Sodium 2-anthraquinonesulfonate

Sodium 2-anthraquinonesulfonate

Names
IUPAC name Sodium 9,10-dioxo-9,10-dihydroanthracene-2-sulfonate
Other names Sodium 2-anthrachinonesulphonate; 2-Anthraquinone sodium sulfonate; Silver salt
Identifiers
CAS Registry Number	131-08-8 Y
Jmol-3D images	Image
PubChem	8551
SMILES O=C1C2=C(C=CC(S(=O)([O-])=O)=C2)C(C3=CC=CC=C31)=O.[Na+]
Properties
Molecular formula	C14H7NaO5S
Molar mass	310.26 g·mol−1
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Sodium 2-anthraquinonesulfonate (AMS) is a water-soluble anthraquinone derivative.

Digester additive in papermaking

AMS is used as a catalyst in production of alkaline pulping in the soda process. It goes through a redox cycle similar to that of anthraquinone to give a catalytic effect. AMS was discovered as an efficient pulping catalyst before anthraquinone,^[1] but has a higher cost.

References