Stannous Oxide

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Specifications

Item Index
Appearance Blue-black crystalline powder with metallic luster
Density 5.9—6.4g/cm3

 

Packing& Storage

Packing In 25kg barrel
Storage 20℃, 2 years.
Shipping Room temperature in China; may vary elsewhere

 

General Information

1.1 Chemical & Physical Properties

Common Names Stannous Oxide
Structure
CAS　No. 21651-19-4 Boiling Point (℃) N/A
Molecular Weight 134.70000 Melting Point (℃) 1080ºC
Appearance Dark brown or black powder Vapor Specific Gravity N/A
HS Code 2825909000 Flash Point (℃) N/A
Solubility Insoluble in water and alkali, soluble in acid and produces stannous salts Autoignition Temperature (℃) N/A

 

1.2 Safety Information

Safety Phrases 24/25
RIDADR  NONH for all modes of transport
WGK Germany 3
Packaging Group N/A
Hazard Class N/A

 

SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat. Use local exhaust or breathing protection. Fresh air, rest.
Skin Redness. Burning sensation. Itching. Protective gloves. Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness. Pain. Wear safety goggles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion Abdominal pain. Nausea. Vomiting. Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention .

 

1.3 Synthetic Route

Stannous chloride dihydrate is dissolved with as little hot concentrated hydrochloric acid as possible. Slowly add sodium carbonate aqueous solution under stirring, because CO2 gas is produced, you must pay attention to the addition rate, and stop adding when the mixture is alkaline with phenolphthalein test. Heating 2~3h colorless hydrated oxide is quantitatively transformed into blue-black SnO with metallic luster. The product is washed several times with water and dried at 110 °C. The yield is about 80%.