Stannous Oxide

Tin(II) oxide also knowns stannous oxide is a compound and its formula SnO. It is composed of tin and oxygen where tin has the oxidation state of +2. The two forms are a stable blue-black form and a metastable red form and is 97% pure. The dominant use of this compound is as a precursor in the manufacturing of other, typically trivalent, tin compounds or salts. It may also be employed as a reducing agent and also in the creation of ruby glass. Its melting point is 1080 degree C.

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Detailed Description for Stannous Oxide

STANNOUS OXIDE [SnO, CAS RN: 21651-19-4] is a black powder, insoluble in water, soluble in acids and strong bases, used as a reducing agent, decomposes when heated and chemical intermediate, unstable in air and for glass plating, also known as tin protoxide.

 

Tin(II) oxide (stannous oxide) is a compound with the formula SnO. It is composed of tin and oxygen where tin has the oxidation state of +2. A stable blue-black form and a metastable red form are the two froms in SnO.

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

Dark brown / black powder

MELTING POINT

1080 degree C

BOILING POINT

 

SOLUBILITY IN WATER

 Insoluble

SPECIFIC GRAVITY

 

pH

 

REFRACTIVE INDEX

 

VAPOR DENSITY

 

NFPA RATING

Health: 1, Flammability: 0, Reactivity: 0

FLASH POINT

 

AUTOIGNITION

 

STABILITY

Stable but will oxidise to Stannic Oxide on prolonged exposure

 

Item

Index

SnO %≥

97

HCL-insol. Mat % ≤

0.05

Ammonium Salt Content % ≤

0.05

SO4 % ≤

0.01

Heavy Metal (Pb) Content % ≤

0.03

Chloride % ≤

0.02

Uses:

The dominant use of stannous oxide is as a precursor in manufacturing of other, typically trivalent, tin compounds or salts. It may also be employed as a reducing agent and in the creation of ruby glass. It has a use as an esterification catalyst.

 

Cerium(III) oxide in ceramic form, together with Tin(II) oxide (SnO) is used for illumination with UV light


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