Diphenylphosphinic acid Chemical Properties

Melting point:

193-195 °C(lit.)

Boiling point:

194 °C

Density 

1.25±0.1 g/cm3(Predicted)

storage temp. 

Sealed in dry,Room Temperature

solubility 

0.1 M NaOH: soluble0.5g/10 mL, clear, colorless

pka

2.30±0.10(Predicted)

form 

Fine Crystalline Solid

color 

White

Water Solubility 

Soluble in water.

BRN 

2804567

CAS DataBase Reference

1707-03-5(CAS DataBase Reference)

NIST Chemistry Reference

Diphenyl phosphinic acid(1707-03-5)

Safety Information

Risk Statements 

36/37/38

Safety Statements 

22-24/25

WGK Germany 

3

RTECS 

SZ5315000

HS Code 

29310095

MSDS

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Diphenylphosphinic acid Usage And Synthesis

Chemical Properties

white fine crystalline solid

Uses

Diphenylphosphinic acid is used as a reagent employed in the synthesis of bidentate ligands and peptide coupling agents.

Definition

ChEBI: Diphenylphosphinic acid is a member of phosphinic acids.

Synthesis Reference(s)

The Journal of Organic Chemistry, 22, p. 1671, 1957 DOI: 10.1021/jo01363a037

General Description

Diphenylphosphinic acid (DPPA, hdpp) is an organophosphinic acid compound. It finds application as a reactive flame-retardant and promoter for palladium catalytic systems. Thermal degradation of DPPA has been studied by thermogravimetric analysis (TGA) method. DPPA reacts with cadmium nitrate in dimethylformamide solvent to afford the one-dimensional coordination polymer catena-poly[[bis(dimethylformamide-κO)cadmium(II)]-bis(μ-diphenylphosphinato-κ(2)O:O′)]. It has been repoted to promote the carbonylation of nitrobenzene and aniline to diphenylurea. Ortho-lithiated DPPA can form mono ortho-functionalized derivatives by electrophilic trapping and biphenyl-2,2′-diylbis(phenylphosphinic acid) by copper catalyzed coupling.

Purification Methods

Recrystallise it from 95% EtOH and dry it under vacuum at room temperature. [see Kosolapoff Organophosphorus Compounds J Wiley, NY, 1950, Kosolapoff and Maier Organic Phosphorus Compounds Wiley-Interscience, NY, 1972-1976, Beilstein 16 IV 1036.]

Diphenylphosphinic acid(1707-03-5)Related Product Information

• Ethyl 2-(Chlorosulfonyl)acetate
• Diphenylphosphine
• Chlorodiphenylphosphine
• Phenylphosphonic acid
• Diphenylphosphine oxide
• Stearic acid
• 1,3-Diphenyl-2-thiourea
• 1,5-Diphenylcarbazide
• Folic acid
• Citric acid
• 3,4'-DIAMINODIPHENYLMETHANE
• Diphenylsilane
• tert-Butylchlorodiphenylsilane
• Diphenylmethane
• Diphenyl-2-pyridylphosphine
• Cyclohexyldiphenylphosphine
• Ascoric Acid
• 1,3-Bis(diphenylphosphino)propane