DIOCTYL PHTHALATE, DOP, ไดออกทิลพทาเลต, ดีโอพี
ไดออกทิลพทาเลต, ไดออกทิลธาเลต หรือ ดีโอพี, Dioctyl Phthalate, DOP เป็นสารพลาสติไซเซอร์ปฐมภูมิ สำหรับพีวีซี พลาสติก, ยาง และงานอุตสาหกรรมต่างๆ อย่างกว้างขวาง
Dioctyl phthalate, DOP, Di-sec-octyl phthalate, Bis(2-ethylhexyl)phthalate, DEHP, Dioktilftalát, Di-sec-octylphthalate, CAS: 117-81-7, Dioctyl phthalate is one of the most important plasticizer, mainly used in the processing of PVC resin and high polymers such as chemical resin, acetic acid resin, ABS resin, rubber and in the production of lacquer, dyestuff and dispersant. It is also used as a hydraulic and dielectric fluid in capacitors and as a solvent in lightsticks.
PROPERTIES
Dioctyl phthalate (DOP, DEHP), is clear, colourless, viscous liquid with a slight, characteristic odor. Soluble in ethanol, ether, mineral oil and the majority of organic solvents. Immiscible with water, resistant to hydrolysis and air oxygen activity.
Its high plasticizing efficiency, fusion rate, visosity, low volatility, UV-resisting property, water-extracting proof, cold-resisting property, and also good softness and electric property found a lot of applications in many offshoots of the industry.
APPLICATIONS
PLASTIC INDUSTRY
PLASTICIZERS
Dioctyl phthalate can be used as a softening agent , such as to make the product easier to rebound and harder to undergo form change under pressure, without affecting of the plastics. DOP possesses its good plasticizing properties thanks to the ability to make the long polimers molecules to slide against one another.
It is extensively used in processing polyvinyl choride and ethylcellulose resins to produce plastic film, imitation leather, electric wire, cable wearer, sheet, planet, mould plastic products and used in nitrocellulose paints. It has the applications in the industry of automotive, building and construction material, flooring, medical device.
WOOD COATING
It is used in the industrial wood coating to enhance the performance properties of the wood coatings formulations.
MEDICAL DEVICES
Dioctyl phthalate is used a plasticiser in the manufacture of medical and sanitary products, such as blood bags and dialysis equipment. It has a further and unique role in blood bags because it actually helps to prolong the life of the blood itself. DEHP also stabilises the membranes of red blood cells enabling blood product storage in PVC blood bags for several weeks.
Plastics may contain from 1% to 40% of DOP.
Other uses:
It is also used as a hydraulic fluid and as a dielectric fluid in capacitors.
DOP also finds the application as a solvent in lightsticks.
Bis(2-ethylhexyl) phthalate (di-2-ethylhexyl phthalate, DEHP; dioctyl phthalate, DOP), is an organic compound with the formula C6H4(C8H17COO)2. This compound is the most common of the class of phthalate plasticizers, accounting for an almost 54% market share in 2010.[1] It is the diester of phthalic acid and the branched-chain 2-ethylhexanol. This colourless viscous liquid is soluble in oil, but not in water. The process entails the reaction of phthalic anhydride with 2-ethylhexanol:
C6H4(CO)2O + 2 C8H17OH → C6H4(CO2 C8H17)2 + H2O
Approximately three billion kilograms are produced annually.
2-Ethylhexanol is chiral, and the resultant DEHP consists of a mixture of R,R-, S,S-, and R,S- isomers (left). Due to its suitable properties and the low cost, DEHP is widely used as a plasticizer in manufacturing of articles made of PVC. Plastics may contain 1% to 40% of DEHP. It is also used as a hydraulic fluid and as a dielectric fluid in capacitors. DEHP also finds use as a solvent in glowsticks.
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