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3-Methylcholanthrene
Also known as: 3-methylcholanthrene · 56-49-5 · Methylcholanthrene · 20-Methylcholanthrene
- CAS No.
- 56-49-5
- Formula
- C21H16
- Molar mass
- 268.4 g/mol
- PubChem CID
- 1674
Health hazard
Summary
3-Methylcholanthrene (C21H16), CAS 56-49-5. Common in labs and industry. Read on for hazards, storage, PPE and mixing rules.
Background
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Hazards
Serious long-term health effects (CMR, respiratory sensitizer).
Hazard statements
- H350: May cause cancer [Danger Carcinogenicity]
- H413: May cause long lasting harmful effects to aquatic life [Hazardous to the aquatic environment, long-term hazard]
Storage
Keep at room temperature, below 30 °C, out of direct heat.
Store somewhere well-ventilated and away from any ignition source.
Metal drums or tinted glass, tightly sealed.
Strong acids, strong bases and powerful oxidizers.
Personal protective equipment
Nitrile or butyl, at least 0.4 mm thick.
Safety goggles with side shields.
A2 organic-vapor cartridge if the room isn't well ventilated.
Occupational exposure limits (HSE)
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EU harmonised classification (ECHA C&L)
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Transport
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FDA recalls & enforcement
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Compatibilities
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Open comparator with 3-MethylcholanthrenePractical safety notes
- Serious health hazard (carcinogen, mutagen, reprotoxic, respiratory sensitizer). Substitute if possible; otherwise closed systems and medical surveillance.
Derived from the GHS classification shown above. These notes are generic guidance and do not replace the manufacturer's SDS or your local risk assessment.
FAQ
Is 3-Methylcholanthrene flammable?+
3-Methylcholanthrene (CAS 56-49-5) does not carry the GHS02 flame pictogram in our records. Always confirm with the manufacturer's SDS section 9 (flash point) before assuming a product is non-flammable.
What PPE should I wear when handling 3-Methylcholanthrene?+
Safety glasses with side shields and nitrile gloves are the baseline. Work inside a fume hood or use a suitable respirator. Check SDS section 8 for material-specific breakthrough times.
How should 3-Methylcholanthrene be stored?+
Store 3-Methylcholanthrene (CAS 56-49-5) in tightly closed original containers, in a cool, dry, well-ventilated area away from incompatible materials.
Is 3-Methylcholanthrene dangerous for the environment?+
No specific environmental pictogram (GHS09) is listed in our records for 3-Methylcholanthrene, but any chemical waste should be handled through your site's hazardous-waste procedure, not poured down the drain.
Where can I find the official Safety Data Sheet for 3-Methylcholanthrene?+
Official, up-to-date SDS documents are published by each manufacturer (Sigma-Aldrich, Merck, Thermo Fisher, VWR, Carl Roth, etc.) and by regulators such as ECHA and NIOSH. This page is an educational summary and does not replace the manufacturer's SDS.
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Reference information only. Not a Safety Data Sheet. Always consult the manufacturer's official SDS and your local regulations before handling, storing or transporting any chemical. Terms of use.