A study of the reaction between diazotized 2-aminobenzenesulphonic acid and 8-amino-1-naphthol-3,6-disulphonic acid

Dlask, Vladimír

doi:10.1016/0143-7208(95)00001-v

Cited by 2 publications

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“…Due to the hydroxyl group of naphtalene at position 1 or 2 (1-naphthol and 2-naphthol), it is considered more toxic than naphthalene and other poylcyclic aromatic hydrocarbons, and it is more soluble and portable in aquifers . Naphthols are fluorescent organic solid compounds, soluble in alcohols, ethers, and chloroform, and due to the importance of naphthols as a component in synthesis of azo dyes and other products, − the research was focused on the thermodynamic data of the system naphthols/CO 2 .…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Data for Processing Naphthol with Supercritical Carbon Dioxide

et al. 2017

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The solubilities of 1-naphthol and 2-naphthol in CO2 have been investigated at the temperatures 313, 333, and 353 K in the pressure range from 10 to 60 MPa. The melting points in the presence of CO2 have been determined at pressures from 10 to 60 MPa. The densities of the systems 1-naphthol/CO2 and 2-naphthol/CO2 were determined at temperatures of 313, 333, and 353 K and at pressures up to 40 MPa by a densitometer. The solubility decreases with increasing temperature above the pressure of 20 MPa and has a maximum. The melting points of naphthols decrease with increasing pressure to a melting point minimal temperature at pressure 20 MPa. The density of the naphthols/CO2 solution can differ from the density of the pure CO2 (below the critical point also by 100% or more).

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