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Dibutyltin dichloride

CAS Number
683-18-1
EC Number
211-670-0
Chemical Formula
C8H18Cl2Sn
Molecular Weight
303.84 g/mol

Description

Dibutyltin dichloride (CAS 683-18-1 ), also known as dibutyltin chloride, is an organotin compound used industrially as a catalyst and stabilizer precursor across polymer and coating systems. It functions primarily as a reactive intermediate in the synthesis of other dibutyltin derivatives and as a direct catalyst in condensation and polymerization processes for various industrial applications. In PVC and polymer processing, it serves as a precursor to heat stabilizer packages that prevent thermal degradation during compounding and extrusion, ensuring material integrity during high-heat manufacturing. Coating formulators use it as a catalyst in moisture-cure urethane and silicone systems, where it accelerates crosslinking at ambient conditions to improve the efficiency of the curing process. In adhesive and sealant manufacturing, it promotes cure in tin-catalyzed RTV silicone formulations, directly affecting open time and bond development for high-performance industrial bonding solutions. Printing and packaging applications rely on it within specialty ink and lacquer systems requiring controlled polymerization initiation to achieve specific finish and durability requirements for the end user. Dibutyltin dichloride is supplied as a white to off-white crystalline solid. It is available in technical grade, with purity levels typically at 95% or higher depending on the specific supplier specification. Packaging is offered in drum and bulk quantities suited to industrial procurement volumes. This ensures a reliable supply chain for large-scale manufacturing operations requiring consistent chemical inputs. Contact us for supply of Dibutyltin dichloride Request Quote

Other Names (Synonyms)

Di-n-butyltin dichloride | Dibutyltin chloride | Stannane, dibutyldichloro- | Dibutylstannium dichloride

Key Technical Features

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

Physical Properties

Melting Point43 °C
Boiling Point135 °C @ Press: 10 Torr
Density1.4
Flash Point>230 °F
Appearancewhite to beige crystalline low melting mass
ColorWhite
FormCrystalline
Water Solubility320 mg/L, hydrolises in hot water
Vapor Pressure0.0016 hPa (25 °C)
Refractive Index1.4991

Safety & Handling

Danger
GHS05· CorrosiveGHS06· ToxicGHS08· Health HazardGHS09· EnvironmentGHS07· Irritant

Hazard Statements

H301Toxic if swallowed
H312Harmful in contact with skin
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H318Causes serious eye damage
H330Fatal if inhaled
H341Suspected of causing genetic defects
H360May damage fertility or the unborn child
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
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.
P271Use only outdoors or in a well-ventilated area.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P284In case of inadequate ventilation wear respiratory protection.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P320Specific treatment is urgent (see … on this label).
P321Specific treatment (see … on this label).
P330Rinse mouth.
P363Wash contaminated clothing before reuse.
P391Collect spillage.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P316Get emergency medical help immediately.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P331Rinse mouth. Do NOT induce vomiting.
P354IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29310095
UN Number2928
ADR Class6.1
Packing GroupII
Storage Class6.1A - Combustible acute toxic Cat. 1 and 2 very toxic hazardous materials
WGK (Germany)3