Short-term exposure limit (STEL). The employer shall assure that no employee is exposed to an airborne concentration of benzene in excess of five (5) ppm as ...

1. Airborne: The maximum time-weighted average (TWA) exposure limit is 1 part of benzene vapor per million parts of air (1 ppm) for an 8-hour workday and the ...

NIOSH REL: 0.1 ppm TWA, 1 ppm STEL; NIOSH considers benzene to be a potential occupational carcinogen as defined by the OSHA carcinogen policy [29 CFR 1990].

A review of the data cited by OSHA in its final standard for exposure to benzene provides no clear scientific basis for a short-term-exposure limit (STEL).

Airborne: The maximum time-weighted average (TWA) exposure limit is 1 part of benzene vapor per million parts of air (1 ppm) for an 8-hour workday and the ...

The short- term exposure limit is 5 ppm (based on a 15-minute sample). States with their own occupational health and safety agencies are required to meet or ...

(2) Short Term Exposure Limit (STEL). The employer shall assure that no employee is exposed to a concentration of airborne benzene in excess of five (5) ppm as ...

Benzene exposure shall not exceed 1.0 part per million (ppm) unless respiratory protection is used in accordance with the Respiratory Protection Policy. B. An ...

OSHA PEL ; Specific Gravity. 0.88 ; Flash Point. 12°F ; Upper Explosive Limit. 7.8% ; Lower Explosive Limit. 1.2%.