READY FOR LIFT
MAZUT
MAZUT M100
Global fuel suppliers:Mazut M-100 (manufactured to GOST 10585-75, 99, or 2013 standards) is a heavy, dark residual fuel oil. Highly valued for its high energy density and steam-generating capacity, it is primarily used in large industrial boilers, power plants, and marine propulsion.
ORIGIN
Mazut M-100 is almost exclusively produced in the Russian Federation, Kazakhstan, Azerbaijan, and Turkmenistan, and is heavily utilized as an equivalent to Number 6 Fuel Oil (Bunker C). In Western markets, it typically requires further blending or cracking to produce lighter distillates like diesel.
PRODUCT DESCRIPTION
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Key Specifications (GOST 10585)
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The exact composition and physical properties vary slightly depending on the sulfur grade, but standard parameters for Mazut M-100 include:
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Viscosity (at 50°C): Max 118° Engler
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Pour Point: Max 25°C to 42°C
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Flash Point: Min 110°C (in an open cup)
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Moisture Content: Max 0.5% to 1.0%
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Sulfur Content: Ranges from 0.5% (Low Sulfur), to 1.0% (Regular), and up to 2.5% to 3.5% (High Sulfur) depending on the source feedstock.
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Ash Content: Max 0.05% to 0.14%
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Net Calorific Value: Min 9,700 kcal/kg
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KEY CHARACTERISTICS
Mazut is a heavy, dark-brown residual fuel oil obtained from the deep distillation of crude oil. It is a highly viscous, high-energy fuel source used primarily in heavy industry, marine transport, and regional power generation across Eastern Europe and Central Asia.
Physical & Chemical Properties
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High Density: Ranges tightly between 0.890 and 1.010 g/cm³ at 20°C.
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Extreme Viscosity: Measures up to 118 mm²/s at 50°C, requiring constant pre-heating to pump or burn.
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High Calorific Value: Delivers immense energy output, averaging 39,000 to 41,500 kJ/kg.
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High Flash Point: Exceeds 90°C to 110°C, making it exceptionally safe against accidental ignition.
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High Sulfur Content: Contains 0.5% to 3.5% sulfur, classifying it as a heavy pollutant.
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High Pour Point: Solidifies at ambient temperatures, ranging from 10°C up to 25°C.
Standard Grading (GOST 10585-99)
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Mazut M-40: Medium-grade fuel blended with diesel fractions to lower the freezing point.
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Mazut M-100: Heavy-grade residual oil containing minimal light distillates, requiring intensive pre-heating.
Key Industrial Uses
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Steam Boilers: Generates thermal energy in large industrial manufacturing facilities.
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Power Stations: Drives heavy electric generation plants in remote or historic grids.
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Marine Bunkering: Acts as a low-cost fuel for massive cargo vessels and naval fleets.
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Specifications and Standards
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The GOST 10585 standard mandates rigorous requirements for Mazut M100 regarding viscosity, impurities, and sulfur content:
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Core Technical Specifications
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Kinematic Viscosity (at 50°C): Max 118 mm²/s
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Flash Point (Closed Cup): Not less than 110°C
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Pour Point: Max 25°C
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Ash Content: Max 0.14%
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Water Content: Max 0.5%
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Mechanical Impurities: Max 0.1%
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Sulfur Classifications
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The most defining metric for grading Mazut M100 is its sulfur content, which dictates the market value and environmental acceptability. Under GOST standards, it is graded into several categories: [1, 2]
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Very Low Sulfur: Max 0.5%
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Low Sulfur: 0.5% – 1.0%
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Normal Sulfur: 1.0% – 2.0%
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High Sulfur: 2.0% – 3.5%
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Primary Applications
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Power Plants: Fuels massive utility boilers to generate electricity.
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Industrial Boilers: Powers steam generation in factories, paper mills, and chemical plants.
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District Heating: Heats large residential complexes and cities via centralized thermal networks.
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Marine Fuel: Powers large vessels equipped with low-speed steam turbine or diesel engines.
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Asphalt Production: Acts as a raw material blending component for road-paving bitumen.
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Critical Operational Requirements
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Preheating Needed: Must be heated to 90°C–130°C to reduce viscosity enough for pumping and atomization.
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Storage Needs: Requires specialized heated storage tanks to prevent the fuel from solidifying.
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Emissions Equipment: Demands robust exhaust scrubbing due to sulfur and ash content.
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Mazut M100 GOST 10585 is a highly viscous, heavy residual fuel oil that sits at the bottom of the petroleum refining spectrum. Compared to other fuels, it is cheaper, more energy-dense per volume, and far more demanding to handle, often requiring specialized preheating infrastructure.
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Because it is a "dirty oil" distillation remnant, it differs significantly from lighter distillates and even some Western heavy fuel oils in terms of its crude source, sulfur profile, and global trade standards.
