Otmar Geiss , Carmen Del Cacho, Josefa Barrero-Moreno

  • European Commission, Joint Research Centre, Institute for Health and Consumer Protection, 21027 Ispra (Va), Italy

Received: February 20, 2013
Revised: May 27, 2013
Accepted: May 27, 2013
Download Citation: ||https://doi.org/10.4209/aaqr.2013.02.0051  

  • Download: PDF


Cite this article:
Geiss, O., Cacho, C.D. and Barrero-Moreno, J. (2014). Catalytic Air Freshening Diffusers Based on Isopropyl Alcohol - A Major Source of Acetone Indoors. Aerosol Air Qual. Res. 14: 177-184. https://doi.org/10.4209/aaqr.2013.02.0051


 

ABSTRACT


Air fresheners are used in indoor environments for perfuming the ambience and/or masking unpleasant smells. There are several types of air fresheners on the market including those belonging to the family of catalytic diffusers. The fuel of these devices is frequently 2-methylpropanol, which, while operating, is oxidised to acetone. The acetone emission of a catalytic diffuser was measured for two fragrances under controlled laboratory conditions as well as in a private household. Emission rates were 530 mg/h and 660 mg/h respectively. Acetone concentrations of approximately 700 µg/m3 were measured in a private household three hours after the diffuser was extinguished. Besides isopropyl alcohol, one of the two fragrances contained 2-methylpropanol as a fuel component, which is oxidised to 2-methylpropanal. The emission rate for 2-methylpropanal was 11 mg/h. Catalytic diffusers containing isopropyl alcohol as fuel were identified as being a major indoor source of acetone. Although not a legal requirement, the secondary formation of acetone should be included in product information along with a list of product constituents. As an alternative, a less easily oxidisable solvent could be used.


Keywords: Acetone; Catalytic diffuser; Air freshener; 2-Methylpropanal; IAQ


Don't forget to share this article 

 

Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

Latest coronavirus research from Aerosol and Air Quality Research

2018 Impact Factor: 2.735

5-Year Impact Factor: 2.827


SCImago Journal & Country Rank

Sign up to AAQR Newsletter

Sign up to receive latest research, letters to the editors, and review articles, delivered to your inbox every second week!