Page:NIOSH Manual of Analytical Methods - 1401.pdf/4

 ALCOHOLS II: METHOD 1401, Issue 2, dated 15 August 1994 - Page 4 of 4 [3]

NIOSH Manual of Analytical Methods, 2nd ed., V. 2., U.S. Department of Health, Education, and Welfare, Publ. (NIOSH) 77-157-B (1977).

METHOD REVISED BY: George Williamson, NIOSH/DPSE; S53, S62, S64 and S66 originally validated under NIOSH Contract 99-74-45.

TABLE 1. PROPERTIES

Compound

Formula

mg/m3 = 1 ppm @ NTP

M.W.

Density (g/mL)

BP (°C)

VP @ 20 °C, kPa (mm Hg)

n-Butyl alcohol

CH3CH2CH2CH2OH; C4H10O

3.03

74.12

0.810 @ 20°C

117

0.56 (4.2)

sec-Butyl alcohol

CH3CH(OH)CH2CH3; C4H10O

3.03

74.12

0.808 @ 20°C

99.5

1.7 (13)

Isobutyl alcohol

(CH3)2CHCH2OH; C4H10O

3.03

74.12

0.806 @ 15°C

n-Propyl alcohol

CH3CH2CH2OH; C 3H 8O

2.46

60.09

0.805 @ 20°C

108 1.2 (9) 97 2.0 (15)

TABLE 2. GENERAL INFORMATION Exposure Limits (ppm) COMPOUND

CAS#

RTECS#

OSHA

NIOSH

ACGIH

n-Butyl alcohol

71-36-3

EO1400000

100 TWA

C 50 (skin)

C 50 (skin)

sec-Butyl alcohol

78-92-2

EO1750000

150 TWA

100 TWA; 150 STEL

100 TWA

Isobutyl alcohol

78-83-1

NP9625000

100 TWA

50 TWA

50 TWA

n-Propyl alcohol

71-23-8

UH8225000

200 TWA

200 TWA; 250 STEL (skin)

200 TWA; 250 STEL (skin)

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94