Page:NIOSH Manual of Analytical Methods - 2546.pdf/4

 CRESOL (all isomers) and PHENOL: METHOD 2546, Issue 1, dated 15 August 1994 - Page 4 of 4 TABLE 1. PHYSICAL PROPERTIES [6].

Compound

BP (°C) MP (°C) Density @ 20 °C

Vapor Presssure 25 °C (Pa) (mm Hg)

NIOSH REL*

o-cresol

190.95

30.9

1.047 g/mL

33

0.25

2.3 ppm

m-cresol

202.2

12.0

1.034

20

0.15

2.3 ppm

p-cresol

201.9

35.3

1.034

15

0.11

2.3 ppm

phenol

182.0

41.0

1.071 (25 °C)

47

0.35

5 ppm; C 15.6 ppm/15 min (skin)

1 ppm = 4.42 mg/m 3 @ NTP for the cresols; 1 ppm = 3.85 mg/m 3 @ NTP for phenol.
 * OSHA PEL and ACGIH TLV are 5 ppm (skin) for all the above compounds.

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