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Cas Database

Name	1,4-Dinitrosobenzene	EINECS	203-272-0
CAS No.	105-12-4	Density	1.3 g/cm³
PSA	58.86000	LogP	2.48240
Solubility	N/A	Melting Point	146.5oC
Formula	C6H4 N2 O2	Boiling Point	259.7 °C at 760 mmHg
Molecular Weight	136.11	Flash Point	103.5 °C
Transport Information	N/A	Appearance	N/A
Safety	Poison by inhalation route. Moderately toxic by ingestion. When heated to decomposition it emits toxic vapors of NO_x.	Risk Codes	R20/22
Molecular Structure		Hazard Symbols	Xn
Synonyms	Benzene,p-dinitroso- (6CI,7CI,8CI); 1,4-Dinitrosobenzene; Actor DB; NSC 4771; RD3435-49; p-Dinitrosobenzene	Article Data	16

1,4-Dinitrosobenzene Synthetic route

: 105-11-3, 6133-83-1, 6421-98-3
p-benzoquinone dioxime

: 105-12-4
p-dinitrosobenzene

Conditions

Conditions	Yield
With hydrogenchloride; dihydrogen peroxide at 50℃; for 4h;	97%
With oxygen; Nitrogen dioxide In dichloromethane for 10h; Ambient temperature;	90%
With alkaline solution; potassium hexacyanoferrate(III)

: 24924-26-3
N,N'-dinitroso-1,4-phenylenedihydroxylamine

: 105-12-4
p-dinitrosobenzene

Conditions

Conditions	Yield
(heating);

: 52211-69-5
O,O'-bis(1,3,5-tri-tert-butyl-4-oxo-2,5-cyclohexadienyl)-p-benzoquinone dioxime

: 57435-52-6
[1,4]Benzoquinone bis-[O-(1-tert-butoxy-3,5-di-tert-butyl-4-oxo-cyclohexa-2,5-dienyl)-oxime]

A: 105-12-4
p-dinitrosobenzene

B: 3315-32-0, 2525-39-5
2,4,6-tri-tert-butylphenoxyl

C: 2606-99-7
2,6-di-tert-butyl-4-tert-butoxyphenoxyl

Conditions

Conditions	Yield
In benzene Heating;

: 52211-69-5
O,O'-bis(1,3,5-tri-tert-butyl-4-oxo-2,5-cyclohexadienyl)-p-benzoquinone dioxime

A: 105-12-4
p-dinitrosobenzene

B: 3315-32-0, 2525-39-5
2,4,6-tri-tert-butylphenoxyl

Conditions

Conditions	Yield
In benzene Heating;
In benzene Equilibrium constant; Mechanism; Thermodynamic data; Heating;

1.4-bis--benzene: 1.4-bis--benzene

: 105-12-4
p-dinitrosobenzene

Conditions

Conditions	Yield
With sulfuric acid

: 105-11-3, 6133-83-1, 6421-98-3
p-benzoquinone dioxime

alkaline aqueous NaOCl solution: alkaline aqueous NaOCl solution

: 105-12-4
p-dinitrosobenzene

: 7664-93-9
sulfuric acid

: 1,4-diisonitramino-benzene

: 105-12-4
p-dinitrosobenzene

: 105-11-3, 6133-83-1, 6421-98-3
1,4-Benzochinondioxim

: 105-12-4
p-dinitrosobenzene

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: (i) NO, NaOMe, MeOH, (ii) HCl 2: (heating) View Scheme

: 106-50-3
1,4-phenylenediamine

: 105-12-4
p-dinitrosobenzene

Conditions

Conditions	Yield
With dihydrogen peroxide; CpMo(CO)3(CCPh) In tert-butyl alcohol at 20℃; for 12h;

: 625-45-6
2-methoxyacetic acid

: 106-51-4
p-benzoquinone

A: 105-12-4
p-dinitrosobenzene

B: 2-(methoxymethyl)-1,4-dinitrosobenzene

Conditions

Conditions	Yield
Stage #1: 2-methoxyacetic acid; p-benzoquinone With ammonium persulfate; silver nitrate In water at 65℃; for 0.25h; Stage #2: With sodium acetate In ethanol for 12h; Reflux; Stage #3: With hydrogenchloride; dihydrogen peroxide In water at 55℃; for 0.5h;	A n/a B 0.68g

1,4-Dinitrosobenzene Toxicity Data With Reference

1.	orl-rat LD50:1020 mg/kg	KCRZAE Kauchuk i Rezina.(11),(1985),38.
2.	ihl-rat LCLo:200 mg/m3/2H	KCRZAE Kauchuk i Rezina.(11),(1985),38.
3.	orl-mus LD50:1230 mg/kg	KCRZAE Kauchuk i Rezina.(11),(1985),38.
4.	ihl-mus LCLo:200 mg/m3/2H	KCRZAE Kauchuk i Rezina.(11),(1985),38.

1,4-Dinitrosobenzene Consensus Reports

Reported in EPA TSCA Inventory.

1,4-Dinitrosobenzene Safety Profile

Poison by inhalation route. Moderately toxic by ingestion. When heated to decomposition it emits toxic vapors of NO_x.

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