5-Nitro-9,10-dioxo-9,10-dihydro-1-anthracenesulfonic acid(CAS: 82-50-8)

5-Nitro-9,10-dioxo-9,10-dihydro-1-anthracenesulfonic acid is a crystalline compound with a molecular weight of approximately 318.11 g/mol. It has a highly acidic nature with a pKa of about 2.5. The compound is slightly soluble in water, with a solubility of 0.05 g/100 mL. It is not reactive under normal conditions but can decompose at high temperatures. This compound exhibits strong acidity and is often used in analytical chemistry for its acid-base properties.

5-Nitro-9,10-dioxo-9,10-dihydro-1-anthracenesulfonic acid is typically synthesized by nitration of anthracene-9,10-dione followed by sulfonation. The process involves the treatment of anthracene-9,10-dione with nitric acid to form the nitro derivative, which is then sulfonated using sulfur trioxide (SO3) or sulfuryl chloride (SO2Cl2). The reaction proceeds under controlled conditions to achieve high yield and selectivity.

5-Nitro-9,10-dioxo-9,10-dihydro-1-anthracenesulfonic acid is used in the pharmaceutical industry for the synthesis of certain organic compounds. It is also employed in the production of sensors and semiconductors due to its acid properties and stability under specific conditions. Additionally, it finds applications in analytical chemistry for its reactivity with various compounds.

When handling 5-Nitro-9,10-dioxo-9,10-dihydro-1-anthracenesulfonic acid, it is essential to wear appropriate personal protective equipment (PPE) including gloves, lab coat, and safety glasses. The compound should be used in a well-ventilated area or a fume hood to avoid inhalation. Spills should be cleaned up immediately using appropriate absorbent materials and rinsed with water. It is advisable to consult the Safety Data Sheet (SDS) for detailed handling and disposal instructions.