Strontium sulfate

Strontium sulfate[1]

Names
IUPAC name

Strontium sulfate

Other names

Celestine

Identifiers

CAS Number

* 7759-02-6 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 2341151 Y

EC Number |

* 231-850-2

PubChem CID

* 3084026

UNII |

* 7Q3KX2L47F N

InChI

* InChI=1S/H2O4S.Sr/c1-5(2,3)4;/h(H2,1,2,3,4);/q;+2/p-2 Y

Key: UBXAKNTVXQMEAG-UHFFFAOYSA-L Y

* InChI=1/H2O4S.Sr/c1-5(2,3)4;/h(H2,1,2,3,4);/q;+2/p-2

Key: UBXAKNTVXQMEAG-NUQVWONBAV

SMILES

* [Sr+2].[O-]S([O-])(=O)=O

Properties

Chemical formula

| SrSO4
Molar mass | 183.68 g/mol
Appearance  | white orthorhombic crystals
Density | 3.96 g/cm3
Melting point |  1,606 °C (2,923 °F; 1,879 K)

Solubility in water

| 0.0135 g/100 mL (25 °C)
0.014 g/100 mL (30 °C)

Solubility product (Ksp)

| 3.44 x 10−7
Solubility | insoluble in ethanol, alkalis
slightly soluble in acids

Magnetic susceptibility (χ)

| −57.9·10−6 cm3/mol

Refractive index (nD)

| 1.622[2]
Structure

Crystal structure

| Orthorhombic, oP24

Space group

| Pnma, No. 62[3]
Thermochemistry

Std molar
entropy (S ~~o~~ 298)

| 117.0 J·mol−1·K−1

Std enthalpy of
formation (ΔfH⦵298)

| -1453.1 kJ·mol−1
Hazards
Safety data sheet | External MSDS data
NFPA 704 (fire diamond)  |

Flash point | Not flammable
Related compounds

Other anions

| Strontium chloride
Strontium oxide

Other cations

| Beryllium sulfate
Magnesium sulfate
Calcium sulfate
Barium sulfate

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

N verify (what is YN ?)
Infobox references

Strontium sulfate (SrSO4) is the sulfate salt of strontium. It is a white crystalline powder and occurs in nature as the mineral celestine. It is poorly soluble in water to the extent of 1 part in 8,800. It is more soluble in dilute HCl and nitric acid and appreciably soluble in alkali chloride solutions (e.g. sodium chloride).

## Structure

Strontium sulfate is a polymeric material, isostructural with barium sulfate. Crystallized strontium sulfate is utilized by a small group of radiolarian protozoa, called the Acantharea, as a main constituent of their skeleton.

## Applications and chemistry

Strontium sulfate is of interest as a naturally occurring precursor to other strontium compounds, which are more useful. In industry it is converted to the carbonate for use as ceramic precursor and the nitrate for use in pyrotechnics.[4]

The low aqueous solubility of strontium sulfate can lead to scale formation in processes where these ions meet. For example, it can form on surfaces of equipment in underground oil wells depending on the groundwater conditions.[5][6]

## References

1. ↑ Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, FL: CRC Press. pp. 4–87; 1364. ISBN 0-8493-0594-2.
2. ↑ Patnaik, Pradyot (2003). Handbook of Inorganic Chemical Compounds. McGraw-Hill. pp. 560–576. ISBN 0-07-049439-8. https://books.google.com/books?id=Xqj-TTzkvTEC. Retrieved 2009-06-06.
3. ↑ Krystek, M. (1979). "Lattice Parameters of (BaxSr100-x)SO4 Doped with Europium". Physica Status Solidi A 54 (2): K133. doi:10.1002/pssa.2210540256. Bibcode: 1979PSSAR..54..133K.
4. ↑ J. Paul MacMillan, Jai Won Park, Rolf Gerstenberg, Heinz Wagner, Karl Köhler, Peter Wallbrecht “Strontium and Strontium Compounds” in Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH, Weinheim. doi:10.1002/14356007.a25_321.
5. ↑ Jacques, Donald F.; Bourland, Brent I. (1983). "A Study of Solubility of Strontium Sulfate". Society of Petroleum Engineers Journal 23 (2): 292–300. doi:10.2118/9625-PA. https://www.onepetro.org/journal-paper/SPE-9625-PA.
6. ↑ Dean, S. W.; Ezuber, Hosni M. (2007). "Prediction of Strontium Sulfate Scale Formation in Oilfield Environment". Journal of ASTM International 4 (6): 100958. doi:10.1520/JAI100958.

