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Chryzene
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Description
Chryzene
Other Names: Chrysene, 1,2-Benzphenanthrene, Benzo[d]naphtho[2,1-b]thiophene (archaic name)
CAS Number: 218-01-9
Sum Formula: C₁₈H₁₂
Molar Mass: 228.29 g/mol
Appearance: Yellowish crystalline solid
Chryzene is a polycyclic aromatic hydrocarbon (PAH) composed of four fused benzene rings arranged in a linear configuration. It occurs naturally in coal tar and as a byproduct of incomplete combustion. It is primarily used in chemical research, environmental analysis, and as a reference standard in the detection and quantification of PAHs in environmental samples.
Chemical and Physical Properties
Density: ~1.28 g/cm³
Melting Point: 254–256°C
Boiling Point: ~448°C
Solubility in Water: Practically insoluble
Solubility in Organic Solvents: Soluble in benzene, toluene, chloroform, and other nonpolar solvents
Odor: Odorless or faint aromatic odor
Stability: Stable under recommended storage conditions; light-sensitive
Applications
Used as a reference standard in environmental testing (e.g., air, soil, water PAH analysis)
Studied in research on combustion products and atmospheric pollutants
Applicable in organic chemistry as a model PAH compound
Employed in regulatory monitoring and remediation studies
Safety
Signal Word: Danger
H341: Suspected of causing genetic defects [Warning Germ cell mutagenicity]
H350: May cause cancer [Danger Carcinogenicity]
H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]
P203, P273, P280, P318, P391, P405, and P501
First Aid Measures
Eye Contact: Rinse cautiously with water. Seek medical attention if irritation develops
Skin Contact: Wash with soap and water. Remove contaminated clothing
Inhalation: Move to fresh air. If symptoms persist, seek medical help
Ingestion: Rinse mouth. Do not induce vomiting. Seek medical advice immediately
Handling and Storage
Store in a cool, dry, and well-ventilated area
Protect from light and strong oxidizing agents
Handle with appropriate PPE to avoid inhalation of dust and contact with skin