NAME: o-Tolidine Based Dyes
IMIS: T169
CAS: 119-93-7
Exposure Limits
Health Factors
NTP:
Suspect Human Carcinogen
IARC:
Group 2B, possibly carcinogenic to humans (3,3'-Dimethylbenzidine)
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA:
Polytetrafluoroethylene Filter 5 micron
MAX V:
500 Liters MAX F:
2.0 L/min
ANL 1:
High Performance Liquid Chromatography; HPLC/UL51.
REF:
1 (NIOSH 5013)
CLASS:
Partially Validated
COND:
Column:
Mobile Phase:
Detector Wavelength:
Detection Limit:
WIPE:
Yes, with Glass Fiber Filter.
BULK METHOD:
Protect samples from heat and light. This method does not
differentiate between different o-Toliding based dyes. For any
dye analysis, a bulk sample of the dye must be sent to the SLCAL.
Limit the amount of bulk submitted to one gram or one mL.
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