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1,5,9 cyclododecatriene: verschil tussen versies

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|definition= 1,5,9-Cyclododecatriene is a liquid with a yellow tint and pungent odor. <ref name="epa">[http://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] </ref>}}
 
|definition= 1,5,9-Cyclododecatriene is a liquid with a yellow tint and pungent odor. <ref name="epa">[http://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] </ref>}}
  
CDDT is used in to produce [[cyclododecane]] which is used in the production of dodecanedioic acid.
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CDDT is used 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.
 
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.

Versie van 10 aug 2009 om 15:22

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 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


References

  1. 1,0 1,1 EPA High Production Volume Challenge Program (HPV) 2003: Robust Summaries & Test Plans: C1,5,9-Cyclododecatriene