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 Number	131-08-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	8080408 ;
ECHA InfoCard	100.004.555
PubChem CID	9904754;
UNII	511H72SDVX ;
CompTox Dashboard (EPA)	DTXSID4044535 ;
	InChI InChI=1S/C14H8O5S.Na/c15-13-9-3-1-2-4-10(9)14(16)12-7-8(20(17,18)19)5-6-11(12)13;/h1-7H,(H,17,18,19);/q;+1/p-1 Key: GGCZERPQGJTIQP-UHFFFAOYSA-M ;
	SMILES O=C1C2=C(C=CC(S(=O)([O-])=O)=C2)C(C3=CC=CC=C31)=O.[Na+];
Properties
Chemical formula	C14H7NaO5S
Molar mass	310.25 g·mol−1
	Except where otherwise noted, data are 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. In the laboratory it could be prepared by sulfonation of anthraquinone.[1]

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,[2] but has a higher cost.

References

"Synthesis of sodium anthraquinone-2-sulfonate". PrepChem.com - Preparative chemistry procedures. Retrieved 2016-01-11.
"Anthraquinone/ alkali pulping. A literature review" (PDF). July 1978.

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[1] "Synthesis of sodium anthraquinone-2-sulfonate". PrepChem.com - Preparative chemistry procedures. Retrieved 2016-01-11.

[2] "Anthraquinone/ alkali pulping. A literature review" (PDF). July 1978.