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2. How is DBP used? - GreenFacts
The largest usage of DBP in general is as a plasticizers in resins and polymers such as polyvinyl chloride. Plasticizers are materials incorporated into a plastic in order to increase its workability and distendability.
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- What is DBP used for?
- Production has been steadily decreasing during the 1990’s. Over 75% of DBP is used as a plasticizer in polymers such as PVC, 14% is used in adhesives, 7% in printing inks and 3% in other miscellaneous uses, including sealants and grouting agents used in construction as well as consumer products such as cosmetics.
- How is di-n-butyl phthalate (DBP) produced?
- DBP is produced by the reaction of phthalic anhydride with n-butanol in the presence of concentrated sulphuric acid as a catalyst. Excess alcohol is recovered and recycled and the di-n-butyl phthalate is purified by vacuum distillation and/or activated charcoal.
- How much phthalic anhydride (DBP) is produced a year?
- There is a clear decreasing trend in the production of DBP: 49,000 t/a (1994) – 37,000 t/a (1997) – 26,000 t/a (1998). The production (>1,000 tonnes) of DBP in 1998 was located at three production sites in the EU. DBP is produced by the reaction of phthalic anhydride with n-butanol in the presence of concentrated sulphuric acid as a catalyst.
- How many producers of DBP are there in the EU?
- There are currently 3 producers of DBP in the European Union. The estimated production in the European Union was around 26 000 tonnes in 1998, over two-thirds of which was used in the EU. Production has been steadily decreasing during the 1990’s.
