Calcium hydrogen sulfite

International Numbering System (INS) for Food Additives: 227

Food additives Europe numbers: E227 

Calcium hydrogen sulfite, also known as calcium bisulfite (Ca(HSO3)2), has some limited applications in medicine and food processing. Here's a breakdown:

In Medicine (Antiseptic and Disinfectant):

• Limited Use: Calcium hydrogen sulfite has some niche applications as a topical antiseptic or disinfectant. It works by releasing sulfur dioxide, which can kill bacteria and fungi.
• Not Common: This use is not very common in modern medicine due to the availability of safer and more effective topical antiseptics and disinfectants.

Safety Considerations:

• Irritating: Due to its sulfur dioxide content, calcium hydrogen sulfite can be irritating to the skin and mucous membranes.

In Food Processing (Preservative):

• More Common Use: Calcium hydrogen sulfite is more commonly used as a food preservative in some countries, particularly to prevent browning in fruits and vegetables during processing or storage.
• Regulation: The amount allowed in food is regulated by safety agencies like the US Food and Drug Administration (FDA).

Safety Considerations:

• Sulfite Sensitivity: Some people have a sensitivity to sulfites, which can cause allergic reactions like hives, wheezing, or stomach cramps.
• Regulations Limit Amounts: Food regulations are in place to minimize the risk of adverse reactions from sulfites in food.