Tin(IV) oxide | SSHADE

Processing math: 100%

Solid phase

Official name: Tin(IV) oxide

Name and identifiers

Secondary names: Stannic oxide; Stannic dioxide; Tin dioxide; Cassiterite
CAS number: 18282-10-5

Family: covalent network solid
Class: tridimentional covalent network solid
Compound type: oxide

Chemical composition

Formula: $SnO_2$
Chemical formula: SnO2
Elemental formula: Sn O2
Isotope mixture type: terrestrial abundance

6.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Sn$	Tin	element	1	0.3333333333333333	1	constituent element	main
	$O$	Oxygen	element	2	0.6666666666666666	1	constituent element	main

Chemical functions and bonds

Chemical bonds

	Bond	Number
	$-Sn-O-$	6

Class: tridimensional covalent networks (11)
Type: one metal and one non-metal (or metalloid) tridimensional networks (11.04)

Associated phases

Equivalent mineral: Cassiterite

Crystallography

Phase type: crystalline
Crystal system: tetragonal
Crystal class: ditetragonal-dipyramidal
Crystal class symbol: 4/m (C4h)
Crystal spacegroup: P4(2)/mnm

Physical properties

Molar mass: 150.708 $g/mol$
Density: 6.9 $g/cm^3$

Thermodynamical properties

State NTP

solid

Phase transitions

Phase transition type	Other phases	Temperature - Pressure
solid-liquid	liquid	1630°C (1900 K)

Optical properties

Refringence type: uniaxial
Refringence sign: positive
Birefringence: 0.090 - 0.103
Refraction index $n_{\alpha}$: 1.99 - 2.01
Refraction index $n_{\beta}$: 2.093 - 2.100
Pure color: gray
Diaphaneity: transparent
Luster: adamantine

Links and Publications

Links