Page:NIOSH Manual of Analytical Methods - 1403.pdf/5

 ALC OH OLS IV: MET HO D 140 3, Issue 3, dated 15 M arch 200 3 - Page 5 o f 5

TABLE 1.

Exposure Limits and Physical Properties

Compound

OSHA (p pm )

NIOSH (ppm )

ACG IH (ppm )

mg/m 3 = 1ppm @ NTP

MW

BP (°C)

Den sity @ 20°C (g/mL)

VP @ 20°C , KPa (mm Hg)

2-m eth oxyeth anol

25 (skin)

0.1 (skin)

5 (skin)

3.16

76.09

124

0.966

0.8 (6)

2-ethoxyethanol

200 (skin)

0.5 (skin)

5 (skin)

3.75

90.12

135

0.931

0.5 (4)

2-butox yeth anol

50 (skin)

5 (skin)

25 (skin)

4.91

118.17

171

0.902

0.11 (0.8)

TABLE 2. Method Evaluation Analytical Methodb

Overall Methoda Compound

Range

Accuracy

Breakthrough

Bias

@ 3

(m g/m )

2-methoxyethanol 2-ethoxyethanol 2-butoxyethanol

a) b) c) d) e)

Precision Sr T

2 x OSHA PEL

Range studied

LOD

( : g/sample)

( : g/sample)

Ave. DE

Storage Stability Measurement Precision Sr

Levels

Recovery

( : g/sample)

(% )

44-160

0.41

128 Lc

NSe

0.072

2-387

0.8

97.8

0.024

120.5

103.7

340-1460

0.11

> 10 Ld

NS

0.056

2-373

0.7

100.2

0.022

118.0

101.7

0.14

c

NS

0.071

3-361

1.3

99.9

0.024

90.0

82

124-490

> 44 L

Generated air sample data in References 7 and 8. Data for analytical method in Reference 10. Tes ting done in dry air. Te stin g done in 90% rela tive hum idity. NS = not significant

NIOSH Manual of Analytical Methods, Fourth Edition