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Phosphonic acid, phenyl-, bis(4-aminophenyl) ester, also known as BPAPA, is a chemical compound that serves as a cross-linking agent or curing agent in various applications. It is characterized by its colorless to pale yellow liquid form with a faint odor, and its solubility in organic solvents but not in water. BPAPA is recognized for its high thermal stability and resistance to oxidation, which makes it a valuable component in the creation of durable materials. Furthermore, it is utilized as an intermediate in the synthesis of pharmaceuticals and agrochemicals.

2420-91-9

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2420-91-9 Usage

Uses

Used in Adhesives:
Phosphonic acid, phenyl-, bis(4-aminophenyl) ester is used as a cross-linking agent for enhancing the adhesive properties and durability of the final product.
Used in Coatings:
In the coatings industry, BPAPA is used as a curing agent to improve the hardness, chemical resistance, and overall performance of the coating.
Used in Composites:
Phosphonic acid, phenyl-, bis(4-aminophenyl) ester is used as a curing agent in composite materials to increase their mechanical strength and thermal stability.
Used in Pharmaceutical and Agrochemical Synthesis:
BPAPA is used as an intermediate in the synthesis of various pharmaceuticals and agrochemicals, contributing to the development of new and effective products in these fields.
Health and Safety Considerations:

Check Digit Verification of cas no

The CAS Registry Mumber 2420-91-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,4,2 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2420-91:
(6*2)+(5*4)+(4*2)+(3*0)+(2*9)+(1*1)=59
59 % 10 = 9
So 2420-91-9 is a valid CAS Registry Number.

2420-91-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 4-[(4-aminophenoxy)-phenylphosphoryl]oxyaniline

1.2 Other means of identification

Product number -
Other names Phosphonic acid,phenyl-,bis(4-aminophenyl) ester

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:2420-91-9 SDS

2420-91-9Downstream Products

2420-91-9Relevant academic research and scientific papers

Synthesis and characterization of novel phosphorus-containing polyurethane elastomers

Xu, Wenzong,Ren, Mingyuan,Liu, Liang

, p. 1331 - 1333 (2014)

Bis(4-aminophenoxy)phenyl phosphine oxide (BAPPO) was synthesized based on phenyl phosphonic dichloride and 4-nitrophenol and characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR). Then BAPPO was used to prepare a series of phosphorus-containing polyurethane elastomers (PPUEs) with different phosphorus contents by changing the soft segments. Combustion behaviours and thermal degradation behaviours of the PPUEs and polyurethane elastomer (PUE) were investigated by thermogravimetric analysis (TGA) and microscale combustion calorimetry (MCC). Thermogravimetric analysis result shows that the thermal degradation of polyurethane elastomers is divided into two stages and the thermal stability of PPUE-1 is poorer than that of PUE. The MCC result reveals that the values of the peak heat release rate and total heat release of PPUE-1 are lower than that of PUE made by 3,3'-dichloro-4,4'- diaminodiphenylmethane (MOCA) when they are obtained from the same soft segment.

New compound bis-(4-aminophenyl) phenyl phosphonate and synthesis method thereof

-

Paragraph 0029; 0031; 0032; 0033; 0034; 0040; 0041; 0044, (2019/01/07)

The invention discloses a compound bis-(4-aminophenyl) phenyl phosphonate and a synthesis method thereof. A molecular structure formula of the compound bis-(4-aminophenyl) phenyl phosphonate is showedas follows: . The synthesis method includes the followi

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