1633-05-2

Basic information

• Product Name: Strontium carbonate
• Synonyms: Strontium carbonate (SrCO₃);Strontianite;NSC 112224;HSDB 5845;Carbonic acid strontium salt (1:1);CI 77837;CCRIS 3203;C.I. 77837
• CAS NO: 1633-05-2
• Molecular Formula: CO₃*Sr
• Molecular Weight: 147.6289
• EINECS: 216-643-7
• Mol File: 1633-05-2.mol
• Article Data: 64

Chemical Properties

• Melting Point: 1497℃
• Boiling Point: 333.6 °C at 760 mmHg
• Flash Point: 169.8 °C
• Appearance: Milky white free flowing powder
• Density: 3.7 g/mL at 25 °C(lit.)
• Vapor Pressure: 2.58E-05mmHg at 25°C
• CAS DataBase Reference: Strontium carbonate(CAS DataBase Reference)
• NIST Chemistry Reference: Strontium carbonate(1633-05-2)
• EPA Substance Registry System: Strontium carbonate(1633-05-2)

Safety Data

• Hazardous Substances Data: 1633-05-2(Hazardous Substances Data)

Usage

General Description

Strontium carbonate is a chemical compound composed of strontium, carbon, and oxygen with the chemical formula SrCO3. It is a white, odorless, and tasteless powder that is insoluble in water and alcohol. Strontium carbonate is commonly used in the production of fireworks as a colorant to create a deep red flame. It is also used in the manufacturing of glass and ceramics as a flux for lowering the melting point and increasing the strength and durability of the final product. Additionally, strontium carbonate has applications in the production of ferrite magnets and the treatment of strontium deficiency in the human body. Due to its potentially harmful effects on human health and the environment, strontium carbonate should be handled and disposed of with care according to proper safety measures.

InChI:InChI=1/CH2O3.Sr/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2

Upstream product

• 1333-84-2 aluminum oxide 
• 497-19-8 sodium carbonate 
• 124-38-9 carbon dioxide 
• 32248-43-4 samarium diiodide 
• 10476-86-5 strontium(II) iodide 
• 12210-91-2 Sr⁽²⁺⁾*S₄^(2-)=SrS₄ 
• 592-89-2 strontium formate 
• 121831-99-0 strontium(II) 
• 3812-32-6 carbonate^(2-) 
• 463-79-6 carbonic-acid 

Downstream Products

• 124-38-9 carbon dioxide 
• 7664-41-7 ammonia 
• 7732-18-5 water 
• 10476-85-4 strontium chloride 
• 13451-05-3 strontium tungstate 

Relevant articles and documents

Hydrogen Bonding in Amorphous Alkaline Earth Carbonates

Amorphous intermediates play a crucial role during the crystallization of alkaline earth carbonates. We synthesized amorphous carbonates of magnesium, calcium, strontium, and barium from methanolic solution. The local environment of water and the strength of hydrogen bonding in these hydrated modifications were probed with Fourier transform IR spectroscopy, 1H NMR spectroscopy, and heteronuclear correlation experiments. Temperature-dependent spin-lattice (T1) relaxation experiments provided information about the water motion in the amorphous materials. The Pearson hardness of the respective divalent metal cation predominantly determines the strength of the internal hydrogen-bonding network. Amorphous magnesium carbonate deviates from the remaining carbonates, as it contains additional hydroxide ions, which act as strong hydrogen-bond acceptors. Amorphous calcium carbonate exhibits the weakest hydrogen bonds of all alkaline earth carbonates. Our study provides a coherent picture of the hydrogen bonding situation in these transient species and thereby contributes to a deeper understanding of the crystallization process of carbonates.

Synthesis and characterization of strontium carbonate nanowires with a axis orientation and dendritic nanocrystals

Strontium carbonate nanowires that grow along the a axis were synthesized in large scale through simple hydrothermal approach for the first time. The aspect ratio of the product is more than 1000. Dendritic nanocrystals were also generated at low temperatures. Moreover, this method is feasible to be applied in the synthesis of barium carbonate nanowires.

Electrical characterization of strontium tartrate single crystals

The a.c. and d.c. conductivity of SrC4H4O 6·3H2O are measured and are found to lie between usual conductivities of semiconductor and insulator. Temperature dependence of d.c. conductivity shows intrinsic conduction, which is confirmed by the slope of lnσ versus lnf data. Due to application of thermal energy, noticeable conductivity peaks imply liberation of water molecules during dehydration and the formation of strontium oxalate. The conductivity plot has a nature similar to the intrinsic-to-extrinsic transition found in normal semiconductors. There occurs Efros hopping conduction in our samples.

