Trioctylphosphine oxide99%
ISO 1 Inquiries
78-50-2
Industrial Grade
99%
Hangzhou Raisun
25kg drum or as your request
2026-12-31
Basic chemicals,Specialty chemicals,Raw materials&Intermediates,Fine chemicals,Pharmaceutical intermediates
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Product Description
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Seller Information
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Inquiry History
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DescriptionCertificatesBasic Info
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Product Name:
Trioctylphosphine oxide
Other Name:Phosphine oxide,trioctyl-;Trioctylphosphine oxide;TOPO;Tri-n-octylphosphine oxide;Hostarex PX 324;Cyanex 921;1-Dioctylphosphoryloctane;1-(Dioctylphosphoryl)octane;129406-23-1
CAS No.:78-50-2
Molecular Formula:C24H51OP
InChIKeys:InChIKey=ZMBHCYHQLYEYDV-UHFFFAOYSA-N
Molecular Weight:386.63
Exact Mass:386.63
BRN:1796648
EC Number:201-121-3
NSC Number:41937
DSSTox ID:DTXSID1052537
HScode:32019090
Categories:
Characteristics-
PSA:
17.1
XLogP3:9.40
Appearance:White to slightly yellow Crystalline Powder, Crystals or Flakes
Density:0.9±0.1 g/cm3
Melting Point:48-54 °C
Boiling Point:180-205 °C @ Press: 1 Torr
Flash Point:>230 °F
Refractive Index:1.448
Water Solubility:H2O: Insoluble
Storage Conditions:Store below +30°C.
Toxicity:LD50 orally in Rabbit: > 10000 mg/kg LD50 dermal Rat 2830 mg/kg
Hazard IdentificationClassification of the substance or mixture
Skin irritation, Category 2
Skin sensitization, Category 1
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Warning
Hazard statement(s) H315 Causes skin irritation
H317 May cause an allergic skin reaction
Precautionary statement(s) Prevention P264 Wash ... thoroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P272 Contaminated work clothing should not be allowed out of the workplace.
Response P302+P352 IF ON SKIN: Wash with plenty of water/...
P321 Specific treatment (see ... on this label).
P332+P317 If skin irritation occurs: Get medical help.
P362+P364 Take off contaminated clothing and wash it before reuse.
P333+P317 If skin irritation or rash occurs: Get medical help.
Storage none
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.
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Seller Information
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Business Type:
Trader
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Main Products:
Basic chemicals,Specialty chemicals,Raw materials&Intermediates,Fine chemicals,Pharmaceutical intermediates
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Location:
Room 4007, 4th Floor, No 4 Shanxian Road, Xiacheng District, Hangzhou Zhejiang, China, 310004
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Payment Terms:
TT against copy of documents,L/C,100% TT in advance
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Average lead Time:
7
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Total Annual Revenue:
$5 million-$10 million
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Total Employees:
11-50
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Year of Establishment:
2019
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Inquiry History1 Inquiries
Country Product Purchase Quantity Date Posted 
United States
Trioctylphosphine oxide
3 L Sep 28, 2025 Post an enquiry for this product