PCB congener list

This is a complete list of polychlorinated biphenyl congeners.
atoms on the benzene rings are denoted by numbers assigned to the carbon atoms.

PCB congener list

Explanation of PCB "descriptors"

Congener descriptors give a shorthand notation for geometry and substituent positions. The twelve congeners that display all four of the descriptors are referred to as being "dioxin-like", referring both to their toxicity and structural features which make them similar to 2,3,7,8-tetrachlorodibenzo-p-dioxin. Individual congeners are identified by the number and position of the chlorine atoms around the biphenyl rings.

CP0 / CP1

These 68 coplanar congeners fall into one of two groups. The first group of 20 congeners consists of those with chlorine substitution at none of the ortho positions on the biphenyl backbone and are referred to as CP0 or non-ortho congeners. The second group of 48 congeners includes those with chlorine substitution at only one of the ortho positions and are referred to as CP1 or mono-ortho congeners.

4CL

These 169 congeners have a total of four or more chlorine substituents, regardless of position.

PP

These 54 congeners have both para positions chlorinated.

2M

These 140 congeners have two or more of the meta positions chlorinated.

IUPAC Name	BZ Congener Number	CASNR	Descriptors
Biphenyl	0	92-52-4
2-Chlorobiphenyl	1	2051-60-7	CP1
3-Chlorobiphenyl	2	2051-61-8	CP0
4-Chlorobiphenyl	3	2051-62-9	CP0
2,2'-Dichlorobiphenyl	4	13029-08-8
2,3-Dichlorobiphenyl	5	16605-91-7	CP1
2,3'-Dichlorobiphenyl	6	25569-80-6	CP1
2,4-Dichlorobiphenyl	7	33284-50-3	CP1
2,4'-Dichlorobiphenyl	8	34883-43-7	CP1
2,5-Dichlorobiphenyl	9	34883-39-1	CP1
2,6-Dichlorobiphenyl	10	33146-45-1
3,3'-Dichlorobiphenyl	11	2050-67-1	CP0, 2M
3,4-Dichlorobiphenyl	12	2974-92-7	CP0
3,4'-Dichlorobiphenyl	13	2974-90-5	CP0
3,5-Dichlorobiphenyl	14	34883-41-5	CP0, 2M
4,4'-Dichlorobiphenyl	15	2050-68-2	CP0, PP
2,2',3-Trichlorobiphenyl	16	38444-78-9
2,2',4-Trichlorobiphenyl	17	37680-66-3
2,2',5-Trichlorobiphenyl	18	37680-65-2
2,2',6-Trichlorobiphenyl	19	38444-73-4
2,3,3'-Trichlorobiphenyl	20	38444-84-7	CP1, 2M
2,3,4-Trichlorobiphenyl	21	55702-46-0	CP1
2,3,4'-Trichlorobiphenyl	22	38444-85-8	CP1
2,3,5-Trichlorobiphenyl	23	55720-44-0	CP1, 2M
2,3,6-Trichlorobiphenyl	24	55702-45-9
2,3',4-Trichlorobiphenyl	25	55712-37-3	CP1
2,3',5-Trichlorobiphenyl	26	38444-81-4	CP1, 2M
2,3',6-Trichlorobiphenyl	27	38444-76-7
2,4,4'-Trichlorobiphenyl	28	7012-37-5	CP1, PP
2,4,5-Trichlorobiphenyl	29	15862-07-4	CP1
2,4,6-Trichlorobiphenyl	30	35693-92-6
