Naphthalenes

<p>4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid (4-AHNDS) is a hydroxyl group and nitrogen containing molecule. It is a reactive compound that can be used to extract anions from water. 4-AHNDS has been shown to react with sodium ions in the presence of water, forming a salt that is soluble in water. This chemical also reacts with organic molecules and forms stable complexes. The reaction mechanism of 4-AHNDS has been studied by kinetic analysis and surface methodology measurements.</p>

<p>2-Naphthol-6,8-disulfonic acid is a synthetic organic compound that was identified as an impurity in the glyphosate formulation, Roundup. 2-Naphthol-6,8-disulfonic acid has been shown to have good analytical properties and can be used for the analysis of glyphosate in wastewater samples. It is thermally stable with a melting point of about 220°C. The UV detection wavelength ranges from 220nm to 240nm and the chloride ion is detectable at concentrations greater than 0.1 ppm. 2-Naphthol-6,8-disulfonic acid can also be used for the analysis of fatty acids in plants and animals.</p>

<p>Disodium 8-amino-1,3,6-naphthalenetrisulfonate is a fluorescent sensor that can detect albumin in human serum. Disodium 8-amino-1,3,6-naphthalenetrisulfonate selectively detects the molecule albumin in blood with a sensitivity of approximately 1.5 nmol/L and a selectivity of nearly 100%. The fluorescent sensor consists of an immobilized nanometer sized molecule of 8-aminonaphthalene trisulfonic acid on hydrotalcite. The sensor has been shown to be selective for albumin and does not react with other serum proteins such as immunoglobulins or fibrinogen.</p>