Single-step synthesis of SrMoO4 particles from SrSO4 and their anti-corrosive activity

The transformation of three different sizes (4 mineral powder into SrMoO4 scheelite-type tetragonal particles was investigated via conventional hydrothermal treatments under both static and stirring conditions (20 rpm) at 100-250 °C and varying reaction intervals (0.08-48 h) in alkaline solutions saturated with MoO42-. A partial SrSO4 transformation was found to proceed in mild to concentrated alkaline NaOH solutions (0.1-2.5 M), the complete transformation of SrSO4 to SrMoO4 was observed to proceed at temperatures lower than 200 °C over 48 h in a static 5 M NaOH solution, but this process was accelerated when the autoclave was stirred at 20 rpm during the treatment, which led to the production of uncontaminated SrMoO4 particles at 200 °C within 6 h. The resultant SrMoO4 particles had octahedral bipyramidal morphology and particle sizes between 1 and 5 μm; these particles exhibited a noticeable agglomeration at the intermediate and final stages of the reaction due to the formation of agglomerates with an average size of 60 μm. However, stirring of the mixture in the autoclave markedly reduced the growth of the bulky agglomerations of SrMoO4 particles. A coupled process involving the bulk dissolution of the SrSO4 powder and, subsequently, the massive precipitation of SrMoO4 in an alkaline solution (5 M NaOH) saturated with MoO42- ions was utilised to crystallise the SrMoO4 particles. Kinetic studies demonstrated that the activation energy required for the formation of the octahedral shaped SrMoO4 particles was 25.8 kJ mol-1 in the system without agitation; in contrast, the activation energy decreased to 12.8 kJ mol-1 when the transformation was stirred. In a subsequent investigation, the ionic permeability resistance of a commercial paint applied to a AISI 1020 steel substrate was improved by adding a 2.0 wt.% of the transformed SrMoO4 particles to the paint.

Solvothermal synthesis of fusiform hexagonal prism SrCO3 microrods via ethylene glycol solution

Fusiform hexagonal prism SrCO3 microrods were prepared by a simple solvothermal route at 120 °C, and characterized by X-ray powder diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) and Fourier transform infrared (FT-IR) spectroscopy. By controlling the content of ethylene glycol (EG), it was found that ethylene glycol (EG) played an important role in the formation of such SrCO3 microrods. Finally, effects of other solvents on the products, including 1,2-propanediol and glycerin, were also investigated.

Heat capacity and thermal expansion coefficient of SrCeO3(s) and Sr2CeO4(s)

SrCeO3(s) and Sr2CeO4(s) were synthesized by citrate-nitrate gel combustion and solid state methods, respectively. Heat capacity of SrCeO3(s) and Sr2CeO4(s) were measured in high pure oxygen atmosphere by differential scanning calorimetry in the temperature range of 300-870 K. Enthalpy, entropy and Gibbs energy functions were computed from the heat capacity data for SrCeO3 and Sr 2CeO4(s) in the temperature range of 298-870 K and 298-600 K respectively. Thermal expansion measurements of these compounds were carried out in the temperature range of 298-1273 K by high temperature X-ray powder diffractometry. The average value of coefficient of volume expansion for SrCeO3 and Sr2CeO4(s) were calculated in the temperature range of 298-1273 K to be (10.79 ± 2.31) and (23.22 ± 5.19) × 10-6 K-1, respectively.

Mechanical and thermal carbonation of strontium ferrite SrFeOx

Reaction of non-stoichiometric SrFeOx (2.5 ≤ x ≤ 3.0) with carbon dioxide induced by high temperature and mechanical energy was investigated. The high-temperature reaction route was found to convert SrFeOx to a mixture of SrFe12O19 and SrCO3 at temperatures below 1128 K under 0.98 atm of CO2 pressure. The mechanical reaction carried out at room temperature causes a complete decomposition of SrFeOx to strontium carbonate and hematite via a metastable ferric carbonate phase. We examined the phase transformations, the reaction kinetics and morphology of carbonated SrFeOx and compared the two processes.

