TRIS(2-ETHYLHEXYL) PHOSPHATE

Tris(2-ethylhexyl) phosphate is a trialkyl phosphate.
Tris(2-ethylhexyl) phosphate is used as a phosphorous flame retardant. 
Used as a plasticizer in the preparation of a new potentiometric membrane sensor.

CAS:    78-42-2
MF:    C24H51O4P
MW:    434.63
EINECS:    201-116-6

Synonyms
PHOSPHORIC ACID TRIS(2-ETHYLHEXYL) ESTER;PHOSPHORIC ACID TRIOCTYL ESTER;TRIS(2-ETHYLHEXYL) PHOSPHATE;TRI(2-ETHYLHEXYL)PHOSPHATE;TRIOCTYL PHOSPHATE;'TRIOCTYL' PHOSPHATE;1-Hexanol, 2-Ethyl-, phosphate;2-ethyl-1-hexanophosphate;Tris(2-ethylhexyl) phosphate;78-42-2;Tris(2-ethylhexyl)phosphate;Phosphoric acid, tris(2-ethylhexyl) ester;1-Hexanol, 2-ethyl-, phosphate;Tri(ethylhexyl) phosphate;Tris(2-ethylhexy)phosphate;CCRIS 615;HSDB 2562;UNII-BQC0BKB72S;Amgard TOF;EINECS 201-116-6;Tris-2(2-ethylhexyl)fosfat;Tris-2(2-ethylhexyl)fosfat [Czech];BRN 1715839;DTXSID0021414;AI3-07852;Tris(2-ethylhexl)phosphate;NSC-407921;Phosphoric acid, tris(2-ethylhexyl)ester;Phosphoric Acid Tris(2-ethylhexyl) Ester;DTXCID801414;2-Ethylhexanol phosphate (3:1);EC 201-116-6;4-01-00-01786 (Beilstein Handbook Reference);TRIS(2-ETHYLHEXYL) PHOSPHATE [HSDB];Tris-2(2-ethylhexyl)fosfat (Czech);Tris(2ethylhexyl)fosfat;2Ethyl1hexanol phosphate;tri(2ethylhexyl)phosphate;Tris(2ethylhexy)phosphate;Tris(2ethylhexyl)phosphate;Tri(2ethylhexyl) phosphate;tris(2ethylhexyl) phosphate;DTXCID606246;2Ethylhexanol, phosphate triester;1-HEXANOL, 2-ETHYL, PHOSPHATE;OCTYL PHOSPHATE ((C8H17O)3PO);Phosphoric acid, tris(2ethylhexyl) ester;1-Hexanol, 2-ethyl-, phosphate (6CI);1hexanol, 2ethyl, phosphate;1hexanol, 2ethyl, phosphate (6ci);ai3-05904;ccris 4886;dtxsid6026246;einecs 217-305-1;gtvwrxdrkahead-uhfffaoysa-n;inchi=1/c24h51o4p/c1-7-13-16-22(10-4)19-26-29(25,27-20-23(11-5)17-14-8-2)28-21-24(12-6)18;15-9-3/h22-24h,7-21h2,1-6h;tri-n-octylphosphate;tris(n-octyl) phosphate;unii-0lv8vw3yjz;wvpgxjolggfbcr-uhfffaoysa-n;Disflamoll TOF;Kronitex TOF;Flexol TOF;Flexol plasticizer TOF;Tri(2-ethylhexyl)phosphate;Tri(2-ethylhexyl) phosphate;2-Ethyl-1-hexanol phosphate;Tris(ethylhexyl) phosphate;NCI-C54751;TEHP;Phosphoric acid, tris(ethylhexyl) ester;2-Ethylhexanol, phosphate triester;Tris-(2-ethylhexyl)fosfat;NSC 407921;BQC0BKB72S;TOF;Triethylhexyl phosphate;CAS-78-42-2;Tris-(2-ethylhexyl)fosfat [Czech];MFCD00009491;'Trioctyl' phosphate;1-Hexanol, phosphate;Trioctyl Phosphate (TOP);SCHEMBL35485;MLS002415769;Phosphoric Acid Trioctyl Ester;CHEMBL1562290;CHEBI:181994;HMS3039O17;Tox21_201369;Tox21_300321;NSC407921;Tris(2-ethylhexyl) phosphate, 97%;AKOS015843194;CS-W009670;HY-W008954;NCGC00091821-01;NCGC00091821-02;NCGC00091821-03;NCGC00254160-01;NCGC00258921-01;SMR001370923;NS00002729;P1022;WLN: 4Y2&1OPO&O1Y4&2&O1Y4&2;Q2454094;Tris(2-ethylhexyl) phosphate, Selectophore(TM), >=99.0%

