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NIOSH dioxin registry site visit report of Rhone-Poulenc, Inc., Portland, Oregon, report no. IWS-117-14.

Authors
Fingerhut-M; Blade-LM; Marlow-DA
Source
NIOSH 1984 Jan; :1-17
Link
NIOSHTIC No.
00134160
Abstract
Worker exposures to 2,3,7,8-tetrachlorodibenzo-p-dioxin (1746016) were assessed at Rhone Poulenc, Incorporated (SIC-2869), Portland, Oregon in January 1982. The survey was conducted to evaluate the feasibility of including workers involved with the synthesis of 2,4,5-trichlorophenoxyacetic-acid (93765) (2,4,5-T) in the dioxin (828002) registry. Complete personnel records were kept for all workers beginning in 1960. Limited medical information was available. Processes in the production of 2,4,5-T, its isooctyl and isobutyl esters, the formulation and packaging of its esters, and the production of its triethylamine salt were assessed. Formulation included blending the completed acids and esters and mixing the solutions to the proper strengths. Synthesis, dilution, and addition of additives and filtering were part of the formulation operation for amines. The same equipment was used for processing 2,4,5-T and 2,4-dichlorophenoxyacetic-acid (94757). No pressure releases or blow outs occurred during processing. No industrial hygiene data on worker exposures to process materials was available. No analysis for dioxin contamination or process contamination was available. The authors conclude that potential exposures to 2,4,5-T or other products derived from 2,4,5-trichlorophenol (95954) exist among the workers. The cohort of workers should be included in the dioxin registry.
Keywords
NIOSH-Author; NIOSH-Survey; Field-study; Chemical-industry-workers; Industrial-exposures; Industrial-chemicals; Poisons; Safety-research; IWS-117-14; Region-10
CAS No.
1746-01-6; 93-76-5; 828-00-2; 94-75-7; 95-95-4
Publication Date
19840131
Document Type
Industry Wide; Field Studies
Fiscal Year
1984
NTIS Accession No.
PB84-240035
NTIS Price
A03
Identifying No.
IWS-117-14
NIOSH Division
DSHEFS
SIC Code
2869
Source Name
National Institute for Occupational Safety and Health
State
OR; OH
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