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Stannous Oxide

CAS 21651-19-4OSnMW 134.71

Stannous Oxide (CAS No. 21651-19-4) is supplied by Jinan Shenghe Chemical Co., Ltd. with a typical purity of per batch COA (not published). Main applications include Inorganic Chemicals. Bulk quantities are available with COA; purity and packaging are subject to batch COA and order confirmation.

Product Overview

CAS Number21651-19-4
Molecular FormulaOSn
Molecular Weight134.71
Melting Point1976 °F@600 mmHg (decomposes)
Purityper batch COA (not published)
Packagingper order / batch confirmation (not published)
ApplicationsInorganic Chemicals
CategoryInorganic Chemicals

Applications

Inorganic Chemicals

Packaging & Storage

Packagingper order / batch confirmation (not published)
Purityper batch COA (not published)
StorageSealed, cool and dry place
ShippingStandard chemical transport
SampleAvailable on request
Lead TimeIn stock / per order

Quality & Documentation

COA (Certificate of Analysis) is provided with every batch. MSDS/technical data sheets and third-party test reports are available on request. Purity and packaging are subject to batch COA and order confirmation.

Product Profile

Product Overview

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.

Inorganic chemicals cover acids, bases, salts and metal compounds, serving as key feedstocks for metallurgy, electronics, water treatment and basic chemical industry.

Jinan Shenghe Chemical Co., Ltd. supplies Stannous Oxide with stable inventory and provides a Certificate of Analysis (COA) with each batch; custom repacking is available per process requirement.

Chemical Identity & Nomenclature

CAS number: 21651-19-4 — searchable in PubChem for physicochemical, safety and regulatory data.

Its molecular formula OSn comprises 1 O, 1 Sn atoms.

Also known as: Stannous Oxide

Category: inorganic chemicals

Applications & Use Cases

Widely used in electroplating, battery materials, catalysts, fertilizers, water-treatment agents and ceramics/glass.

Specifications & Quality

Typical purity is per batch COA (not published). Packaging is per order / batch confirmation (not published). Storage: sealed, in a cool and dry place. Each batch ships with a COA; MSDS and other technical documents are available on request.

Sourcing & Support

Supplier: Jinan Shenghe Chemical Co., Ltd.. Samples can be arranged on request; lead time depends on stock and order size. Quotes are returned within one business day by email or WhatsApp.

Email: info@591daili.com · Tel/WhatsApp: +86-18553102138

Frequently Asked Questions

What is the CAS number of Stannous Oxide?

The CAS number of Stannous Oxide is 21651-19-4.

What purity and packaging are available?

Typical purity is per batch COA (not published), supplied in per order / batch confirmation (not published), with COA provided.

What are the applications of Stannous Oxide?

Main applications include Inorganic Chemicals.

What quality documents are provided?

Each batch ships with a Certificate of Analysis (COA). MSDS and other technical documents are available on request.

How should Stannous Oxide be stored and handled?

Store sealed in a cool, dry place. Handling and PPE follow the MSDS supplied with the batch; general chemical-handling precautions are recommended.

Can I request a sample?

Samples are available on request. Please contact us at info@591daili.com or via WhatsApp for details.

How do I buy Stannous Oxide or get a quote?

Email info@591daili.com or reach us on WhatsApp with the product name, CAS number and required quantity; quotes within one business day. Supplier: Jinan Shenghe Chemical Co., Ltd..

PubChem Public Data

Description

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).

Identification

CAS Registry Number21651-19-4
PubChem CID88989
Molecular formulaOSn
IUPAC nameoxotin

Computed Descriptors

Molecular Weight134.71
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count1
Rotatable Bond Count0
Exact Mass135.897117
Monoisotopic Mass135.897117
Topological Polar Surface Area17.1
Heavy Atom Count2
Formal Charge0
Complexity2

Physical & Chemical Properties

Melting Point1976 °F@600 mmHg (decomposes)
Melting Point1630 °C
Melting Point(600 mmHg): 1976 °F (Decomposes)
Density6.45 g/cm³
Density6.3
Density6.95 @25 °C
Vapor Pressure0 mmHg (approx) (NIOSH, 2024)
Vapor Pressure0 mmHg
Vapor Pressure0 mmHg (approx)

Physical description & handling notes

  • Tin(ii) oxide appears as brownish-black powder or black to blue-black crystalline solid. Mp: 1080 °C (decomposes); density: 6.45 g cm-3. Insoluble in water.
  • Dry Powder
  • Brownish-black solid; [Merck Index] Bluish-black odorless powder; [Alfa Aesar MSDS]
  • BLUE-TO-BLACK CRYSTALLINE POWDER.
  • Brownish-black powder or black to blue-black crystalline solid.
  • Brownish-black powder.

Regulatory Status

GHS notification summary64.7% (130 / 201)

GHS Hazard Classification

GHS notification summary64.7% (130 / 201)
Reported hazard statementsH302 (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]

Documented Uses

  • Tin oxides are used in solders, protective coatings, and alloys; [ACGIH] Used as a reducing agent and to make stannous salts; [Merck Index] Used to make gold-tin and copper-tin ruby glass; [INCHEM CICADS]
  • Abrasive Blasting [Category: Clean]
  • Metal Preparation and Pouring [Category: Foundry]
  • Soldering [Category: Heat or Machine]
  • Semiconductor Manufacturing [Category: Industry]
  • Textiles (Printing, Dyeing, or Finishing) [Category: Industry]

Synonyms

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

Frequently Asked Questions

What are the CAS number and molecular formula of Stannous Oxide?

CAS 21651-19-4; molecular formula OSn; molecular weight — g/mol.

What other names is Stannous Oxide known by?

Tin(II) oxide, 21651-19-4, Tin monoxide, Tin oxide (Sn2O2), Tin (II) Oxide, stannanone.

Is Stannous Oxide classified as hazardous?

64.7% of GHS notifications report no hazard classification (130 of 201).

What are the key physical properties of Stannous Oxide?

Melting Point: 1976 °F@600 mmHg (decomposes); Melting Point: 1630 °C; Melting Point: (600 mmHg): 1976 °F (Decomposes); Density: 6.45 g/cm³.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.

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Supplier: Jinan Shenghe Chemical Co., Ltd.

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