81-16-3
Product Name:
2-Aminonaphthalene-1-sulfonic acid
Formula:
C10H9NO3S
Synonyms:
2-Naphthylamine-1-sulfonic acid;Tobias acid
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CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Dry Powder |
|---|---|
| Color/Form | WHITE NEEDLES |
| Solubility | Slightly sol in cold water; more sol in hot water; very slightly sol in alcohol, ether |
| LogP | log Kow= -1.16 |
| Decomposition | When heated to decomp it emits very toxic fumes of /nitrogen oxides and sulfur oxides/. |
| Dissociation Constants | pK1= 2.35 in water @ 25 °C |
| Chemical Classes | Nitrogen Compounds -> Naphthylamines |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H319: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. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P337+P313:IF eye irritation persists: Get medical advice/attention. |
COMPUTED DESCRIPTORS
| Molecular Weight | 223.25 g/mol |
|---|---|
| XLogP3 | 1.8 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 1 |
| Exact Mass | 223.03031432 g/mol |
| Monoisotopic Mass | 223.03031432 g/mol |
| Topological Polar Surface Area | 88.8 Ų |
| Heavy Atom Count | 15 |
| Formal Charge | 0 |
| Complexity | 322 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |