Page:NIOSH Manual of Analytical Methods - 2002.pdf/6

 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