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Strontium compounds

* SrAl2O4
* SrB6
* SrBr2
* Sr(BrO3)2
* SrCO3
* SrCl2
* Sr(ClO3)2
* SrCrO4
* SrF2
* SrI2
* Sr(NO3)2
* SrO
* SrO2
* Sr(OH)2
* SrS
* SrSO4
* SrTiO3
* Sr3N2
* Sr2RuO4

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Compounds containing the sulfate group

H2SO4 |  |  |  | He

|
|
|
|

Li2SO4 | BeSO4 | B  | esters
ROSO3−
(RO)2SO2 | (NH4)2SO4
[N2H5]HSO4
(NH3OH)2SO4
NOHSO4 | HOSO4 | F  | Ne
Na2SO4
NaHSO4 | MgSO4 | Al2(SO4)3
Al2SO4(OAc)4 | Si  | P  | SO42−
HSO3HSO4
(HSO4)2 | Cl  | Ar
K2SO4
KHSO4 | CaSO4 | Sc2(SO4)3 | TiOSO4 | VSO4
V2(SO4)3
VOSO4 | CrSO4
Cr2(SO4)3 | MnSO4 | FeSO4
Fe2(SO4)3 | CoSO4 | NiSO4 | CuSO4
Cu2SO4
[Cu(NH3)4(H2O)]SO4 | ZnSO4 | Ga2(SO4)3 | Ge  | As  | Se  | Br  | Kr
RbHSO4
Rb2SO4 | SrSO4 | Y2(SO4)3 | Zr(SO4)2 | Nb  | Mo  | Tc  | Ru  | Rh2(SO4)3 | PdSO4 | Ag2SO4 | CdSO4 | In2(SO4)3 | SnSO4
Sn(SO4)2 | Sb2(SO4)3 | Te  | I  | Xe
Cs2SO4
CsHSO4 | BaSO4 |  | Hf  | Ta  | W  | Re  | Os  | Ir  | Pt  | AuSO4
Au2(SO4)3 | Hg2SO4
HgSO4 | Tl2SO4
Tl2(SO4)3 | PbSO4 | Bi2(SO4)3 | Po  | At  | Rn
Fr  | Ra  |  | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og
| ↓  |  |
La  | Ce2(SO4)3
Ce(SO4)2 | Pr2(SO4)3 | Nd  | Pm  | Sm  | Eu  | Gd  | Tb  | Dy  | Ho  | Er  | Tm  | Yb2(SO4)3 | Lu
Ac  | Th  | Pa  | U(SO4)2
UO2SO4 | Np  | Pu  | Am  | Cm  | Bk  | Cf  | Es  | Fm  | Md  | No  | Lr

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Sulfur compounds

* Al2S3
* As2S2
* As2S3
* As2S5
* As4S4
* Au2S
* Au2S3
* B2S3
* BaS
* BeS
* Bi2S3
* Br2S
* Br2S2
* CS2
* C3S2
* C6S6
* CaS
* CdS
* CeS
* SCl2
* S2Cl2
* CoS
* Cr2S3
* CuS
* D2S
* Dy2S3
* Er2S3
* EuS
* SF4
* S2F10
* SF6
* FeS2
* GaS
* H2S
* HfS2
* HgS
* InS
* I2S
* LaS
* LiS
* MgS
* MoS3
* NiS
* SO2
* SO3
* P4S7
* PbS
* PbS2
* PtS
* ReS2
* SrS
* TlS
* SV
* SeS2
* S2U
* WS2
* Sb2S3
* Sb2S5
* Sm2S3
* Y2S3
* Ag2SO4
* SOBr2
* CSTe
* C2H4S
* C2H6S3
* C4H4S
* CaSO4
* C32H66S2
* CuFeS2
* H2SO4
* H2SO3
* F2OS
* NaHS
* K2SO3
* O3S3Sb4
* Yb2(SO4)3
* AlKO8S2
* CHCl3S
* KSCN
* CdSO3
* PSCl3
* SOCl2
* Cs2O4S
* Re2S7
* Na2S
* K2S
* H2S2O7
* H2SO5
* NH5S
* HgSO4
* K2SO4
* RaSO4
* SnSO4
* SrSO4
* Zr(SO4)2
* Ti(SO4)2
* Tm2(SO4)3
* AlNa(SO4)2
* Er2(SO4)3
* Eu2(SO4)3
* CHNS
* Co(SCN)2
* C2H3SN
* PSI3
* ZrS2
* SiS
* CSSe

Chemical formulas

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