Carbon dioxide is a colorless, odorless, and non-flammable gas. We offer compressed carbon dioxide and liquid carbon dioxide of purity 99.99%. It is used as an agent in cooling, chilling, and freezing applications, extinguishing fire, preventing canned food from being spoiled, and welding some metals. It is also used as a pressure gas in perfumes and insect-killer bottles. CO2 is an important component of photosynthesis. It is used in greenhouses as it increases productivity through improved plant growth.