NAME: o-Tolidine
SYNONYM(s):
3,3'Dimethylbenzidine
IMIS: 2450
CAS: 119-93-7
NIOSH: RTECS DD1225000; 14667
Exposure Limits
ACGIH TLV:
(Skin); Appendix A3 (Confirmed Animal Carcinogen with Unknown
Relevance to Humans)
NIOSH REL:
0.02 mg/m3 Ceiling (60 min); Potential carcinogen
Health Factors
NTP:
Suspect Human Carcinogen
IARC:
Group 2B, possibly carcinogenic to humans (3,3'-Dimethylbenzidine)
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA:
Coated Glass Fiber Filters (37 mm) in 3 piece cassette. Coating is Sulfuric Acid
MAX V:
100 Liters MAX F:
1.0 L/min
ANL 1:
Gas Chromatography; GC/ECD
REF:
2 (OSHA 71)
SAE:
0.13
CLASS:
Fully Validated
NOTE:
Within ten hours after sampling, transfer filter to glass vial containing 2 mL deionized water. Filters may be obtained by OSHA personnel from SLTC.
COND:
Zorbax C18; 60% methanol 40% water; 1 mL/min; UV Det: 280;
DL 0.01 ug/sample; C/P DB
WIPE:
Yes, with Glass Fiber Filter.
BULK METHOD:
Limit the amount of bulk submitted to one gram or one mL.
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