Mazut

Mazut is a heavy, low-quality fuel oil used in generating plants and similar applications. In the United States and Western Europe, mazut is blended or broken down, with the end product being diesel.

Mazut-100

Mazut-100 is a fuel oil that is manufactured to GOST specifications, for example, GOST 10585-99. Mazut is almost exclusively manufactured in Kazakhstan, Azerbaijan, and Turkmenistan. The most important factor when grading this fuel is the sulphur content.

Mazut 100-75 VLS and Mazut 100-99 Grade I

Mazut 100-75 VLS and Mazut 100-99 Grade I are actually the same product. GOST merged the old classifications of 75 and 99 into a new seven-grade classification system, all under 100-99. However, many still use the older 75 classification, particularly in China.

Grades by Sulphur Content

• Very Low Sulphur: Sulphur content of 0.5%
• Low Sulphur: Sulphur content of 0.5–1.0%
• Normal Sulphur: Sulphur content of 1.0–2.0%
• High Sulphur: Sulphur content of 2.0–3.5%