Page:NIOSH Manual of Analytical Methods - 5517.pdf/5

 POLYCHLOROBENZENES: METHOD 5517, Issue 2, dated 15 August 1994 - Page 5 of 5 TABLE 1. PROPERTIES.

Name 1,2,4-Trichlorobenzene 1,2,4,5-Tetrachlorobenzene Pentachlorobenzene a b

Melting Point (°C)

Boiling Point (°C)

16.95

213.5

0.291

139.5-140.5

243-246

<0.1

86

277

Density @ 20 °C (g/mL)

mg/m 3 per ppm @ NTP

0.039

1.454

7.42

<0.0133

1.858 a

8.83

1.834 b

10.23

Vapor Pressure @ 25 °C (mm Hg) (kPa)

Solid @ 22 °C. Solid @ 6.5 °C.

TABLE 2. ACCURACY

Range Studied a (mg/m 3)

Analytical Precision Sr

Bias (%)

Overall Precision ˆ rT S

Accuracy (±%)

(1) 1,2,4-Trichlorobenzene

0.002 to 100

0.044

-4.3

0.093

19.3

(2) 1,2,4,5-Tetrachlorobenzene

0.003 to 31

0.042

1.4

0.097

19.5

(3) Pentachlorobenzene

0.008 to 22

0.057

-3.2

0.098

19.6

Name

a

10-L samples.

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