Ammonium sulfamate

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Chemical structure

Ammonium sulfamate.jpg

Hygroscopic plate-like crystals that are used as a Flame retardant on textiles and Paper products. Ammonium sulfamate is also used as a weed killer and Fungicide and is effective for killing moss on Concrete.

Synonyms and Related Terms

sulfamic acid monoammonium salt; AMS; Amcide; Ammate [DuPont]; ammonium amidosulfonate; ammonium amidosulphate


  • Nonflammable.
  • Inhalation and contact cause irritation, burns, and allergic reactions.
  • LD50 = 3900 mg/kg. Decomposes at 160C.
  • Fisher Scientific: MSDS

Physical and Chemical Properties

Soluble in water, ammonium hydroxide. Slightly soluble in ethanol, glycerol, glycol formamide.

Composition NH4OSO2NH2
CAS 7773-06-0
Melting Point 130 C
Molecular Weight mol. wt. = 96.0789
Boiling Point 160 C (dec)

Resources and Citations

  • The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: Entry # 589
  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • G.Caneva, M.P.Nugari, O.Salvadori, Biology in the Conservation of Works of Art, ICCROM, Rome, 1991
  • Dictionary of Building Preservation, Ward Bucher, ed., John Wiley & Sons, Inc., New York City, 1996