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Failure Report No. S344.

Authors
Anonymous
Source
NIOSH 1977 Aug:4 pages
Link
NIOSHTIC No.
00107267
Abstract
Test results using the NIOSH analytical method S344 for 2,4-toluene- diisocyanate (584849) are reported. The method involves collection of samples in a midget impinger containing N-4-nitrobenzyl-N-n- propyl amine (Nitro reagent) in toluene, removal of toluene by evaporation, mixing of the residue with methylene-chloride (75092), and analysis by liquid chromatography with an ultraviolet detector. Chromatographic operating conditions are provided. Results from synthesis and elution tests are discussed. The method was unsatisfactory due to oxidation of the Nitro reagent after sample collection, deterioration of the chromatographic column caused by excess Nitro reagent, and unsuitability of toluene as the collection medium.
Keywords
Cyanates; Isocyanates; Sampling; Impingers; Amines; Irradiation;
CAS No.
584-84-9; 75-09-2;
Publication Date
19770805
Fiscal Year
1977
NTIS Accession No.
PB81-229007
NTIS Price
A01
Source Name
NIOSH, Unpublished, Cincinnati, Ohio, 4 pages, 5 references
State
OH;
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