Benzo[a]pyrene
Benzo[a]pyrene (CAS: 50-32-8; C20H12) is a polycyclic aromatic hydrocarbon (PAH) known for its presence in combustion products. It is a pale yellow crystalline solid with a molecular weight of 252.31 g/mol. Benzo[a]pyrene is widely used as an analytical standard in environmental testing, toxicology research, and as a reference material for chromatography due to its carcinogenic properties. Its presence in the environment is closely monitored.
- IUPAC
- 3,4-Benzopyrene,3,4-Benzpyrene,Benzo[def]chrysene
- Synonyms
- 3,4-Benzopyrene3,4-BenzpyreneBenzo[def]chrysene
![Benzo[a]pyrene (C20H12) — chemical structure, CAS 50-32-8; Life Science, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F50-32-8.png&w=3840&q=75)
Analytical Reference Standard
Used as a certified reference material for the identification and quantification of polycyclic aromatic hydrocarbons (PAHs) in environmental samples such as air, water, and soil. Essential for validating analytical methods and ensuring regulatory compliance.
Toxicology Research
Employed in studies investigating the mechanisms of chemical carcinogenesis and genotoxicity. Its well-established mutagenic and carcinogenic effects make it a critical compound for understanding cellular damage and DNA repair pathways.
Environmental Monitoring
Serves as a key standard in environmental monitoring programs to assess the extent of contamination from sources like fossil fuel combustion, industrial emissions, and vehicle exhaust. Aids in risk assessment for human and ecological health.
Chromatography Applications
Utilized as a calibrant and reference compound in chromatographic techniques like High-Performance Liquid Chromatography (HPLC) and Gas Chromatography-Mass Spectrometry (GC-MS) for the separation and detection of PAHs.
| Molecular weight | 252.31 |
|---|---|
| Empirical formula | C20H12 |
| Grade | analytical standard, for environmental analysis |
| Boiling point | 495 °C(lit.) |
| Melting point | 177-180 °C(lit.) |



Hazard statements
- H317May cause an allergic skin reaction
- H340May cause genetic defects
- H350May cause cancer
- H360FD
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P201Obtain special instructions before use
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P308IF exposed or concerned
- P501Dispose of contents and container per local regulations
| Transport (UN / ADR) | UN 3077 9 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 45-46-60-61-43-50/53 |
| Safety statements (S) | 53-45-60-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Packaging | pkg of 100 mg |
|---|
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Benzo[a]pyrene used for?
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Benzo[a]pyrene (CAS: 50-32-8) is primarily used as an analytical standard for environmental monitoring and toxicology research, particularly in the study of polycyclic aromatic hydrocarbons (PAHs) and their carcinogenic effects. It is also employed in chromatography for calibration and method validation.
What is the CAS number and formula for Benzo[a]pyrene?
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The CAS number for Benzo[a]pyrene is 50-32-8, and its empirical formula is C20H12.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Benzo[a]pyrene as an analytical standard, suitable for environmental analysis. The specific purity is not detailed beyond its grade as an analytical standard; TSS does not represent it as USP, BP, or EP grade.
How is Benzo[a]pyrene packaged and shipped?
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Benzo[a]pyrene is typically packaged in quantities such as 100 mg. As a hazardous substance, it is shipped according to international regulations for dangerous goods, with appropriate hazard labelling (UN 3077).
What are the primary safety concerns when handling Benzo[a]pyrene?
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Benzo[a]pyrene is classified as a Danger substance. It can cause an allergic skin reaction (H317), may cause genetic defects (H340), may cause cancer (H350), and may damage fertility or the unborn child (H360FD). It is also very toxic to aquatic life with long lasting effects (H410). Strict adherence to safety protocols, including the use of personal protective equipment and handling in a well-ventilated area or fume hood, is essential.
How can I request a sample or quote for Benzo[a]pyrene?
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To request a sample or a quote for Benzo[a]pyrene, please contact the Tech Serve Solutions sales team via our website or listed contact information, providing the product name and CAS number (50-32-8).
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