Electrochemical study of cathodic electroprecipitation of strontium hydroxide films from dimethyl sulfoxide-based solvents

Films of strontium hydroxide and related compounds have been galvanostatically electrodeposited on silver tapes in organic Sr(II) nitrate and chloride solutions using dimethyl sulfoxide (DMSO) because of its high dissolving power and some water as the hydroxide ion precursor. The influence of the nature of the solvent, electrolyte concentrations, and current applied during deposition on film microstructure and composition have been investigated by means of voltammetry, chronoamperometry, and ex situ spectroscopic methods: X-ray diffraction, scanning electron microscopy, electron microprobe analysis, and inductively coupled plasma spectrophotometry. Films were found to be crystalline after formation at ambient temperature whatever the conditions. Optimal current ranges were determined for each electrolyte/solvent couple in terms of adherence and homogeneity of the precursor. The electroprecipitation mechanism has been completed in pure DMSO by a subsequent chemical reaction between strontium hydroxide and atmospheric CO2 giving rise to crystallized strontium carbonate. In acetonitrile + DMSO mixtures, the chloride phase SrCl2 · 2H2O has also been identified as coprecipitated with Sr(OH)2 because of the low solubility of the electrolyte in pure acetonitrile.

Preparation, crystal structure, thermal decomposition mechanism and thermodynamical properties of [Yb(NTO)3(H2O)4]·6H2O and [Sr(NTO)2(H2O)4]·2H2O

[Yb(NTO)3(H2O)4]·6H2O was prepared by mixing the aqueous solution of lithium 3-nitro-1, 2, 4-triazol-5-onate and the dilute nitric acid solution of ytterbium oxide. The single crystal structure was determined by a four-circle X-ray diffractometer. The crystal is monoclinic, space group C2/c with crystal parameters of a = 3.6931 (5)nm, b = 0.6683(10) nm, c = 2.5656(3) nm, β = 130.974(5)°, V = 4.7811(11) nm3, Z = 8, μ = 40.17 cm-1, F(000) = 2850, Dc = 2.013 g cm-2, and λ(MoKα) = 0.071073 nm. The final R is 0.0258. [Sr(NTO)2(H2O)4]·2H2O was prepared by mixing the aqueous solution of 3-nitro-1, 2, 4-triazol-5-one and the excessive strontium carbonate. The single crystal structure was determined by a four-circle X-ray diffractometer. The crystal is monoclinic, space group P21/c with crystal parameters of a = 1.1034(1) nm; b = 2.2742(2) nm, c = 0.63398(9) nm, β = 101.798(13)°, V = 1.5573(4) nm3, Z = 4, Dc = 1.936 g cm-3, μ = 35.45 cm-1, F(000) = 912, λ(MoKα) = 0.071073 nm. The final R is 0.0347. Based on the results of thermal analysis, the thermal decomposition mechanism of [Yb(NTO)3(H2O)4]·6H2O and [Sr(NTO)2(H2O)4]·2H2O were derived. From measurements of the enthalpy of solution of [Yb(NTO)3(H2O)4]·6H2O and [Sr(NTO)2(H2O)4]·2H2O in water at 298.15 K, the standard enthalpy of formation, lattice energy, lattice enthalpy and standard enthalpy of dehydration have been determined as -(3853.3 ± 6.8) and -(2545.2 ± 4.7), -4596 and -2114, -4631 and -2136, 391 and 67.2 kJ mol-1, respectively.

Electrodeposition of oriented SrCO3 coatings on stainless steel substrates

Cathodic reduction of a strontium bicarbonate bath stabilized by a variety of amine-carboxylic acids as ligands resulted in the deposition of micrometers-thick SrC O3 coatings by electrogeneration of base. The use of diethylenetriaminepentaacetic acid (DTPA) yielded SrC O3 coatings with a distinct c -axis orientation. The degree of orientation is higher in thick rather than thin coatings. The degree of orientation is also reduced when the DTPA concentration is increased or the pH is increased. These observations suggest that oriented crystal growth is due neither to the template effect of the substrate nor any additive mediated interaction due to DTPA but is solely due to the kinetics of crystallization. The Sr[DTPA] complex has the highest stability constant among the ligands studied, indicating the low degree of supersaturation in this bath compared to those stabilized by other complexing agents. SrC O3 deposition is a good model for the study of aragonite CaC O3 deposition by virtue of being isostructural with the latter and having the smallest lattice mismatch with aragonite among the heavier metal carbonates.