Tris(2-ethylhexyl) phosphate, a clear, viscous liquid, is used as a component of vinyl stabilizers, grease additives, and flame-proofing compositions; however, it is used primarily as a plasticizer for vinyl plastic and synthetic rubber compounds.
Tris(2-ethylhexyl) phosphate has been employed as a specialty flameretardant plasticizer for vinyl compositions where low temperature flexibility is critical, eg, in military tarpaulins. 
Tris(2-ethylhexyl) phosphate can be included in blends with general purpose p
Tris(2-ethylhexyl) phosphate is a clear colorless to pale yellow liquid with a slight sharp odor. 
Tris(2-ethylhexyl) phosphate is a clear colorless to pale yellow liquid with a slight sharp odor. 
Tris(2-ethylhexyl) phosphate phosphate is a trialkyl phosphate.
Tris(2-ethylhexyl) phosphate is an organic chemical compound in the organophosphate group. 
Tris(2-ethylhexyl) phosphate is a triakylphosphate.

Tris(2-ethylhexyl) phosphate has been widely used as a plasticizer, fire retardant and solvent. 
As a plasticizer, Tris(2-ethylhexyl) phosphate is used as a component of vinyl stabilizers, grease additives and flame-proofing compositions for vinyl plastic and
synthetic rubber compounds. 
As a fire retardant, Tris(2-ethylhexyl) phosphate is used in consumer products, such as clothing. 
As a solvent, Tris(2-ethylhexyl) phosphate is used as a co-solvent to produce hydrogen peroxide. 
The world production of Tris(2-ethylhexyl) phosphate was estimated to be between 1000 to 5000 tons per year. 
Occupational exposure may occur through inhalation and dermal contact with TEHP at workplaces. 
The general population may be exposed to Tris(2-ethylhexyl) phosphate via ingestion of contaminated food
and drinking water or via dermal contact with TEHP-treated clothing.

Tris(2-ethylhexyl) phosphate Chemical Properties
Melting point: -70°C
Boiling point: 215 °C4 mm Hg(lit.)
Density: 0.92 g/mL at 20 °C(lit.)
Vapor pressure: 2.1 mm Hg ( 20 °C)
Refractive index: n20/D 1.444(lit.)
Fp: >230 °F
Storage temp.: Store below +30°C.
Solubility: <0.001g/l
Form: Liquid
Specific Gravity: 0.93
Color: Colourless
PH: 7 (H2O, 20℃)
Water Solubility: <0.1 g/100 mL at 18 ºC
BRN: 1715839
CAS DataBase Reference: 78-42-2(CAS DataBase Reference)
NIST Chemistry Reference: Tris(2-ethylhexyl) phosphate (3:1)(78-42-2)
EPA Substance Registry System: Tris(2-ethylhexyl) phosphate (78-42-2)

Tris(2-ethylhexyl) phosphate, a clear, viscous liquid, is used as a component of vinyl stabilizers, grease additives, and flame-proofing compositions; however, it is used primarily as a plasticizer for vinyl plastic and synthetic rubber compounds.
Tris(2-ethylhexyl) phosphate has been employed as a specialty flameretardant plasticizer for vinyl compositions where low temperature flexibility is critical, eg, in military tarpaulins. 
Tris(2-ethylhexyl) phosphate can be included in blends with general purpose plasticizers such as phthalate esters to improve low temperature flexibility.
Tris(2-ethylhexyl) phosphate is a colourless, viscous liquid with a faint, piercing smell. Tris(2-ethylhexyl) phosphate has a viscosity of 15 mPas at 20 °C.

Reactivity Profile    
Tris(2-ethylhexyl) phosphate is incompatible with oxidizing materials. 
Tris(2-ethylhexyl) phosphate may soften or deteriorate certain plastics and elastomers. 
Tris(2-ethylhexyl) phosphate is incompatible with cellulose acetate and cellulose acetate butyrate.

Uses
Due to its properties (including that it is a mild biocide), Tris(2-ethylhexyl) phosphate is used in a variety of applications:

as a plasticizer in polymers (PVC, PU, NBR and others) giving good cold flexibility and flame retarding properties
as a carrier for pigments and dyes used in colouring polymers
as a component in cutting fluid[5]
as a component in release agents, used in the metal casting industry
as a solvent in hydrogen peroxide synthesis