Ammonium malate
| Names | |
|---|---|
| IUPAC name Diammonium malate | |
| Other names Ammonium hydroxybutanedioate; E349 | |
| Identifiers | |
CAS Number |
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| ChemSpider |
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| ECHA InfoCard | 100.025.909  |
| EC Number |
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| E number | E349 (antioxidants, ...) |
PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
Chemical formula | C4H9NO5 |
| Molar mass | 151.118 g·mol−1 |
| Appearance | white solid |
| Density | 1.498 g/cm3 (monohydrate) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).  N verify (what is  Y N ?) Infobox references | |
Chemical compound
Ammonium malate refers to organic compounds containing malate and ammonium. Two stoichiometries are discussed: NH4H(C2H3OH(CO2)2) with one ammonium ion per formula unit, and (NH4)2(C2H3OH(CO2)2). Malate, the conjugate base of malic acid, is chiral. Consequently a variety of salts are possible, R vs S vs racemic. The monoammonium salt has been crystallized as the monohydrate.[1]
As a food additive, diammonium malate has been used as flavoring agent and as an acidity regulator.[2] It has the E number E349.[2]
References
- ^ Anandha Babu, G.; Bhagavannarayana, G.; Ramasamy, P. (2008). "Synthesis, crystal growth, structural, optical, thermal and mechanical properties of novel organic NLO material: Ammonium malate". Journal of Crystal Growth. 310 (6): 1228–1238. Bibcode:2008JCrGr.310.1228A. doi:10.1016/j.jcrysgro.2007.12.024.
- ^ a b "Class Names and the International Numbering System for Food Additive" (PDF). Food and Agriculture Organization of the United Nations.
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Ammonium salts
| monatomic anions |
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| oxyanions |
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| other anions |
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- Aluminon
- Ammonium acetate
- Ammonium adipate
- Ammonium benzoate
- Ammonium bituminosulfonate
- Ammonium carbamate
- Ammonium citrate
- Ammonium diethyl dithiophosphate
- Ammonium ferric citrate
- Ammonium formate
- Ammonium fumarate
- Ammonium glutamate
- Ammonium lactate
- Ammonium lauryl sulfate
- Ammonium malate
- Ammonium nonanoate
- Ammonium oxalate
- Ammonium picrate
- Ammonium perfluorononanoate
- Ammonium propionate
- Ammonium thioglycolate
- Cupferron
- Ferric ammonium oxalate
- Murexide
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