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| CAS No.: | 697-91-6 |
|---|---|
| Name: | 2,6-Dichloro-1,4-benzoquinone |
| Molecular Structure: | |
|
|
|
| Formula: | C6H2 Cl2 O2 |
| Molecular Weight: | 176.987 |
| Synonyms: | Quinone,2,6-dichloro- (3CI); p-Benzoquinone, 2,6-dichloro- (8CI);2,6-Dichloro-1,4-benzoquinone; 2,6-Dichloro-p-benzoquinone;2,6-Dichlorobenzoquinone; 2,6-Dichloroquinone; NSC 6211 |
| EINECS: | 211-810-0 |
| Density: | 1.56g/cm3 |
| Melting Point: |
122-124 °C(lit.) |
| Boiling Point: | 241.5°C at 760 mmHg |
| Flash Point: | 98.5°C |
| Solubility: | Insoluble in water. Solubility in methanol (almost transparency). |
| Appearance: | yellow crystalline powder |
| Hazard Symbols: | Xi |
| Risk Codes: | 36/37/38 |
| Safety: | Moderately toxic by ingestion. Mutation data reported. When heated to decomposition it emits very toxic fumes of Cl−. |
| PSA: | 34.14000 |
| LogP: | 1.38360 |
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| Conditions | Yield |
|---|---|
| With oxygen; nitric acid In methanol at 20℃; for 2h; Sealed tube; | 99.4% |
| With perchloric acid; lead dioxide In acetic acid at 25℃; | 78% |
| With potassium peroxomonosulfate; citrate-phosphate-buffer; 5,10,15,20‐tetrakis‐(4‐sulfonatophenyl)‐porphyrin‐iron(III) chloride In acetonitrile for 0.0166667h; Product distribution; Ambient temperature; variation of catalyst, solvent, reaction time, oxidant; other methoxylated arenes; |
- 20103-10-0
2,6-dichloro-1,4-benzenediol
- 697-91-6
2,6-dichloro-1,4-benzoquinone
| Conditions | Yield |
|---|---|
| With (phthalocyaninato)iron(II); zeolite; air In 1,4-dioxane; water at 20℃; for 6h; | 94% |
| With cis-<(bpy)2(py)RuIV(O)>2+ (bpy = 2,2'-bipyridine, py = pyridine) In water at 20℃; Rate constant; var. pH; | |
| With iron(III) chloride |
- 103-84-4
Acetanilid
A
- 697-91-6
2,6-dichloro-1,4-benzoquinone
B
- 6975-29-7
N-(2,4-dichlorophenyl)acetamide
C
- 539-03-7
N-(4-chlorophenyl)acetamide
| Conditions | Yield |
|---|---|
| With hydrogenchloride; sodium chlorate In water; acetic acid at 20℃; for 5h; | A 7% B 88% C 4% |
- 100-66-3
methoxybenzene
A
- 553-82-2
1,3-dichloro-4-methoxybenzene
B
- 697-91-6
2,6-dichloro-1,4-benzoquinone
C
- 87-40-1
2,4,6-trichloroanisole
| Conditions | Yield |
|---|---|
| With hydrogenchloride; sodium chlorate In water; acetic acid at 20℃; for 1h; | A 86% B 3% C 4% |
| Conditions | Yield |
|---|---|
| With perchloric acid; cerium(III) perchlorate; cerium(IV) perchlorate Ambient temperature; | A 5% B 85% |
| With perchloric acid; cerium(III) perchlorate; cerium(IV) perchlorate In acetonitrile Ambient temperature; | A 10% B 80% |
| Conditions | Yield |
|---|---|
| With perchloric acid at 25℃; for 0.566667h; Electrochemical reaction; | 76% |
| Conditions | Yield |
|---|---|
| With perchloric acid; lead dioxide In acetic acid at 25℃; | 74% |
| With titanium superoxide; dihydrogen peroxide; acetic acid In water at 50℃; for 2h; | 32% |
| With dihydrogen peroxide; iron(III) meso-tetra(4-sulfonatophenyl)porphyrine chloride In water at 25℃; Kinetics; | |
| With ceric sulfate; ethylenediaminetetraacetic acid; sulfuric acid; dihydrogen peroxide In water at 25℃; pH=4; |
- 100-66-3
methoxybenzene
A
- 623-12-1
4-chloromethoxybenzene
B
- 553-82-2
1,3-dichloro-4-methoxybenzene
C
- 695-99-8
2-Chloro-1,4-benzoquinone
D
- 697-91-6
2,6-dichloro-1,4-benzoquinone
| Conditions | Yield |
|---|---|
| With hydrogenchloride; sodium chlorate In water; acetic acid at 20℃; for 12h; | A 15% B 68% C 4% D 1% |
- 104-04-1
N-(4-Nitrophenyl)acetamide
A
- 697-91-6
2,6-dichloro-1,4-benzoquinone
B
- 881-87-8
N-(2-chloro-4-nitrophenyl)acetamide
| Conditions | Yield |
|---|---|
| With hydrogenchloride; sodium chlorate In water; acetic acid at 20℃; for 20h; | A 17% B 58% |
- 88-06-2
2,4,6-Trichlorophenol
A
- 101-38-2
2,6-dichloroquinone-4-chloroimide
B
- 697-91-6
2,6-dichloro-1,4-benzoquinone
| Conditions | Yield |
|---|---|
| With sodium hydroxide; sulfuric acid In water for 0.75h; pH=6; Product distribution; Further Variations:; Reagents; pH-values; | A 35% B 55% |
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Chemistry
IUPAC Name: 2,6-Dichlorocyclohexa-2,5-diene-1,4-dione
Product Name: 2,6-Dichloro-1,4-benzoquinone
The MF of 2,6-Dichlorocyclohexa-2,5-diene-1,4-dione (CAS NO.697-91-6) is C6H2Cl2O2.
The MW of 2,6-Dichlorocyclohexa-2,5-diene-1,4-dione (CAS NO.697-91-6) is 176.98.
Synonyms of 2,6-Dichlorocyclohexa-2,5-diene-1,4-dione (CAS NO.697-91-6): 2,6-Dichloquinone ; 2,6-Dichloro-2,5-cyclohexa-diene-1,4-dione ; 2,6-Dichloro-2,5-cyclohexadiene-1,4-dione ; 2,6-Dichloro-1,4-benzoquinone
Product Categories: Anthraquinones, Hydroquinones and Quinones;Benzoquinones;C3 to C6;Carbonyl Compounds;Ketones Form: yellow crystalline powder
Index of Refraction: 1.568
EINECS: 211-810-0
Density: 1.56 g/ml
Flash Point: 98.5 °C
Boiling Point: 241.5 °C
Melting Point: 122-124 °C
Toxicity Data With Reference
| 1. | orl-rat LDLo:500 mg/kg | NCNSA6 National Academy of Sciences, National Research Council, Chemical-Biological Coordination Center, Review. 5 (1953),20. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Moderately toxic by ingestion. Mutation data reported. When heated to decomposition it emits very toxic fumes of Cl−.Safety information of 2,6-Dichlorocyclohexa-2,5-diene-1,4-dione (CAS NO.697-91-6):
Hazard Codes 
Xi
Risk Statements
36/37/38 Irritating to eyes, respiratory system and skin
Safety Statements
26 In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36 Wear suitable protective clothing
WGK Germany 3
RTECS DK4000000