Some foods are treated with sulfur dioxide as a preservative measure. It's not done as much as it once was, and for most people it doesn't appear to cause much of a problem... though a few people do seem to be allergic.
Sulfur dioxide is not in flour.
Pyrite is used for carpeting houses, growing food, bone density, manufacturing sulfur, sulfuric acid, sulfur dioxide, and inexpensive jewelry.
chromatography
Sulfur doxide can be removed with a caustic solution such as NaOH in water.
sulfur is poisonous as it is dangerous because sulfur is consists of chemicals able to kill once drank or injected in the body. Another answer: Sulfur in small quantities is not by itself poisonous. (see Related Questions for list of poisonous elements). Although sulfur dioxide is sufficiently safe to be used as a food additive in small amounts, at high concentrations it reacts with moisture to form sulfurous acid which in sufficient quantities may harm the lungs, eyes, or other tissues. In organisms without lungs such as insects or plants, it otherwise prevents respiration. Sulfur is the component of both Mustard Gas and Sulfuric Acid. Other input: If it's used in insecticides and pesticides, I wouldn't experiment with that question. ;)
One use of sulfur dioxide is as a food preservative (by killing bacteria).
Yes, sulfur dioxide (SO2) is often used as a preservative for its antimicrobial and antioxidant properties in fruits and wines.
Sulfur dioxide is not in flour.
Sulfur dioxide followed by its hydration is used in the production of sulfuric acid.
Pyrite is used for carpeting houses, growing food, bone density, manufacturing sulfur, sulfuric acid, sulfur dioxide, and inexpensive jewelry.
A compound that is used to preserve fruit and produce an inexpensive acid is sulfur. Sulfur dioxide is often used to preserve fruit.
Sulfur dioxide
chromatography
During Photosynthesis carbon dioxide is used and oxygen is released. In chemo-synthesis oxygen may be used but it releases Sulfur dioxide. Example of chemo-synthesis are sulfur bacteria.
Using sulfur soap is indeed safe, and it is commonly used for people with skin conditions known as "scabies." You can buy some sulfur soap online at Dermisil.com.
Lime
I is used to create sulfur dioxide to make paper.