Difference between revisions of "Potassium metabisulfite"

Latest revision as of 10:21, 25 August 2022

Description

White granules or powder with a pungent odor. Potassium metabisulfite is used as a Bleaching agent for Straw, Wood, textiles, and Paper. It is also used in photographic developing solutions.

Synonyms and Related Terms

potassium pyrosulfite; dipotassium disulfite

Chemical structure

Risks

ThermoFisher: SDS

Physical and Chemical Properties

Soluble in water. Insoluble in ethanol.
Oxidized in air to form potassium sulfate.

Composition	K2S2O5
CAS	16731-55-8
Melting Point	150-190 C (dec)
Density	2.3 g/ml
Molecular Weight	mol. wt. = 222.3

Resources and Citations

Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982

Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942

The Merck Index, Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996 Comment: entry 7811

@@ Line 1: / Line 1: @@
 == Description ==
-White granules or powder with a pungent odor. Potassium metabisulfite is used as a [http://cameo.mfa.org/materials/fullrecord.asp?name=bleaching agent bleaching agent] for [http://cameo.mfa.org/materials/fullrecord.asp?name=straw straw], [http://cameo.mfa.org/materials/fullrecord.asp?name=wood wood], [http://cameo.mfa.org/materials/fullrecord.asp?name=textile textiles], and [http://cameo.mfa.org/materials/fullrecord.asp?name=paper paper]. It is also used in photographic developing solutions.
+White granules or powder with a pungent odor. Potassium metabisulfite is used as a [[bleaching%20agent|bleaching agent]] for [[straw|straw]], [[wood|wood]], [[textile|textiles]], and [[paper|paper]]. It is also used in photographic developing solutions.
 == Synonyms and Related Terms ==
@@ Line 8: / Line 8: @@
 [[[SliderGallery rightalign|potassium metabisulfite.jpg~Chemical structure]]]
+==Risks==
+* ThermoFisher: [https://www.fishersci.com/store/msds?partNumber=P197500&productDescription=POTASSIUM+M+BISULFITE+CRT+500G&vendorId=VN00033897&countryCode=US&language=en SDS]
+==Physical and Chemical Properties==
-== Other Properties ==
+* Soluble in water. Insoluble in ethanol.
+* Oxidized in air to form potassium sulfate.
-Soluble in water. Insoluble in ethanol. Oxidized in air to form potassium sulfate.
 {| class="wikitable"
@@ Line 22: / Line 24: @@
 |-
 ! scope="row"| Melting Point
-| 150-190 (dec)
+| 150-190 C (dec)
 |-
 ! scope="row"| Density
-| 2.3
+| 2.3 g/ml
 |-
 ! scope="row"| Molecular Weight
@@ Line 31: / Line 33: @@
 |}
-== Hazards and Safety ==
+==Resources and Citations==
-[http://www.cdc.gov/niosh/ipcsneng/neng1175.html International Chemical Safety Card]
-== Authority ==
-* Matt Roberts, Don Etherington, Matt Roberts, Don Etherington, ''Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology'', U.S. Government Printing Office, Washington DC, 1982
+* Matt Roberts, Don Etherington, ''Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology'', U.S. Government Printing Office, Washington DC, 1982
-* Thomas Gregory, Thomas Gregory, ''The Condensed Chemical Dictionary'', Reinhold Publishing, New York, 3rd ed., 1942
+* Thomas Gregory, ''The Condensed Chemical Dictionary'', Reinhold Publishing, New York, 3rd ed., 1942
-* Susan Budavari (ed.), ''The Merck Index'', Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996  Comment: entry 7811
+* ''The Merck Index'', Susan Budavari (ed.), Merck Research Labs, Whitehouse Station, NJ, 12th Edition, 1996  Comment: entry 7811
 [[Category:Materials database]]