4-Aminobenzoic acid 4-aminophenyl ester

CAS NO.：20610-77-9
Empirical Formula: C13H12N2O2
Molecular Weight: 228.25
MDL number: MFCD16038468
EINECS: 810-934-8
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 04:11:28

What is 4-Aminobenzoic acid 4-aminophenyl ester?

Chemical properties

off-white to white powder

The Uses of 4-Aminobenzoic acid 4-aminophenyl ester

4-Aminobenzoic acid 4-aminophenyl ester (APAB) acts as a polymer monomer to synthesise a series of polyesterimide (PEsI) copolymers with 4,4′-BPDA and TFMB. The average interchain distances of these polymers ranged from 4.6 to 5.7 ?, which increased with the increase of TFMB content.The glass transition temperatures (Tg) of PEsI-0.3 and PEsI-0.4 were 445°C and 455°C, respectively, whereas there was no significant change in the glass transition temperatures (Tg) of PEsI copolymers when APAB content was greater than 50 mol%. These PEsI copolymers have coefficients of thermal expansion (CTE): 3.8 ~ 24.2 ppm K-1, modulus: 5.7-7.8 GPa, tensile strength: 282-332 MPa, elongation at break: 10.2%-23.3%, and dielectric constants: 2.53-2.76. These PEsI copolymers can be used as novel base film materials for flexible printed circuit boards (FPCs).

Properties of 4-Aminobenzoic acid 4-aminophenyl ester

Melting point:	179.0 to 183.0 °C
Boiling point:	465.6±30.0 °C(Predicted)
Density	1.286
storage temp.	Keep in dark place,Sealed in dry,Room Temperature
form	powder to crystal
pka	4.01±0.10(Predicted)
color	Light yellow to Brown

Safety information for 4-Aminobenzoic acid 4-aminophenyl ester

Signal word	Danger
Pictogram(s)	Skull and Crossbones Acute Toxicity GHS06 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H319:Serious eye damage/eye irritation H334:Sensitisation, respiratory H351:Carcinogenicity H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P201:Obtain special instructions before use. P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.