Table 3.

Chemical composition of gas phase products from pyrolysis of electronic components where a – casing, b- electronic peripherals, c- PCB.

Compound	Molec. formula	CAS #	% available	Category	Health risk assessment (IRIS)
					RfD (mg/kg-day)	RfC (mg/m3)	Carcinogenicity
Aromatics
Phenol	C5H5OH	108–95-2		a, c	3 × 10−1	N/A	♣
Benzene	C6H6	71–43-2	19–71	a, c	4 × 10−3	3 × 10−2	♠
Styrene	C8H8	100–42-5	5–46	a, b	2 × 10−1	1	§
Toluene	C7H8	108–88-3	21–72	a, b, c	8 × 10−2	5	♣
Benzene, 1.3 dimethyl	C8H10	108–38-3	25–44	a, b	N/A	N/A	**
Ethylbenzene	C8H10	100–41-4	8–51	a	1 × 10−1	1	§
α-Methylstyrene	C9H10	98–83-9	29–58	a, b	5 × 10−2	N/A	§
P-cresol	C7H8O	106–44-5	6–11	c	N/A	N/A	♣
p-Xylene	C8H10	106–42-3	6–9	b	2 × 10−1	1 × 10−1	♣
o-Xylene	C8H10	95–47-6	5–9	b	2 × 10−1	1 × 10−1	♣
Acetophenone	C8H11O	98–86-2	25–60	a, b	N/A	N/A	*
Butanedioic acid, phenyl	C10H10O4	635–51-8	0–−20	a, b	N/A	N/A	*
Oxazole	C3H3NO	288–42-6	0–57	c	N/A	N/A	*
phosphonic acid,	C6H7O4P	33795–18-5	12–19	c	N/A	N/A	*
Benzaldehyde	C7H6O	100–52-7	10–73	a	1 × 10−1	N/A	☼
Benzeneacetamide	C8H9NO	103–81-1	0–66	a	N/A	N/A	*
2-Vinylfuran	C6H6O	1487–18-9	0–28	a	N/A	N/A	♠
Benzofuran, 2-methyl	C9H8O	4265–25-2	36–43	c	N/A	N/A	*
Aliphatic hydrocarbons
1-Hexene, 3,5 dimethyl	C8H16	7423–69-0	12–47	b	N/A	N/A	*
Chloroundecane	C11H23Cl	2473–03-2	0–13	b	N/A	N/A	*
2-Propenenitrile	C3H3N	107–13-1	0–95	b	N/A	N/A	☼
butane, 1-chloro-3, 3-dimethyl	C6H13Cl	2855–08-5	0–13	b	N/A	N/A	*
2-Propenal, 3-phenyl	C9H8O	104–55-2	0–21	b	N/A	N/A	*
1,3,5,7cycloctatetraene	C8H8	629–20-9	25–29	a, b, c	N/A	N/A	*
Bromine containing compounds
Phenol, 2-bromo	C6H5BrO	95–56-7	41–46	a, c	N/A	N/A	☼
Phenol, 3-bromo	C8H9BrO	591–20-8	13–24	a, c	N/A	N/A	☼
Benzene,bromo	C6H5Br	108–86-1	0–98	c	N/A	N/A	*
Isopropenyl bromide	C3H5Br	557–93-7	0–29	c	N/A	N/A	*
1-Propane, 1 bromo	C3H7Br	106–94-5	0–49	c	N/A	N/A	☼
Bromoacetone	C3H5BrO	598–31-2	0–96	c	N/A	N/A	☼
Benzyl bromide	C7H7Br	100–39-0	0–22	a	N/A	N/A	☼
Pantane, 2 = bromo-2-methyl	C6H13Br	4283–80-1	8–12	c	N/A	N/A	*

^♠=possibly human carcinogen, IRIS

^§=possibly human carcinogen, IARC

^♣=exposure can cause organ damage, CDC

^☼=may be harmful if exposed (TOXNET)

^*=no adequate information