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The CAS number relevant to PC is 94113‐91‐4, and it contains little metal impurities, and the VM is low so that there is no report specific to the environmental impacts and safety of PC.

In the publication in 2010 based on the report of the PreSIEF, PC is exempted by European Chemical Agency (ECHA) from registration in REACH.

Table 6.1.3.6 Physical properties of pitch coke.

		Proximate analysis
		Real	Volatiles	Fixed
							Elemental analysis	Metal analysis
		density	matter	carbon	Moisture	Ash	C	H	N	S	O	FE	Si	V	Mn
Production process	Type	(−)	(%)	(%)	(%)	(%)	(wt%)	(wt%)	(wt%)	(wt%)	(wt%)	(wt%)	(wt%)	ppm	(wt%)	References
Chamber	Amorphous		0.35	99.36		0.29				0.33		0.05	0.04	3		[20]
		1.974	0.31	99.43	0.13	0.13	98.31	0.45	0.62	0.3	0.28	0.0217	0.019	0.3	1.58	[21]
Delayed		2.014–2.068	0.29	99.55	0.09	0.07				0.22				1		[22]
		2.014	0.29	99.55	0.09	0.07	98.68	0.34	0.62	0.22	0.12	0.012	0.0098	0.12	0.99	[21]
	Needle	2.1				0.1				0.3						[23]
		2.107				0.09				0.25						[23]
		2.116				0.13				0.27						[23]
		2.13–2.14				0.02–0.05				0.3–0.4						[23]
		2.11				0.09				0.3						[24]
		2.13			0.1	<0.1			0.5	0.25						[25]