2-Nitro-4-sulfobenzoic Acid
Title: 2-Nitro-4-sulfobenzoic Acid
CAS Registry Number: 552-23-8
Molecular Formula: C7H5NO7S
Molecular Weight: 247.18
Percent Composition: C 34.01%, H 2.04%, N 5.67%, O 45.31%, S 12.97%
Literature References: Prepn by sulfonation of o-nitrotoluene and oxidation of the resulting 2-nitro-4-toluenesulfonic acid with potassium permanganate: Hart, Am. Chem. J. 1, 352 (1879-80).
Properties: Needles from hydrochloric acid. Stable in air under ordinary conditions.
Use: Alkalimetric standard.

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