Trioctylphosphine oxide

Product Name: Trioctylphosphine oxide
CAS No.: 78-50-2
Chemical Name: Trioctylphosphine oxide
Synonyms: TOPO;TOPO(R);DKSI031;(Oct)3PO;CYANEX 921;DKFELEX0081;hostarexpx324;HISHICOLIN PO-8;trioctylphosphinoxide;trioctyl-phosphineoxid
CBNumber: CB3268225
Molecular Formula: C24H51OP
Formula Weight: 386.63
MOL File: 78-50-2.mol

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Trioctylphosphine oxide Property

Melting point:: 50-52 °C(lit.)
Boiling point:: 201-202 °C2 mm Hg(lit.)
Density: 0,88 g/cm³
vapor pressure: 0.004Pa at 50℃
Flash point:: >230 °F
storage temp.: Store below +30°C.
solubility: <1g/l
form: Crystalline Powder, Crystals or Flakes
color: White to slightly yellow
Water Solubility: Insoluble
BRN: 1796648
Stability:: Stable. Incompatible with strong oxidizing agents.
LogP: 9.54
CAS DataBase Reference: 78-50-2(CAS DataBase Reference)
EPA Substance Registry System: Phosphine oxide, trioctyl- (78-50-2)

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Safety

Hazard Codes: Xi,Hazard
Risk Statements: 38-41-50/53-34
Safety Statements: 26-36/39-39-61-60-45-36/37/39
RIDADR: 3261
WGK Germany: 2
RTECS: SZ1662500
Autoignition Temperature: 270 °C
TSCA: Yes
PackingGroup: II
HS Code: 29310095
HS Code: 32019090
Toxicity: LD50 orally in Rabbit: > 10000 mg/kg LD50 dermal Rat 2830 mg/kg

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H315Causes skin irritation

H318Causes serious eye damage

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 223301
Product name: Trioctylphosphine oxide
Purity: ReagentPlus , 99%
Packaging: 5g
Price: $53.4
Updated: 2024/03/01

Sigma-Aldrich

Product number: 00676
Product name: Trioctylphosphine oxide
Purity: for extraction analysis, ≥98.5%
Packaging: 10g
Price: $98.8
Updated: 2024/03/01

Sigma-Aldrich

Product number: 8.14868
Product name: Trioctylphosphinoxide
Purity: for synthesis
Packaging: 25g
Price: $51.6
Updated: 2022/05/15

Sigma-Aldrich

Product number: 8.14868
Product name: Trioctylphosphinoxide
Purity: for synthesis
Packaging: 100g
Price: $204
Updated: 2022/05/15

TCI Chemical

Product number: T0504
Product name: Tri-n-octylphosphine Oxide
Purity: >95.0%(GC)
Packaging: 25g
Price: $40
Updated: 2024/03/01

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Trioctylphosphine oxide Chemical Properties,Usage,Production

Chemical Properties

white crystalline powder

Uses

Tri-n-octylphosphine oxide is a solvent used in the extraction of metals, especially uranium, zirconium and hafnium. It is also used as an auxiliary reagent in the solvent extraction of metals. It is also used to extract hydrogen bonding organic compounds. Further, it is useful as a capping ligand for the production of quantum dots, such as those consisting of cadmium selenide.

Uses

Catalyst in:

Preparation of tetradentate planar-chiral hydroxy-substituted ferrocenecarboxaldimine Schiff base ligands
Reactions of allyl esters with hydrosilanes
Asymmetric cyanosilylation of aldehydes
Preparation of chlorothiol formates from thiols and phosgene

Uses

Trioctylphosphine oxide (TOPO) is most commonly used as the solvent due to its high boiling point and chemical stability, and its ability to prevent particle aggregation via coordination to the NP surface. trioctylphosphine oxide is a frequently used surfactant, starts to decompose at around 425°C.
The industrial applications of trioctylphosphine oxide, make use of its complexing powers with metals and with hydrogen donor organic compounds. Commercial uses as a solvent extraction reagent are in the recovery of uranium from wet process phosphoric acid and in the recovery of byproduct acetic acid and furfural generated during sulphite wood pulping.
TOPO is a widely used chemical compound in nanocrystal synthesis, for the removal of heavy metals, and the removal of toxins in waste water. TOPO is often used as a ligand stabilizer for colloids in traditional thermal decomposition synthetic techniques.
trioctylphosphine oxide became a nearly irreplaceable solvent (mp 51-52°C) for high-temperature preparation of various type of nanocomposites. TOPO has a very high boiling point (411°C) which is an important prerequisite for the homogeneous nucleation and good crystallinity of the nanoparticles.

General Description

Visit our Sensor Applications portal to learn more.

Flammability and Explosibility

Non flammable

Purification Methods

Mason, McCarty and Peppard [J Inorg Nuclear Chem 24 967 1962] stirred a 0.1M solution in *benzene with an equal volume of 6M HCl at 40o in a sealed flask for 48hours, then washed the *benzene solution successively with water (twice), 5% aqueous Na2CO3 (three times) and water (six times). The *benzene and water were then evaporated under reduced pressure at room temperature. Zingaro and White [J Inorg Nucl Chem 12 315 1960] treated a pet ether solution with aqueous KMnO4 (to oxidise any phosphinous acids to phosphinic acids), then with sodium oxalate, H2SO4 and HCl (to remove any manganese compounds). The pet ether solution was slurried with activated alumina (to remove phosphinic acids), filtered, evaporated and the residue was recrystallised from pet ether or cyclohexane at -20o. It can also be recrystallised from EtOH. [Beilstein 4 IV 3466.]

Trioctylphosphine oxide Preparation Products And Raw materials

Raw materials

Preparation Products

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Trioctylphosphine oxide Suppliers

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View Lastest Price from Trioctylphosphine oxide manufacturers

Hebei Weibang Biotechnology Co., Ltd

Product: Trioctylphosphine oxide 78-50-2
Price: US $0.00-0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 500000kg
Release date: 2024-10-30

Hebei Yanxi Chemical Co., Ltd.

Product: Trioctylphosphine oxide 78-50-2
Price: US $0.00-0.00/kg
Min. Order: 1kg
Purity: 0.99
Supply Ability: 100tons
Release date: 2023-09-25

Hebei Chuanghai Biotechnology Co,.LTD

Product: Trioctylphosphine oxide 78-50-2
Price: US $9.00/KG
Min. Order: 1KG
Purity: 99.9
Supply Ability: 1 ton
Release date: 2024-08-21

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