NAME: Direct Brown 31
IMIS: D146
CAS: 2429-81-4
NIOSH: RTECS DG6241000; 17017
Exposure Limits
Health Factors
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA:
Glass Fiber Filter (37 mm)
MAX V:
180 Liters MAX F:
1.0 L/min
ANL 1:
High Performance Liquid Chromatography; HPLC/U.
REF:
2 (OSHA In-House File)
CLASS:
Not Validated
COND:
Extraction solvent = 43% methanol/57% water, PIC A; C18; Solvent
program, Initial = 40% methanol 60% water, PIC A, curve 10 for
12 min, Final = 75% methanol 25% water, PIC A; 1 mL/min; UV =
546, 436; DL 10 ng/inj; 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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