sulfur dioxide
sulphur dioxide

For over 48 hours the white smoke from sulfur dioxide could be seen in the air.

It tends to turn back into sulfur dioxide and water again.

There are several ways of measuring sulfur dioxide in the air.

Released sulfur dioxide however makes the water a strong reducing agent.

Therefore, it is not a conclusive test for sulfur dioxide.

He said the restrictions on sulfur dioxide will be the most stringent in the nation.

In addition, sulfur dioxide cannot be added to organic wines.

Sulfur dioxide is a by-product of other processes in industry.

Such paper has maintained its strength for 300 to 800 years, despite sulfur dioxide and other air pollutants.

At that time, up to 48,000 pounds per hour of sulfur dioxide were released from this one stack.