physical property

InChI=1/2H3N.H2O4S/c;; 1-5(2,3)4/h2*1H3; (H2,1,2,3,4)

Appearance and Characteristics: White crystalline powder

Melting point: 230-280 ℃

Refractive index（

）：1.396

Relative density: 1.77g/cm3

Solubility: Dissolve 70.6g at 0 ℃. Dissolve 75.4g at 20 ℃. Dissolve 78g at 30 ℃. Dissolve 81g at 40 ℃.

chemical property

White crystalline powder, with an acidic aqueous solution. Insoluble in alcohols, acetone, and ammonia water. Has hygroscopicity and solidifies into blocks after absorbing moisture. Heating above 513 ℃ completely decomposes into ammonia, nitrogen, sulfur dioxide, and water. When it interacts with alkalis, it releases ammonia gas. Reacts with barium chloride solution to form barium sulfate precipitate. It can also cause protein salting out.