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CISDOC database

Document ID (ISN)100566
CIS number 02-1780
ISSN - Serial title 1047-322X - Applied Occupational and Environmental Hygiene
Year 2002
Convention or series no.
Author(s) Jarand C.W., Akapo S.O., Swenson L.J., Kelman B.J.
Title Diisocyanate emission from a paint product: A preliminary analysis
Bibliographic information July 2002, Vol.17, No.7, p.491-494. Illus. 14 ref.
Abstract The purpose of this study was to evaluate emission of 2,4-toluene diisocyanate (2,4-TDI), 2,6-toluene diisocyanate (2,6-TDI), and isophorone diisocyanate (IPDI) from a commercially available two-stage concrete coating. A laboratory model of an outdoor deck coating process was developed and isocyanate concentrations determined by reaction with 1-(2-methoxyphenol)- piperazine and subsequent high performance liquid chromatographic analysis with UV detection. The detection limit for 2,4-TDI and 2,6-TDI urea derivatives was 0.6µg TDI/g wet product, and 0.54µg IPDI/g wet product for the IPDI urea derivative. No 2,4-TDI or IPDI was detected in the mixed product. The 2,6-TDI emission rates per gram of wet product applied per hour after one hour, five hours and 15-hours were 0.32µg, 0.38µg and 0.02µg respectively. These emission rates should allow industrial hygienists to calculate exposures to isocyanates emitted from coating products.
Descriptors (primary) polyurethanes; isocyanates; construction industry; sealants; volatile substances
Descriptors (secondary) allergens; irritants; isophorone diisocyanate; high-pressure liquid chromatography; 2,4-tolylene diisocyanate; exposure evaluation; 2,6-tolylene diisocyanate
Document type D - Periodical articles
Country / State or ProvinceUSA
Subject(s) Toxic and dangerous substances
Broad subject area(s) Chemical safety
Browse category(ies) Construction industry and civil engineering
Isocyanates
Cyano compounds