2,4',5-Trichlorobiphenyl	31	16606-02-3	CP1
2,4',6-Trichlorobiphenyl	32	38444-77-8
2,3',4'-Trichlorobiphenyl	33	38444-86-9	CP1
2,3',5'-Trichlorobiphenyl	34	37680-68-5	CP1, 2M
3,3',4-Trichlorobiphenyl	35	37680-69-6	CP0, 2M
3,3',5-Trichlorobiphenyl	36	38444-87-0	CP0, 2M
3,4,4'-Trichlorobiphenyl	37	38444-90-5	CP0, PP
3,4,5-Trichlorobiphenyl	38	53555-66-1	CP0, 2M
3,4',5-Trichlorobiphenyl	39	38444-88-1	CP0, 2M
2,2',3,3'-Tetrachlorobiphenyl	40	38444-93-8	4CL, 2M
2,2',3,4-Tetrachlorobiphenyl	41	52663-59-9	4CL
2,2',3,4'-Tetrachlorobiphenyl	42	36559-22-5	4CL
2,2',3,5-Tetrachlorobiphenyl	43	70362-46-8	4CL, 2M
2,2',3,5'-Tetrachlorobiphenyl	44	41464-39-5	4CL, 2M
2,2',3,6-Tetrachlorobiphenyl	45	70362-45-7	4CL
2,2',3,6'-Tetrachlorobiphenyl	46	41464-47-5	4CL
2,2',4,4'-Tetrachlorobiphenyl	47	2437-79-8	4CL, PP
2,2',4,5-Tetrachlorobiphenyl	48	70362-47-9	4CL
2,2',4,5'-Tetrachlorobiphenyl	49	41464-40-8	4CL
2,2',4,6-Tetrachlorobiphenyl	50	62796-65-0	4CL
2,2',4,6'-Tetrachlorobiphenyl	51	68194-04-7	4CL
2,2',5,5'-Tetrachlorobiphenyl	52	35693-99-3	4CL, 2M
2,2',5,6'-Tetrachlorobiphenyl	53	41464-41-9	4CL
2,2',6,6'-Tetrachlorobiphenyl	54	15968-05-5	4CL
2,3,3',4-Tetrachlorobiphenyl	55	74338-24-2	CP1, 4CL, 2M
2,3,3',4'-Tetrachlorobiphenyl	56	41464-43-1	CP1, 4CL, 2M
2,3,3',5-Tetrachlorobiphenyl	57	70424-67-8	CP1, 4CL, 2M
2,3,3',5'-Tetrachlorobiphenyl	58	41464-49-7	CP1, 4CL, 2M
2,3,3',6-Tetrachlorobiphenyl	59	74472-33-6	4CL, 2M
2,3,4,4'-Tetrachlorobiphenyl	60	33025-41-1	CP1, 4CL, PP
2,3,4,5-Tetrachlorobiphenyl	61	33284-53-6	CP1, 4CL, 2M
2,3,4,6-Tetrachlorobiphenyl	62	54230-22-7	4CL
2,3,4',5-Tetrachlorobiphenyl	63	74472-34-7	CP1, 4CL, 2M
2,3,4',6-Tetrachlorobiphenyl	64	52663-58-8	4CL
2,3,5,6-Tetrachlorobiphenyl	65	33284-54-7	4CL, 2M
2,3',4,4'-Tetrachlorobiphenyl	66	32598-10-0	CP1, 4CL, PP
2,3',4,5-Tetrachlorobiphenyl	67	73575-53-8	CP1, 4CL, 2M
2,3',4,5'-Tetrachlorobiphenyl	68	73575-52-7	CP1, 4CL, 2M
2,3',4,6-Tetrachlorobiphenyl	69	60233-24-1	4CL
2,3',4',5-Tetrachlorobiphenyl	70	32598-11-1	CP1, 4CL, 2M
2,3',4',6-Tetrachlorobiphenyl	71	41464-46-4	4CL
2,3',5,5'-Tetrachlorobiphenyl	72	41464-42-0	CP1, 4CL, 2M
2,3',5',6-Tetrachlorobiphenyl	73	74338-23-1	4CL, 2M
2,4,4',5-Tetrachlorobiphenyl	74	32690-93-0	CP1, 4CL, PP
2,4,4',6-Tetrachlorobiphenyl	75	32598-12-2	4CL, PP
2,3',4',5'-Tetrachlorobiphenyl	76	70362-48-0	CP1, 4CL, 2M
3,3',4,4'-Tetrachlorobiphenyl	77	32598-13-3	CP0, 4CL, PP, 2M
3,3',4,5-Tetrachlorobiphenyl	78	70362-49-1	CP0, 4CL, 2M
3,3',4,5'-Tetrachlorobiphenyl	79	41464-48-6	CP0, 4CL, 2M
