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Methylmercury

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Identification
Molecular formula
CH3Hg+
CAS number
22967-92-6
IUPAC name
methylmercury(1+)
State
State

Methylmercury at room temperature is typically in the form of a dissolved ion in solution or part of a chemical complex, rather than as a standalone substance. It is often studied as part of environmental samples, especially in aquatic systems where it appears in water or sediment contexts.

Melting point (Celsius)
-43.00
Melting point (Kelvin)
230.00
Boiling point (Celsius)
189.00
Boiling point (Kelvin)
462.00
General information
Molecular weight
215.63g/mol
Molar mass
215.6250g/mol
Density
3.1900g/cm3
Appearence

Methylmercury is typically a white crystalline solid or compound when in its chloride salt form. The compound itself is not usually isolated as a pure substance as it is often found in solution or in complex with other substances.

Comment on solubility

Solubility of Methylmercury(1+)

Methylmercury(1+), a highly toxic organomercury compound, displays notable solubility characteristics that raise significant environmental and health concerns. Its solubility primarily depends on various factors, including the pH of the solution and the presence of organic matter.

Key Points on Solubility:

  • Water Solubility: Methylmercury(1+) is reasonably soluble in water, which facilitates its mobility in aquatic environments.
  • Organic Solvents: It tends to be more soluble in organic solvents, leading to potential bioaccumulation in organisms.
  • pH Influence: The solubility can vary significantly with changes in pH—higher solubility occurs in more acidic conditions.
  • Binding Behavior: Methylmercury can bind to organic matter in sediments, impacting its bioavailability and transport in ecosystems.

Moreover, it's important to note that “bioavailability often correlates with solubility”, which implies that higher solubility enhances uptake by living organisms. The presence of methylmercury(1+) in water systems not only poses risks to aquatic life but also raises concerns for human health through the food chain.

In conclusion, the solubility properties of methylmercury(1+) contribute to its persistence in the environment and its potential to harm both wildlife and human populations. Awareness of its solubility behavior is crucial for effective management and remediation strategies.

Interesting facts

Interesting Facts About Methylmercury(1+)

Methylmercury(1+) is a fascinating yet concerning compound, known for its unique properties and significant impact on both environmental and human health. Here are some noteworthy aspects:

  • Formation and Sources: Methylmercury is primarily formed in aquatic ecosystems through the methylation of inorganic mercury by microorganisms. It is commonly found in fish and water sources, leading to bioaccumulation.
  • Bioaccumulation: Due to its lipophilic nature, methylmercury accumulates in living organisms, especially in the fatty tissues of fish and other aquatic animals. This poses a threat to higher trophic levels, including humans, who consume these fish.
  • Toxicological Effects: This compound is notorious for its neurotoxic effects. Exposure can lead to severe neurological disorders, particularly in fetuses and young children. Symptoms include cognitive impairments, motor dysfunction, and sensory deficits.
  • Environmental Impact: Methylmercury can persist in the environment for extended periods, making it a global concern. Its propagation through the food chain highlights the importance of monitoring and regulating mercury emissions.
  • Regulations and Concerns: Given its toxicity, many countries have instituted regulations to limit mercury emissions and reduce methylmercury formation in the environment. Public health advisories often recommend limiting the consumption of certain fish species known to have high levels of methylmercury.
  • Historical Context: The devastating effects of methylmercury exposure were infamously highlighted during the Minamata Bay disaster in Japan in the 1950s, where industrial discharge led to mass poisoning, underscoring the compound’s potential hazards.

In summary, methylmercury(1+) is a prime example of how a compound can have profound implications for ecological health and human safety. Understanding its behavior, sources, and impact is critical for chemical scientists, environmentalists, and public health officials alike.

Synonyms
Methylmercury(1+)
Methylmercury II
Methylmercury ion
22967-92-6
CH3Hg+
Methylmercury ion(1+)
MeHg
AKOS015903545
NS00075542
C18672
Q414075