What is Stannous Oxalate CAS 814-94-8?

Stannous Oxalate CAS 814-94-8, also called tin(II) oxalate or oxalic acid tin(II) salt, is the tin(II) salt of oxalic acid. It has the formula SnC2O4, a molecular weight of about 206.7 g/mol, and is supplied as a white crystalline powder.

Why is Stannous Oxalate used as an esterification and polymerization catalyst?

The tin(II) center activates carboxylic acid or ester intermediates, allowing esterification and polycondensation to proceed faster at lower temperatures than many non-tin catalysts. This makes it useful in polyester resin, plasticizer and ester-based lubricant production.

How does Stannous Oxalate help control color in polyesters and plasticizers?

Stannous oxalate helps minimize color reversion or yellowing during polymerization and downstream processing. Because the product remains a solid catalyst powder, it can be preferred in some systems where the color stability of clear or lightly colored end products is important.

What are the key purity and solubility characteristics of Stannous Oxalate?

This catalyst-grade material typically specifies stannous oxalate assay of at least 99.0% and tin content of at least 51.0%. It is practically insoluble in water and acetic acid but soluble in dilute hydrochloric acid and sulfuric acid, and it decomposes around 280 C.

How should Stannous Oxalate CAS 814-94-8 be stored?

Store it in a cool, shaded area, commonly below 30 C, and keep the container tightly closed to protect the powder from moisture and contamination. Avoid prolonged exposure to high heat because the material decomposes rather than melting.

Stannous Oxalate CAS 814-94-8

Stannous Oxalate, CAS 814-94-8, is a tin(II) oxalate catalyst supplied for esterification, polyester, plasticizer and ester-based lubricant production. Confirm the required assay, tin content and grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 814-94-8
Synonyms: Tin(II) oxalate, Oxalic acid tin(II) salt, Ethanedioic acid tin(II) salt, Tin oxalate
Einecs: 212-414-0
Molecular Formula: SnC₂O₄
Grade: Catalyst Grade / Industrial Grade
Package: 25kg Fiber Drum with PE liner

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Product Description

Stannous Oxalate, CAS 814-94-8, also called tin(II) oxalate, is the tin(II) salt of oxalic acid.

Synonyms: Tin(II) oxalate; Oxalic acid tin(II) salt; Ethanedioic acid tin(II) salt; Tin oxalate.

CAS: 814-94-8.

It is a white crystalline powder with a specific gravity of about 3.56 g/cm³.

It has a stannous oxalate assay of not less than 99.0% and a tin content of not less than 51.0%.

It decomposes around 280 °C rather than melting.

It is practically insoluble in water and acetic acid, and soluble in dilute hydrochloric acid and sulfuric acid.

The tin(II) center activates carboxylic acid or ester intermediates, accelerating esterification and polycondensation at lower temperatures.

It is used in polyester resin, plasticizer and ester-based lubricant production.

It helps minimize color reversion or yellowing during polymerization and downstream processing.

It is used as a catalyst in coal hydrogenation or liquefaction processes.

It is used as a mordant in textile dyeing and printing, and in certain acidic tin plating baths.

It is also used as a reducing agent or additive in specialized glass and ceramic formulations.

Confirm appearance, assay, tin content, melting point, loss on drying, iron, chloride, sulphate, solubility, specific gravity and packaging.

Store in a cool, shaded area, commonly below 30 °C, and keep the container tightly closed to protect against moisture and contamination.

Store away from strong oxidizing agents and alkalis, as the powder is slightly hygroscopic and can decompose rather than melt.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required assay and grade, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

Q:
What is Stannous Oxalate CAS 814-94-8?

A: Stannous Oxalate CAS 814-94-8, also called tin(II) oxalate or oxalic acid tin(II) salt, is the tin(II) salt of oxalic acid. It has the formula SnC2O4, a molecular weight of about 206.7 g/mol, and is supplied as a white crystalline powder.
Q:
Why is Stannous Oxalate used as an esterification and polymerization catalyst?

A: The tin(II) center activates carboxylic acid or ester intermediates, allowing esterification and polycondensation to proceed faster at lower temperatures than many non-tin catalysts. This makes it useful in polyester resin, plasticizer and ester-based lubricant production.
Q:
How does Stannous Oxalate help control color in polyesters and plasticizers?

A: Stannous oxalate helps minimize color reversion or yellowing during polymerization and downstream processing. Because the product remains a solid catalyst powder, it can be preferred in some systems where the color stability of clear or lightly colored end products is important.
Q:
What are the key purity and solubility characteristics of Stannous Oxalate?

A: This catalyst-grade material typically specifies stannous oxalate assay of at least 99.0% and tin content of at least 51.0%. It is practically insoluble in water and acetic acid but soluble in dilute hydrochloric acid and sulfuric acid, and it decomposes around 280 C.
Q:
How should Stannous Oxalate CAS 814-94-8 be stored?

A: Store it in a cool, shaded area, commonly below 30 C, and keep the container tightly closed to protect the powder from moisture and contamination. Avoid prolonged exposure to high heat because the material decomposes rather than melting.

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