Salsalate is used to treat rheumatoid arthritis and osteoarthritis. It is in a class of medications known as non-steroidal anti-inflammatory drugs (NSAIDs) Specifications: 1) Characteristic: white crystalline powder 2) Identification: I.R. 3) Loss on drying: ≤0.5% 4) Residue on ignition: ≤0.1% 5) Chloride: ≤0.01% 6) Sulfate: ≤0.05% 7) Heavy metals: ≤0.001% 8) Dimethylaniline: ≤0.05% 9) Isopropyl, ethyl and methyl salicylate: <0.02%, <0.05%, <0.05% 10) Related substances (HPLC): a) Salicylic acid: ≤0.5% b) Trisalicylic acid: ≤2.5% 11) Organic volatile impurities: a) Assay (HPLC): 98.0-102%