7-(Acetylamino)-4-hydroxy-2-naphthalenesulfonic acid
- CAS NO.：6334-97-0
- Empirical Formula: C12H11NO5S
- Molecular Weight: 281.28
- MDL number: MFCD00800454
- EINECS: 228-715-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-11-06 15:21:11
What is 7-(Acetylamino)-4-hydroxy-2-naphthalenesulfonic acid?
Chemical properties
7-Acetamido-4-hydroxynaphthalene-2-sulfonic acid [6334-97-0] N-acetyl J acid, is produced by reaction of the sodium salt of J acid with acetic anhydride in aqueous solution at 20 – 30℃, followed by heating at 95℃ with sodium carbonate to hydrolyze any O-acetyl derivative present (yield 85 %). It is used to produce C.I. Acid Orange 27, C.I. Acid Red 137, and C.I. Direct Red 77.
Flammability and Explosibility
Not classified
Properties of 7-(Acetylamino)-4-hydroxy-2-naphthalenesulfonic acid
| Boiling point: | 545.86℃[at 101 325 Pa] |
| Density | 1.581[at 20℃] |
| vapor pressure | 0Pa at 25℃ |
| Water Solubility | 17.5g/L |
| CAS DataBase Reference | 6334-97-0(CAS DataBase Reference) |
| EPA Substance Registry System | 2-Naphthalenesulfonic acid, 7-(acetylamino)-4-hydroxy- (6334-97-0) |
Safety information for 7-(Acetylamino)-4-hydroxy-2-naphthalenesulfonic 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. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 7-(Acetylamino)-4-hydroxy-2-naphthalenesulfonic acid
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