2-(4-Hydroxyphenylazo)benzoic acid
Synonym(s):2-(4′-Hydroxybenzeneazo)benzoic acid;4′-Hydroxyazobenzene-2-carboxylic acid;HABA;HBABA
- CAS NO.：1634-82-8
- Empirical Formula: C13H10N2O3
- Molecular Weight: 242.23
- MDL number: MFCD00002428
- EINECS: 216-655-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-11-19 23:02:33
What is 2-(4-Hydroxyphenylazo)benzoic acid?
Chemical properties
light yellow to orange powder
The Uses of 2-(4-Hydroxyphenylazo)benzoic acid
2-(4-Hydroxyphenylazo)benzoic acid may be used in the preparation of:
- 2-((4-(3,4-dicyanophenoxy)phenyl)diazenyl)benzoic acid
- 2,2′-((((4,5-dicyano-1,2-phenylene)bis(oxy))bis(4,1-phenylene))bis(diazene-2,1-diyl)) dibenzoic acid
- a multifunctional benzoxazine monomer
Definition
ChEBI: An azo compound that is azobenzene in which one phenyl group is substituted at position 4 by a hydroxy group, while the other phenyl group is substituted at position 2 by a carboxy group. It is used as a matrix in matrix-assisted laser desorption/ionizatio (MALDI) mass spectrometry.
General Description
2-(4-Hydroxyphenylazo)benzoic acid) (HABA), can be used for desorption of proteins, peptides and glycoproteins, thereby making it very advantageous for matrix-assisted laser desorption ionization mass spectrometry.
Properties of 2-(4-Hydroxyphenylazo)benzoic acid
| Melting point: | 204-208 °C(lit.) |
| Boiling point: | 385.05°C (rough estimate) |
| Density | 1.2480 (rough estimate) |
| refractive index | 1.5300 (estimate) |
| storage temp. | Store below +30°C. |
| solubility | ethanol: 20 mg/mL, clear |
| form | powder to crystal |
| pka | 3.40±0.36(Predicted) |
| color | Light yellow to Brown |
| BRN | 1842696 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| CAS DataBase Reference | 1634-82-8(CAS DataBase Reference) |
| EPA Substance Registry System | Benzoic acid, 2-[(4-hydroxyphenyl)azo]- (1634-82-8) |
Safety information for 2-(4-Hydroxyphenylazo)benzoic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up. |
Computed Descriptors for 2-(4-Hydroxyphenylazo)benzoic acid
2-(4-Hydroxyphenylazo)benzoic acid manufacturer
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ARRAKIS INDUSTRIES LLP
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product: HABA AR FOR MASS SPECTROSCOPY 99%
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![sodium 2-[(4-hydroxyphenyl)azo]benzoate](https://img.chemicalbook.in/CAS/GIF/32050-78-5.gif)
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