards for Marine SCR System commissioning and sea trial. This option is recommended for smaller vessels which do not consume as much 40% Urea Solution during operations within Emission Control Area (ECA).SeaCrestor – 40% Marine Urea Solution Technical Datasheet
| Parameters | Unit | Values |
| Urea | % (m/m) | 39 ~ 41 |
| Alkalinity as NH3 | % (m/m) | < 0.5 |
| Biuret | % (m/m) | < 0.8 |
| Aldehydes | mg/kg | < 100 |
| Insoluble matter | mg/kg | < 50 |
| Phosphate(PO4) | mg/kg | < 1 |
| Sodium | mg/kg | < 1 |
| Calcium | mg/kg | < 1 |
| Iron | mg/kg | < 1 |
| Magnesium | mg/kg | < 1 |
| Potassium | mg/kg | < 1 |
Related Pages
What Is Seacrestor AUS40?
Seacrestor AUS40 is a marine urea solution formulated to ISO 18611-1 specification — the international standard for marine diesel engine SCR reductants. At 40% urea concentration in high-purity deionised water, it delivers the ammonia required for selective catalytic reduction (SCR) of nitrogen oxides (NOx) in marine diesel exhaust.
Seacrestor AUS40 is supplied by MarineUrea.com in Singapore and distributed to vessels through global port networks.
AUS40 vs AUS32 — Why Marine Engines Need Higher Concentration
Road vehicle AdBlue® (AUS32) uses 32.5% urea. Marine SCR systems use AUS40 (40% urea) for a specific reason: marine engines operate at higher exhaust temperatures and require a higher ammonia dose rate to achieve IMO Tier III NOx reduction targets (80% reduction vs Tier II).
| Parameter | AUS32 (Road AdBlue®) | AUS40 (Seacrestor Marine) |
|---|---|---|
| Urea concentration | 32.5% | 40% |
| ISO standard | ISO 22241 | ISO 18611-1 |
| Application | Truck, bus, car SCR | Marine diesel engine SCR |
| NOx reduction target | Euro 6: 80% from Euro 5 | IMO Tier III: 80% from Tier II |
| Freezing point | −11°C | −11.5°C (approx) |
Critical: Never substitute AUS32 for AUS40 in a marine SCR system. The lower ammonia yield will cause NOx emissions to exceed MARPOL Annex VI limits, fail emissions testing, and potentially trigger port state control (PSC) deficiencies.
Seacrestor AUS40 Quality Specification
Urea Purity
≥ 40% w/w urea in deionised water. Tested by refractometry and titration per ISO 18611-1.
Water Quality
Deionised to ≤ 0.5 µS/cm conductivity. Trace metal contaminants controlled to ISO 18611-1 limits.
COA Provided
Certificate of Analysis issued with each batch. Available in digital format for PSC inspection documentation.
Shelf Life
12–18 months from manufacture date under correct storage (≤ 25°C, away from direct sunlight).
Supply and Delivery
Seacrestor AUS40 is available through MarineUrea.com in the following formats:
- 1,000L IBC totes — recommended for sea trials, commissioning, and small vessel top-up
- ISO tank (20,000–26,000L) — for regular bulk supply to vessels on scheduled routes
- Flexitank (19,500L) — containerised option for port delivery where ISO tanks are unavailable
Supply is coordinated through Singapore and our global port network — see our supply coverage for port availability.
MARPOL Annex VI Compliance
Under MARPOL Annex VI Regulation 13, vessels built after 2016 operating in NOx Emission Control Areas (NECAs) must meet IMO Tier III standards — requiring SCR or EGR systems. Seacrestor AUS40 is formulated specifically for Tier III SCR compliance. Supply documentation including COA and ISO 18611-1 conformity statements are available for port state control (PSC) inspections.
Related Pages
Request Seacrestor AUS40 Supply
Contact us for port availability, delivery lead times, and pricing for IBC, ISO tank, or flexitank supply.
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