p-Phenylenediamine

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.

p-Phenylenediamine

French name in the regulation: Phénylènediamine (para-)

CAS : 106-50-3

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)

	ppm	mg/m³	f/cc	Notes
TWAEV	-	0,1	-	-
STEV	-	-	-	-
Ceiling	-	-	-	-

Carcinogenicity	Sensitizer	S
Simple asphyxiant	Percutaneous
Prohibited use	Prohibited recirculation
Minimum exposure	Explosion hazard
Ototoxic

TWA adjustment for unusual work schedules

III : Weekly adjustment

CNESST – Toxicological Index Service

Consult REPTOX file: p-Phenylenediamine

Analysis:

p-Phénylènediamine

Recommended method by the IRSST:

Method: OSHA - 87

Sampling protocol

Sampling device: Two SKC FLT225-7 glass fiber filters impregnated with sulfuric acid.
Parameters:
Flow rate: 1 L/min
TWA sampling volume: 100 L
STEL sampling volume: -
Remarks: 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.

Analytical protocol

Principle: High performance liquid chromatography with UV detection (HPLC-UV)

Reference

OSHA Analytical Methods Method 87.: m-,o- and p-Phenylenediamine. Salt Lake City: OSHA, 1991.