Thermal investigation of strontium acetate hemihydrate in nitrogen gas

The thermal decomposition of strontium acetate hemihydrate has been studied by TG-DTA/DSC and TG coupled with Fourier transform infrared spectroscopy (FTIR) under non-isothermal conditions in nitrogen gas from ambient temperature to 600°C. The TG-DTA/DSC experiments indicate the decomposition goes mainly through two steps: the dehydration and the subsequent decomposition of anhydrous strontium acetate into strontium carbonate. TG-FTIR analysis of the evolved products from the non-oxidative thermal degradation indicates mainly the release of water, acetone and carbon dioxide. The model-free isoconversional methods are employed to calculate the E a of both steps at different conversion α from 0.1 to 0.9 with increment of 0.05. The relative constant apparent E a values during dehydration (0.5α0.9) of strontium acetate hemihydrate and decomposition of anhydrous strontium acetate (0.5α0.9) suggest that the simplex reactions involved in the corresponding thermal events. The most probable kinetic models during dehydration and decomposition have been estimated by means of the master plots method.

Preparation and characterization of monodispersed YSZ nanocrystals

A novel method for large-scale preparation of yttria-stabilized zirconia (YSZ) nanocrystals is presented. The hydrous YSZ colloidal nanoparticles are self-assembled on the surface of SrCO3 nanoparticles by a sonochemical method. After calcination, fully crystalline monodispersed YSZ nanoparticles are obtained, and the SrCO3 is washed out by 10% HNO3 solution. The agglomeration of YSZ particles is inhibited as the crystallization occurs on the surface and interface of SrCO3 nanoparticles. The nanocrystals are monodispersed with an average particle size of 4.7 nm and a high surface area of 165 m2/g. The quantum confinement effect is observed: the band gap increases from 4.13 eV for the agglomerated sample to 5.44 eV for the monodispersed YSZ nanocrystals.

Preparation and formation mechanism of three-dimensionally ordered macroporous (3DOM) MgO, MgSO4, CaCO3, and SrCO 3, and photonic stop band properties of 3DOM CaCO3

Three-dimensionally ordered macroporous (3DOM) magnesium (Mg) oxide (MgO), MgSO4, calcium (Ca) carbonate (CaCO3), and strontium (Sr) carbonate (SrCO3) were prepared using a colloidal crystal of polymer spheres as a template. Ethanol or ethanol-water solution of metal salts (acetate or nitrate) and citric acid was infiltrated into the void of the colloidal crystal template of a monodispersed poly(methyl methacrylate) (PMMA) sphere. Heating of this PMMA-metal salt-citric acid composite produced the desired well-ordered 3DOM materials with a high pore fraction, which was confirmed by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and ultraviolet-visible (UV-vis) diffuse reflectance spectra. The presence of citric acid is crucial for production of the 3DOM structures. Reaction of citric acid with metal salt produces metal citrate solid in the void of PMMA spheres, which is necessary to maintain the 3DOM structure during the calcination process. 3DOM CaCO3 shows opalescent colors because of it's photonic stop band properties.

Strontium ferrite nanoparticles synthesized in presence of polyvinylalcohol: Phase composition, microstructural and magnetic properties

Systematic study was devoted to the synthesis of hexagonal strontium ferrite nanoparticles employing polyvinylalcohol as stabilizing agent. Preliminary experiments allowed to select an optimal sol having molar ratio Sr2 + / Fe3 + = 12, weight ratio PVA / [Sr2 + + Fe3 +] = 1.4 and pH = 2.1. The obtained sol were transformed to gels by an evaporation of water at 100 °C and drying at 112 °C under vacuum. The subsequent calcination was carried out for 3 h at 400 °C, achieved by heating rate of 17 K/min. The obtained precursor was used for a detail study of influence of annealing conditions (temperature range 600-700 °C, annealing time 10-190 min) on the resulting properties. Semiquantitative X-ray phase analysis approved a gradual increase of the M-phase content and a gradual growth of M-phase crystallites with temperature and time. Magnetic measurements showed a distinct influence of the phase composition, namely ratio of the contents of M-phase and maghemite on the shape of the magnetic loops, while the crystallite sizes have only a slight effect.

Dry mechanochemical conversion of SrSO4 to SrCO3

The effect of milling time on the dry conversion of celestite, SrSO4, to SrCO3 using sodium carbonate in a planetary type ball mill was investigated. After milling, the powders were leached in distilled water at room temperature and the solids then washed with 1 N HCl to separate the products. X-Ray diffraction analysis showed that SrSO4 started to transform to SrCO3 within 10 min of milling and the extent of conversion increased with milling time reaching >90% after 30 min. A 3 was obtained in 30 min by increasing the molar ratio of Na2CO3:SrSO4 to 1.3:1.

