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Polychlorinated dibenzo-p-dioxin (PCDD)

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Identification
Molecular formula
C12H2Cl6O2
CAS number
19408-74-3
IUPAC name
1,2,3,7,8,9-hexachlorodibenzo-p-dioxin
State
State
This compound is typically in a solid state at room temperature.
Melting point (Celsius)
257.00
Melting point (Kelvin)
530.00
Boiling point (Celsius)
760.00
Boiling point (Kelvin)
1 033.00
General information
Molecular weight
390.88g/mol
Molar mass
389.9120g/mol
Density
1.8350g/cm3
Appearence

1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin typically appears as a white crystalline solid.

Comment on solubility

Solubility of 1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin

1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin (HCDD) presents unique solubility characteristics that merit attention. As a member of the dioxin family, this compound is notorious for its environmental persistence and bioaccumulation potential. Here are some key points regarding its solubility:

  • Solvent Dependence: HCDD is highly hydrophobic, meaning it has a low solubility in water. This characteristic limits its distribution in aqueous environments.
  • Organic Solvents: In contrast, 1,2,3,7,8,9-HCDD displays significant solubility in organic solvents such as chloroform, acetone, and hexane. This property is crucial for extraction and analytical methods used in environmental monitoring.
  • Environmental Behavior: Due to its low water solubility, HCDD tends to advertently accumulate in sediments and lipid-rich tissues of organisms, leading to a bioaccumulation process that can impact food chains.
  • Temperature Effects: Solubility may vary with temperature, typically increasing in organic solvents as temperature rises, which is an important consideration during laboratory assessments.

In summary, the solubility of 1,2,3,7,8,9-hexachlorodibenzo-p-dioxin is markedly influenced by its chemical structure, showcasing pronounced hydrophobicity while being highly soluble in organic solvents. This distinction plays a vital role in its environmental behavior and toxicity.

Interesting facts

Interesting Facts About 1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin

1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin, often referred to as HCDD, is a significant compound due to its toxicological properties and environmental impact. Here are some intriguing points to consider about this compound:

  • Toxicity: HCDD is classified among the most toxic compounds known, with potential to cause serious health implications in both humans and wildlife. Exposure can lead to a range of disorders, including immune system damage and reproductive issues.
  • Environmental Persistence: This compound is notorious for its persistence in the environment. It resists degradation and can remain in soil and sediments for many years, accumulating in the food chain.
  • Source of Contamination: HCDD can be released into the environment through industrial processes, particularly those involving chlorination, and as byproducts in the production of certain herbicides and pesticides.
  • The Dioxin Family: HCDD is part of a larger family of compounds known as dioxins, which includes various polychlorinated dibenzo-p-dioxins (PCDDs). The toxicity and environmental impact vary among the different types, with HCDD being one of the most concerning.
  • Regulation: Due to its detrimental effects, HCDD has been the subject of strict environmental regulations. Authorities such as the US Environmental Protection Agency (EPA) monitor dioxin levels and implement measures to limit exposure.

In scientific research, HCDD serves as a model for studying environmental toxicology and the impact of pollutants on ecosystems. Understanding its behavior and effects plays a crucial role in developing strategies to mitigate its presence and protect both human health and the environment.

"Every chemical compound has its story, and the story of HCDD is one of caution and responsibility."

Synonyms
1,2,3,7,8,9-HEXACHLORODIBENZO-P-DIOXIN
19408-74-3
1,2,3,7,8,9-Hexachlorodibenzodioxin
1,2,3,7,8,9-HxCDD
Dibenzo-p-dioxin, 1,2,3,7,8,9-hexachloro-
HSDB 6866
D 70
PCDD 70
UNII-CV865M3P15
BRN 1353896
1,2,3,7,8,9-Hexachlorodibenzo(b,e)(1,4)dioxin
CV865M3P15
SCHEMBL2464142
DTXSID6023781
SCHEMBL29353168
SCHEMBL30118867
CHEBI:81504
LGIRBUBHIWTVCK-UHFFFAOYSA-N
PD197717
1,2,3,7,8,9-HXCD
DB-259081
HY-169475
1,2,3,7,8,9-Hexa-chlorodibenzo-p-dioxin
NS00098493
C18102
HEXACHLORODIBENZO-P-DIOXIN, 1,2,3,7,8,9-
Q27155428
1,2,3,7,8,9-HEXACHLORODIBENZO-P-DIOXIN [HSDB]
DIBENZO(B,E)(1,4)DIOXIN, 1,2,3,7,8,9-HEXACHLORO-