Cradle to Consumer
Identity ID
e9de78f4-045f-4797-9176-3fc91be7965d
Materials
Associated ID
c44b8595-5c55-4086-8038-0875354e7aad
Included activities starts
Included activities ends
Description
This dataset is a market dataset representing the consumption market of the region. The dataset includes the transport of the product from the gate to the consumption end, and the transport service is calculated based on the transport situation of the product in the region. Dioctyl sebacate is an excellent cold-resistant plasticizer, particularly suitable for cold-resistant wire and cable compounds, artificial leather, films, sheets, plates and other products, and is commonly used in plastics processing, rubber, coatings and adhesives, medical devices and other fields. Dioctyl sebacate is modeled as a pure substance, and when modeling this substance the user needs to add a solvent of their choice in the model; this dataset includes the main raw and auxiliary materials, energy, waste and air emissions of the production process, where the preliminary treatment of wastewater in the utility process and the waste gas treatment process are included within the dataset boundary, while infrastructure such as production equipment manufacturing and plant construction is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activity of this product includes esterification reaction, stripping and dealcoholization, pressure filtration and refining and other process steps.
Activity Description
The production activities of this product include esterification reaction, gas stripping dealcoholization, filter press refining and other processes.
Process Description
Dioctyl sebacate (DOS for short), also known as bis-2-ethylhexyl sebacate, has chemical formula C26H50O4 and CAS number 2432-87-3. It is a colorless and transparent oily liquid under normal temperature and pressure. It is odorless and tasteless, has extremely low volatility, has a freezing point of about -40°C, and has excellent low-temperature fluidity. It is insoluble in water, easily soluble in most organic solvents such as ethanol, ether, toluene, and esters, and has excellent compatibility with polymer materials such as polyvinyl chloride (PVC), rubber, and cellulose. It is chemically stable, resistant to hydrolysis, aging, and extraction, and has excellent low-temperature toughness and heat resistance. It is an environmentally friendly cold-resistant plasticizer and does not contain phthalate esters. Industrially, it is mainly used as a cold-resistant plasticizer in plastic processing, rubber, coatings and adhesives, and medical equipment. It can also be used to prepare cold-resistant films, artificial leather, cable materials, etc. It is especially suitable for scenes with strict requirements for low-temperature performance, low volatility, and environmental protection.
Time period
2019
2026
Geography
China,Fujian
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
1. Esterification reaction: Pump excess octanol into the esterification reaction kettle, put in a certain amount of sebacic acid, and add an appropriate amount of catalyst, heat to 200-220°C under normal pressure, stir and react for 6-10 hours until the esterification is completed, then statically stratify and recover the catalyst for use.
2. Stripping and dealcoholization: After the esterification is completed, the esterification kettle is first heated to about 180°C and a vacuum is drawn to recover octanol. The materials in the kettle are pumped into the post-treatment kettle for stripping and dealcoholization. Steam is introduced and stripped at 120-180°C for 45min-60min. The alcohol that has not been removed is taken out with the water vapor, and the octanol is recovered through condensation for reuse.
3. Refining by filtration: Add a small amount of diatomaceous earth to the material, and remove the remaining catalyst and other impurities through filtration.
Main chemical reaction formula: HOOC-(CH2)8-COOH + 2C8H17OH —— (CH2)8(COOC8H17)2 + 2H2O