1. Product Introduction & Main Application
Arnico’s D6, also known internationally as Residual Fuel Oil or Bunker C, is an extremely heavy, high-viscosity residual fuel used primarily in the large, slow-speed engines of massive ocean-going vessels. This fuel is based on vacuum distillation residue diluted with heavy cutter stocks and is the standard, economical option for the international commercial shipping industry.
2. Technical Specifications
| Technical Parameter | Standard Bunker Grade (RMG 380) | Max Viscosity Grade (RMK 700) | Unit |
|---|---|---|---|
| Viscosity at 50°C | ≤ 380 | ≤ 700 | cSt |
| Density at 15°C | ≤ 0.991 | ≤ 1.010 | kg/m³ |
| Total Sulfur | ≤ 3.5 (High S) / ≤ 0.5 (Low S) | ≤ 3.5 | % |
| Pour Point | ≤ +30 | ≤ +30 | °C |
| Flash Point | ≥ 60 | ≥ 60 | °C |
| Water & Sediment | ≤ 0.5 | ≤ 1.0 | % vol |
| Ash Content | ≤ 0.10 | ≤ 0.15 | % |
3. Features & Benefits
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The Most Economical Maritime Fuel: Minimizes cost per ton-mile for cargo transport.
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Compatibility with Large Two-Stroke Engines: Designed for combustion in the massive cylinders of main ship engines (e.g., MAN B&W and Wärtsilä).
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Low Sulfur Grade (LSFO): Compliance with the newer IMO 2020 regulations for reducing sulfur oxide emissions in Emission Control Areas (ECAs).
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Standard Viscosity Management: After heating to 120-130°C, it reaches the ideal injection viscosity (10-15 cSt).
4. Industrial Applications
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Oceanic Commercial Shipping: The primary fuel for large container ships, oil tankers, and bulk carriers.
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Coastal Power Plants: Fuel for large boilers in some regions.
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Thermal Desalination Plants: Supplying thermal energy for multi-stage flash (MSF/MED) distillation processes.
5. Safety & Handling
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MSDS (Material Safety Data Sheet): This material is almost solid at room temperature. Its vapors contain H₂S and are lethal. The Arnico MSDS must be studied with extreme care.
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Storage Conditions: Store in heated, recirculating tanks at a minimum temperature of 50°C. Water entry (even rainwater) must be violently prevented.
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Personal Protective Equipment (PPE): When sampling and inspecting tanks, the use of a Self-Contained Breathing Apparatus (SCBA) and full chemical protective clothing is mandatory.
6. Quality Assurance & COA
Arnico D6 shipments are provided with a Certificate of Quality (COQ) in accordance with the ISO 8217 standard.
