AMINES, AROMATIC: METHOD 2002, Issue 2, dated 15 August 1994 - Page 6 of 6 TABLE 2. GENERAL INFORMATION. Substance
CAS
RTECS
OSHA
Exposure Limits (ppm) NIOSH ACGIH
Aniline
62-53-3
BW6650000
5 (skin)
lowest feasible (carcinogen)
2 (skin)
o-Toluidine
95-53-4
XU2975000
5 (skin)
lowest feasible (carcinogen; skin)
2 (skin) (carcinogen)
2,4-Xylidine
1300-73-8
ZE8575000
5 (skin)
99-97-8
XU5803000
121-69-7
BX4275000
N,N-Dimethyl- p-toluidine N,N-Dimethylaniline
5 (skin)
2 (skin)
0.5 (skin)
5 TWA; 10 STEL (skin)
5 TWA; 10 STEL (skin)
TABLE 3. SAMPLING FLOW RATES AND VOLUMES. SAMPLING Flow Rate Volume (L) (L/min) MIN MAX
Substance
Working Range (mg/m 3)
Aniline
0.02 - 0.2
5
30
5 - 60 (20-L samples)
o-Toluidine
0.02 - 1.0
10
150
5 - 60 (55-L samples)
2,4-Xylidine
0.02 - 0.2
3
20
3 - 75 (20-L samples)
N,N-Dimethyl- p-toluidine
0.02 - 1.0
9 - 30 (100-L samples)
N,N-Dimethylaniline
0.02 - 1.0
3
30
1.3 - 79 (38-L samples)
- Not determined.
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
