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Characteristic
Strontium oxide or strontia, SrO, is formed when strontium reacts with oxygen. 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.
Chemical formula：SrO
Molar mass：103.619 g/mol
Appearance：colorless cubic crystals
Density：4.70 g/cm3
Melting point：2,531 °C (4,588 °F; 2,804 K)
Boiling point：3,200 °C (5,790 °F; 3,470 K) (decomposes)
Solubility in water：reacts, forms Sr(OH)2
Solubility：miscible with potassium hydroxide
slightly soluble in alcohol
insoluble in acetone and ether
Magnetic susceptibility (χ)：−35.0·10−6 cm3/mol
Refractive index (nD)：1.810
Application
About 8% by weight of cathode ray tubes is strontium oxide, which has been the major use of strontium since 1970. Color televisions and other devices containing color cathode ray tubes sold in the United States are required by law to use strontium in the faceplate to block X-ray emission (these X-ray emitting TVs are no longer in production). Lead(II) oxide can be used in the neck and funnel, but causes discoloration when used in the faceplate.
Characteristic
Strontium oxide or strontia, SrO, is formed when strontium reacts with oxygen. 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.
Chemical formula：SrO
Molar mass：103.619 g/mol
Appearance：colorless cubic crystals
Density：4.70 g/cm3
Melting point：2,531 °C (4,588 °F; 2,804 K)
Boiling point：3,200 °C (5,790 °F; 3,470 K) (decomposes)
Solubility in water：reacts, forms Sr(OH)2
Solubility：miscible with potassium hydroxide
slightly soluble in alcohol
insoluble in acetone and ether
Magnetic susceptibility (χ)：−35.0·10−6 cm3/mol
Refractive index (nD)：1.810
Application
About 8% by weight of cathode ray tubes is strontium oxide, which has been the major use of strontium since 1970. Color televisions and other devices containing color cathode ray tubes sold in the United States are required by law to use strontium in the faceplate to block X-ray emission (these X-ray emitting TVs are no longer in production). Lead(II) oxide can be used in the neck and funnel, but causes discoloration when used in the faceplate.
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