18282-10-5

Basic information

• Product Name: Stannic oxide
• Synonyms: TIN DIOXIDE;TIN(+4)OXIDE;TIN(IV) OXIDE;TIN OXIDE;TIN OXIDE, WHITE;c.i.77861;cassiterite[qr];ci77861[qr]
• CAS NO: 18282-10-5
• Molecular Formula: O2Sn
• Molecular Weight: 150.71
• EINECS: 242-159-0
• Product Categories: Inorganics;metal oxide;50: Sn;and Other Ceramics;Anode Materials;Nanoparticles: Oxides;Alternative Energy;Lithium-Ion Batteries;Materials Science;Metal and Ceramic Science;Nanomaterials;Nanopowders and Nanoparticle Dispersions;Nitrides;Oxides;Tin
• Mol File: 18282-10-5.mol
• Article Data: 0

Chemical Properties

• Melting Point: 1127 °C
• Boiling Point: 1800-900°C
• Flash Point: 1800-1900°C
• Appearance: White to slightly gray/nanopowder
• Density: 6.95 g/mL at 25 °C(lit.)
• Refractive Index: 1.9968
• Storage Temp.: Store at +5°C to +30°C.
• Solubility: Soluble in hot concentrated alkalis, and concentrated acids. Ins
• Water Solubility: INSOLUBLE
• Stability: Stable.
• Merck: 14,8778
• CAS DataBase Reference: Stannic oxide(CAS DataBase Reference)
• NIST Chemistry Reference: Stannic oxide(18282-10-5)
• EPA Substance Registry System: Stannic oxide(18282-10-5)

Safety Data

• Safety Statements: 24/25
• RIDADR: UN1993
• RTECS: XQ4000000
• TSCA: Yes
• HazardClass: 3
• PackingGroup: III
• Hazardous Substances Data: 18282-10-5(Hazardous Substances Data)

Usage

Description

Stannic oxide, also known as tin oxide, is an inorganic compound consisted of tin and oxygen, which is widely applied in various fields. The dominant usage of stannic oxide is to serve as a precursor in the production of other, especially trivalent, tin compounds or salts. It is also commonly employed as an opacifier in glazes. The addition of larger amounts of stannic oxide enhances the refractoriness of glazes and turns it from transparent to an opaque white. Stannic oxide is also used in the production of customized glass by giving transparent glass an opaque, porcelain-like, opaque appearance. It has proved to be a highly effective polishing material for glass and quarried rock, such as marble, granite and quartz. Besides, stannous oxide can be used for llumination with UV light in combination with cerium oxide in ceramic form. It also has a broad range of applications in other areas, such as semiconductors, photovoltaic materials, solar cells, lithium ion batteries, photocatalysts, and as gas-sensing agents in solid-state detectors.

References

http://sciencing.com/tin-oxide-uses-8125683.html https://www.alfa.com/zh-cn/catalog/012283/ http://www.azom.com/article.aspx?ArticleID=2358 https://en.wikipedia.org/wiki/Tin(II)_oxide

Chemical Properties

white or off-white powder

Physical properties

White or grayish powder; tetragonal crystals; density 6.85 g/cm3; refractive index 2.006; Mohs hardness 6.5; melts at 1,630°C; insoluble in water; soluble in hot concentrated alkalies.

Uses

Different sources of media describe the Uses of 18282-10-5 differently. You can refer to the following data:
1. Stannic oxide (SnO2) is a whitish powder used as a ceramic glaze and polishing agent.
2. It is used to detect carbon monoxide. Used in ceramic glazes and colors, putty, perfume preparations, textiles, polishing powder for steel, and the manufacture of special glasses. Stannic oxide is also used in making white patinas.
3. Polishing glass and metals; manufacture of milk-colored, ruby and alabaster glass, enamels, pottery, putty; mordant in printing and dyeing fabrics; in fingernail polishes.

Preparation

Tin(II) oxide is prepared by heating tin(II) hydroxide. The latter is obtained as a white precipitate by reacting Sn2+ ions with hydroxide ions: Sn2+(aq) + 2OHˉ(aq) → Sn(OH)2 (s) Sn(OH)2 ?→ ?? SnO(s) + H2O(g).

General Description

White or off-white crystalline solid or powder. Mp 1127°C, Sublimes: 1800-1900°C, density: 6.95 g cm-3. Insoluble in water. Soluble in concentrated sulfuric acid, hydrochloric acid. Occurs in nature as the mineral cassiterite. Used as a catalyst, in putty, as a polishing powder for steel and glass, in ceramic glazes and colors. Flowers of tin refers to the material collected as the result of condensation after sublimation.

Reactivity Profile

TIN(IV) OXIDE is non-flammable and non-combustible. Reacts vigorously with strong reducing agents. Incompatible with chlorine trifluoride.

Purification Methods

Reflux it repeatedly with fresh HCl until the acid shows no tinge of yellow. The oxide is then dried at 110o.

InChI:InChI=1/2O.Sn/rO2Sn/c1-3-2

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