Polychlorinated dibenzofurans (PCDFs) are a family of organic compounds with one or several of the hydrogens in the dibenzofuran structure replaced by chlorines. For example, 2,3,7,8-tetrachlorodibenzofuran (TCDF) has chlorine atoms substituted for each of the hydrogens on the number 2, 3, 7, and 8 carbons (see structure in the upper left corner of the second image). Polychlorinated dibenzofurans with chlorines at least in positions 2,3,7 and 8 are much more toxic than the parent compound dibenzofurane, with properties and chemical structures similar to polychlorinated dibenzodioxins. These groups together are often inaccurately called dioxins. They are known developmental toxicants, and suspected human carcinogens. PCDFs tend to co-occur with polychlorinated dibenzodioxins (PCDDs). PCDFs can be formed by pyrolysis or incineration at temperatures below 1200 °C of chlorine containing products, such as PVC, PCBs, and other organochlorides, or of non-chlorine containing products in the presence of chlorine donors.^[1] Dibenzofurans are known persistent organic pollutants (POP), classified among the dirty dozen in the Stockholm Convention on Persistent Organic Pollutants.

Congeners

number	formula	name	CAS Number	InChIKey
PCDF-1	${\displaystyle {\ce {C12H7ClO}}}$	1-chlorodibenzofuran	84761-86-4	WRSMJZYBNIAAEE-UHFFFAOYSA-N
PCDF-2	${\displaystyle {\ce {C12H7ClO}}}$	2-chlorodibenzofuran	51230-49-0	PRKTYWJFCODJOA-UHFFFAOYSA-N
PCDF-3	${\displaystyle {\ce {C12H7ClO}}}$	3-chlorodibenzofuran	25074-67-3	BBOZMMAURMEVAR-UHFFFAOYSA-N
PCDF-4	${\displaystyle {\ce {C12H7ClO}}}$	4-chlorodibenzofuran	74992-96-4	RHRYBWFAHXCUCR-UHFFFAOYSA-N
PCDF-12	${\displaystyle {\ce {C12H6Cl2O}}}$	1,2-dichlorodibenzofuran	64126-85-8	QVAPRJWSOUITIF-UHFFFAOYSA-N
PCDF-13	${\displaystyle {\ce {C12H6Cl2O}}}$	1,3-dichlorodibenzofuran	94538-00-8	VKIBKEFGJSPRJC-UHFFFAOYSA-N
PCDF-14	${\displaystyle {\ce {C12H6Cl2O}}}$	1,4-dichlorodibenzofuran	94538-01-9	VHQCMZLPHWGUDB-UHFFFAOYSA-N
PCDF-16	${\displaystyle {\ce {C12H6Cl2O}}}$	1,6-dichlorodibenzofuran	74992-97-5	JRSRWACZUFLWKF-UHFFFAOYSA-N
PCDF-17	${\displaystyle {\ce {C12H6Cl2O}}}$	1,7-dichlorodibenzofuran	94538-02-0	XRQNHPGZRFKBJW-UHFFFAOYSA-N
PCDF-18	${\displaystyle {\ce {C12H6Cl2O}}}$	1,8-dichlorodibenzofuran	81638-37-1	UAFNQQBPUWFPGC-UHFFFAOYSA-N
PCDF-19	${\displaystyle {\ce {C12H6Cl2O}}}$	1,9-dichlorodibenzofuran	70648-14-5	AEKSGHBVWJHELW-UHFFFAOYSA-N
PCDF-23	${\displaystyle {\ce {C12H6Cl2O}}}$	2,3-dichlorodibenzofuran	64126-86-9	GETJJZZRPQFSFM-UHFFFAOYSA-N
PCDF-24	${\displaystyle {\ce {C12H6Cl2O}}}$	2,4-dichlorodibenzofuran	24478-74-8	LHTCKMYRNOGUOA-UHFFFAOYSA-N
PCDF-26	${\displaystyle {\ce {C12H6Cl2O}}}$	2,6-dichlorodibenzofuran	60390-27-4	XVLCNKFGFHUQNL-UHFFFAOYSA-N
PCDF-27	${\displaystyle {\ce {C12H6Cl2O}}}$	2,7-dichlorodibenzofuran	74992-98-6	DOZUTNBCPVUMPY-UHFFFAOYSA-N
PCDF-28	${\displaystyle {\ce {C12H6Cl2O}}}$	2,8-dichlorodibenzofuran	5409-83-6	IVVRJIDVYSPKFZ-UHFFFAOYSA-N
PCDF-34	${\displaystyle {\text{C}}_{12}^{}{\text{H}}_6^{}}$Zdroj:https://en.wikipedia.org?pojem=Polychlorinated_dibenzofurans >Text je dostupný pod licencí Creative Commons Uveďte autora – Zachovejte licenci, případně za dalších podmínek. Podrobnosti naleznete na stránce Podmínky užití.  čítajte viac o Polychlorinated_dibenzofurans Navigace: Módní doplňky > Šperkařství Šperky Chytré hodinky Galanterie Hodinářské firmy Hodinky Hodiny Módní doplňky Minerály Pokrývky hlavy Sklářství Zlatníci Zlatnictví Příbuzné výrazy : Řetízek (ozdoba) Šátek Beadweaving Bižuterie Bolo Dřevěný motýlek Deštník Digitálky Fiží Galanterie Hodinky Kšandy Kapesník Korálek Kravata Lanyard Modista Motýlek (oděvní doplněk) Odznak Pléd Placka (odznak) Rukávník Spona na kravatu Sponka do vlasů Tabulky (kolárek) Vějíř Text je dostupný za podmienok Creative Commons Attribution/Share-Alike License 3.0 Unported; prípadne za ďalších podmienok. Podrobnejšie informácie nájdete na stránke Podmienky použitia. Copyright.sk © 2024