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== Case studies ==
[[PCB and heavy metals in beached sperm whales]]<P>
[[Heavy metal content of mussels in the Western Scheldt estuary]]<P>
[[Common starfish can act as a bioindicator for heavy metal pollution]]<P>
[[Effects of heavy metals on the sperm quality and the larvae survival of sea urchins]]<P>
[[Heavy metals in various Belgian benthic invertebrates]]
== Environmental standards and legislation ==
== Environmental standards and legislation ==

Versie van 10 aug 2009 om 15:17

Definition of 1,5,9-Cyclododecatriene (CDDT):
1,5,9-Cyclododecatriene is a liquid with a yellow tint and pungent odor. [1]
This is the common definition for 1,5,9-Cyclododecatriene (CDDT), other definitions can be discussed in the article

CDDT is used in to produce cyclododecane which is used in the production of dodecanedioic acid.

It has a high volatibility, therefore half of the concentration in a river can be evaporated in less than 1,3 hours. In the atmosphere it will be degraded rapidly (less than 30 minutes). As a consequence CDDT will be found mostly in soils, and very little in water, air or sediment. It however is considered not to be biodegradable. It has a low tendency towards bioaccumulation. Concentrations above 0,2 mg/l cause acute toxicity to fish, algae and invertebrates. Doses of 2,5 g/kg body weight were lethal to rats.

Considering CDDT it is only used as an intermidiate in the production of other chemicals, its high votality and degrability, it has only a minor potential aquatic exposure and thus also only a minor risk to aquatic organisms.[1]

Environmental standards and legislation

Included in the OSPAR list of substances of priority action

See also

Cadmium on the ED North Database

OSPAR background document on cadmium


  1. 1,0 1,1 [www.epa.gov/hpv/pubs/summaries/cyclo/c13404rr.pdf EPA High Production Volume Challenge Program (HPV) 2003: Robust Summaries & Test Plans: C1,5,9-Cyclododecatriene]