| Identification | More | [Name]
Bis(2-ethylhexyl) phosphate | [CAS]
298-07-7 | [Synonyms]
2-ETHYL-1-HEXANOL HYDROGEN PHOSPHATE
BIS(2-ETHYLHEXYL) HYDROGEN PHOSPHATE
BIS(2-ETHYLHEXYL) PHOSPHATE
BIS(2-ETHYLHEXYL) PHOSPHORIC ACID
D-2-EHPA
DEPHA
DI(2-ETHYLHEXYL) PHOSPHATE
DI-(2-ETHYLHEXYL)PHOSPHORIC ACID
DI(2-ETHYLHEXY)PHOSPHORIC ACID
DIISOOCTYL ACID PHOSPHATE
Diisooctyl phosphate
DIOCTYL PHOSPHATE
'DIOCTYL' PHOSPHATE
HDEHP
PHOSPHORIC ACID BIS (2-ETHYLHEXYL) ESTER
PHOSPHORIC ACID DI(2-ETHYLHEXYL) ESTER
PHOSPHORIC ACID DIOCTYL ESTER
Bis(2-ethylhexyl)orthophosphoric acid
bis(2-ethylhexyl)orthophosphoricacid
dehpa | [EINECS(EC#)]
206-056-4 | [Molecular Formula]
C16H35O4P | [MDL Number]
MFCD00009492 | [Molecular Weight]
322.42 | [MOL File]
298-07-7.mol |
| Chemical Properties | Back Directory | [Appearance]
clear colorless to light yellow liquid | [Melting point ]
−60 °C(lit.)
| [Boiling point ]
48 °C (12 mmHg)
| [density ]
0.965 g/mL at 25 °C(lit.)
| [vapor pressure ]
<0.1 hPa (20 °C) | [refractive index ]
n20/D 1.443(lit.)
| [Fp ]
>230 °F
| [storage temp. ]
Store below +30°C. | [solubility ]
ethanol: soluble100mg/mL, clear | [form ]
Liquid | [pka]
1.47±0.50(Predicted) | [color ]
Colorless | [Specific Gravity]
0.974 | [PH]
3 (< 1g/l, H2O) | [Water Solubility ]
slightly soluble | [FreezingPoint ]
-60℃ | [BRN ]
1712988 | [Stability:]
Moisture Sensitive | [InChIKey]
SEGLCEQVOFDUPX-UHFFFAOYSA-N | [CAS DataBase Reference]
298-07-7(CAS DataBase Reference) | [NIST Chemistry Reference]
Bis(2-ethylhexyl)hydrogen phosphate(298-07-7) | [EPA Substance Registry System]
298-07-7(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
C | [Risk Statements ]
R21:Harmful in contact with skin.
R34:Causes burns. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S25:Avoid contact with eyes . | [RIDADR ]
UN 1902 8/PG 3
| [WGK Germany ]
1
| [RTECS ]
TB7875000
| [Autoignition Temperature]
255 °C | [TSCA ]
Yes | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
29190090 | [Hazardous Substances Data]
298-07-7(Hazardous Substances Data) | [Toxicity]
LD50 orally in Rabbit: 4940 mg/kg LD50 dermal Rabbit 1250 mg/kg |
| Hazard Information | Back Directory | [General Description]
Odorless light yellow liquid. Floats on water. | [Reactivity Profile]
Organophosphates, such as DI-(2-ETHYLHEXYL)PHOSPHORIC ACID, are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides. Mildly corrosive to most metals; may form flammable hydrogen gas [USCG, 1999]. | [Health Hazard]
Contact with liquid irritates eyes and may cause serious injury; consult an eye specialist. Also causes skin irritation on contact. Ingestion produces irritation similar to that caused by strong vinegar. | [Fire Hazard]
Special Hazards of Combustion Products: Irritating phosphorus oxides may be released. | [Chemical Properties]
clear colorless to light yellow liquid | [Uses]
Additive to lubrication oils, corrosion inhibitor, and antioxidant.
Used as extractant in the hydrometallurgical separation
of cobalt and nickel. Metal extraction and
separation, intermediate for wetting agents and detergents
. Feedstock for chemical synthesis; extraction
fluid for metal salts; cation extracting agent. | [Uses]
Extraction of metals.Bis(2-ethylhexyl) phosphate is used as a lubricant additive, corrosion inhibitor and a metal extractant. It is involved in the solvent extraction of uranium salts and rare earth metals. Iron(II) ions are extracted after reduction of Iron(III) ions. Further, it is used as a plasticizer and as a solvent in the synthesis of plastic. | [Production Methods]
Produced by chlorinating bis(2-ethylhexyl) phosphonate
to give the phosphate diester chloride, followed by hydrolysis,
or by saponification of tris(2-ethylhexyl) phosphate
. | [Flammability and Explosibility]
Nonflammable(100%) | [Purification Methods]
Contaminants of commercial samples include the monoester, polyphosphates, pyrophosphate, 2-ethylhexanol and metal impurities. Dissolve the acid in n-hexane to give an 0.8M solution. Wash this with an equal volume of M HNO3, then with saturated (NH4)2CO3 solution, with 3M HNO3, and twice with water [Petrow & Allen Anal Chem 33 1303 1961]. Similarly, the impure sodium salt, after scrubbing with pet ether, is acidified with HCl and the free organic acid is extracted into pet ether and purified as above [Peppard et al. J Inorg Nucl Chem 7 231 1958], or as described by Stewart & Crandall [J Am Chem Soc 73 1377 1951]. It can be purified via its copper salt [McDowell et al. J Inorg Nucl Chem 38 2127 1976]. [Beilstein 1 IV 1796.] |
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