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. |
Computed Descriptors for 4-Aminobenzoic acid 4-aminophenyl ester
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