Strontium sulfate

Crystal structure
	__ Sr 2+ __ S 6+ __ O 2−
General
Surname	Strontium sulfate
other names	Strontium (II) sulfate
Ratio formula	SrSO 4
Brief description	white solid
External identifiers / databases
EC number	231-850-2
ECHA InfoCard	100,028,955
PubChem	3084026
ChemSpider	2341151
Wikidata	Q414440
properties
Molar mass	183.68 g mol −1
Physical state	firmly
density	3.96 g cm −3
Melting point	1605 ° C (when heating quickly)
solubility	very bad in water (0.11 g / l at 30 ° C)
Refractive index	1.622
safety instructions
GHS labeling of hazardous substances	no GHS pictograms
	no GHS pictograms
H and P phrases	H: no H-phrases
	P: no P-phrases
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

Strontium sulfate is a chemical compound from the group of strontium compounds and sulfates .

Occurrence

Of course, strontium sulfate comes in the form of the mineral Celestine and the skeleton of radiolarians of species of Acantharia ago.

Extraction and presentation

Strontium sulfate can be produced by precipitating sulfates (such as sodium sulfate , calcium sulfate ) in strontium hydroxide or a strontium chloride solution.

{\ displaystyle \ mathrm {Sr (OH) _ {2} + Na_ {2} SO_ {4} \ rightarrow SrSO_ {4} \ downarrow +2 \ NaOH}}

properties

Strontium sulfate, microscopically, precipitated from strontium chloride using sulfuric acid

Strontium sulfate is a white, non-flammable solid. It decomposes at a temperature higher than 1580 ° C.

{\ displaystyle \ mathrm {SrSO_ {4} \ rightarrow SrO + SO_ {2} \ uparrow + \ O_ {2} \ uparrow}}

It has an orthorhombic crystal structure similar to that of barium sulfate (see Celestin).

use

Strontium sulfate is used in pyrotechnics (red flame color), analysis and as a pigment (strontium white). It is also used in the production of strontium (starting from the mineral) and other strontium compounds and is used as a component of ceramics.

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g entry to strontium sulfate in the GESTIS database of IFA , retrieved on December 22, 2019 (JavaScript required)
↑ Pradyot Patnaik: Handbook of Inorganic Chemicals. McGraw-Hill, 2003, ISBN 978-0-070-49439-8 , pp. 560-576 ( limited preview in Google book search).

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g entry to strontium sulfate in the GESTIS database of IFA , retrieved on December 22, 2019 (JavaScript required)

[2] Pradyot Patnaik: Handbook of Inorganic Chemicals. McGraw-Hill, 2003, ISBN 978-0-070-49439-8 , pp. 560-576 ( limited preview in Google book search).