Strontium carbonate

Strontium carbonate

Names
IUPAC name Strontium carbonate
Other names Strontianite
Identifiers
CAS Number	1633-05-2 Y
3D model (Jmol)	Interactive image
ChemSpider	14666 Y
ECHA InfoCard	100.015.131
EC Number	216-643-7
PubChem	15407
RTECS number	WK8305000
UNII	41YPU4MMCA Y
InChI InChI=1S/CH2O3.Sr/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 Y Key: LEDMRZGFZIAGGB-UHFFFAOYSA-L Y InChI=1/CH2O3.Sr/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2 Key: LEDMRZGFZIAGGB-NUQVWONBAS
SMILES [Sr+2].[O-]C([O-])=O
Properties
Chemical formula	SrCO3
Molar mass	147.63 g/mol
Appearance	White powder
Odor	Odorless
Density	3.74 g/cm3
Melting point	1,494 °C (2,721 °F; 1,767 K) (decomposes)
Solubility in water	0.0011 g/100 mL (18 °C) 0.065 g/100 mL (100 °C)
Solubility	soluble in ammonium chloride slightly soluble in ammonia
Magnetic susceptibility (χ)	−47.0·10−6 cm3/mol
Refractive index (nD)	1.518
Structure
Crystal structure	rhombic
Hazards
Safety data sheet	External MSDS data
NFPA 704	0 1 0
Flash point	Non-flammable
Related compounds
Other cations	Magnesium carbonate Calcium carbonate Barium carbonate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

Strontium carbonate (SrCO₃) is the carbonate salt of strontium that has the appearance of a white or grey powder. It occurs in nature as the mineral strontianite.

Strontium carbonate is a white, odorless, tasteless powder. Being a carbonate, it is a weak base and therefore is reactive with acids. It is otherwise stable and safe to work with. It is practically insoluble in water (1 part in 100,000). The solubility is increased significantly if the water is saturated with carbon dioxide, to 1 part in 1,000. It is soluble in dilute acids.

Other than the natural occurrence as a mineral, strontium carbonate is prepared synthetically in one of two manners. First of which is from naturally occurring celestine also known as strontium sulfate (SrSO₄) or by using soluble strontium salts by the reaction in solution with a soluble carbonate salt (usually sodium or ammonium carbonates). For example if sodium carbonate was used in solution with strontium nitrate:

Sr(NO₃)_2(aq) + Na₂CO_3(aq) → SrCO_3(s) + 2 NaNO_3(aq).

The most common use is as an inexpensive colorant in fireworks. Strontium and its salts emit a brilliant red color in flame. Unlike other strontium salts, the carbonate salt is generally preferred because of its cost and the fact that it is not hygroscopic. Its ability to neutralize acid is also very helpful in pyrotechnics. Another similar application is in road flares.

Strontium carbonate is used for electronic applications. It is used for manufacturing CTV to absorb electrons resulting from the cathode.

It is used in the preparation of iridescent glass, luminous paints, strontium oxide or strontium salts and in refining sugar and certain drugs.