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Stannous oxide

CAS Number
21651-19-4
EC Number
244-499-5
Chemical Formula
OSn
Molecular Weight
134.71 g/mol

Description

Stannous oxide (CAS 21651-19-4 ), also identified commercially as SnO, is an inorganic tin compound used primarily as a catalyst and catalyst precursor in polymer manufacturing. It initiates and controls polymerization reactions. This compound serves as a functional input for producers of specialty plastics and polymer systems. In plastics and polymer processing, SnO acts as a catalyst precursor for the production of polyurethanes and polyesters. Controlled tin activity influences molecular weight and reaction rate during synthesis. It is used in the synthesis of organotin compounds, which serve as downstream catalysts and stabilizers in PVC and other polymer formulations. Manufacturers of tin-based catalyst systems source this material as a starting material for producing dibutyltin and other organometallic derivatives. Its role in polymerization initiation is critical for specialty resin producers. The material is supplied as a dark powder, typically in technical grade suitable for industrial catalyst and chemical synthesis applications. Purity specifications commonly range from 97% to 99%+ for industrial use. Material is characterized by tin content as the primary quality parameter for manufacturing. Packaging is available in drums and bulk quantities to meet the volume requirements of chemical manufacturers and polymer producers. Contact us for supply of Stannous oxide Request Quote

Other Names (Synonyms)

Tin(II) oxide | Tin oxide (SnO) | Tin monoxide | Tin oxide (Sn2O2) | TIN PROTOXIDE | RefChem:1100132 | Tin(2+) oxide | Tin Oxide | SnO

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point1080 °C
Density6.45 g/cm³
Appearanceblack crystals with a characteristic odour
ColorBlue-black
Formpowder
Water SolubilityInsoluble in water, and alcohol.

Safety & Handling

Danger
GHS07· IrritantGHS08· Health Hazard

Hazard Statements

H302Harmful if swallowed
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H372Causes damage to organs through prolonged or repeated exposure

Precautionary Statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P272Contaminated work clothing should not be allowed out of the workplace.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code28259085
Storage Class6.1C - Combustible acute toxic Cat.3 toxic compounds or compounds which causing chronic effects
WGK (Germany)3