Cradle to Consumer
Identity ID
42ecb04d-97d5-4144-8744-24d3f99bc890
Materials
Associated ID
e6d367bf-c805-4a06-ab05-ea8e824ef4bb
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 consumer end, and the transport service is calculated according to the transport situation of this product in this region. Dioctyl adipate, as a typical cold-resistant plasticiser, is commonly used in cold-resistant agricultural films, cable coverings, artificial leather, outdoor water pipes and frozen food packaging films, and can also be used as a low-temperature plasticiser for various synthetic rubbers and as a cold-resistant plasticiser for resins such as nitrocellulose, ethyl cellulose, polystyrene and vinyl chloride copolymers. Dioctyl adipate is modelled as a pure substance; when modelling this substance the user needs to add a solvent of their choice in the model; the dataset contains the main raw and auxiliary materials, energy, waste and atmospheric emissions of the production process, in which the preliminary treatment of wastewater in the auxiliary units and the waste gas treatment process are included within the dataset boundary, and infrastructure such as the manufacture of production equipment and the construction of plant buildings is not included within the dataset boundary; the data inventory is formed by merging data from multiple sources; the production activities of this product include esterification reaction, vacuum de-alcoholisation, neutralisation and water washing, stripping and filtration.
Activity Description
The production activities of this product include esterification reaction, vacuum dealcoholization, neutralization and water washing, steam stripping, filtration and other processes.
Process Description
Dioctyl adipate, also known as bis(2-ethylhexyl) adipate, has the chemical formula C22H42O4 and CAS number 123-79-5. It is a colorless or slightly yellow oily liquid with a characteristic odor. Its boiling points are 210°C at 0.67 kPa, 175°C at 0.27 kPa, and 167°C at 0.130 kPa; its relative density is 0.990 at 20/4°C, its refractive index is 1.4470, and its flash point is 193°C. It is soluble in most organic solvents, slightly soluble in glycols, and insoluble in water. Dioctyl adipate is an effective cold-resistant plasticizer for polyvinyl chloride. It has high plasticizing efficiency, shows little discoloration when heated, and provides good low-temperature flexibility, light resistance, water resistance, lubricity during processing, and a pleasant feel. It is commonly used with phthalates in cold-resistant agricultural films, cable sheathing, artificial leather, outdoor water pipes, and frozen-food packaging films. It is also used as a low-temperature plasticizer for various synthetic rubbers and as a cold-resistant plasticizer for resins such as nitrocellulose, ethyl cellulose, polystyrene, and vinyl chloride copolymers.
Time period
2019
2026
Geography
China,Hubei
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The production of dioctyl adipate uses adipic acid and 2-ethylhexanol as raw materials and tetrabutyl titanate as a catalyst. Adipic acid, 2-ethylhexanol, and tetrabutyl titanate are added to a reaction kettle for esterification. The mixture undergoes vacuum dealcoholization. After the crude product is cooled, sodium hydroxide solution is added for neutralization, followed by a water washing step. The washed crude product is then heated, and steam is used to extract excess octanol and water under vacuum. The recovered octanol is reused, while the water passes through a refining tower, gas-liquid separator, and condenser before returning to the oil-water separator. After stripping, the crude product is filtered to obtain the finished product. Main chemical reaction: HOOC-(CH2)4-COOH + 2C8H17OH → (CH2)4(COOC8H17)2 + 2H2O.