Difference between revisions of "Ammonium sulfate"

Latest revision as of 14:37, 26 April 2022

Description

White or gray orthorhombic crystals that are used for flame proofing textiles and paper products, for tanning Leather, and for the manufacture of viscose Silk. Commercially, ammonium sulfate is also used as a fertilizer and as a reagent in water purification systems. Crystals of ammonium sulfate found in the bloom on painting varnishes and in a discolored area of a watercolor paper substrate may be due to Sulfur dioxide pollutants (Hatchfield 2002). In a closed environment, a saturated solution of ammonium sulfate will form an equilibrium at a relative humidity of about 81% (20C).

Synonyms and Related Terms

ammonium sulphate (Br.); svovlsur ammoniak (Dan.); Ammoniumsulfat (Deut., Sven.); diammonium sulfate; Actamaster; Dolamin; mascagnite

Chemical structure

Risks

Nonflammable. May corrode metals.

Harmful if swallowed. Contact may cause irritation.

Fisher Scientific: SDS

Physical and Chemical Properties

Soluble in water (pH=5.5 at 0.1 mol/L). Insoluble in ethanol, acetone.

Deliquescent point at 20C is 80.6 % RH (see saturated salt solutions)

Composition	(NH4)2SO4
CAS	7783-20-2
Melting Point	235-280 C (dec)
Density	1.77 g/ml
Molecular Weight	mol. wt. = 132.14

Resources and Citations

G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 58

Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993

Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979

Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002

Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997

The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 590

Wikipedia: http://en.wikipedia.org/wiki/Ammonium_sulfate (Accessed Jan. 25, 2006)

Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976

The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998

@@ Line 9: / Line 9: @@
 [[[SliderGallery rightalign|ammonium sulfate.jpg~Chemical structure]]]
-== Other Properties ==
+== Risks ==
+Nonflammable. May corrode metals.
+Harmful if swallowed.  Contact may cause irritation.
+Fisher Scientific: [https://beta-static.fishersci.com/content/dam/fishersci/en_US/documents/programs/education/regulatory-documents/sds/chemicals/chemicals-a/S25176A.pdf SDS]
+== Physical and Chemical Properties ==
 Soluble in water (pH=5.5 at 0.1 mol/L). Insoluble in ethanol, acetone.
@@ Line 24: / Line 32: @@
 |-
 ! scope="row"| Melting Point
-| 235-280 (dec)
+| 235-280 C (dec)
 |-
 ! scope="row"| Density
-| 1.77
+| 1.77 g/ml
 |-
 ! scope="row"| Molecular Weight
@@ Line 33: / Line 41: @@
 |}
-== Hazards and Safety ==
+== Resources and Citations ==
-Nonflammable. May corrode metals.
-Harmful if swallowed.  Contact may cause irritation.
-Mallinckrodt Baker: [http://www.jtbaker.com/msds/englishhtml/a6192.htm MSDS]
-== Additional Information ==
-° P.Hatchfield, ''Pollutants in the Museum Environment'', Archetype Press, London, 2002.
-== Sources Checked for Data in Record ==
 * G.S.Brady, ''Materials Handbook'', McGraw-Hill Book Co., New York, 1971  Comment: p. 58
@@ Line 59: / Line 55: @@
 * ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983  Comment: entry 590
-* Wikipedia, the free encyclopedia, at http://www.wikipedia.com  Comment: http://en.wikipedia.org/wiki/Ammonium_sulfate (Accessed Jan. 25, 2006)
+* Wikipedia: http://en.wikipedia.org/wiki/Ammonium_sulfate (Accessed Jan. 25, 2006)
 * ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976