2,5-Diphenyloxazole Scintillation Grade
High-purity 2,5-Diphenyloxazole (PPO) specifically refined for nuclear spectroscopy applications, classified under HTS 2934.99.08.00. This aromatic oxazole derivative exhibits optimal fluorescence quantum yield when dissolved in toluene or pseudocumene scintillators. Used in environmental monitoring and medical isotope research.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If when packaged with radioactive isotopes as complete scintillator system
Radioactive preparations containing scintillator compounds classified in Chapter 28 based on numerical order priority.
If imported as 10% solution in toluene for immediate lab use
Prepared chemical mixtures for laboratory analysis take precedence over individual pure compounds.
If structurally reclassified as modified oxazole without aromatic priority
Certain heterocyclic derivatives without clear aromatic character fall under earlier 2932 heading.
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Import Tips & Compliance
• Require lot-specific HPLC chromatograms showing <0.1% impurities for research-grade verification
• Declare exact CAS number (92-71-7) and molecular formula (C15H11NO) on commercial invoice
• Obtain EPA TSCA certification if destined for US research facilities handling radiochemicals
Related Products under HTS 2934.99.08.00
2,5-Diphenyloxazole (PPO)
2,5-Diphenyloxazole is a fluorescent organic compound classified under HTS 2934.99.08.00 as an aromatic heterocyclic compound containing an oxazole ring with phenyl substituents. It is primarily used as a primary scintillator in liquid scintillation cocktails for detecting beta radiation in radiochemical analysis.
PPO (2,5-Diphenyloxazole) Research Chemical
Laboratory-grade 2,5-Diphenyloxazole imported for organic synthesis and fluorescence studies under HTS 2934.99.08.00. This compound serves as wavelength shifter in multi-component scintillator systems and precursor for custom fluorophores. Packaged in amber glass for light-sensitive applications.
2,5-Diphenyloxazole NMR Standard
Certified reference material of 2,5-Diphenyloxazole at 98% purity with NIST-traceable NMR spectrum, classified HTS 2934.99.08.00. Used for calibrating 1H and 13C NMR spectrometers in pharmaceutical QC labs. Provides characteristic aromatic proton signals at 7.9-8.1 ppm.
High-Purity PPO for Plastic Scintillators
Ultra-pure 2,5-Diphenyloxazole (PPO) dissolved at 2% in polystyrene for extruded plastic scintillator sheets, under HTS 2934.99.08.00 when imported as pure active ingredient. Essential for high-energy physics detectors and security screening systems. Provides 360nm emission peak matching PMT sensitivity.