6-Amino-1-naphthalenesulfonic acid
- CAS NO.:81-05-0
- Empirical Formula: C10H9NO3S
- Molecular Weight: 223.25
- MDL number: MFCD00035724
- EINECS: 201-318-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-05-31 17:33:32
What is 6-Amino-1-naphthalenesulfonic acid?
Chemical properties
2-Aminonaphthalene-5-sulfonic acid [81-05-0]. (6-aminonaphthalene-1-sulfonic acid), Dahl’s acid, Dressel acid, D acid, C10H9NO3S, Mr 223.24, crystallizes from water as needles although only 0.4 % soluble at 100℃. The sodium, calcium, and barium salts are moderately soluble in water. Bromination in acetic acid gives the 1-bromo derivative. Sulfonation with oleum gives a mixture of 2-aminonaphthalene-5,7-disulfonic acid together with some 1,5-disulfonic acid. Fusion with potassium hydroxide at 260℃ yields 6-amino-1-naphthol.
What are the applications of Application
6-Amino-1-naphthalenesulfonic acid is a product for proteomics research
Production Methods
Tobias acid is added to a mixture of sulfuric acid and oleum, and the reaction is completed by stirring for 12 h at 25℃. The resulting sulfonation mass, containing mainly 2-aminonaphthalene-1,5-disulfonic acid, is poured into water and heated at 105℃ for 3 h to desulfonate and precipitate the product which, after cooling, is filtered off; the yield is 95 %.
Properties of 6-Amino-1-naphthalenesulfonic acid
Density | 1.3588 (rough estimate) |
refractive index | 1.6500 (estimate) |
storage temp. | under inert gas (nitrogen or Argon) at 2–8 °C |
pka | -0.33±0.40(Predicted) |
form | powder to crystal |
color | White to Light yellow to Light red |
Water Solubility | 0.33g/L(20 ºC) |
Merck | 14,6407 |
CAS DataBase Reference | 81-05-0(CAS DataBase Reference) |
Safety information for 6-Amino-1-naphthalenesulfonic acid
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H315:Skin corrosion/irritation H319: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. |
Computed Descriptors for 6-Amino-1-naphthalenesulfonic acid
Abamectin manufacturer
R K Synthesis Limited
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