TIN(II) OXIDE Chemical Properties

Melting point:

1080 °C

Density 

6,95 g/cm³

storage temp. 

Store at RT.

solubility 

insoluble in H2O, ethanol; soluble in acid solutions

form 

powder

color 

Blue-black

Specific Gravity

6.95

Water Solubility 

Insoluble in water, and alcohol.

Hydrolytic Sensitivity

4: no reaction with water under neutral conditions

Crystal Structure

PbO type

crystal system

square

Merck 

14,8787

Space group

P4/nmm

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.38029	0.38029	0.48382	90	90	90	0.07

Exposure limits

ACGIH: TWA 2 mg/m3
NIOSH: IDLH 100 mg/m3; TWA 2 mg/m3

Stability:

Stable. Incompatible with strong acids, strong bases.

CAS DataBase Reference

21651-19-4(CAS DataBase Reference)

EPA Substance Registry System

Stannous oxide (21651-19-4)

Safety Information

Safety Statements 

24/25

OEB

B

OEL

TWA: 2 mg/m3

WGK Germany 

3

RTECS 

XQ3700000

TSCA 

Yes

HS Code 

28259085

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
• Language:English Provider:ALFA

TIN(II) OXIDE Usage And Synthesis

Physical Properties

Bluish-black powder; tetragonal crystals; density 6.45 g/cm3; decomposes at 1,080°C; insoluble in water; dissolves in acids to form Sn2+ and in base to form stannite ion, Sn(OH)^3–.

Uses

Tin(II) oxide is a reducing agent; and is used in preparing other tin(II) salts. Also, it is used to make soft abrasive putty powder.

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) + 2OH¯(aq) → Sn(OH)2 (s)

Chemical Properties

black crystals with a characteristic odour. Tin oxide is insoluble in water but soluble in acids and alkalis and slightly soluble in ammonium chloride. Tin oxide is incompatible with acids and/or alkalis.

Uses

Reducing agent; preparation of stannous salts.

Uses

Tin(II) oxide is used as reducing agent, soft abrasive, and in preparation of stannous salts. It is used in the manufacture of copper ruby glass, and for illumination with UV light.

General Description

Brownish-black powder or black to blue-black crystalline solid. Mp: 1080°C (decomposes); density: 6.45 g cm-3. Insoluble in water.

Reactivity Profile

TIN(II) OXIDE is a reducing agent. Unstable in air due to slow oxidation to tin(IV) oxide. At 300°C this oxidation proceeds incandescently. Incompatible with strong oxidizing agents. Reacts with acids and with strong bases.

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