3,3',5,5'-Tetrachlorobiphenyl	80	33284-52-5	CP0, 4CL, 2M
3,4,4',5-Tetrachlorobiphenyl	81	70362-50-4	CP0, 4CL, PP, 2M
2,2',3,3',4-Pentachlorobiphenyl	82	52663-62-4	4CL, 2M
2,2',3,3',5-Pentachlorobiphenyl	83	60145-20-2	4CL, 2M
2,2',3,3',6-Pentachlorobiphenyl	84	52663-60-2	4CL, 2M
2,2',3,4,4'-Pentachlorobiphenyl	85	65510-45-4	4CL, PP
2,2',3,4,5-Pentachlorobiphenyl	86	55312-69-1	4CL, 2M
2,2',3,4,5'-Pentachlorobiphenyl	87	38380-02-8	4CL, 2M
2,2',3,4,6-Pentachlorobiphenyl	88	55215-17-3	4CL
2,2',3,4,6'-Pentachlorobiphenyl	89	73575-57-2	4CL
2,2',3,4',5-Pentachlorobiphenyl	90	68194-07-0	4CL, 2M
2,2',3,4',6-Pentachlorobiphenyl	91	68194-05-8	4CL
2,2',3,5,5'-Pentachlorobiphenyl	92	52663-61-3	4CL, 2M
2,2',3,5,6-Pentachlorobiphenyl	93	73575-56-1	4CL, 2M
2,2',3,5,6'-Pentachlorobiphenyl	94	73575-55-0	4CL, 2M
2,2',3,5',6-Pentachlorobiphenyl	95	38379-99-6	4CL, 2M
2,2',3,6,6'-Pentachlorobiphenyl	96	73575-54-9	4CL
2,2',3,4',5'-Pentachlorobiphenyl	97	41464-51-1	4CL, 2M
2,2',3,4',6'-Pentachlorobiphenyl	98	60233-25-2	4CL
2,2',4,4',5-Pentachlorobiphenyl	99	38380-01-7	4CL, PP
2,2',4,4',6-Pentachlorobiphenyl	100	39485-83-1	4CL, PP
2,2',4,5,5'-Pentachlorobiphenyl	101	37680-73-2	4CL, 2M
2,2',4,5,6'-Pentachlorobiphenyl	102	68194-06-9	4CL
2,2',4,5',6-Pentachlorobiphenyl	103	60145-21-3	4CL
2,2',4,6,6'-Pentachlorobiphenyl	104	56558-16-8	4CL
2,3,3',4,4'-Pentachlorobiphenyl	105	32598-14-4	CP1, 4CL, PP, 2M
2,3,3',4,5-Pentachlorobiphenyl	106	70424-69-0	CP1, 4CL, 2M
2,3,3',4',5-Pentachlorobiphenyl	107	70424-68-9	CP1, 4CL, 2M
2,3,3',4,5'-Pentachlorobiphenyl	108	70362-41-3	CP1, 4CL, 2M
2,3,3',4,6-Pentachlorobiphenyl	109	74472-35-8	4CL, 2M
2,3,3',4',6-Pentachlorobiphenyl	110	38380-03-9	4CL, 2M
2,3,3',5,5'-Pentachlorobiphenyl	111	39635-32-0	CP1, 4CL, 2M
2,3,3',5,6-Pentachlorobiphenyl	112	74472-36-9	4CL, 2M
2,3,3',5',6-Pentachlorobiphenyl	113	68194-10-5	4CL, 2M
2,3,4,4',5-Pentachlorobiphenyl	114	74472-37-0	CP1, 4CL, PP, 2M
2,3,4,4',6-Pentachlorobiphenyl	115	74472-38-1	4CL, PP
2,3,4,5,6-Pentachlorobiphenyl	116	18259-05-7	4CL, 2M
2,3,4',5,6-Pentachlorobiphenyl	117	68194-11-6	4CL, 2M
2,3',4,4',5-Pentachlorobiphenyl	118	31508-00-6	CP1, 4CL, PP, 2M
2,3',4,4',6-Pentachlorobiphenyl	119	56558-17-9	4CL, PP
2,3',4,5,5'-Pentachlorobiphenyl	120	68194-12-7	CP1, 4CL, 2M
2,3',4,5',6-Pentachlorobiphenyl	121	56558-18-0	4CL, 2M
2,3,3',4',5'-Pentachlorobiphenyl	122	76842-07-4	CP1, 4CL, 2M
2,3',4,4',5'-Pentachlorobiphenyl	123	65510-44-3	CP1, 4CL, PP, 2M
2,3',4',5,5'-Pentachlorobiphenyl	124	70424-70-3	CP1, 4CL, 2M
2,3',4',5',6-Pentachlorobiphenyl	125	74472-39-2	4CL, 2M
