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7-Methyl-9,10-dihydrobenzo[a]pyrene

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Identification
Molecular formula
C21H16
CAS number
3650-19-3
IUPAC name
7-methyl-9,10-dihydrobenzo[a]pyrene
State
State

At room temperature, 7-Methyl-9,10-dihydrobenzo[a]pyrene is in a solid state. It remains solid under standard conditions due to its molecular structure and relatively high molecular weight. It is a hydrophobic compound owing to its hydrocarbon nature.

Melting point (Celsius)
145.00
Melting point (Kelvin)
418.15
Boiling point (Celsius)
636.70
Boiling point (Kelvin)
909.90
General information
Molecular weight
278.37g/mol
Molar mass
278.3660g/mol
Density
1.3100g/cm3
Appearence

7-Methyl-9,10-dihydrobenzo[a]pyrene is a polycyclic aromatic hydrocarbon, typically appearing as a pale yellow crystalline solid. This compound shares structural similarities to other benzo[a]pyrene derivatives, characterized by fused aromatic rings, contributing to its solid-state appearance.

Comment on solubility

Solubility of 7-methyl-9,10-dihydrobenzo[a]pyrene

7-methyl-9,10-dihydrobenzo[a]pyrene, a polycyclic aromatic hydrocarbon (PAH), exhibits notable solubility characteristics that are important in various chemical and environmental contexts.

Key Points on Solubility:

  • Solvent Dependence: The solubility of this compound is dependent on the solvent used. It tends to be more soluble in non-polar organic solvents such as dichloromethane and chloroform.
  • Water Solubility: 7-methyl-9,10-dihydrobenzo[a]pyrene shows extremely low solubility in water, making it hydrophobic in nature. The water solubility is often less than 0.1 mg/L.
  • Environmental Implications: Due to its low water solubility, this compound can accumulate in aquatic environments, leading to potential toxic effects in organisms.
  • Temperature Influences: In general, solubility can increase with temperature, although this is more pronounced in organic solvents compared to water.

In summary, the solubility of 7-methyl-9,10-dihydrobenzo[a]pyrene is characterized by its significant hydrophobic properties, which dictate its behavior in both chemical reactions and environmental systems. Understanding these properties is essential for predicting its fate and transport in various applications.

Interesting facts

Interesting Facts about 7-methyl-9,10-dihydrobenzo[a]pyrene

7-methyl-9,10-dihydrobenzo[a]pyrene is a fascinating compound that belongs to the family of polycyclic aromatic hydrocarbons (PAHs). These compounds are known for their complex structures and significant presence in various environmental contexts. Here are some intriguing facts about this particular compound:

  • Source of Formation: 7-methyl-9,10-dihydrobenzo[a]pyrene can be formed during the incomplete combustion of organic materials, such as fossil fuels and biomass. This makes it a common pollutant found in environmental samples.
  • Toxicology: Like many PAHs, this compound is of interest to toxicologists. It has been studied for its potential adverse effects on human health, particularly regarding its carcinogenic properties. PAHs, in general, can bind to DNA, leading to mutations.
  • Environmental Persistence: 7-methyl-9,10-dihydrobenzo[a]pyrene tends to be persistent in the environment. Its stability means it can accumulate in soil and sediment over time, raising concerns about ecological impacts and human exposure.
  • Detection Methods: Chemists utilize various analytical methods to detect and quantify PAHs in environmental samples, including gas chromatography coupled with mass spectrometry (GC-MS). These methods are crucial for monitoring pollution levels.
  • Model Compound: This compound serves as a model for studying the behavior of larger PAHs. Understanding its chemical properties helps researchers assess the risks associated with complex PAH mixtures.
  • Regulatory Interest: The U.S. Environmental Protection Agency (EPA) and other regulatory bodies monitor PAH levels within various environments to protect public health. Regulatory frameworks often guide remediation efforts in contaminated sites.

In summary, 7-methyl-9,10-dihydrobenzo[a]pyrene is more than just a chemical formula; it represents a critical area of study within environmental science and toxicology. Understanding its properties and risks is essential for addressing public health and environmental concerns.

Synonyms
BENZO(a)PYRENE, 9,10-DIHYDRO-7-METHYL-
7499-32-3
1':2'-Dihydro-4'-methyl-3:4-benzpyrene
OA1LH0Q8WV
9,10-Dihydro-7-methylbenzo(a)pyrene
9,10-Dihydro-7-methylbenzo[a]pyrene
NSC-407643
9,10-Dihydro-7-methyl-benzo(a)pyrene
NSC 407643
BRN 3304066
NSC407643
UNII-OA1LH0Q8WV
3-05-00-02488 (Beilstein Handbook Reference)
DTXSID50225948
Benzo[a]pyrene,10-dihydro-7-methyl-
WLN: L D6 B6666 2AB T EUT&&&&J H1