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CISDOC database

Document ID (ISN)51580
CIS number 89-558
ISSN - Serial title Gigiena truda i professional'nye zabolevanija
Year 1986
Convention or series no.
Author(s) Jarym-Agaeva N.T., Putilina O.N.
Title Photometric method of aniline and phenyl isocyanate determination in workplace air
Original title Fotometričeskij metod opredelenija anilina i fenilizocianata v vozduhe rabočej zony [in Russian]
Bibliographic information Oct. 1986, No.10, p.56-57. 2 ref.
Abstract Aniline and phenyl isocyanate are determined by rection with p-dimethylaminobenzaldehyde to give diphenylmethanediamine and diphenylmethane diisocyanate. Air samples are passed through absorber solutions containing the reagent. In 40% acetic acid, both aniline and phenyl isocyanate react; in 1% ammonia, only aniline reacts. The absorbance of the solutions at 430-450nm is measured and compared with the absorbance of standard solutions. Phenyl isocyanate concentration is calculated from the difference in absorbance between the acetic-acid and ammonia reaction media.
Descriptors (primary) phenyl isocyanate; photometry; determination in air; aniline
Descriptors (secondary) description of technique; toxic substances
Document type D - Periodical articles
Subject(s) Toxic and dangerous substances
Broad subject area(s) Chemical safety
Browse category(ies) Aromatic amines
Isocyanates
Cyano compounds