Are Office Chairs Toxic?

Office chairs may have a 'toxic' situation, mainly referring to the over-standard of harmful substances such as formaldehyde. These 'toxic chairs' are usually made of inferior materials, and long-term exposure can cause various health hazards to the human body.

Sources of Harmful Substances

1. Formaldehyde: The core material of non-solid wood office chairs is artificial boards. The urea-formaldehyde resin adhesive used in their production continuously decomposes and releases free formaldehyde under changes in temperature and humidity. Formaldehyde is a colorless gas with a strong pungent odor and is one of the main sources of indoor air pollution.
2. Volatile Organic Compounds (VOCs): The wood paint or baking paint coatings on the surface of chairs contain volatile organic compounds such as benzene, toluene, and xylene to enhance gloss and adhesion. Some inferior paints also contain urushiol, which can cause strong corrosion and sensitization when in direct contact with the skin.

Ways and Consequences of Harming Human Health

1. Respiratory System Irritation: Formaldehyde and benzene compounds enter the human body through respiration, irritating the eyes, nasal cavity, and respiratory mucosa, causing symptoms such as eye pain, tearing, frequent sneezing, coughing, and a foreign body sensation in the throat. Long-term exposure to low concentrations of formaldehyde can lead to chronic conjunctivitis, chronic rhinitis, or pharyngitis. People with a history of asthma may experience induced or aggravated asthma attacks, and in severe cases, high-concentration inhalation can cause pulmonary edema and endanger life.
2. Skin Allergic Reactions: Formaldehyde is highly allergenic, and direct skin contact with chair surfaces or armrests containing formaldehyde may cause contact dermatitis, resulting in local redness, papules, and severe itching. Sensitive children and the elderly may develop rashes all over the body. Urushiol in inferior paints can cause skin corrosion and severe poisoning reactions.
3. Increased Risk of Cancer: The metabolic products of formaldehyde in the human body can attack cell DNA and cause gene mutations. Long-term exposure to furniture with excessive formaldehyde levels significantly increases the risk of developing nasopharyngeal cancer and leukemia.