6-Amino-2-naphthalenesulfonic acid
- CAS NO.：93-00-5
- Empirical Formula: C10H9NO3S
- Molecular Weight: 223.25
- MDL number: MFCD00035736
- EINECS: 202-208-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:20:57
What is 6-Amino-2-naphthalenesulfonic acid?
Description
2-Aminonaphthalene-6-sulfonic acid [93- 00-5]. (6-aminonaphthalene-2-sulfonic acid), Bronner acid, C10H9NO3S, Mr 223.24, crystallizes from water as the monohydrate in plates although only 0.2 % soluble at 100℃. Sulfonation with 20 % oleum at 20℃ gives a mixture of 1,6- and 6,8-disulfonic acids.
The Uses of 6-Amino-2-naphthalenesulfonic acid
6-Amino-2-naphthalenesulfonic Acid is used in the synthesis of diaryl urea derivatives bearing sulfonamide moiety with an in vitro antitumor activity.
Definition
ChEBI: 6-aminonaphthalene-2-sulfonic acid is an aminonaphthalenesulfonic acid.
Production Methods
2-Hydroxynaphthalene-6-sulfonic acid is aminated by a Bucherer reaction under conditions similar to those used for Tobias acid.
Flammability and Explosibility
Not classified
Purification Methods
Crystallise the acid from a large volume of hot water. The diethylamine salt has m 190.5-192o (from EtOH/isoBuOH), and the S-benzylisothiuronium salt has m 330o (from nBuOH). [Beilstein 14 H 760, 14 II 463, 14 III 2249, 14 IV 2804.]
Properties of 6-Amino-2-naphthalenesulfonic acid
| Density | 1.3588 (rough estimate) |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.6500 (estimate) |
| storage temp. | Keep in dark place,Inert atmosphere,Room temperature |
| form | powder to crystal |
| pka | -0.08±0.40(Predicted) |
| color | White to Light yellow to Light orange |
| Water Solubility | 0.12g/L(20 ºC) |
| CAS DataBase Reference | 93-00-5(CAS DataBase Reference) |
| EPA Substance Registry System | 6-Amino-2-naphthalenesulfonic acid (93-00-5) |
Safety information for 6-Amino-2-naphthalenesulfonic acid
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H317:Sensitisation, Skin |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. |
Computed Descriptors for 6-Amino-2-naphthalenesulfonic acid
| InChIKey | SEMRCUIXRUXGJX-UHFFFAOYSA-N |
6-Amino-2-naphthalenesulfonic acid manufacturer
DL Intrachem
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