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4-Nitrosophenol

4-Nitrosophenol structure

CAS No.: 104-91-6

Chemical Name:: 4-Nitrosophenol

Synonyms: Nsc3124;Aids159812;Aids-159812;Quinomeoxime;quinoneoxime;Nitrosophenol;4-Nitrosofenol;4-NITROSOPHENOL;quinonemonoxime;p-nitroso-pheno

CBNumber:: CB9182464

Molecular Formula:: C6H5NO2

Molecular Weight:: 123.11

MDL Number:: MFCD00002329

MOL File:: 104-91-6.mol

MSDS File:: SDS

Last updated:2026-05-28 05:20:10

Product description	Number	Pack Size	Price
4-Nitrosophenol (wetted with ca. 40% Water) (unit weight on dry weight basis) >98.0%(T)	N0374	25g	$107
4-Nitrosophenol Asreported	284939	100g	$955
4-Nitrosophenol Asreported	284939	250g	$1735
4-Nitrosophenol Asreported	284939	500g	$2513
4-Nitrosophenol Asreported	284939	1kg	$3433
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4-Nitrosophenol Properties

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.
LogP	1.1 at 20℃
CAS DataBase Reference	104-91-6(CAS DataBase Reference)
EWG's Food Scores	2
FDA UNII	55EB58H2UP
NIST Chemistry Reference	Phenol, 4-nitroso-(104-91-6)
EPA Substance Registry System	p-Nitrosophenol (104-91-6)

SAFETY

Risk and Safety Statements

Symbol(GHS)	GHS02,GHS05,GHS07,GHS08,GHS09
Signal word	Danger
Hazard statements	H228-H302-H315-H318-H341-H411
Precautionary statements	P241-P301+P312-P280
Hazard Codes	Xn,N
Risk Statements	21/22-40-41-68-51/53-22
Safety Statements	15-24/25-26-61-49-47-36/37/39
RIDADR	3236
RTECS	SM4725000
TSCA	TSCA listed
HazardClass	4.1
PackingGroup	II
HS Code	2908990000
Hazardous Substances Data	104-91-6(Hazardous Substances Data)
Toxicity	mmo-sat 50 mg/plate FCTXAV 18,523,80
REACH Registrations	Active

4-Nitrosophenol price More Price(13)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
TCI Chemical	N0374	4-Nitrosophenol (wetted with ca. 40% Water) (unit weight on dry weight basis) >98.0%(T)	104-91-6	25g	$107	2026-04-30	Buy
Usbiological	284939	4-Nitrosophenol Asreported	104-91-6	100g	$955	2026-06-03	Buy
Usbiological	284939	4-Nitrosophenol Asreported	104-91-6	250g	$1735	2026-06-03	Buy
Usbiological	284939	4-Nitrosophenol Asreported	104-91-6	500g	$2513	2026-06-03	Buy
Usbiological	284939	4-Nitrosophenol Asreported	104-91-6	1kg	$3433	2026-06-03	Buy

Product number	Packaging	Price	Buy
N0374	25g	$107	Buy
284939	100g	$955	Buy
284939	250g	$1735	Buy
284939	500g	$2513	Buy
284939	1kg	$3433	Buy

4-Nitrosophenol Chemical Properties,Uses,Production

Chemical Properties

black solid

Uses

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.]

4-Nitrosophenol Preparation Products And Raw materials

Raw materials

Preparation Products

Sulphur Red 6 1,4-Benzoquinone dioxime Vat Blue 43 Sulphur Blue 7 Vat Blue 42

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.

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4-Nitrosophenol Suppliers

Global( 17)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
CD Chemical Group Limited	+86-13651442114	info@codchem.com	China	17253	58
Moxin Chemicals	+86-17320513646 +86-17320513646	anna@molcoo.com	China	9998	58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD.	+8618950047208	ellena@amitychem.com	China	43392	58
Shanghai Macklin Biochemical Co.,Ltd.	15221275939 15221275939	shenlinxing@macklin.cn	China	15775	55
Rhawn Reagent	400-400-1332688 18019345275	huyue@rhawn.cn	China	14942	58
Beijing Minruida Technology Co., Ltd.	010-82387566	sales@mreda.com.cn	China	19323	58
Shenzhen Polymeri Biochemical Technology Co., Ltd.	+86-400-002-6226	sales@rrkchem.com	China	57336	58
HUNAN CHEMFISH SCIENTIFIC CO.,LTD	85521272 17788968862	sales@chemfish.com	China	7770	58
Shanghai Aladdin Biochemical Technology Co.,Ltd.	6206333 13167063860	anhua.mao@aladdin-e.com	China	49976	58
Shanghai Baoyang Baoxin Biotechnology Co., LTD	021-56698539 19921169802	bxsw_sh@163.com	China	3913	58

Supplier	Advantage
CD Chemical Group Limited	58
Moxin Chemicals	58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD.	58
Shanghai Macklin Biochemical Co.,Ltd.	55
Rhawn Reagent	58
Beijing Minruida Technology Co., Ltd.	58
Shenzhen Polymeri Biochemical Technology Co., Ltd.	58
HUNAN CHEMFISH SCIENTIFIC CO.,LTD	58
Shanghai Aladdin Biochemical Technology Co.,Ltd.	58
Shanghai Baoyang Baoxin Biotechnology Co., LTD	58

4-Nitrosophenol Spectrum

4-Nitrosophenol(104-91-6)MS 4-Nitrosophenol(104-91-6)¹HNMR 4-Nitrosophenol(104-91-6)¹³CNMR 4-Nitrosophenol(104-91-6)IR1 4-Nitrosophenol(104-91-6)IR2

104-91-6(4-Nitrosophenol )Related Search:

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P-NITROSOPHENOL P-QUINONE MONOXIME p-nitroso-pheno Quinomeoxime Quinone monoxime Quinone(mon)oxime quinonemonoxime quinoneoxime 4-NITROSOPHENOL 1,4-BENZOQUINONE MONOXIME PARA-NITROSOPHENOLS PARA-QUINONEMONOOXIME 4-NITROSOPHENOLS 4-NITROSOPHENOL: (WETTED WITH 40% WATER) 4-NITROOSOPHENOL 4-Nitrosophenol (wetted with ca. 40% Water, containing 25g on a dry weight basis) Nitrosophenol, p- Aids159812 Aids-159812 Nsc3124 p-Nitrosophenol - min 30wt% water 1,4-Benzoquinone Monoxime p-Quinone Monoxime 4-Nitrosophenol Sorafenib Impurity 46 4-Nitrosophenol (wetted with ca. 40% Water) (unit weight on dry weight basis) 4-Nitrosophenol (wetted with ca. 40% Water) (unit weight on dry weight basis) 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-BENZOQUINONE MONOXIME 4-Nitrosophenol(wettedwithca.40%Water,containing25gonadryweightbasis)> To nitrosophenol 4-Nitrosophenol (wetted with ca. 40% Water) 4-Nitrosophenol (wetted with ca. 50 % water) 104-91-6 C6H4NOOH HOC6H4NO NOC6H4OH ONC6H4OH C6H5NO2 alcohol| nitro-compound