NAME: Direct Black 38
IMIS: 1012
CAS: 1937-37-7
NIOSH: RTECS QJ6160000; 50640
Exposure Limits
Health Factors
NTP:
Suspect Human Carcinogen
IARC:
Benzidine Based Dyes - Group 2A, probably carcinogenic to humans
(Technical-Grade)
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA:
Glass Fiber Filter (37 mm) without a backup pad
MAX V:
100 Liters MAX F:
1.0 L/min
ANL 1:
High Performance Liquid Chromatography; HPLC/UV/VIS
REF:
2 (OSHA In-House File)
CLASS:
Partially Validated
NOTE:
Ship with dry ice. Protect samples from light and heat.
COND:
Special solvent extraction; u Bondapak C18; 20% B - curve 8 -
30 min to 80% B, A = 0.25 g Na2HPO4, 600 mL water, 400 mL methanol
1.7 g of TBAP, B = 0.25 g Na2HPO4, 250 mL H20, 750 mL methanol,
1.7 g TBAP; 1 mL/min; UV 546, 436; DL = 1.1 ug/sample; C/P DBA
WIPE:
Yes, with Glass Fiber Filter.
BULK METHOD:
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 approx.
one mL.
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