| Identification | More | [Name]
4-Nitrosophenol | [CAS]
104-91-6 | [Synonyms]
1,4-BENZOQUINONE MONOXIME
4-NITROSOPHENOL
P-BENZOQUINONE MONOXIME
P-NITROSOPHENOL
P-QUINONE MONOXIME
1,4-Benzopuinonemonoxime
2,5-Cyclohexadiene-1,4-dionemonoxime
4-Nitrosofenol
4-nitroso-pheno
enzoquinone monooxime
nitroso-4phenol
Nitrosophenol
para-nitrosophenol
p-Chinonmonoxim
Phenol, p-nitroso-
Phenol,4-nitroso-
p-nitroso-pheno
Quinomeoxime
Quinone monoxime
Quinone(mon)oxime | [EINECS(EC#)]
203-251-6 | [Molecular Formula]
C6H5NO2 | [MDL Number]
MFCD00002329 | [Molecular Weight]
123.11 | [MOL File]
104-91-6.mol |
| Chemical Properties | Back Directory | [Appearance]
black solid | [Melting point ]
132-144°C | [Boiling point ]
229.19°C (rough estimate) | [density ]
1.3147 (rough estimate) | [refractive index ]
1.5423 (estimate) | [pka]
pK1:6.48 (25°C) | [color ]
Pale-yellow, orthorhombic needles | [Stability:]
Stability Flammable. Incompatible with strong oxidizing agents. Explodes when heated, or in contact with acids or alkalies. | [Water Solubility ]
<0.1 g/100 mL at 21 ºC | [Merck ]
6642 | [Uses]
Dyes. | [CAS DataBase Reference]
104-91-6(CAS DataBase Reference) | [NIST Chemistry Reference]
Phenol, 4-nitroso-(104-91-6) | [EPA Substance Registry System]
104-91-6(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xn,N | [Risk Statements ]
R21/22:Harmful in contact with skin and if swallowed .
R40:Limited evidence of a carcinogenic effect.
R41:Risk of serious damage to eyes.
R68:Possible risk of irreversible effects.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R22:Harmful if swallowed. | [Safety Statements ]
S15:Keep away from heat .
S24/25:Avoid contact with skin and eyes .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S49:Keep only in the original container .
S47:Keep at temperature not exceeding ... E C (to be specified by the manufacturer) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [RIDADR ]
3236 | [RTECS ]
SM4725000 | [HazardClass ]
4.1 | [PackingGroup ]
II | [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. | [Hazardous Substances Data]
104-91-6(Hazardous Substances Data) | [Toxicity]
mmo-sat 50 mg/plate FCTXAV 18,523,80 |
| Raw materials And Preparation Products | Back Directory | [Preparation Products]
Sulphur Blue 7-->Sulphur Red 6-->Vat Blue 42-->Vat Blue 43-->1,4-Benzoquinone dioxime-->C.I.Leuco Sulphur Red 6-->Sulphur Red 6-->Sulphur Blue 7 -Leuco-->N-(2,4-diamino-5-(4-oxocyclohexa-2,5-dienylideneamino)phenyl)acetamide-->C.I. Sulphur Violet 5 (8CI)-->C.I. Sulphur Violet 4 (8CI)-->C.I. Sulphur Violet 3 (8CI)-->2,5-Cyclohexadien-1-one, 4-[[4-(phenylamino)phenyl]imino]-, reaction products with sodium sulfide (Na2(Sx))-->Acetamide, N-[2,4-diamino-5-[(4-oxo-2,5-cyclohexadien-1-ylidene)amino]phenyl]-, reaction products with sodium sulfide (Na2(Sx)), oxidized-->Sulfurized phenols-->C.I. Sulphur Blue 6 (8CI,9CI)-->Benzenesulfonic acid, 4-[[4-[(4-hydroxyphenyl)amino]phenyl]amino]-, reaction products with sodium sulfide (Na2(Sx)), leuco derivs.-->Leuco Sulphur Violet 3-->Leuco Sulphur Blue 2-->2,5-Cyclohexadien-1-one, 4-[[4-(phenylamino)phenyl]imino]-, reaction products with sodium sulfide (Na2(Sx)), leuco derivs. |
| Hazard Information | Back Directory | [Hazard]
Dangerous fire and explosion risk, reacts
violently with acids and alkalies, may explode spontaneously, intraplant transport must be in tightly
covered steel barrels. | [Chemical Properties]
black solid | [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.] |
|