Stannous Oxide (CAS 21651-19-4) — formula OSn, molecular weight 134.71; category inorganic chemicals.
Stannous Oxide (CAS 21651-19-4) is a inorganic chemicals. Its molecular formula OSn comprises 1 O, 1 Sn atoms. Its molecular weight is about 134.71. Reported physicochemical data: melting point around 1976 °F@600 mmHg (decomposes). Inorganic chemicals cover acids, bases, salts and metal compounds, serving as key feedstocks for metallurgy, electronics, water treatment and basic chemical industry. Widely used in electroplating, battery materials, catalysts, fertilizers, water-treatment agents and ceramics/glass. As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 21651-19-4 |
|---|---|
| Molecular Formula | OSn |
| Molecular Weight | 134.71 |
| Melting Point | 1976 °F@600 mmHg (decomposes) |
| Applications | Tin oxides are used in solders, protective coatings, and alloys, Used as a reducing agent and to make stannous salts, Used to make gold-tin and copper-tin ruby glass, Abrasive Blasting |
| Category | Inorganic Chemicals |
Documented applications: Tin oxides are used in solders, protective coatings, and alloys, Used as a reducing agent and to make stannous salts, Used to make gold-tin and copper-tin ruby glass, Abrasive Blasting.
Stannous Oxide is an inorganic compound with CAS registry number 21651-19-4 and molecular formula OSn (molecular weight 134.71), belonging to the inorganic chemicals segment of chemical raw materials.
CAS number: 21651-19-4
Its molecular formula OSn comprises 1 O, 1 Sn atoms.
Also known as: Stannous Oxide · 氧化亚锡
Category: inorganic chemicals
The CAS registry number of Stannous Oxide is 21651-19-4.
Molecular formula OSn, molecular weight 134.71.
It is also registered under: Stannous Oxide, 氧化亚锡.
Recorded applications: Tin oxides are used in solders, protective coatings, and alloys, Used as a reducing agent and to make stannous salts, Used to make gold-tin and copper-tin ruby glass, Abrasive Blasting.
Category: Inorganic Chemicals.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for Stannous Oxide (CAS 21651-19-4), compiled from public chemistry databases.
| CAS Registry Number | 21651-19-4 |
|---|---|
| PubChem CID | 88989 |
| Molecular formula | OSn |
| IUPAC name | oxotin |
| Molecular Weight | 134.71 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 0 |
| Exact Mass | 135.897117 |
| Monoisotopic Mass | 135.897117 |
| Topological Polar Surface Area | 17.1 |
| Heavy Atom Count | 2 |
| Melting Point | 1976 °F@600 mmHg (decomposes) |
|---|---|
| Melting Point | 1630 °C |
| Melting Point | (600 mmHg): 1976 °F (Decomposes) |
| Density | 6.45 g/cm³ |
| Density | 6.3 |
| Density | 6.95 @25 °C |
| Vapor Pressure | 0 mmHg (approx) (NIOSH, 2024) |
| Vapor Pressure | 0 mmHg |
| Vapor Pressure | 0 mmHg (approx) |
Tin(II) oxide; 21651-19-4; Tin monoxide; Tin oxide (Sn2O2); Tin (II) Oxide; stannanone; TIN PROTOXIDE; RefChem:1100132; 244-499-5; TIN OXIDE (SnO); Tin(2+) oxide; oxotin; MFCD00011243; T 1186; Tego RL; Tin dioxide; Tin dioxide (SnO2); Tin(IV) oxide; (oxo)stannane; Tin Oxide Nanowires
| GHS notification summary | 64.7% (130 / 201) |
|---|
| GHS notification summary | 64.7% (130 / 201) |
|---|---|
| Reported hazard statements | H302 (35.3%), H317 (35.3%), H319 (35.3%), H372 (35.3%) |
This chemical does not meet GHS hazard criteria for 64.7% (130 of 201) of all reports.
H302 (35.3%): Harmful if swallowed [Warning Acute toxicity, oral]
Stannous Oxide · CAS 21651-19-4 · OSn. Melting Point: 1976 °F@600 mmHg (decomposes); Melting Point: 1630 °C; Melting Point: (600 mmHg): 1976 °F (Decomposes).
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 氧化亚锡