Important Announcement

X

ChemIDplus is moving to PubChem in December 2022.
Please see the NLM Technical Bulletin article for more information.

Skip Navigation
ChemIDplus LiteBrowseAdvanced

Substance Name: Triphenylphosphine oxide
RN: 791-28-6
UNII: Z69161FKI3
InChIKey: FIQMHBFVRAXMOP-UHFFFAOYSA-N

Note

  • Used in the extraction, separation & spectrophotometric determination of cadmium & mercury in environmental samples.

Molecular Formula

  • C18-H15-O-P

Molecular Weight

  • 278.289
 

Classification Code

  • Drug / Therapeutic Agent
* denotes mobile formatted website

Links to Resources

NLM Resources (File Locators)

Regulatory Agencies (Superlist Locators)

Other Resources (Internet Locators)


Search for this InChIKey on the Web

Names and Synonyms

Name of Substance

  • Triphenylphosphine oxide

Synonyms

  • EC 212-338-8
  • EINECS 212-338-8
  • NSC 398
  • Triphenyl phosphine oxide
  • Triphenyl phosphorus oxide
  • Triphenylphosphine oxide
  • UNII-Z69161FKI3

Systematic Names

  • Phosphine oxide, triphenyl-
  • Triphenylphosphine oxide

Registry Numbers

CAS Registry Number

  • 791-28-6

FDA UNII

  • Z69161FKI3

Other Registry Number

  • 47027-44-1

System Generated Number

  • 0000791286

Structure Descriptors

InChI

InChI=1S/C18H15OP/c19-20(16-10-4-1-5-11-16,17-12-6-2-7-13-17)18-14-8-3-9-15-18/h1-15H

InChIKey

FIQMHBFVRAXMOP-UHFFFAOYSA-N

Smiles

O=P(c1ccccc1)(c2ccccc2)c3ccccc3

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
chicken LD50 oral > 5gm/kg (5000mg/kg)   National Technical Information Service. Vol. OTS0570648,
dog LDLo oral 500mg/kg (500mg/kg) BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD

BEHAVIORAL: AGGRESSION

LUNGS, THORAX, OR RESPIRATION: DYSPNEA
National Technical Information Service. Vol. OTS0570648,
mouse LD50 oral 1380mg/kg (1380mg/kg)   Khimiko-Farmatsevticheskii Zhurnal. Chemical Pharmaceutical Journal. For English translation, see PCJOAU. Vol. 24(4), Pg. 22, 1990.

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 156.5 deg C   EXP
Boiling Point > 360 deg C   EXP
log P (octanol-water) 2.83 (none)   EXP
Water Solubility 62.8 mg/L 25 EST
Henry's Law Constant 5.26E-10 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 5.85E-12 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.