An easy method to prepare nanowire

SrCO3 nanowires and BaCO3 nanowires with single crystal structure and aspect ratio of about 1000 were prepared by a simple reaction without template. Preferentially assembling-reconstruction of colloidal particles was supposed as the formation mechanism.

Hydrogen separation using proton-conducting perovskites

Two methods of hydrogen separation using proton-conducting perovskites, electrochemical hydrogen pumping with proton-conducting electrolytes and hydrogen sieving through protonic-electronic mixed conductors, are stated. In the former case, high temperature proton conductors (HTPCs) enable the hydrogen transport by external application of electricity. In the latter case, it is a fundamental concern how the protonic and electronic charge carriers coexist in oxides to allow hydrogen permeation. Experimental results and the problems for future investigations are discussed.

Hydrogen permeation and chemical stability of In-doped SrCe 0.95Tm0.05O3-δ membranes

A series of SrCe0.95-xIn xTm0.05O3-δ (x = 0.00, 0.05, 0.10, 0.15, 0.20) samples were prepared by the sol-gel technique using ethylenediaminetetraacetic acid and citric acid as the complexing agents. The X-ray diffraction (XRD) measurements were carried out to study the formation of SrCe0.75In0.20Tm0.05O3 -δ oxide. The results indicate that In can dissolve in the orthorhombic lattice of strontium cerate to form a solid solution at 1300 °C. The effects of In doping on the sinterability, chemical stability and hydrogen permeation flux of SrCe0.95Tm0.05O 3-δ oxides were investigated by a variety of characterization methods. According to the results of XRD and scanning electron microscopy (SEM), increasing In content in the oxides causes lattice constriction and promotes grain growth during sintering process at 1300°C. The relative density and morphology variation of the sintered membranes reveals that In doping improves the sintering activity of SrCe0.95Tm 0.05O3-δ membrane. The stability test shows that the stability of strontium cerate against CO 2 increases with the increasing In content. Hydrogen permeation through the SrCe0.95-xInxTm 0.05O3-δ membranes was carried out between 700 and 900°C using 40% H2/He mixture as feed gas and Ar as sweep gas, respectively. The H2 permeation flux decreases with the increase of the In content. Activation energies of SrCe 0.95Tm0.05O3-δ, SrCe0.85In0.10Tm0.05O3 -δ and SrCe0.75In0.20Tm 0.05O3-δ are 36.61, 52.25 and 73.06 kJ/mol, respectively.

Two three-dimensional metal-organic frameworks constructed from alkaline earth metal cations (Sr and Ba) and 5-nitroisophthalicacid - Synthesis, charaterization, and thermochemistry

Two MOFs of [SrII(5-NO2-BDC)(H2O) 6] (1) and [BaII(5-NO2-BDC)(H 2O)6] (2) have been synthesized in water using alkaline earth metal salts and the rigid organic ligand

A novel spray-pyrolysis technique to produce nanocrystalline lanthanum strontium manganite powder

Nanocrystalline, single phase, and highly homogeneous La 0.84Sr0.16MnO3 (LSM) powder was prepared by a unique spray-pyrolysis process for solid oxide fuel cell applications. Atomization of a citrate-nitrate precursor solution consisting of La 3+, Sr2+, and Mn2+ ions in the molar ratio 0.84:0.16:1.0, which can initiate a controlled exothermic anionic oxidation-reduction reaction leading to a self-propagating auto-ignition (self-ignition) reaction within individual droplets led to the conversion of the precursor to their corresponding single-phase LSM powder. Characterization of the as-sprayed and calcined products by X-ray powder diffraction, thermal analysis, and microstructural analysis confirmed the formation of nanocrystalline single-phase LSM powder by this process.

Tetrahedrally Coordinated sp3-Hybridized Carbon in Sr2CO4Orthocarbonate at Ambient Conditions

We have synthesized the orthocarbonate Sr2CO4, in which carbon is tetrahedrally coordinated by four oxygen atoms, at moderately high pressures [20(1) GPa] and high temperatures (≈3500 K) in a diamond anvil cell by reacting a SrCO3 single crystal with SrO powder. We show by synchrotron powder X-ray diffraction, Raman spectroscopy, and density functional thoery calculations that this phase, and hence sp3-hybridized carbon in a CO44- group, can be recovered at ambient conditions. The C-O bond distances are all of similar lengths [≈1.41(1) ?], and the O-C-O angles deviate from the ideal tetrahedral angle by a few degrees only.