The Pungent Odor of Office Chairs

The pungent odor of office chairs requires comprehensive handling from three aspects: source identification, removal methods, and safety assessment.

Sources of the Odor

1. Harmful Chemicals
   • Formaldehyde: Primarily derived from urea-formaldehyde resin adhesives used in artificial wood panels, it has a strong irritating odor and can be released over a period of 3-15 years.
   • Benzene Series Compounds: Originating from paints and coatings, they may have a floral or irritating odor and long-term exposure can lead to health issues.
   • TVOC (Total Volatile Organic Compounds): Comprising hundreds of chemical substances with a wide range of sources, they can cause immune system disorders.
2. Materials and Processes
   • New leather office chairs use adhesives and coatings that contain volatile organic compounds, which continue to volatilize during initial use.
3. Natural Volatiles
   • Natural components such as terpenes and esters in solid wood may release a woody fragrance (usually harmless and dissipates after ventilation).
   • Filled sponges may release amine compounds, producing a slight odor.

Removal Methods

1. Ventilation Treatment
   • Basic Strategy: Continuous and strong ventilation is the core method to accelerate the volatilization of harmful substances through air circulation. It is recommended to place new leather office chairs in a well-ventilated area for more than one week, and the odor will significantly diminish.
   • Long-term Management: Combine a strategy of “ventilation as the main approach, supplemented by physical adsorption and professional products,” which usually takes 3-6 months to reduce pollutant concentrations to safe levels.
2. Physical Adsorption
   • Activated Carbon: Place activated carbon packs near the chair to adsorb organic compounds in the air, and replace them regularly (e.g., every 1-2 weeks).
3. Natural Aids
   • Place natural materials such as orange peels and green tea leaves, or use specialized products like charcoal packs and deodorizers to assist in odor removal.

Safety Assessment

1. Beware of Falsified Test Reports
   • Merchants may tamper with test reports (e.g., in the case of Ms. He from Shenzhen, where the merchant changed “formaldehyde non-compliance” to “compliance”). Do not rely solely on merchant reports to assess safety.
2. Special Populations Should Exercise Caution
   • If symptoms such as dizziness or nausea occur, or if there are pregnant women or children in the household, it is advisable to commission a professional agency to test for formaldehyde, benzene series compounds, and other indicators before use.
3. Prioritize Environmentally Friendly Materials
   • When purchasing, pay attention to whether the product has passed national environmental certifications (such as China's Ten-Ring Certification) to reduce exposure to harmful substances.