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Phenol red was used by Leonard Rowntree and John Geraghty in the phenolsulfonphthalein test to estimate the overall blood flow through the kidney in 1911. [9] It was the first test of kidney function and was used for almost a century but is now obsolete. The test is based on the fact that phenol red is excreted almost entirely in the urine.
Phenol is an organic compound appreciably soluble in water, with about 84.2 g dissolving in 1000 ml (0.895 M).Homogeneous mixtures of phenol and water at phenol to water mass ratios of ~2.6 and higher are possible.
Safety data sheet (SDS) External MSDS: ... 3,5-Dichlorophenol (3,5-DCP) is a chlorinated derivative of phenol with the molecular formula Cl 2 C 6 H 3 OH.
Safety data sheet (SDS) External MSDS: Related compounds Related phenols. ... It is a derivative of phenol and is an isomer of p-cresol and o-cresol. [3] Production
Light red powder Melting point: 89 °C (192 °F; 362 K) Hazards Safety data sheet (SDS) MSDS at Sigma Aldrich ... by the condensation reaction of phenol and ...
Chlorophenol red is an indicator dye that changes color from yellow to violet in the pH range 5.4 to 6.8. [2] The pH of a substance is determined by taking the negative logarithm of the Hydronium ion concentration and the indictor changes color due to the dissociation of H + ions. [ 3 ]
2,4-Dichlorophenol (2,4-DCP) is a chlorinated derivative of phenol with the molecular formula Cl 2 C 6 H 3 OH. It is a white solid that is mildly acidic (pK a = 7.9). It is produced on a large scale as a precursor to the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D). [4]
pH indicators: a graphic view. A pH indicator is a halochromic chemical compound added in small amounts to a solution so the pH (acidity or basicity) of the solution can be determined visually or spectroscopically by changes in absorption and/or emission properties. [1]