Dioctyl phthalate

Dioctyl phthalate (DOP) is a versatile chemical compound widely used as a plasticizer in various applications, particularly in the production of synthetic rubber and plastics[1][2][3]. Its broad range of characteristics, including high plasticizing efficiency, low volatility, UV-resistance, water-extracting proof, cold-resisting property, softness, and electric property, make it suitable for manufacturing a wide range of products[1].

Production and Structure

DOP is produced commercially by the reaction of excess 2-ethylhexanol with phthalic anhydride in the presence of an acid catalyst[2]. It has a formula of C24H38O4 and is classified and labeled according to the Globally Harmonized System (GHS)[3].

Uses

DOP is used as a softening agent to make synthetic rubber easier to rebound and harder to undergo form change under pressure[1]. It is also widely used in PVC and ethyl cellulose resins to make plastic film, imitation leather, electric wire, and other products[1]. Additionally, DOP is used as a hydraulic fluid and as a dielectric fluid in capacitors, and it finds use as a solvent in glowsticks[2].

Availability and Suppliers

DOP is available in various grades, packaging, and quantities from suppliers such as GJ Chemical and Univar Solutions[3][4]. It can be purchased in bulk or smaller LTL quantities, and suppliers offer technical grades in liquid form, such as a 444 lb drum[4].

Safety and Health Concerns

The National Institute for Occupational Safety and Health (NIOSH) provides guidelines for handling DOP, which is classified as a combustible liquid with a flash point of 420°F[5]. It is recommended to use personal protective equipment, including respirators, and to follow first aid procedures in case of exposure[5]. The European Union has also raised concerns about the use of phthalates, including DOP, in certain applications due to potential health risks[2].

In summary, dioctyl phthalate is a widely used plasticizer with a broad range of applications in the production of synthetic rubber and plastics. Its availability from various suppliers and its cost-effectiveness make it a popular choice in the industry. However, its use also raises safety and health concerns, and proper handling and precautions are necessary to minimize risks.

Citations:

[1] https://www.solventsandpetroleum.com/dioctyl-phthalate-dop.html

[2] https://en.wikipedia.org/wiki/Bis%282-ethylhexyl%29_phthalate

[3] https://gjchemical.com/chemical-distributor/dioctyl-phthalate-dop-supplier-195.aspx

[4] https://www.univarsolutions.com/dioctyl-phthalate-3310000

[5] https://www.cdc.gov/niosh/npg/npgd0236.html