Bis(lauroyloxy)dioctyltin
[CAS# 3648-18-8]

Identification

• Classification: Organic raw materials >> Organometallic compound >> Organotin
• Name: Bis(lauroyloxy)dioctyltin
• Synonyms: Dioctyldilauryltin
• Molecular Formula: C₄₀H₈₀O₄Sn
• Molecular Weight: 743.77
• CAS Registry Number: 3648-18-8
• EC Number: 222-883-3
• SMILES: CCCCCCCCCCCC(=O)O[Sn](CCCCCCCC)(CCCCCCCC)OC(=O)CCCCCCCCCCC

Properties

• Boiling Point: 647.5±24.0 ºC (760 mmHg), Calc.^*
• Flash Point: 345.4±22.9 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software.

Safety Data

• Hazard Symbols: GHS05;GHS08 Danger
• Hazard Statements: H314-H318-H360-H360D-H361-H371-H372-H373-H412
• Precautionary Statements: P203-P260-P264-P264+P265-P270-P273-P280-P301+P330+P331-P302+P361+P354-P304+P340-P305+P354+P338-P308+P316-P316-P317-P318-P319-P321-P363-P405-P501

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Specific target organ toxicity - repeated exposure	STOT RE	1	H372
Reproductive toxicity	Repr.	2	H361
Chronic hazardous to the aquatic environment	Aquatic Chronic	3	H412
Specific target organ toxicity - repeated exposure	STOT RE	2	H373
Reproductive toxicity	Repr.	1B	H360D
Skin corrosion	Skin Corr.	1C	H314
Serious eye damage	Eye Dam.	1	H318
Specific target organ toxicity - single exposure	STOT SE	2	H371
Reproductive toxicity	Repr.	1B	H360
Chronic hazardous to the aquatic environment	Aquatic Chronic	4	H413
Acute toxicity	Acute Tox.	4	H302
Acute toxicity	Acute Tox.	4	H332
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410
Eye irritation	Eye Irrit.	2	H319
Reproductive toxicity	Repr.	1B	H360D

Discovory and Applicatios

Bis(lauroyloxy)dioctyltin, often referred to as DLTS, is an organotin compound notable for its unique structure and diverse applications in the field of materials science and industrial chemistry. Comprising two octyl groups and two lauroxy groups attached to a central tin atom, this compound exhibits properties that make it valuable as a stabilizer and additive in various formulations.

The discovery of bis(lauroyloxy)dioctyltin can be traced back to the mid-20th century when researchers began to explore the potential of organotin compounds in polymer chemistry. The primary motivation behind the development of DLTS was to create effective heat stabilizers for polyvinyl chloride (PVC) and other polymers. Organotin compounds were found to enhance the thermal stability of these materials while providing resistance to degradation under processing conditions, leading to the exploration of DLTS as a viable candidate.

One of the primary applications of bis(lauroyloxy)dioctyltin is as a heat stabilizer in PVC formulations. When incorporated into PVC products, DLTS helps to prevent discoloration and loss of mechanical properties during processing and end-use. The compound’s ability to stabilize PVC against thermal degradation is particularly important in applications such as flooring, pipes, and cable insulation, where long-term durability and performance are essential. By minimizing the degradation of PVC, DLTS contributes to the longevity and effectiveness of these products in various environmental conditions.

In addition to its role as a stabilizer, bis(lauroyloxy)dioctyltin is also utilized as a biocide in agricultural applications. Its antimicrobial properties make it effective against a range of microorganisms, including fungi and bacteria. As a result, DLTS is incorporated into agricultural formulations to protect crops from pests and diseases. This application is vital for enhancing agricultural productivity and ensuring food security, especially in regions susceptible to plant pathogens.

Furthermore, bis(lauroyloxy)dioctyltin is explored for its potential in the development of specialty coatings and adhesives. Its unique chemical structure allows it to function as a compatibilizer in polymer blends, promoting the adhesion between dissimilar materials. This property is particularly beneficial in applications requiring strong bonds, such as in automotive and construction industries, where performance and durability are critical.

Despite its numerous advantages, the use of bis(lauroyloxy)dioctyltin must be approached with caution due to potential environmental and health concerns associated with organotin compounds. Regulatory agencies have established guidelines to minimize exposure and ensure safe handling during production and application. Ongoing research is focused on developing safer alternatives and optimizing the performance of DLTS in various applications.

Recent studies have aimed to enhance the efficiency and environmental compatibility of bis(lauroyloxy)dioctyltin by exploring novel formulations and applications. Researchers are investigating ways to integrate DLTS into advanced materials and coatings that meet increasing demands for sustainability and performance. As industry standards evolve, there is a growing emphasis on finding balance between functionality and environmental impact.

The discovery and application of bis(lauroyloxy)dioctyltin illustrate its significance in modern materials science and industrial applications. Its roles as a heat stabilizer in PVC, biocide in agriculture, and compatibilizer in coatings underscore the compound's versatility. Continued research and innovation are essential to maximize the benefits of DLTS while addressing safety and environmental concerns.