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Mazut Fuel Oil for Sale | Global Mazut Fuel Brokerage & Supply Services
Mazut Fuel Oil Available for Qualified Commercial Buyers
Nationwide Brokerage Group Inc. provides professional brokerage services for the procurement of Mazut Fuel Oil by connecting qualified commercial buyers with verified suppliers for domestic and international fuel transactions.
Our brokerage team assists buyers with supplier procedures, commercial documentation, transaction coordination, and communication throughout the procurement process.
Whether your company requires Mazut M100, Mazut 100 GOST, or other heavy fuel oil grades for power generation, marine operations, industrial heating, or export, we help facilitate structured commercial transactions with qualified suppliers.
What is Mazut Fuel Oil?
Mazut is a heavy residual fuel oil produced during the refining of crude oil. It is widely used as an industrial fuel for power plants, marine vessels, boilers, furnaces, and large manufacturing facilities.
Mazut is commonly traded under various specifications, including:
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Mazut M100
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Mazut 100 GOST 10585-2013
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Mazut 40
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Heavy Fuel Oil (HFO)
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Residual Fuel Oil (RFO)
Mazut is recognized for its high energy content and is widely used in industrial and commercial energy applications worldwide.
Applications of Mazut Fuel Oil
Mazut is commonly used in:
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Power Generation Plants
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Marine Shipping & Bunkering
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Industrial Boilers
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Cement Plants
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Steel Mills
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Manufacturing Facilities
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Petrochemical Plants
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District Heating Systems
Benefits of Mazut Fuel Oil
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High energy output
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Reliable industrial fuel
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Cost-effective for large-scale operations
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Suitable for power generation
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Marine bunker applications
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Industrial heating systems
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Global commercial availability
Typical Mazut Specifications
Specifications vary by supplier and product grade but commonly include:
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Product Grade: Mazut M100
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Standard: GOST 10585-2013 (where applicable)
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Density
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Sulfur Content
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Flash Point
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Pour Point
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Ash Content
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Water Content
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Viscosity
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Calorific Value
Final specifications are confirmed through the supplier's Certificate of Analysis (COA) and independent inspection reports where applicable.
Available Transaction Terms
Depending on supplier availability, transactions may include:
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FOB (Free on Board)
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CIF (Cost, Insurance & Freight)
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Tank-to-Tank (TTT)
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Tank-to-Vessel (TTV)
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Spot Contracts
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Long-Term Supply Agreements
Supplier procedures vary according to transaction structure and delivery location.
Major Fuel Trading Locations
Subject to supplier availability:-
Rotterdam
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Houston
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Fujairah
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Jurong / Singapore
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Black Sea Ports
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Baltic Sea Ports
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Other Approved International Terminals
Industries We Serve
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Power Generation Companies
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Marine Shipping Companies
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Industrial Manufacturers
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Cement Plants
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Steel Producers
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Refineries
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Commodity Trading Companies
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Government Energy Projects
Our Mazut Brokerage Process
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Buyer submits a Letter of Intent (LOI) or ICPO.
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Buyer qualification and due diligence are completed.
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Supplier issues commercial documentation.
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Contract terms are negotiated and finalized.
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Independent inspection is completed where required.
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Payment and delivery proceed according to the agreed contract.
Why Choose Nationwide Brokerage Group Inc.?
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Professional fuel brokerage services
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International supplier network
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Commercial transaction coordination
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Buyer qualification support
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Documentation assistance
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Global petroleum trading experience
Frequently Asked Questions
What is Mazut M100?
Mazut M100 is a heavy residual fuel oil commonly used in industrial boilers, power plants, marine vessels, and manufacturing facilities. It is one of the most widely traded heavy fuel oil grades.
Who purchases Mazut?
Typical buyers include:
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Power plants
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Marine bunker suppliers
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Industrial manufacturers
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Refineries
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Energy companies
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Commodity traders
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Government agencies
What documents are required?
Typical transaction documentation may include:
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Letter of Intent (LOI)
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Irrevocable Corporate Purchase Order (ICPO)
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Company Registration Documents
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Authorized Representative Identification
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Proof of Financial Capability (when required)
Is product quality independently verified?
Many suppliers provide a Certificate of Analysis (COA), and independent inspections may be conducted through mutually agreed inspection companies according to the contract terms.
How do I request Mazut pricing?
Contact Nationwide Brokerage Group Inc. with your required product grade, quantity, destination port, preferred delivery terms, and company information. Our brokerage team will review your request and provide the applicable supplier procedures.
Request a Mazut Fuel Oil Quote
Nationwide Brokerage Group Inc. assists qualified commercial buyers seeking Mazut M100 and heavy fuel oil for industrial, marine, and energy applications.
Contact our brokerage team today to discuss your procurement requirements and available transaction opportunities.
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