Butylated hydroxytoluene (BHT) is a chemical compound widely used in various industrial, commercial, and consumer applications. A primary function of BHT in foods is to act as a preservative, preventing spoilage and extending shelf life. It is also utilized in food packaging materials.
What is BHT? A Closer Look
BHT belongs to the family of substituted phenols. Beyond its use in the food industry, BHT can be found in an array of consumer products, including:
- Cosmetics
- Fabrics and textiles
- Plastics and rubber
- Lubricants and fuels
- Paints and coatings
- Non-prescription drugs
- Adhesives and sealants
- Natural health products
People are exposed to BHT through various pathways, including drinking water, food and food packaging, and the use of consumer products like paints, lubricants, cosmetics, plastics, rubber, and automotive products.
Alt text: Chemical structure of Butylated Hydroxytoluene (BHT), a common food preservative.
The Safety of BHT: What You Need to Know
Health organizations closely monitor and manage the potential risks associated with chemical substances like BHT. Draft chemical risk assessments are conducted to evaluate the safety of these substances.
Preliminary assessments have suggested that BHT is not harmful to human health at current exposure levels. However, some studies indicate that BHT could pose a risk to the environment, highlighting the importance of ongoing evaluation and monitoring.
Regulations and Monitoring of BHT in Food
The use of BHT as a food additive is strictly regulated through lists of permitted preservatives. These regulations specify the maximum allowable levels of BHT in foods, whether added directly or indirectly through food packaging. Manufacturers, importers, and sellers must adhere to these guidelines to ensure food safety.
What You Can Do to Minimize Exposure
If you are concerned about BHT and its potential environmental impact, there are steps you can take to reduce your exposure:
- Read Labels Carefully: Pay attention to the ingredients listed on food and product labels.
- Follow Safety Instructions: Adhere to all safety warnings and directions provided on product packaging.
- Choose Regulated Products: Opt for over-the-counter products with a Drug Identification Number (DIN) or Natural Product Number (NPN), indicating regulation under the Food and Drugs Act.
- Dispose of Products Safely: Follow the manufacturer’s instructions for proper disposal of products containing BHT.
Alt text: A variety of cosmetic and personal care products on a shelf, highlighting BHT as a potential ingredient.
BHT Exposure in the Workplace
If you work in an environment where you are exposed to BHT, it’s crucial to discuss relevant laws, safe handling and storage practices, and requirements under occupational health and safety (OHS) legislation with your employer and OHS official. Resources such as the Workplace Hazardous Materials Information System (WHMIS) provide valuable information on handling hazardous materials safely.
Staying Informed
The assessment of BHT is an ongoing process. Health organizations continuously track new information, solicit public comments, and review data to inform final assessments. By staying informed and taking proactive steps, you can make informed decisions about your exposure to BHT and its potential impacts. BHT’s primary role as a preservative makes it a common ingredient, and understanding its presence allows for more conscious consumption.
