Pyrene
CAS 129-00-0
EC 204-927-3
Formula C16H10
MW 202.25 g/mol
Pigments & Colorants Printing & PackagingTextile, Leather & PaperCoatings, Adhesives, Sealants & Elastomers
Description
Pyrene (CAS 129-00-0, EC 204-927-3, formula C16H10) is a polycyclic aromatic hydrocarbon composed of four fused benzene rings. Also referenced under NSC 66449 and NSC 17534, it belongs to the PAH chemical family and carries no assigned E-code. It is classified within the pigments and colorants category.
In printing inks and coatings, pyrene functions as a fluorescent colorant, absorbing UV light and re-emitting it as visible blue fluorescence, which enables optical brightening and tracer applications. It is also used in adhesive and sealant formulations as a fluorescent marker to verify coverage and detect defects during quality control processes.
Pyrene is supplied as a crystalline solid, typically at 98% purity grade. It falls under REACH regulation and requires an up-to-date Safety Data Sheet for procurement within the EU. Buyers should confirm packaging format and lot-specific purity documentation directly with the supplier. HS code: 29349990.
In printing inks and coatings, pyrene functions as a fluorescent colorant, absorbing UV light and re-emitting it as visible blue fluorescence, which enables optical brightening and tracer applications. It is also used in adhesive and sealant formulations as a fluorescent marker to verify coverage and detect defects during quality control processes.
Pyrene is supplied as a crystalline solid, typically at 98% purity grade. It falls under REACH regulation and requires an up-to-date Safety Data Sheet for procurement within the EU. Buyers should confirm packaging format and lot-specific purity documentation directly with the supplier. HS code: 29349990.
Physical Properties
| Melting Point | 151.2 °C |
| Boiling Point | 404 °C @ Press: 760 Torr |
| Density | 1.271 g/cm³ @ Temp: 23 °C |
| Flash Point | 210 °C |
| Appearance | Pyrene is a colorless crystalline solid when pure or pale yellow plates (impure). Polycyclic aromatic hydrocarbons (PAHs) are compounds containing multiple benzene rings and are also called polynuclear aromatic hydrocarbons. Solids and solutions have a Blue fluores- cence (Merck Index). |
| Color | Pale yellow to yellow-greenish |
| Form | crystalline |
| Water Solubility | almost insoluble |
| Vapor Pressure | 180 at 25 °C (extrapolated from vapor pressures determined at higher temperatures, Tesconi andYalkowsky, 1998) |
| Refractive Index | 1.8520 (estimate) |
| Log P | 5.43 at 30℃ and pH5-8 |
Safety & Handling (Learn More)
Warning GHS07 GHS09
H
H315H319H335H400H410
P
P261P264P271P273P280P319P321P391P405P501P264+P265P302+P352P304+P340P332+P317P337+P317P362+P364P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 29349990 |
| UN Number | 3077 |
| ADR Class | 9 |
| Packing Group | III |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 2 |
Other Names
PyrenPyenePTRENEPyrene>pyrene5Pyrenepractbeta-Pyrene
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