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SnO2 Stannic oxide CAS 18282-10-5

Tin dioxide, also known as "tin oxide", "tin anhydride", "tin ash", is a naturally occurring mineral called "cassiterite". Chemical formula SnO2. Molecular weight 150.69. White tetragonal (also hexagonal or orthorhombic) crystals that turn yellow when heated. Melting point 1127 ℃, sublimation at 1800-1900 ℃, relative density 6.95, refractive indices 1.997 and 2.093. Tin dioxide exists in the form of cassiterite in nature. Tin ore is generally reddish brown in color, in the form of particles or blocks, and is mostly dispersed in granite. It is the main ore for extracting tin. Tin dioxide is stable to both air and heat, insoluble in water and difficult to dissolve in acid or alkali solutions, but soluble in hot concentrated sulfuric acid, molten caustic soda, and potassium hydroxide, and slightly soluble in alkali metal carbonate solutions. Not reacting with general chemical reagents, not reacting with nitric acid. It slowly dissolves into chloride by co heating with concentrated HCl. At high temperatures, it is reduced to metallic tin by reacting with hydrogen gas. Metal tin and CO2 are obtained by reacting with CO, and the reaction is reversible.


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Model:
18282-10-5
Brand:
bosschem
Code:
18282-10-5

Product Description

Stannic oxide (SnO2 )

CAS 18282-10-5

Alais: TIN DIOXIDE

Molecular formula: O2Sn

Molecular weight: 150.71

Structural formula:

ce18b4fc2cb2abb041a5147c6e065473_18282-10-5

1. Performance and use

Tin dioxide, also known as "tin oxide", "tin anhydride", "tin ash", is a naturally occurring mineral called "cassiterite". Chemical formula SnO2. Molecular weight 150.69. White tetragonal (also hexagonal or orthorhombic) crystals that turn yellow when heated. Melting point 1127 ℃, sublimation at 1800-1900 ℃, relative density 6.95, refractive indices 1.997 and 2.093. Tin dioxide exists in the form of cassiterite in nature. Tin ore is generally reddish brown in color, in the form of particles or blocks, and is mostly dispersed in granite. It is the main ore for extracting tin. Tin dioxide is stable to both air and heat, insoluble in water and difficult to dissolve in acid or alkali solutions, but soluble in hot concentrated sulfuric acid, molten caustic soda, and potassium hydroxide, and slightly soluble in alkali metal carbonate solutions. Not reacting with general chemical reagents, not reacting with nitric acid. It slowly dissolves into chloride by co heating with concentrated HCl. At high temperatures, it is reduced to metallic tin by reacting with hydrogen gas. Metal tin and CO2 are obtained by reacting with CO, and the reaction is reversible.

1. Used for electronic components

2. Tin salt manufacturing, opaque glass and milky white glass manufacturing, polishing agents for marble and glass

3. Fabric mordants and weighting agents

4. Enamel pigments, ceramic whitening agents, etc.

2. Technical indicators

Stannic oxide Basic information
Description References
Product Name:	Stannic oxide
Synonyms:	TIN DIOXIDE;TIN(+4)OXIDE;TIN(IV) OXIDE;TIN OXIDE;stannicdioxide;stannicdioxide[qr];stannicoxide(sno2)[qr];stannicoxide[qr]
CAS:	18282-10-5
MF:	O2Sn
MW:	150.71
EINECS:	242-159-0
Mol File:	18282-10-5.mol
Stannic oxide Chemical Properties
Melting point	1127 °C
Boiling point	1800-900°C
density	6.95 g/mL at 25 °C(lit.)
refractive index	1.9968
Fp	1800-1900°C
storage temp.	Store at +5°C to +30°C.
solubility	Soluble in hot concentrated alkalis, and concentrated acids. Insoluble in alcohol.
form	nanopowder
color	White to slightly gray
Specific Gravity	7
PH	4-5 (50g/l, H2O, 20℃)(slurry)
Water Solubility	INSOLUBLE
Hydrolytic Sensitivity	6: forms irreversible hydrate
Sublimation	1800-1900 ºC
Merck	148,778
Exposure limits	ACGIH: TWA 2 mg/m3
Exposure limits	NIOSH: IDLH 100 mg/m3; TWA 2 mg/m3
Stability:	Stable.
CAS DataBase Reference	18282-10-5(CAS DataBase Reference)
EPA Substance Registry System	Tin dioxide (18282-10-5)

Item name	Stannic Oxide Nano Powder
Purity(%)	99.99%
Specific surface area(m2/g)	20-30
Apperance and Color	Light yellow solid powder
Particle Size	20nm, 30-50nm, 70-80nm, adjustable;
Grade Standard	Industrail Grade
Morphology	Nearly spherical
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