Calcium nitrate
chemical compound
Calcium nitrate, also known as Norwegian saltpeter, is a chemical compound. Its chemical formula is Ca(NO3)2. It contains calcium and nitrate ions.
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| Names | ||
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| Other names
Kalksalpeter, nitrocalcite, Norwegian saltpeter, lime nitrate
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| Identifiers | ||
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3D model (JSmol)
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| ChemSpider | ||
| ECHA InfoCard | 100.030.289 | |
PubChem CID
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| UNII | ||
| UN number | 1454 | |
CompTox Dashboard (EPA)
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| Properties | ||
| Ca(NO3)2 | ||
| Molar mass | 164.088 g/mol (anhydrous) 236.15 g/mol (tetrahydrate) | |
| Appearance | colorless solid hygroscopic | |
| Density | 2.504 g/cm3 (anhydrous) 1.896 g/cm3 (tetrahydrate) | |
| Melting point | 561 °C (1,042 °F; 834 K) (anhydrous) 42.7 °C (109 °F; 316 K) (tetrahydrate) | |
| Boiling point | decomposes (anhydrous) 132 °C (270 °F; 405 K) (tetrahydrate) | |
| anhydrous: 1212 g/L (20 °C) 2710 g/L (40 °C) tetrahydrate: 1050 g/L (0 °C) 1290 g/L (20 °C) 3630 g/L (100 °C) | ||
| Solubility | soluble in ammonia almost insoluble in nitric acid | |
| Solubility in ethanol | 51.4 g/100 g (20 °C) 62.9 g/100 g (40 °C)[1] | |
| Solubility in methanol | 134 g/100 g (10 °C) 144 g/100 g (40 °C) 158 g/100 g (60 °C)[1] | |
| Solubility in acetone | 16.8 g/kg (20 °C)[1] | |
| Acidity (pKa) | 6.0 | |
| -45.9·10−6 cm3/mol | ||
| Structure | ||
| cubic (anhydrous) monoclinic (tetrahydrate) | ||
| Hazards | ||
| NFPA 704 |
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| R-phrases | R22, R41 | |
| Flash point | Non-flammable | |
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| Other anions | {{{value}}} | |
| Other cations | {{{value}}} | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | ||
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| Infobox references | ||
Properties
changeCalcium nitrate is a colorless solid. It is an oxidizing agent. It absorbs water from the air. It decomposes to make nitrogen dioxide and calcium oxide when heated.
Preparation
changeCalcium nitrate is made by reacting calcium hydroxide or calcium carbonate with nitric acid. It is made when nitric acid reacts with calcium phosphate. It can be made by reacting ammonium nitrate and calcium hydroxide.
Uses
changeCalcium nitrate is used in fertilizers to add nitrogen to the soil. It can be complexed with urea to make a different nitrogen fertilizer.
References
change- ↑ 1.0 1.1 1.2 Anatolievich, Kiper Ruslan. "Properties of substance: calcium nitrate". Archived from the original on 2015-06-24. Retrieved 2015-09-09.