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November 22, 2024

According to Decree 280-2024 published on February 28, 2024, in the Gazette officielle du Québec, the amendment to the Appendix 1 of the Regulation respecting occupational health and safety (RSST, RLRQ, c. S-2.1, r. 13) will come into force on March 14, 2024. These regulatory changes have not yet been incorporated into the current Substance Data Sheets of the Sampling Guide for Air Contaminants in the Workplace. An update is currently underway and will be available as soon as possible. Consequently, the information contained in the data sheets of substances modified or added in Decree 280-2024 is partially inaccurate or incomplete. Please consult our infoLABO (in French only) for more details. Please contact our client service: [email protected] for further information.

2,6-Di-tert-butyl-p-cresol (IFV)  

French name in the regulation: Di-tert-butyl-2,6 para-crésol (IFV)
CAS : 128-37-0

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)
ppm mg/m3 f/cc Notes
TWAEV - 2 - IFV
STEV - - - -
Ceiling - - - -
Carcinogenicity Sensitizer
Simple asphyxiantPercutaneous
Prohibited useProhibited recirculation
Minimum exposureExplosion hazard
Ototoxic

TWA adjustment for unusual work schedules

1C : No adjustment

CNESST – Toxicological Index Service

Consult REPTOX file: 2,6-Di-tert-butyl-p-cresol(IFV)

Analysis:

Di-tert-butyl-2,6 para-crésol

Recommended method by the IRSST:
Method: OSHA - PV2108

Sampling protocol

Sampling device: OVS-7 tube with XAD-7 and glass fiber filter
Parameters:
Flow rate: 1 L/min
TWA sampling volume: 100 L
STEL sampling volume: -
Remarks: The recommanded method for Di-tert-butyl-2,6 para-crésol is suitable for both vapor and aerosol phases.The aerosol phase might be underestimated because the efficiency of the sampling device does not match inhalable fraction definition. For more information, please contact the IRSST. This substance is not analyzed by our laboratories. It might be possible that the analysis be performed by another laboratory. Please contact the IRSST before sampling.

Principle: Gas chromatography with flame ionization detection (GC-FID)

OSHA, Chemical Information Manual, PV2108: Di-tert-Butyl-p-Cresol, 1992.