NIOSHTIC-2 Publications Search

Formaldehyde molecular states in the gas phase.

Utterback-DF

Department of Environmental Health Sciences, School of Public Health, University of South Carolina, Columbia, South Carolina 1987 Jun; :1-3

00182753

The gas phase reaction of N,O-bis-(trimethylsilyl)trifluoroacetamide (BSTFA) with polar organics was validated. Quantitative yields were obtained for alcohols, glycols, glycol ethers and amines using the gas phase derivatization method. These values were then compared with the expected yields from vapor pressure tables. For the formation of methylene-glycol from the reaction of formaldehyde (50000) with water, equilibrium constants were estimated at temperatures ranging from 20 to 40 degrees-C. Gas streams of formaldehyde in air were produced by a gas phase monomeric formaldehyde generator based on acid catalyzed depolymerization of s- trioxane. The formaldehyde was subsequently reacted with water vapor in the air. The chromotropic-acid method was used to determine the concentration of formaldehyde equivalents and BSTFA derivatization method to determine the concentration of methylene- glycol. Temperature dependency of the equilibrium constant is graphed.

NIOSH-Grant; Grants-other; Molecular-structure; Chemical-analysis; Physical-properties

Environmental Health Sciences University of South Carolina School of Public Health Columbia, S C 29208

50-00-0

19870623

Final Grant Report

4948.00

Grant;

1987

PB89-131205

A01

Grant-Number-R03-OH-02377

OEP

Other Occupational Concerns; Grants-other

Department of Environmental Health Sciences, School of Public Health, University of South Carolina, Columbia, South Carolina

SC

University of South Carolina at Columbia, Columbia, South Carolina