4-Aminotoluene-3-sulfonic acid
Synonym(s):2-Amino-5-methylbenzenesulfonic acid;4-Methylaniline-2-sulfonic acid
- CAS NO.：88-44-8
- Empirical Formula: C7H9NO3S
- Molecular Weight: 187.22
- MDL number: MFCD00007908
- EINECS: 201-831-3
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-11-08 20:21:46
What is 4-Aminotoluene-3-sulfonic acid?
Description
4-Aminotoluene-3-sulfonic acid is produced by baking p-toluidine sulfate at 180 ℃ and 97 – 101 mbar, dissolving the product in 3 % sodium hydroxide solution, and precipitating the free acid by adding concentrated hydrochloric acid.
Chemical properties
BEIGE CRYSTALLINE POWDER
The Uses of 4-Aminotoluene-3-sulfonic acid
4-Aminotoluene-3-sulfonic acid was used to investigate the enrichment of aminobenzoic acids and aminotoluenesulfonic acids using graphitized carbon black (GCB) by solid-phase extraction. It was also used in the synthesis of azobenzene derivatives.
General Description
4-Aminotoluene-3-sulfonic acid acts as Schiff base ligand and forms binary and ternary complexes with Co(II), Ni(II), Cu(II) and Zn(II) ions.
Flammability and Explosibility
Non flammable
Properties of 4-Aminotoluene-3-sulfonic acid
| Melting point: | 300 °C |
| Boiling point: | 500°C (rough estimate) |
| Density | 1.431 |
| refractive index | 1.6100 (estimate) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| solubility | water: soluble6g/L at 20°C |
| form | powder to crystal |
| pka | -1.35±0.42(Predicted) |
| color | White to Light red to Green |
| Water Solubility | 32g/L(19 ºC) |
| BRN | 2211509 |
| CAS DataBase Reference | 88-44-8(CAS DataBase Reference) |
| EPA Substance Registry System | 4-Aminotoluene-3-sulfonic acid (88-44-8) |
Safety information for 4-Aminotoluene-3-sulfonic acid
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05 |
| GHS Hazard Statements |
H314:Skin corrosion/irritation H318:Serious eye damage/eye irritation H320:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P280:Wear protective gloves/protective clothing/eye protection/face protection. P310:Immediately call a POISON CENTER or doctor/physician. P301+P330+P331:IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. 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 4-Aminotoluene-3-sulfonic acid
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