Formaldehyde Levels Based on Bulk and Elevated Temperature Evolution Rate Measurements of Silicone Materials

Autor:	Daniel Howard Filsinger
Rok vydání:	1995
Předmět:	chemistry.chemical_compound Thermogravimetric analysis Silicone chemistry Bulk polymerization Chemical engineering Phase (matter) Public Health Environmental and Occupational Health Formaldehyde Organic chemistry Degradation (geology) Formaldehyde formation FORMALDEHYDE EXPOSURE
Zdroj:	American Industrial Hygiene Association Journal. 56:1201-1207
ISSN:	0002-8894
DOI:	10.1080/15428119591016223
Popis:	The Hazard Communication section of the Occupational Safety and Health Administration regulation on formaldehyde exposure requires certain package label language requirements depending on the bulk phase and worker exposure formaldehyde levels. A hydrazine-polarographic electrochemical test was employed to determine the formaldehyde concentration of silicone materials to below the part-per-million range without interference from other aldehydes. Many silicone products have high-temperature applications, and when heated in air these materials may result in formaldehyde formation in addition to the bulk phase concentration. A method was devised to measure this degradation product using a modified thermogravimetric analyzer in conjunction with the hydrazine-polarographic technique. Elevated temperature formaldehyde evolution rate data and their possible impact on the workplace exposure level are presented for several silicone materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c5e93a384a2d7e3b8b57bda4a5a8daf7 https://doi.org/10.1080/15428119591016223 Zobrazit plný text záznamu