1314-11-0 Usage
Physical Properties
Grayish-white porous mass; cubic crystalline structure; refractive index 1.810; vaporizes above 3,000°C; reacts with water forming strontium hydroxide, Sr(OH)2 with evolution of heat; miscible with fused caustic potash; slightly soluble in alcohol; insoluble in acetone and ether.
Uses
Different sources of media describe the Uses of 1314-11-0 differently. You can refer to the following data:
1. Strontium oxide is an alkaline earth flux that melts at 4406°F(2430°C), but the substance begins its fluxing action above 1994°F(1090°C). Strontium oxide's properties are difficult to describe, so it's often compared to other alkaline earth oxides like calcium and barium oxides. It has similarities to both. Strontium oxide has fluxing properties and a strong color response like barium oxide, although not as intense. It adds strength and durability to a glaze like calcium oxide and it melts very slowly, thus increasing the melting range of a glaze.
Strontium oxide is often substituted for toxic barium oxide. A typical substitution is 0.75 grams of Strontium carbonate for 1 gram barium carbonate; keep in mind that it won't produce the same color response as barium oxide.
Strontium has a moderate viscosity and surface tension and a moderate to high expansion and contraction rate that's similar to calcium oxide.It's not volatile at ceramic temperatures, is slightly soluble,and has no known toxicity.
A slightly soluble source of strontium oxide is strontium carbonate, which usually contains some CaO.
2. SrO is also used in medicine, pyrotechnics, pigments, greases, soaps, and as a chemical intermediate. It is also produced as high-purity strontium oxide rotatable sputtering targets with the highest possible density and smallest possible average grain sizes for use in semiconductor, photovoltaic, and coating applications by chemical vapor deposition and physical vapor deposition and optical applications.One of the reasons why rare metals are restrained from wide use in production is their high cost.
3. Strontium oxide is used as a flux in the making of glass for television tubes in place of barium oxide [CAS: 1304-28-5] BaO.
4. manufacture of strontium salts.
Preparation
Strontium oxide is prepared by thermal decomposition of strontium carbonate, hydroxide, or nitrate:
SrCO3 → SrO + CO2
Sr(OH)2 → SrO + H2O
Sr(NO3)2 → SrO + N2O5
Chemical Properties
white to grayish white; reacts with water, forming Sr(OH)2, with evolution of heat; enthalpy of fusion 75.00kJ/mol [MER06] [CRC10]
Physical properties
Strontium oxide
or strontia, SrO, is formed when Sr metal reacts with
oxygen:
2Sr+ O2→2SrO
Burning strontium in air results in a mixture of strontium
oxide and strontium nitride. It also forms from the
decomposition of strontium carbonate SrCO3. It is
a strongly basic oxide. It reacts
with moisture forming the hydroxide and with carbon
dioxide in the air to form the carbonate.
Flammability and Explosibility
Notclassified
Check Digit Verification of cas no
The CAS Registry Mumber 1314-11-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,3,1 and 4 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1314-11:
(6*1)+(5*3)+(4*1)+(3*4)+(2*1)+(1*1)=40
40 % 10 = 0
So 1314-11-0 is a valid CAS Registry Number.
InChI:InChI=1/O.Sr/rOSr/c1-2
1314-11-0Relevant articles and documents
The superconductor (Tl,Hg,Ca)2- (Ba,Sr)2(Ca,Sr,Tl)Cu2O7.6
Valldor, Martin,Bryntse, Ingrid,Morawski, Andrzej
, p. i126-i128 (2002)
The crystal structure of superconductor (Tl,Hg,Ca)2-(Ba,Sr)2(Ca,Sr,Tl)Cu2O7.6 was investigated. The compound contained both Tl and Hg in the charge reservoir (CR), Sr is located at both alkali-earth (AE) metal
Characterization of an alkaline earth metal-doped solid superacid and its activity for the esterification of oleic acid with methanol
Huang, Chien-Chang,Yang, Chieh-Ju,Gao, Pei-Jyuan,Wang, Nai-Ci,Chen, Ching-Lung,Chang, Jo-Shu
, p. 3609 - 3620 (2015/06/25)
The leaching of grafted sulfate groups is one of the major issues for the solid acid catalysts with sulfate modification. A detailed study of sulfated alkaline earth metal-ferric composite oxides was carried out to suppress the leaching of sulfate groups as well as maintain high reactivity during the esterification of oleic acid. The acid properties and quantities of the active sites present on the catalysts were studied with pyridine-adsorption, FT-IR, TGA, and titration methods. The following order of acidic strength was observed: SO42-/Sr-Fe oxide > SO42-/Ca-Fe oxide > SO42-/Mg-Fe oxide. After sulfate modification, sulfate ions are linked to the composite oxides in a bridged bidentate form. SO42-/Sr-Fe oxide exhibits superacidic nature due to the high induction effect of the sulfated ion grafted on the Sr cation. TGA and FT-IR spectroscopic analyses provide new insights into the function of the iron cations implanted on the catalyst surface for enhancing the turnover frequency (TOF) of the active sites on SO42-/Sr-Fe oxide in the esterification. It was verified that the active energy of SO42-/Sr-Fe oxide for the esterification of oleic acid with methanol was as low as 28.53 ± 0.72 kJ mol-1. In the reusability study, SO42-/Sr-Fe oxide exhibited high reusability in the esterification, due to the high stability of the sulfate ion grafted on SO42-/Sr-Fe oxide.
Synthesis and crystal structure of oxygen-deficient Bilayer Ruthenate Sr3Ru2O7-δ
Martinez-Anaya, Oliver,Garcia-Valdes, Jesus,De La Mora, Pablo,Tavizon, Gustavo
, p. 777 - 783 (2014/06/09)
The structural properties of oxygen-deficient Ruddlesden-Popper-type Sr3Ru2O7-δ compounds are presented. Sr3Ru2O7-δ compounds (δ≤0.17, 0.23, 0.28, 0.40, and 0.47) were obtained by hydrogen reduction of the parent Sr3Ru2O7 ruthenate. Rietveld structure refinements were performed to determine the crystal structure of the reduced compounds. Oxygen deficiency in the samples was studied by redox titrations and the Ru3+ content was confirmed by electron paramagnetic resonance. Magnetisation measurements were performed to study the magnetic response of the reduced phases. Removal of the oxygen atoms from the parent compound resulted in the decrease of the c-lattice parameter and increase of the a-lattice parameter that is related to partial reduction of Ru4+, in Sr3Ru2O7, to Ru3+. Rietveld analyses showed that the apical oxygen atoms of the RuO6 octahedra were partially lost during reduction. Redox titration experiments showed a linear correlation between reduction of the compounds and the annealing time under H2. CSIRO 2014.