4-Nitrosophenol
- CAS NO.：104-91-6
- Empirical Formula: C6H5NO2
- Molecular Weight: 123.11
- MDL number: MFCD00002329
- EINECS: 203-251-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-04-23 13:52:06
What is 4-Nitrosophenol ?
Chemical properties
black solid
The Uses of 4-Nitrosophenol
Dyes.
Hazard
Dangerous fire and explosion risk, reacts violently with acids and alkalies, may explode spontaneously, intraplant transport must be in tightly covered steel barrels.
Safety Profile
Poison by parented and intraperitoneal routes. Mutation data reported. An irritant and sensitizer. Many nitroso compounds are carcinogens. A very dangerous fire and explosion hazard. When exposed to heat or flame, it burns explosively. Contamination by acid or alkali may cause ignition . Can heat spontaneously and cause fire. When heated to decomposition it emits toxic fumes of NOx. See also NITROSO COMPOUNDS.
Purification Methods
4-Nitrosophenol forms yellow crystals from xylene, *C6H6 (m ~144o) or Et2O (m 128-129o, dec). [Beilstein 7 H 622, 7 II 574, 7 III 3367.]
Properties of 4-Nitrosophenol
| Melting point: | 132-144°C |
| Boiling point: | 229.19°C (rough estimate) |
| Density | 1.3147 (rough estimate) |
| vapor pressure | 0.003Pa at 20℃ |
| refractive index | 1.5423 (estimate) |
| solubility | soluble in Methanol |
| form | powder to crystal |
| pka | pK1:6.48 (25°C) |
| color | Pale-yellow, orthorhombic needles |
| Water Solubility | <0.1 g/100 mL at 21 ºC |
| Merck | 14,6642 |
| Stability: | Stability Flammable. Incompatible with strong oxidizing agents. Explodes when heated, or in contact with acids or alkalies. |
| CAS DataBase Reference | 104-91-6(CAS DataBase Reference) |
| NIST Chemistry Reference | Phenol, 4-nitroso-(104-91-6) |
| EPA Substance Registry System | p-Nitrosophenol (104-91-6) |
Safety information for 4-Nitrosophenol
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02  Corrosion Corrosives GHS05  Exclamation Mark Irritant GHS07  Health Hazard GHS08  Environment GHS09 |
| GHS Hazard Statements |
H228:Flammable solids H302:Acute toxicity,oral H315:Skin corrosion/irritation H318:Serious eye damage/eye irritation H341:Germ cell mutagenicity H411:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P241:Use explosion-proof electrical/ventilating/lighting/…/equipment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. |
Computed Descriptors for 4-Nitrosophenol
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