3,3',4,4',5-Pentachlorobiphenyl	126	57465-28-8	CP0, 4CL, PP, 2M
3,3',4,5,5'-Pentachlorobiphenyl	127	39635-33-1	CP0, 4CL, 2M
2,2',3,3',4,4'-Hexachlorobiphenyl	128	38380-07-3	4CL, PP, 2M
2,2',3,3',4,5-Hexachlorobiphenyl	129	55215-18-4	4CL, 2M
2,2',3,3',4,5'-Hexachlorobiphenyl	130	52663-66-8	4CL, 2M
2,2',3,3',4,6-Hexachlorobiphenyl	131	61798-70-7	4CL, 2M
2,2',3,3',4,6'-Hexachlorobiphenyl	132	38380-05-1	4CL, 2M
2,2',3,3',5,5'-Hexachlorobiphenyl	133	35694-04-3	4CL, 2M
2,2',3,3',5,6-Hexachlorobiphenyl	134	52704-70-8	4CL, 2M
2,2',3,3',5,6'-Hexachlorobiphenyl	135	52744-13-5	4CL, 2M
2,2',3,3',6,6'-Hexachlorobiphenyl	136	38411-22-2	4CL, 2M
2,2',3,4,4',5-Hexachlorobiphenyl	137	35694-06-5	4CL, PP, 2M
2,2',3,4,4',5'-Hexachlorobiphenyl	138	35065-28-2	4CL, PP, 2M
2,2',3,4,4',6-Hexachlorobiphenyl	139	56030-56-9	4CL, PP
2,2',3,4,4',6'-Hexachlorobiphenyl	140	59291-64-4	4CL, PP
2,2',3,4,5,5'-Hexachlorobiphenyl	141	52712-04-6	4CL, 2M
2,2',3,4,5,6-Hexachlorobiphenyl	142	41411-61-4	4CL, 2M
2,2',3,4,5,6'-Hexachlorobiphenyl	143	68194-15-0	4CL, 2M
2,2',3,4,5',6-Hexachlorobiphenyl	144	68194-14-9	4CL, 2M
2,2',3,4,6,6'-Hexachlorobiphenyl	145	74472-40-5	4CL
2,2',3,4',5,5'-Hexachlorobiphenyl	146	51908-16-8	4CL, 2M
2,2',3,4',5,6-Hexachlorobiphenyl	147	68194-13-8	4CL, 2M
2,2',3,4',5,6'-Hexachlorobiphenyl	148	74472-41-6	4CL, 2M
2,2',3,4',5',6-Hexachlorobiphenyl	149	38380-04-0	4CL, 2M
2,2',3,4',6,6'-Hexachlorobiphenyl	150	68194-08-1	4CL
2,2',3,5,5',6-Hexachlorobiphenyl	151	52663-63-5	4CL, 2M
2,2',3,5,6,6'-Hexachlorobiphenyl	152	68194-09-2	4CL, 2M
2,2',4,4',5,5'-Hexachlorobiphenyl	153	35065-27-1	4CL, PP, 2M
2,2',4,4',5,6'-Hexachlorobiphenyl	154	60145-22-4	4CL, PP
2,2',4,4',6,6'-Hexachlorobiphenyl	155	33979-03-2	4CL, PP
2,3,3',4,4',5-Hexachlorobiphenyl	156	38380-08-4	CP1, 4CL, PP, 2M
2,3,3',4,4',5'-Hexachlorobiphenyl	157	69782-90-7	CP1, 4CL, PP, 2M
2,3,3',4,4',6-Hexachlorobiphenyl	158	74472-42-7	4CL, PP, 2M
2,3,3',4,5,5'-Hexachlorobiphenyl	159	39635-35-3	CP1, 4CL, 2M
2,3,3',4,5,6-Hexachlorobiphenyl	160	41411-62-5	4CL, 2M
2,3,3',4,5',6-Hexachlorobiphenyl	161	74472-43-8	4CL, 2M
2,3,3',4',5,5'-Hexachlorobiphenyl	162	39635-34-2	CP1, 4CL, 2M
2,3,3',4',5,6-Hexachlorobiphenyl	163	74472-44-9	4CL, 2M
2,3,3',4',5',6-Hexachlorobiphenyl	164	74472-45-0	4CL, 2M
2,3,3',5,5',6-Hexachlorobiphenyl	165	74472-46-1	4CL, 2M
2,3,4,4',5,6-Hexachlorobiphenyl	166	41411-63-6	4CL, PP, 2M
2,3',4,4',5,5'-Hexachlorobiphenyl	167	52663-72-6	CP1, 4CL, PP, 2M
2,3',4,4',5',6-Hexachlorobiphenyl	168	59291-65-5	4CL, PP, 2M
3,3',4,4',5,5'-Hexachlorobiphenyl	169	32774-16-6	CP0, 4CL, PP, 2M
