TABLE 1.

Master mix compounds and their properties relevant to headspace sampler analysis¹³

Compound	Boiling point (°C)	Volatile or semivolatile	Vapor pressure at 25°C (mm Hg)	Carcinogenicity level
Phenol	182	Volatile	3.50E – 01	Group 3
2,4,6-Trichlorophenol (2,4,6-TCP)	246	Volatile	8.00E – 03	Group 2B
Pentachlorophenol (PCP)	310	Semivolatile	1.1E – 04	Group 2B
Di-butyl phthalate (DBP)	340	Semivolatile	2.00E – 05	Group 3
Benzyl butyl phthalate (BBP)	370	Semivolatile	8.25E – 06	Group 3
Di-ethylhexyl phthalate (DEHP)	384	Semivolatile	1/42E – 07	Group 2B
Naphthalene (NA)	218	Volatile	08.5E – 02	Group 2B
Phenanthrene (PA)	340	Semivolatile	1.21E – 04	Group 3
Pyrene (PY)	404	Semivolatile	4.5E – 06	Group 3
Benzo[a] pyrene (BaP)	495	Semivolatile	5.49E – 09	Group 1

Note: The International Agency for Research on Cancer classifies substances to show whether they are suspected to cause cancer or not. It places the substances into four categories depending on the strength of evidence for their carcinogenicity. The categories are as follows: group 1—carcinogenic to humans, group 2A—probably carcinogenic to humans, group 2B—possibly carcinogenic to humans, and group 3—not classifiable as to its carcinogenicity to humans.¹⁴