Standard for exposure to tetrahydrofuran; Respirators may be worn only if…

Filnamn: Standard for exposure to tetrahydrofuran; Respirators may be worn only if engineering and administrative controls are not feasible.

OSHA interpretation letter responding to a senator's inquiry about tetrahydrofuran exposure at a Navy rope-coating contractor. It states that the OSHA permissible exposure limit for tetrahydrofuran is 200 ppm as an 8-hour time-weighted average under 29 CFR 1910.1000 Table Z-1, and that respirators may be used only where feasible engineering or administrative controls are not fully effective.