IRSST - Institut de recherche Robert-Sauvé en santé et en sécurité du travail

Maleic anhydride (IFV)  

French name in the regulation: Anhydride maléique (IFV)
CAS : 108-31-6

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)
ppm mg/m3 f/cc Notes
TWAEV - 0,01 - IFV
STEV - - - -
Ceiling - - - -
Carcinogenicity Sensitizer R,D
Simple asphyxiantPercutaneous
Prohibited useProhibited recirculation
Minimum exposureExplosion hazard
Ototoxic

TWA adjustment for unusual work schedules

IV : Daily or weekly adjustment ( the more stringent of the two)

CNESST – Toxicological Index Service

Consult REPTOX file: Maleic anhydride(IFV)

Analysis:

Anhydride maléique

Recommended method by the IRSST:
Method: OSHA - 86
Sampling device: Glass fiber filters impregnated with veratrylamine.
Parameters:
Flow rate: 0,5 L/min
TWA sampling volume: 60 L
STEL sampling volume: -
Remarks: The samples must be stored in the refrigerator until analysis. Contact the IRSST before sampling.
Principle: High performance liquid chromatography with UV detection (HPLC-UV)
Remarks: Isocyanates, hydrochloric acid and aldehydes can cause interference during sampling.
OSHA Analytical Methods Manual. Method 86. Maleic Anhydride. Salt Lake City, 1990.