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Mazut-100 is a fuel oil that is manufactured to GOST specifications (GOST is the Russian system of standards). Mazut is almost exclusively manufactured in the Russia Federation, Kazakhstan, Azerbaijan, and Turkmenistan.This product is typically used for larger boilers in producing steam since the BTU (British Thermal Unit) content is high. The most important consideration (not the only consideration) when grading this fuel is the sulfur content, which can mostly be affected by the source feedstock. For shipment purposes, this product is considered a ”dirty oil” product, and because viscosity drastically affect whether it is able to be pumped, shipping has unique requirements. Mazut is much like Number 6 Oil, and is part of the products left over after gasoline and lighter components are evaporated from the crude oil.


Mazut M100

1. Ash content, not more % 0,14
2. Mass fraction of sulphur, not more % - low - sulphur - residual - oil0,5
3. Temperature of the flash, not less °C in the closed crucible
     In the open crucible °C110 min
4. The temperature of solidification, not higher °C25
5. Kinematics viscosity118 max
6. Water content0.5%
7. Mechanical impuritiesLower than 0.1%
8. AcidityLower than 5 mg KOH/100ml
9. Alkalinitynil
10. Gross Calorific Value Kcal/kg / KJ/kgMin9700/41300
11. Density at 20.0 deg, C kg/l0.8900-0.9200
12. Hydrogen Sulfide Content (H2S) pom0.5 max
13. Carbon ResiduaLower than 7 %
14. Vanadium (V) ppm23
15. Aluminum (Al) ppm5
16. Silicon (Si) ppm12
17. Nickel (Ni) ppm29
18. Aspartames m/m3.6%
19. Distillation @4 mm Hg
   Extracted to 760 mm Hg
   Initial Boiling Point deg. C216
      5% recovered deg, C259
      10% recovered deg, C310
      24% recovered deg, C358
      30% recovered deg, C445
      40% recovered deg, C502
      50% recovered deg, C534
      60% recovered deg, C538
      75% recovered deg, C545
      80% recovered deg, C-
      95% recovered deg, C 550
      Final Boiling point deg. C560
      Percent Recovered vol78%
      Residue vol22%
      Total Nitrogen m/m0.192%
20. Sodium (Na) ppm15


Very Low Sulphur

”Very Low Sulphur” is mazut with a sulphur content of 0.5%

Low Sulphur

”Low Sulphur” is a mazut with a sulphur content of 0.5-1.0%

Normal Sulphur

”Normal Sulphur” is a mazut with a sulphur content of 1.0-2.0%

High Sulphur

”High Sulphur” is a mazut with a sulphur content of 2.0-3.5%

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