Ammonium sulphite, Diammonium sulfite, Diammonium sulfonate, Sulfurous acid, Diammonium salt, Sulfurous acid, ammonium salt(1:2)
|Molar mass||116.14 g/mol|
|Melting point||65 °C (149 °F; 338 K) decomposes|
|35 g/100 mL
32.4g/100mL at 0 degrees Celsius
60.4g/100mL at 100 degrees Celsius
|Solubility||Insoluble in acetone and alcohol|
Refractive index (nD)
|EU Index||Not Listed|
|Flash point||Not Flamable|
|Ammonium hydroxide Ammonium thiosulfate Ammonium sulfate Ammonium bisulfate Ammonium persulfate|
|Sodium Sulfite Potassium Sulfite|
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
|what is: / ?)(|
- 2NH3 + SO2 + H2O → (NH4)2SO3
For cosmetics, ammonium sulfite is used as a hair straightening agent and a hair waving agent. Ammonium based hair products have been made to replace sodium hydroxide based products due to the destructive nature of sodium hydroxide on hair.
The most common food product with ammonium sulfite is caramel coloring. According to the FDA, caramel coloring contains ammonium, potassium, or sodium sulfite.
Ammonium sulfite is used as a reducing agent in photography. When film photographs are being developed ammonium sulfite can be one of the reducing agents used to develop the negative.
Ammonium sulfite can also be used in the making of bricks. The bricks made using ammonium sulfite are mainly used for blast furnace linings.
Ammonium sulfite can be included in lubricants for cold metal working. The lubricants are intended to reduce friction to keep heat production down and keep impurities out of the metals.
Ammonium sulfite has been used in gas scrubbers. The ammonium sulfite reacts with acidic air samples as a reducing agent. The Air is reduced to a more neutral pH which makes it less harmful to the environment.
Ammonium sulfite is a reducing agent. It emits sulfur dioxide and oxides of nitrogen upon heating to decomposition.
Ammonium sulfite can be dangerous to handle. Ammonium sulfite has a toxic effect on humans. It is very hazardous in case of ingestion, it has a sulfurous taste. Ammonium sulfite is also hazardous in case of skin contact and it will irritate any skin that comes into contact with. Inhalation is another route of entry for ammonium sulfite to enter in a dangerous manner. Ammonium suifite is also hazardous when it comes into contact with eyes. The LD50 has not been determined.
- Chemical Entity Data Page
- [Material Safety Data Sheet: Ammonium sulfite MSDS. http://www.sciencelab.com/msds.php?msdsId=9922932 (accessed Oct 19, 2011)]
- ["Ammonium Sulphite - PubChem Public Chemical Database." The PubChem Project. Web. 26 Oct. 2011. <http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?sid=167823>.]
- [Europe. European Commission. Health and Consumers. Cosmetics - CosIng [Cosmetics Directive (v.1)]. European Commission. Web. 26 Oct. 2011. <http://ec.europa.eu/consumers/cosmetics/cosing/index.cfm?fuseaction=search.details&id=31900>.]
- [United States. FDA. CFR - Code of Federal Regulations Title 21. Health and Human Servises. 1 Apr. 2011. Web. <http://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?FR=73.85>.]
- [O'Neil, Maryadele J. The Merck Index: an Encyclopedia of Chemicals, Drugs, and Biologicals. Whitehouse Station, NJ: Merck, 2001. 561. Print.]
- ["Stack gas cleanup by ammonia injection", Chem. Eng. News, 1972, 50 (37), pp. 54–56]
- ["Acid Plant Gas Scrubber", Chem. Eng. News, 1955, 33 (20), pp. 2148–2149]
- Chemical Book