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4-(Diphenylphosphino)benzoic acid

CAS No.
2129-31-9
Chemical Name:
4-(Diphenylphosphino)benzoic acid
Synonyms
4-(Diphenylphosphino)benzoic acid;p-(Diphenylphosphino)benzoic acid;4-Diphenylphosphanyl-benzoesaeure;(4-Carboxyphenyl)diphenylphosphine;4-di(phenyl)phosphanylbenzoic acid;Diphenyl(p-carboxyphenyl) phosphine;Benzoic acid, 4-(diphenylphosphino)-;4-(Diphenylphosphino)benzoic acid 97%;4-(Diphenylphosphino)benzoic Acid >4-(phenylphosphino)benzenemacetic acid
CBNumber:
CB3237779
Molecular Formula:
C19H15O2P
Molecular Weight:
306.3
MDL Number:
MFCD00407264
MOL File:
2129-31-9.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-09-12 18:51:51

4-(Diphenylphosphino)benzoic acid Properties

Melting point 157-160 °C (lit.)
Boiling point 448.0±28.0 °C(Predicted)
storage temp. Inert atmosphere,Room Temperature
pka 4.01±0.10(Predicted)
form Crystalline Powder
color White to yellow
InChI 1S/C19H15O2P/c20-19(21)15-11-13-18(14-12-15)22(16-7-3-1-4-8-16)17-9-5-2-6-10-17/h1-14H,(H,20,21)
InChIKey GXMHDTPYKRTARV-UHFFFAOYSA-N
SMILES OC(=O)c1ccc(cc1)P(c2ccccc2)c3ccccc3
CAS DataBase Reference 2129-31-9
UNSPSC Code 12352002
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264-P271-P280-P302+P352-P305+P351+P338
target organs Respiratory system
PPE dust mask type N95 (US), Eyeshields, Gloves
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-37/39
WGK Germany  3
HS Code  29163990
Storage Class 11 - Combustible Solids
Hazard Classifications Eye Irrit. 2
Skin Irrit. 2
STOT SE 3

4-(Diphenylphosphino)benzoic acid price More Price(45)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 401595 4-(Diphenylphosphino)benzoic acid 97% 2129-31-9 1g $103 2026-04-30 Buy
Sigma-Aldrich 401595 4-(Diphenylphosphino)benzoic acid 97% 2129-31-9 5g $225 2026-04-30 Buy
TCI Chemical D3243 4-(Diphenylphosphino)benzoic Acid >97.0%(HPLC)(T) 2129-31-9 1g $157 2026-04-30 Buy
TCI Chemical D3243 4-(Diphenylphosphino)benzoic Acid >97.0%(HPLC)(T) 2129-31-9 5g $473 2026-04-30 Buy
Apolloscientific OR51829 4-(Diphenylphosphino)benzoic acid 98% 2129-31-9 1g $24 2026-06-04 Buy
Product number Packaging Price Buy
401595 1g $103 Buy
401595 5g $225 Buy
D3243 1g $157 Buy
D3243 5g $473 Buy
OR51829 1g $24 Buy

4-(Diphenylphosphino)benzoic acid Chemical Properties, Uses, Production

Uses

4-(Diphenylphosphino)benzoic acid can be used as a ligand in the synthesis of:

  • Organostannoxane-supported palladium nanoparticles. The resulting catalysts show high activity and selectivity in Suzuki-coupling reactions.
  • Polymetallic ruthenium-zinc complex catalyst for the hydrogenation of levulinic acid to γ-valerolactone.

reaction suitability

reaction type: Buchwald-Hartwig Cross Coupling Reaction
reaction type: Heck Reaction
reaction type: Hiyama Coupling
reaction type: Negishi Coupling
reaction type: Sonogashira Coupling
reaction type: Stille Coupling
reaction type: Suzuki-Miyaura Coupling
reagent type: ligand

4-(Diphenylphosphino)benzoic acid Preparation Products And Raw materials

Raw materials

Preparation Products

Global Suppliers ( 121)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. 4006356688 18621169109 market03@meryer.com China 40202 62
Beijing Donghualituo Techonlogy Development Co.,Ltd. 010-88425576 sales@dhltchem.com China 793 59
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Ark Pharm, Inc. 847-367-3680 sales@arkpharminc.com United States 1669 56
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Nanjing Chemlin Chemical Co., Ltd 025-83697070 13770331960 info@chemlin.com.cn China 16305 64
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Shandong Xiya Chemical Co., Ltd 13355009207 13355009207 3007715519@qq.com China 18722 57
Syntechem Co.,Ltd info@syntechem.com China 12973 57

View Latest Price from 4-(Diphenylphosphino)benzoic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
4-(Diphenylphosphino)benzoic Acid   pictures 2026-08-07 4-(Diphenylphosphino)benzoic Acid
2129-31-9
$1.00 1KG 99% 20 tons Shaanxi Dideu Medichem Co. Ltd
4-(DIPHENYLPHOSPHINO)BENZOIC ACID pictures 2020-01-03 4-(DIPHENYLPHOSPHINO)BENZOIC ACID
2129-31-9
$6.60 1KG 97%-99% 1kg -1000kg Career Henan Chemical Co
Diphenyl(p-carboxyphenyl) phosphine p-(Diphenylphosphino)benzoic acid (4-Carboxyphenyl)diphenylphosphine 4-(Diphenylphosphino)benzoic acid 97% 4-di(phenyl)phosphanylbenzoic acid 4-Diphenylphosphanyl-benzoesaeure 4-(Diphenylphosphino)benzoic Acid > Benzoic acid, 4-(diphenylphosphino)- 4-diphenylphosphonic acid benzoic acid 4-(phenylphosphino)benzenemacetic acid 4-(Diphenylphosphino)benzoic acid 2129-31-9 C6H52PC6H4CO2H Phosphine Ligands Catalysis and Inorganic Chemistry Phosphorus Compounds Phosphine Ligands Synthetic Organic Chemistry Catalysis and Inorganic Chemistry Phosphine Ligands Phosphorus Compounds