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HomeProduct name listStrontium sulfate

Strontium sulfate

Synonym(s):Celestite

  • CAS NO.:7759-02-6
  • Empirical Formula: O4SSr
  • Molecular Weight: 183.68
  • MDL number: MFCD00036274
  • EINECS: 231-850-2
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-31 13:32:20
Strontium sulfate Structural

What is Strontium sulfate?

Description

Strontium sulfate has the molecular formula of SrSO4 and the molecular weight of 183.6842 g/mol. It can be prepared by the reaction of sodium sulfate and strontium chloride:
Na2SO4+SrCl2?SrSO4+2NaCl
Strontium sulfate occurs in nature as “celestite” and is mined from its natural deposits. Also, the sulfate can be made by reacting strontium oxide, hydroxide, or carbonate with dilute hydrochloric acid:
SrO+H2SO4?SrSO4+H2O
SrCO3+H2SO4?SrSO4+CO2+H2O
No hydrates are known.Its hardness is 3.3 Mohs. It melts at 1608°C. Its solubility in water is 0.015 g/100 ml at 25°C and 0.014 g at 35°C. It is insoluble in ethanol and acetone, but slightly soluble in acids and alkalis. It is soluble in alkali chloride solutions. The heat of formation, △Hf, is –1453 kJ/mol with an entropy value, S0, of 117.0 J/mol K. Its Mohs Hardness is 3.0–3.5. A water solution has a pH of 7.5. Its specific gravity ranges from 3.8 to 4.0 g/cm3.Pure strontium sulfate precipitate consists of single crystals, about some tens of microns long, with distinctly visible growth steps. Crystals grown with polyvinyl sulfonate in stirred solutions show a striking change of habit: they are sponge-like structures, composed of minute crystallites, of size in the nanometer range. Crystallized strontium sulfate is utilized by a small group of protozoa as a main constituent of their skeleton. It is sometimes used to impart iridescence to glass and pottery glazes or used as a fining agent in crystal glass.
There is very little demand for this salt in industry. It is available in limited quantities commercially.

Chemical properties

Milky white powder

The Uses of Strontium sulfate

Strontium Sulfate combined with Bi-2212 creates a superconductor.

The Uses of Strontium sulfate

Widely applied in the manufacturing of Barium Salts, pigments, special glass, printing inks, paints, filler for textiles, linoleum, paper, rubber, base for color lakes, as pigment and white lead substitutes.

The Uses of Strontium sulfate

In ceramics, pyrotechnics.

Definition

strontium sulphate: A white solid,SrSO4; r.d. 3.96; m.p. 1605°C. It canbe made by dissolving strontiumoxide, hydroxide, or carbonate in sulphuricacid. It is used as a pigment inpaints and ceramic glazes and to providea red colour in fireworks.

Flammability and Explosibility

Non flammable

Properties of Strontium sulfate

Melting point: 1606 °C (lit.)
Density  3.96 g/mL at 25 °C (lit.)
RTECS  WT1210000
storage temp.  Inert atmosphere,Room Temperature
solubility  aqueous acid: slightly soluble(lit.)
form  powder
color  White
Water Solubility  Soluble in dilute hydrochloric acid and nitric acid . Slightly soluble in water < 0.01 g/L . Insoluble in ethanol and alkalis.
Merck  14,8848
Solubility Product Constant (Ksp) pKsp: 6.46
CAS DataBase Reference 7759-02-6(CAS DataBase Reference)
EPA Substance Registry System Sulfuric acid, strontium salt (1:1) (7759-02-6)

Safety information for Strontium sulfate

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H302:Acute toxicity,oral
H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Computed Descriptors for Strontium sulfate

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