S P E C I F I C A T I O N S

5-SULFOSALICYLIC ACID DIHYDRATE ACS

Synonyms:		Benzoic acid, 2-hydroxy-5-sulfo-, dihydrate; Salicylsulfonic Acid; 				3-Carboxy-4-Hydroxybenzene sulfonic acid

CAS No:				5965-83-3

Formula:				HOC6H3(COOH)SO3H * 2H20

F.W.:					254.22

Appearance				White crystalline powder

Assay					99.0 – 101.0 %

Water					16% maximum

Insoluble matter			0.02 % maximum

Residue after ignition		0.1 % maximum

Chloride (Cl)			0.001 % maximum

Salicylic acid			0.04 % maximum

Sulfate (SO4)				0.02 % maximum

Heavy Metals (as Pb)		0.002 % maximum

Iron (Fe)				0.001 % maximum

Effective: 12/16/08