1,1,2,2-Tetrachloro-1,2-difluoroethane
1,1,2,2-Tetrachloro-1,2-difluoroethane Shift Exposure & PPE Compliance Calculator
Input your measured workplace air sample concentration and work shift schedule. The engine applies the Brief & Scala mathematical reduction model to determine legally defensible compliance.
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Generates an instant 1-page OSHA 29 CFR 1910.1000 compliance record.
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NIOSH Respirator & Barrier Protection Specifications
Certified for concentrations within permissible limits.
Prevents transdermal permeation.
Mandatory NIOSH-approved Acid Gas (Yellow/White) required when airborne concentration exceeds action level under OSHA 29 CFR 1910.134.
Frequently Asked Questions About 1,1,2,2-Tetrachloro-1,2-difluoroethane Exposure
What is the legal OSHA PEL for 1,1,2,2-Tetrachloro-1,2-difluoroethane?
Under OSHA 29 CFR 1910.1000 Table Z-1, the 8-hour Time-Weighted Average (TWA) Permissible Exposure Limit (PEL) for 1,1,2,2-Tetrachloro-1,2-difluoroethane (CAS 76-12-0) is 500 ppm. In addition, NIOSH recommends a Recommended Exposure Limit (REL) of 500 ppm.
How do extended 10-hour and 12-hour shifts affect 1,1,2,2-Tetrachloro-1,2-difluoroethane exposure limits?
Because OSHA PELs are formulated for 8-hour workdays, working 10-hour or 12-hour shifts reduces recovery time. Applying the standard Brief & Scala mathematical model reduces the allowable concentration by a Reduction Factor (RF = 0.700 for 10-hr, RF = 0.500 for 12-hr). For 1,1,2,2-Tetrachloro-1,2-difluoroethane, an 8-hr PEL of 500 ppm adjusts to half that value on a 12-hour shift.
What respirator and PPE is required when handling 1,1,2,2-Tetrachloro-1,2-difluoroethane?
When atmospheric concentrations exceed the permissible limit up to 10× PEL, OSHA 29 CFR 1910.134 mandates a half-mask elastomeric respirator equipped with Acid Gas (Yellow/White). For dermal exposure, Nitrile or Neoprene Chemical Barrier are recommended.
What is the IDLH threshold for 1,1,2,2-Tetrachloro-1,2-difluoroethane?
The Immediately Dangerous to Life or Health (IDLH) concentration established by NIOSH for 1,1,2,2-Tetrachloro-1,2-difluoroethane is 5000 ppm. Any entry into atmospheres at or above this concentration requires positive-pressure supplied air or Self-Contained Breathing Apparatus (SCBA).
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