Packaging
8-Hydroxyquinoline (8-HQ)
CAS 148-24-3
8-Hydroxyquinoline (also known as 8-Quinolinol, CAS 148-24-3) is a highly versatile organic crystalline compound comprising a phenol ring fused to a pyridine ring. With its strong metal-chelating ability, this chemical finds extensive usage across analytical chemistry, pharmaceutical intermediates, OLED materials and fine chemical manufacturing. At Palica Chem, we supply premium-grade 8-Hydroxyquinoline with assured purity and consistent bulk availability.
Physical and Chemical Properties
| CAS number | 148-24-3 |
|---|---|
| EC / EINECS number | 205-711-1 |
| HS code | 2933.49 — the six-digit heading; national tariff codes extend it |
| Synonyms | 8-Quinolinol, Oxine, 8-HQ |
| Molecular formula | C9H7NO |
| Molecular weight | 145.16 g/mol |
| Appearance | White to off-white crystalline powder |
| Melting point | 73–75 °C |
| Boiling point | 267 °C |
| pKa | ≈5.0 (quinolinium N–H+), ≈9.9 (phenolic –OH) |
| Solubility | Slightly soluble in water; soluble in ethanol, acetone, chloroform and benzene, and in dilute acids and alkalis |
These are literature values for the substance, not a lot specification. The certificate of analysis for the lot supplied carries the measured assay and impurity profile, and a safety data sheet is provided with every quotation.
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Free base, sulfate or copper chelate: choosing an 8-hydroxyquinoline form
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