2-Aminotoluene-5-sulfonic acid
- CAS NO.：98-33-9
- Empirical Formula: C7H9NO3S
- Molecular Weight: 187.22
- MDL number: MFCD00025198
- EINECS: 202-658-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-07-16 09:55:25
What is 2-Aminotoluene-5-sulfonic acid?
Description
2-Aminotoluene-5-sulfonic acid is prepared from o-toluidine and 98 % H2SO4 via the sulfate, which is then baked. The sodium salt can be isolated after liming and precipitation of calcium sulfate. The solution can be used directly in the manufacture of dyes.
Physical properties
White to Pale-yellow to Yellow-brown Sticky Oil to Semi-Solid.
Flammability and Explosibility
Not classified
Properties of 2-Aminotoluene-5-sulfonic acid
| Melting point: | 290°C |
| Density | 1.3553 (rough estimate) |
| refractive index | 1.6100 (estimate) |
| pka | pK1: 3.125 (25°C) |
| color | Faint beige to faint red/orange |
| Water Solubility | 5g/L(20 ºC) |
| CAS DataBase Reference | 98-33-9(CAS DataBase Reference) |
| EPA Substance Registry System | Benzenesulfonic acid, 4-amino-3-methyl- (98-33-9) |
Safety information for 2-Aminotoluene-5-sulfonic 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-Aminotoluene-5-sulfonic acid
2-Aminotoluene-5-sulfonic acid manufacturer
Aarti Organic
Gujarat
Phone:91-9825010525
Whatsapp: 91-9825010525
product: o-Toluidine-4-sulfonic acid
Cns Chemicals
Hyderabad
Phone:91-9381957258
Whatsapp: 91-9381957258
product: o-Toluidine-4-sulfonic acid
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