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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)
- OSHA PEL and ACGIH TLV are 5 ppm (skin) for all the above compounds.
1 ppm = 4.42 mg/m 3 @ NTP for the cresols; 1 ppm = 3.85 mg/m 3 @ NTP for phenol.
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
