Benzo[ghi]perylene in your home: a safety profile

What is benzo[ghi]perylene?

Also known as: 1,12-Benzoperylene, 1,12-Benzperylene, Benzo[g,h,i]perylene, BENZO(GHI)PERYLENE.

CAS number

191-24-2

Molecular formula

C22H12

Molecular weight

276.3 g/mol

SMILES

C1=CC2=C3C(=C1)C4=CC=CC5=C4C6=C(C=C5)C=CC(=C36)C=C2

PubChem CID

9117

Regulatory consensus

1 regulatory bodyhas classified Benzo[ghi]perylene.

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where your home encounter benzo[ghi]perylene

• Indoor Environments — combustion products
• Occupational Environments — coal tar, road paving

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Benzo[ghi]perylene:

• N/A — exposure reduction
  Trade-offs: Exposure reduction does not eliminate the hazard but lowers risk to acceptable levels when alternatives are not available or practical. Requires ongoing monitoring and compliance.
  Relative cost: 1.2-2×
• Combustion source control
  Trade-offs: Removes 95-99% of dissolved contaminants including metals, PFAS, nitrates; wastes 2-4 gallons per gallon produced (improving with newer systems); removes beneficial minerals; $0.05-0.25/gallon; requires pre-treatment for longevity.
  Relative cost: 1.2-2×

Frequently asked questions