China is the top country by SF6 gas emissions in the world. As of 2010, SF6 gas emissions in China was 57,054 thousand metric tons of CO2 equivalent that accounts for 35.11 % of the world's SF6 gas emissions. The top 5 countries (others are the United States of America, Russian Federation, Republic of Korea, and India) account for 73.75 % of it. The world's total SF6 gas emissions was estimated at 162,482 thousand metric tons of CO2 equivalent in 2010.
Sulfur hexafluoride is used largely to insulate high-voltage electric power equipment.