Sodium 2-anthraquinonesulfonate

Sodium 2-anthraquinonesulfonate

IUPAC name Sodium 9,10-dioxo-9,10-dihydroanthracene-2-sulfonate
Other names Sodium 2-anthrachinonesulphonate; 2-Anthraquinone sodium sulfonate; Silver salt
Identifiers
CAS number	131-08-8^Y
PubChem	8551
Jmol-3D images	Image 1
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
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Not to be confused with soluble anthraquinone.

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

^ "Anthraquinone/ alkali pulping. A literature review" 7 1978 http://smartech.gatech.edu/bitstream/1853/673/1/3370_001_071978.pdf