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1,5,9 cyclododecatriene: verschil tussen versies

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(9 tussenliggende versies door één gebruiker worden niet weergegeven)
Regel 1: Regel 1:
 
{{ Definition|title=1,5,9-Cyclododecatriene (CDDT)  
 
{{ Definition|title=1,5,9-Cyclododecatriene (CDDT)  
|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>}}
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|definition= 1,5,9-Cyclododecatriene is a liquid with a yellow tint and pungent odour<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 to produce [[cyclododecane]], which is used in the production of dodecanedioic acid.
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== Notes ==
  
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.
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{| class="toccolours" border="1" style="float: right; clear: right; margin: 0 0 1em 1em; border-collapse: collapse;"
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! bgcolor="#FF8888" | 1,5,9 cyclododecatriene
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|-
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| align="center" bgcolor="#FFFFFF" | [[Image:CDDT.JPG|125px|CDDT]]  
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|-
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! bgcolor="#8888FF" | Formula
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|-
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| align="center" | C<sub>12</sub>H<sub>18</sub>
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|-
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|}
  
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.<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>
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CDDT is used to produce [[cyclododecane]], which is used in the production of dodecanedioic acid. Dodecanedioic acid can be used in dyes, solvents, adhesives, cleaning agents fertilisers,... .
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CDDT has a high [[volatile|volatility]], which causes it to have an aquatic [[half-life]] (by evaporation) of only 1,3 hours. In the atmosphere it will be degraded rapidly (in less than 30 minutes).  As a consequence CDDT will be found mostly in soils, and very little in water, air or sediment. It is not considered to be biodegradable and has a low tendency to [[bioaccumulation|bioaccumulate]].
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Aquatic concentrations above 0,2 mg/l cause acute [[toxic|toxicity]] to fish, algae and invertebrates. A dose of 2,5 g/kg body weight is lethal to rats.
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Considering CDDT it is only used as an intermediate in the production of other chemicals, its high volatility and degradability, it has only a minor potential aquatic exposure and thus poses only a minor risk to aquatic organisms<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>.
  
 
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Versie van 2 okt 2009 om 14:40

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

Notes

1,5,9 cyclododecatriene
CDDT
Formula
C12H18

CDDT is used to produce cyclododecane, which is used in the production of dodecanedioic acid. Dodecanedioic acid can be used in dyes, solvents, adhesives, cleaning agents fertilisers,... .

CDDT has a high volatility, which causes it to have an aquatic half-life (by evaporation) of only 1,3 hours. In the atmosphere it will be degraded rapidly (in less than 30 minutes). As a consequence CDDT will be found mostly in soils, and very little in water, air or sediment. It is not considered to be biodegradable and has a low tendency to bioaccumulate.

Aquatic concentrations above 0,2 mg/l cause acute toxicity to fish, algae and invertebrates. A dose of 2,5 g/kg body weight is lethal to rats.

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


Environmental standards and legislation

Included in the OSPAR list of substances of priority action


References

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