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Niacinamide PYRIDINE-3-carboxamide CAS 98-92-0

Niacinamide PYRIDINE-3-carboxamide CAS 98-92-0
Add hydrochloric acid solution and dilute quantitatively. Measure at a wavelength of 261nm using UV visible spectrophotometry Identification chemical reaction Add sodium hydroxide test solution and ...

4-ISOPROPYL-3-Methylphenol O-CYMEN-5-ol Supplier CAS 3228-02-2 Jinan Huashihang Chemical Co.,Ltd

4-ISOPROPYL-3-Methylphenol O-CYMEN-5-ol Supplier CAS 3228-02-2 Jinan Huashihang Chemical Co.,Ltd
add 6 drops of sulfuric acid and 1 drop of nitric acid; a red-brown color develops. (3)add 5ml of a solution of sodium hydroxide (1→10) to 1g sample. And heat on a water bath. a colorless or light ...
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