Stannous octoate


Chinese name: Stannous octoate

Alias: 2001 catalyst, stannous octoate, polyurethane catalyst, stannous octoate D19, stannous octoate T-9, gel catalyst T-9


Related categories: Organotin; Organometallic reagents; Catalysts; Metal organics; Organic chemical raw materials; Biochemical reagents; Analytical pure; Organic chemical raw materials; Raw pharmaceutical materials; Additive;Organic-metalsalt;metalcarboxylate;curingagent

Stannous octoate is a basic catalyst for the production of polyurethane foam, room temperature curing silicone rubber, polyurethane rubber, and polyurethane coatings. The chemical properties are extremely unstable and easily oxidized.

Chinese name stannous octoate
English name Stannous octoate
Chemical formula C16H30O4Sn
Molecular weight 405.1
CAS login number 301-10-0
Secret Degree 1.251
Main content of stannous 28+/-0.50%
Corrosive: No corrosion

Physical and chemical performance:

Molecular formula (Formula): C16H30O4Sn

Molecular Weight: 405.10

CAS No: 301-10-0

Density 1.251

The main content of stannous: 28+/-0.50%

Main ingredients: Content: (calculated as stannous) about 22%, total tin about 23% EC.

Appearance and traits: white or yellow paste.

Relative density (water=1): 1.251

Flash point (℃):>110

Freezing point: -20℃

Viscosity (25℃): ≤380MPa·s

Refractive index: 1.492

Solubility: insoluble in water, soluble in petroleum ether and polyol

Corrosiveness: no corrosion

Toxicity: Toxic, with strong neurotoxicity, the allowable concentration in the air is 0.1mg/m3.

Other physical and chemical properties: 1.4933

CAS 301-10-0 Stannous octoate

Quality Index:

Appearance [1] Light yellow transparent liquid or yellowish brown paste

chromaticity (platinum-cobalt color number) ≤6

The mass fraction of total tin ≥28.0%

stannous content ≥27.25%

Foreign brands include Kosmos 29 (Germany) and Nuocure (USA).


For organic synthesis.

Stannous octoate is a white or light yellow-brown paste, sometimes called stannous octoate. Soluble in petroleum ether, insoluble in water. It is the basic catalyst for the production of polyurethane foam. It is mainly used for the gelation reaction of polyether-polyurethane foaming. It can also be used as an antioxidant for urethane foam. Used as a catalyst for polyurethane synthesis and room temperature vulcanization of silicone rubber. It is also used as a catalyst type curing agent for epoxy resin. The catalytic activity of stannous octoate is greater than that of dibutyltin dilaurate during curing. If the two are used in combination, the effect will be better than when used alone, and it can take into account the reaction speed and curing speed. Since divalent tin compounds are easily oxidized and decomposed by oxygen and water vapor in the air, they must be used for nitrogen protection during storage and must be sealed to avoid high temperature and excessive humidity to prevent activity degradation or failure.

Storage and transportation:

Should be sealed and stored in a dry, cool and ventilated warehouse


200KG/bucket Storage: It is recommended to store in a dry and cool area with proper ventilation. After the original packaging, please fasten the packaging cover as soon as possible to prevent the product performance from being mixed with other substances such as waterproof grade. Store in a cool, dry place, keep the container tightly closed, and avoid contact with oxides. Do not inhale dust and avoid contact with skin and mucous membranes. Smoking, eating and drinking are prohibited in the workplace. After work, take a shower and change clothes. Store contaminated clothes separately and use them after washing. Maintain good hygiene habits.