Isothiazolone emissions from building products

Adding biocides to dispersion products is a well‐known practice to control microbial deterioration. Isothiazolones are among the most commonly used preservatives, in particular a mixture of 2‐methyl‐2H‐isothiazol‐3‐one (MIT) and 5‐chloro‐2‐methyl‐2H‐isothiazol‐3‐one (CIT). In recent years, for healt...

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Veröffentlicht in:Indoor air 2015-02, Vol.25 (1), p.68-78
Hauptverfasser: Nagorka, R., Gleue, C., Scheller, C., Moriske, H.-J., Straff, W.
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container_end_page 78
container_issue 1
container_start_page 68
container_title Indoor air
container_volume 25
creator Nagorka, R.
Gleue, C.
Scheller, C.
Moriske, H.-J.
Straff, W.
description Adding biocides to dispersion products is a well‐known practice to control microbial deterioration. Isothiazolones are among the most commonly used preservatives, in particular a mixture of 2‐methyl‐2H‐isothiazol‐3‐one (MIT) and 5‐chloro‐2‐methyl‐2H‐isothiazol‐3‐one (CIT). In recent years, for health reasons, due to its strong sensitizing effect, CIT has been replaced by 1,2‐benzisothiazol‐3‐one (BIT). Furthermore, numerous products are now available for interiors containing the fungicidal active substance 2‐octyl‐2H‐isothiazol‐3‐one (OIT). So far nearly nothing is known of the emission behavior of BIT and OIT. An analytical method was developed for these two isothiazolones and interior products containing BIT respectively OIT have been investigated in an emission chamber and in test rooms. The chamber tests revealed maximum concentrations of 6.7 μg OIT/m3, 1.9 μg BIT/m3, and 187 μg MIT/m3. Concentrations obtained in the test rooms were at levels up to 1.4 μg OIT/m3 and 29 μg MIT/m3. A noticeable finding was the very slight subsidence of OIT and BIT levels over several weeks. While MIT outgassed quickly, OIT in particular showed low concentrations, but prolonged evaporation.
doi_str_mv 10.1111/ina.12126
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subjects Adhesives - analysis
Air Pollutants - analysis
Air Pollution, Indoor - analysis
Allergens
Biocides
Building materials
Building products
Chromatography, Liquid
Construction Materials - analysis
Disinfectants - analysis
Emissions
Environmental Monitoring - methods
Fungicides, Industrial - analysis
Germany
Household Products - analysis
Humans
Indoor air quality
Indoor spaces
Isothiazolones
Paint - analysis
Pesticides
Thiazoles - analysis
title Isothiazolone emissions from building products
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