Calcium nitrate

Calcium nitrate
picture of constituent ions
Names
Other names
Kalksalpeter, Norgessalpeter, nitrocalcite, Norwegian salpeter, lime nitrate
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.030.289 Edit this at Wikidata
EC Number
  • 233-332-1
RTECS number
  • EW2985000
UNII
UN number 1454
  • InChI=1S/Ca.2NO3/c;2*2-1(3)4/q+2;2*-1 checkY
    Key: ZCCIPPOKBCJFDN-UHFFFAOYSA-N checkY
  • InChI=1/Ca.2NO3/c;2*2-1(3)4/q+2;2*-1
    Key: ZCCIPPOKBCJFDN-UHFFFAOYAF
  • [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O
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 33.08 g/100g (anhydrous, 25 °C)[2]
Acidity (pKa) 6.0
-45.9·10−6 cm3/mol
Structure
cubic (anhydrous)
monoclinic (tetrahydrate)
Hazards
GHS labelling:
GHS03: OxidizingGHS05: CorrosiveGHS07: Exclamation mark
Danger
H272, H302, H315, H319
P210, P220, P221, P264, P270, P280, P301+P312, P302+P352, P305+P351+P338, P310, P321, P330, P332+P313, P337+P313, P362, P370+P378, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g. calciumSpecial hazard OX: Oxidizer. E.g. potassium perchlorate
2
0
1
OX
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
302 mg/kg (rat, oral)
Safety data sheet (SDS) ICSC 1037
Related compounds
Other anions
 Calcium sulfate
Calcium chloride
Other cations
 Magnesium nitrate
Strontium nitrate
Barium nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Calcium nitrate are inorganic compounds with the formula Ca(NO3)2(H2O)x. The anhydrous compound, which is rarely encountered, absorbs moisture from the air to give the tetrahydrate. Both anhydrous and hydrated forms are colourless salts. Hydrated calcium nitrate, also called Norgessalpeter (Norwegian salpeter), is mainly used as a component in fertilizers, but it has other applications. Nitrocalcite is the name for a mineral which is a hydrated calcium nitrate that forms as an efflorescence where manure contacts concrete or limestone in a dry environment as in stables or caverns. A variety of related salts are known including calcium ammonium nitrate decahydrate and calcium potassium nitrate decahydrate.[3]

  1. ^ a b Anatolievich, Kiper Ruslan. "Properties of substance: calcium nitrate". Retrieved 2015-09-09.
  2. ^ Norwitz, George; Chasan, David E. (1968-05-01). "Application of Infrared Spectroscopy to the Analysis of Inorganic Nitrates" (PDF). Defense Technical Information Centre. Retrieved 2023-01-21.{{cite journal}}: CS1 maint: date and year (link)
  3. ^ "Nitrates and Nitrites". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. 2002. doi:10.1002/14356007.a17_265. ISBN 978-3527306732.