- Diaminobenzoic acid
-
- $0.00 / 1kg
-
2025-11-02
- CAS:603-81-6
- Min. Order: 1kg
- Purity: 98%
- Supply Ability: Customise
- 2,3-Diaminobenzoic acid
-
- $380.00 / 1kg
-
2025-10-31
- CAS:603-81-6
- Min. Order: 1kg
- Purity: 98.5
- Supply Ability: 5tons/month
|
| | 2,3-Diaminobenzoic acid Basic information |
| Product Name: | 2,3-Diaminobenzoic acid | | Synonyms: | 2,3-DIAMINOBENZOIC ACID;2,3-Diaminobenzonicacid;3-carboxy-1,2-diaminobenzene;2,3-bis(azanyl)benzoic acid;2,3-diaMinobenzoic acid hydrochloride;Benzoic acid, 2,3-diamino-;3-Diaminobenzoic acid | | CAS: | 603-81-6 | | MF: | C7H8N2O2 | | MW: | 152.15 | | EINECS: | | | Product Categories: | Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts;pharmacetical;Carboxylic Acids;Phenyls & Phenyl-Het;Benzoic acid;API intermediates;Carboxylic Acids;Phenyls & Phenyl-Het | | Mol File: | 603-81-6.mol |  |
| | 2,3-Diaminobenzoic acid Chemical Properties |
| Melting point | 198-204 °C | | Boiling point | 274.61°C (rough estimate) | | density | 1.2804 (rough estimate) | | refractive index | 1.5200 (estimate) | | storage temp. | Keep in dark place,Inert atmosphere,Room temperature | | form | solid | | pka | 5.10±0.10(Predicted) | | color | Brown to dark brown | | CAS DataBase Reference | 603-81-6(CAS DataBase Reference) |
| Hazard Codes | Xi,Xn | | Risk Statements | 22-36 | | Safety Statements | 26 | | HazardClass | IRRITANT | | HS Code | 29224999 |
| | 2,3-Diaminobenzoic acid Usage And Synthesis |
| Uses | 2,3-Diaminobenzoic acid (23DBA) is an important organic reagent mainly used in scientific research and laboratory experiments. 23DBA can undergo polycondensation with terephthalic acid dichloro anhydride[1]. 23DBA isomer is also used in the study of luminescence mechanism of red luminescent carbon dots (RCDs)[2]. In addition, 2,3-Diaminobenzoic acid also possesses antioxidant properties that help reduce the formation of free radicals in the body. It is also used as a chelating agent that effectively binds to metal ions and prevents them from forming insoluble complexes. | | Synthesis | 2,3-Diaminobenzoic acid is synthesised using 3-nitroanthranilic acid as a raw material by chemical reaction. The specific synthesis steps are as follows:
2-amino-3-nitrobenzoic acid (9.36 g, 51.4 mmol) was dissolved in MeOH (100 mL) and there was added 10% Pd/C (2.0g). The reaction was stirred under H2-atmosphere (ambient pressure) until absorption ceased. The reaction was filtered through a pad of Celite and the filtrate was evaporated under reduced pressure. The product was purified by flash chromatography (CH2Cl2/MeOH 5:1) and the collected fractions were evaporated to give 2,3-Diaminobenzoic acid (5.40 g, 69%) as a dark brown solid. mp. 199 °C dec. (Litt4. 201 °C dec.). 1H NMR (300 MHz, DMSO-d6) δ 7.09 (dd, J = 8.0, 1.5 Hz, 1H), 6.67 (dd, J = 7.4, 1.5 Hz, 1H), 6.34 (dd, J = 8.0, 7.4 Hz, 2H), 6.32 (br s, 4H). 13C NMR (75 MHz, DMSO-d6) δ 170.5, 139.6, 135.6, 119.4, 117.0, 114.9, 110.3.
 | | References | [1] V. N. ODNORALOVA. The polycondensation reaction of 2,4-diaminobenzoic acid with dichloroanhydride of terephthalic acid[J]. Fibre Chemistry, 1974. DOI:10.1007/BF00542946.
[2] LIU Y, DING H, ZHANG S, et al. Photoluminescence mechanism of red emissive carbon dots from a diaminobenzoic acid isomer?[J]. Materials Advances, 2023. DOI:10.1039/D3MA00836C.
|
| | 2,3-Diaminobenzoic acid Preparation Products And Raw materials |
|