Cradle to Gate
Identity ID
ec83c191-7582-4ffe-a132-1efd35e35602
Materials
Associated ID
6138085e-375f-4b7a-baa7-ec0ad91dc478
Included activities starts
Included activities ends
Description
Diisononyl phthalate is used as a plasticizer, mainly applied in PVC processing, rubber, coatings and adhesives, fine chemicals and other fields, and is especially suitable for the production of plastic products with relatively high requirements for heat resistance, migration resistance and environmental safety. Diisononyl phthalate is modeled as a pure substance; when modeling this substance, users need to add a solvent of their choice to the model. This dataset includes the main raw and auxiliary materials, energy, waste and atmospheric emissions of the production process, in which the wastewater preliminary treatment in the utility processes and the waste gas treatment process are included within the dataset boundary, while infrastructure such as the manufacture of production equipment and plant construction is not included within the dataset boundary; the inventory is formed by merging data from multiple sources; the production activities of this product include esterification, dealcoholization, neutralization and water washing, stripping and drying, filtration, wastewater treatment and other process steps.
Activity Description
The production activities of this product include esterification, dealcoholization, neutralization and water washing, stripping and drying, filtration, wastewater treatment and other processes.
Process Description
The chemical formula of diisononyl phthalate (DINP for short) is C26H42O4, CAS number 28553-12-0. It is a colorless and transparent oily liquid at room temperature and pressure. It is almost odorless and has extremely low volatility. It has a freezing point of about -48°C and a boiling point of about 405°C. It has excellent low-temperature fluidity and heat resistance. Slightly soluble in water, easily soluble in most organic solvents such as ethanol, ether, toluene, and mineral oil. It has excellent compatibility with polymer materials such as polyvinyl chloride (PVC), synthetic rubber, and cellulose resins. It has stable chemical properties, is resistant to hydrolysis, aging, and extraction, and its plasticizer migration rate is much lower than that of short-chain phthalate ester products. Industrially, it is mainly used as a plasticizer in PVC processing and the rubber industry; it is also used in coatings, adhesives, and fine chemicals. It can also be used to prepare cold-resistant cable materials, building waterproofing materials, etc. It is especially suitable for plastic product production scenarios that have high requirements for heat resistance, migration resistance, and environmental safety.
Time period
2016
2026
Geography
China
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
Using isononyl alcohol and phthalic anhydride as raw materials, it includes esterification, dealcoholization, neutralization and water washing, stripping and drying, filtration, wastewater treatment and other processes:
1. Esterification: Under normal pressure, heating and the presence of concentrated sulfuric acid, esterification reaction occurs between phthalic anhydride and isononyl alcohol to generate diisononyl phthalate. During the reaction process, the water generated by the reaction is removed by heating to ensure the normal progress of the esterification reaction.
2. Neutralization: Add soda ash to neutralize the sulfuric acid and part of the monononyl phthalate in the feed liquid.
3. Dealcoholization: Remove nonanol and water from the ester through vacuum distillation.
4. Alcohol recovery: Through atmospheric pressure heating distillation, nonanol in alcohol-containing water sent from each process is recovered.