Chromium VI, water soluble inorganic compounds

French name in the regulation: Chrome VI, composés inorganiques hydro-solubles

Exposure Standards in RROHS regulation

Permissible exposure values (PEV)

	ppm	mg/m³	f/cc	Notes
TWAEV	-	0,005	-	-
STEV	-	-	-	-
Ceiling	-	-	-	-

Carcinogenicity	C1	Sensitizer	R,D
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: Chromium VI, water soluble inorganic compounds

Analysis:

Chrome VI hydrosolubles

Method: IRSST - 365

Sampling protocol

Sampling device:
Sampling media required:

#IRSST	Description
976	25mm quartz filter in a conical cassette

Parameters:
Flow rate: 1.5 L/min
TWA sampling volume: 360 L
STEL sampling volume: -

Principle: Ion chromatography with visible detection (IC-VIS)
Precision (%): 1,0
Minimum reported value: 0,04 µg
Remarks: The analytical results are expressed as total water-soluble chromium VI. Surface tests for chromates can be carried out, and the required equipment (kit #2625) is available at the IRSST. Extraction delay of 8 days for welding fumes and 10 days for the other processes following the sampling date. Ship all samples by rapid courier within a period not exceeding 24 hours after sampling. Any substance that produces a response on the detector at 540 nm and that has a retention time similar to Cr VI is a potential interference.

Reference

IRSST. Détermination des composés inorganiques du chrome hexavalent hydrosolubles et hydroinsolubles dans l'air des lieux de travail, Méthodes analytiques, méthode 365, Montréal, IRSST, 2009, 17 pages.

Chrome VI hydrosolubles dans aérosols acides

Method: IRSST - 365

Sampling protocol

Sampling device:
Sampling media required:

#IRSST	Description
977	25mm coated quartz filter in a conical cassette

Parameters:
Flow rate: 1.5-4 L/min
TWA sampling volume: 360 L
STEL sampling volume: -
Remarks: For chrome VI in acid aerosol.

Analytical protocol

Principle: Ion chromatography with visible detection (IC-VIS)
Precision (%): 1,5
Minimum reported value: 0,04 µg
Remarks: The analytical results are expressed as total water-soluble chromium VI. Surface tests for chromates can be carried out, and the required equipment (kit #2625) is available at the IRSST. The coated sampling cassette 977 is stable one month. Extraction delay of 14 days following the sampling date. Ship all samples by rapid courier within a period not exceeding 24 hours after sampling.

Reference

IRSST. Détermination des composés inorganiques du chrome hexavalent hydrosolubles et hydroinsolubles dans l'air des lieux de travail, Méthodes analytiques, méthode 365, Montréal, IRSST, 2009, 17 pages.