2,2',3,3',4,4',5-Heptachlorobiphenyl	170	35065-30-6	4CL, PP, 2M
2,2',3,3',4,4',6-Heptachlorobiphenyl	171	52663-71-5	4CL, PP, 2M
2,2',3,3',4,5,5'-Heptachlorobiphenyl	172	52663-74-8	4CL, 2M
2,2',3,3',4,5,6-Heptachlorobiphenyl	173	68194-16-1	4CL, 2M
2,2',3,3',4,5,6'-Heptachlorobiphenyl	174	38411-25-5	4CL, 2M
2,2',3,3',4,5',6-Heptachlorobiphenyl	175	40186-70-7	4CL, 2M
2,2',3,3',4,6,6'-Heptachlorobiphenyl	176	52663-65-7	4CL, 2M
2,2',3,3',4,5',6'-Heptachlorobiphenyl	177	52663-70-4	4CL, 2M
2,2',3,3',5,5',6-Heptachlorobiphenyl	178	52663-67-9	4CL, 2M
2,2',3,3',5,6,6'-Heptachlorobiphenyl	179	52663-64-6	4CL, 2M
2,2',3,4,4',5,5'-Heptachlorobiphenyl	180	35065-29-3	4CL, PP, 2M
2,2',3,4,4',5,6-Heptachlorobiphenyl	181	74472-47-2	4CL, PP, 2M
2,2',3,4,4',5,6'-Heptachlorobiphenyl	182	60145-23-5	4CL, PP, 2M
2,2',3,4,4',5',6-Heptachlorobiphenyl	183	52663-69-1	4CL, PP, 2M
2,2',3,4,4',6,6'-Heptachlorobiphenyl	184	74472-48-3	4CL, PP
2,2',3,4,5,5',6-Heptachlorobiphenyl	185	52712-05-7	4CL, 2M
2,2',3,4,5,6,6'-Heptachlorobiphenyl	186	74472-49-4	4CL, 2M
2,2',3,4',5,5',6-Heptachlorobiphenyl	187	52663-68-0	4CL, 2M
2,2',3,4',5,6,6'-Heptachlorobiphenyl	188	74487-85-7	4CL, 2M
2,3,3',4,4',5,5'-Heptachlorobiphenyl	189	39635-31-9	CP1, 4CL, PP, 2M
2,3,3',4,4',5,6-Heptachlorobiphenyl	190	41411-64-7	4CL, PP, 2M
2,3,3',4,4',5',6-Heptachlorobiphenyl	191	74472-50-7	4CL, PP, 2M
2,3,3',4,5,5',6-Heptachlorobiphenyl	192	74472-51-8	4CL, 2M
2,3,3',4',5,5',6-Heptachlorobiphenyl	193	69782-91-8	4CL, 2M
2,2',3,3',4,4',5,5'-Octachlorobiphenyl	194	35694-08-7	4CL, PP, 2M
2,2',3,3',4,4',5,6-Octachlorobiphenyl	195	52663-78-2	4CL, PP, 2M
2,2',3,3',4,4',5,6'-Octachlorobiphenyl	196	42740-50-1	4CL, PP, 2M
2,2',3,3',4,4',6,6'-Octachlorobiphenyl	197	33091-17-7	4CL, PP, 2M
2,2',3,3',4,5,5',6-Octachlorobiphenyl	198	68194-17-2	4CL, 2M
2,2',3,3',4,5,5',6'-Octachlorobiphenyl	199	52663-75-9	4CL, 2M
2,2',3,3',4,5,6,6'-Octachlorobiphenyl	200	52663-73-7	4CL, 2M
2,2',3,3',4,5',6,6'-Octachlorobiphenyl	201	40186-71-8	4CL, 2M
2,2',3,3',5,5',6,6'-Octachlorobiphenyl	202	2136-99-4	4CL, 2M
2,2',3,4,4',5,5',6-Octachlorobiphenyl	203	52663-76-0	4CL, PP, 2M
2,2',3,4,4',5,6,6'-Octachlorobiphenyl	204	74472-52-9	4CL, PP, 2M
2,3,3',4,4',5,5',6-Octachlorobiphenyl	205	74472-53-0	4CL, PP, 2M
2,2',3,3',4,4',5,5',6-Nonachlorobiphenyl	206	40186-72-9	4CL, PP, 2M
2,2',3,3',4,4',5,6,6'-Nonachlorobiphenyl	207	52663-79-3	4CL, PP, 2M
2,2',3,3',4,5,5',6,6'-Nonachlorobiphenyl	208	52663-77-1	4CL, 2M
Decachlorobiphenyl	209	2051-24-3	4CL, PP, 2M

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