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
