What is Sulfur Dioxide CAS 7446-09-5?
Sulfur Dioxide (CAS 7446-09-5) is a colorless gas with a strong, pungent odor and high chemical reactivity. It dissolves readily in water to form sulfurous acid, making it an effective reducing agent in many industrial processes. As an essential raw material in chemical manufacturing, food preservation, and water treatment, sulfur dioxide plays a critical role across multiple industries. When stored and handled according to safety regulations, it provides reliable performance in large-scale industrial applications.
Sulfur Dioxide CAS 7446-09-5 Use
Chemical Industry
Sulfur dioxide is a key intermediate in chemical manufacturing and is widely used in:
Food & Beverage Processing
Used as a preservative and antioxidant in regulated applications such as dried fruits, wine, and juice processing (subject to strict legal limits).
Pulp & Paper Industry
Applied as a bleaching and reducing agent in pulp treatment and paper manufacturing.
Water Treatment
Used to remove excess chlorine and chloramine in industrial water systems.
Sulfur Dioxide CAS 7446-09-5 safety
Sulfur dioxide is a toxic and corrosive gas with strong respiratory irritation.
Safety considerations:
Inhalation can cause coughing, breathing difficulty, and lung irritation
Direct contact with eyes or skin may result in burns
Use only in areas with effective ventilation or gas control systems
Personal protective equipment such as respirators and chemical goggles is essential
Sulfur dioxide is not flammable, but it reacts with water and many chemicals, requiring careful handling and strict safety controls.
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