TETRACHLOROQUINONE
P-chloranil
CAS: 118-75-2
Molecular Formula: C6Cl4O2
TETRACHLOROQUINONE - Names and Identifiers
TETRACHLOROQUINONE - Physico-chemical Properties
| Molecular Formula | C6Cl4O2 |
| Molar Mass | 245.88 |
| Density | 1,97 g/cm3 |
| Melting Point | 295-296°C (dec.) |
| Boling Point | 290.07°C (rough estimate) |
| Flash Point | >100℃ |
| Water Solubility | insoluble |
| Solubility | Soluble in ether; slightly soluble in alcohol, hardly soluble in chloroform; carbon tetrachloro and carbon disulfide, almost insoluble in cold alcohol, insoluble in water. |
| Vapor Presure | 1 hPa (71 °C) |
| Appearance | Yellow green crystal or powder |
| Specific Gravity | 1.97 |
| Color | Clear |
| Maximum wavelength(λmax) | ['510nm(CH2Cl2)(lit.)'] |
| Merck | 14,2078 |
| BRN | 393006 |
| PH | 3.5-4.5 (100g/l, H2O, 20℃)(slurry) |
| Storage Condition | Store below +30°C. |
| Sensitive | Sensitive to light |
| MDL | MFCD00001594 |
| Physical and Chemical Properties | Golden yellow leaf-like crystal. Melting Point 290 °c. Soluble in ether, slightly soluble in alcohol, difficult to dissolve in chloroform, carbon tetrachloride and carbon disulfide, almost insoluble in cold alcohol, insoluble in water. |
| Use | For dyes, pharmaceutical and pesticide intermediates |
TETRACHLOROQUINONE - Risk and Safety
| Risk Codes | R36/38 - Irritating to eyes and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R20 - Harmful by inhalation |
| Safety Description | S37 - Wear suitable gloves. S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S22 - Do not breathe dust. |
| UN IDs | UN 3077 9/PG 3 |
| WGK Germany | 2 |
| RTECS | DK6825000 |
| FLUKA BRAND F CODES | 8 |
| TSCA | Yes |
| HS Code | 29147090 |
| Hazard Class | 9 |
| Packing Group | III |
| Toxicity | LD50 orally in Rabbit: 4000 mg/kg |
TETRACHLOROQUINONE - Upstream Downstream Industry
| Downstream Products | Pigment Violet 23 |
TETRACHLOROQUINONE - Reference Information
| LogP | 2.3 at 20℃ |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | used as dye intermediate and agricultural seed dressing agent. Tetrachloroquinone is reduced with sulfur dioxide at room temperature to obtain tetrachlorohydroquinone, which is an intermediate of pesticides and polymer compounds. In the pharmaceutical industry, it is used for the production of the anti-malignant tumor drug imidoquinone and the anti-aldosterone drug spironolactone. Used as dye, medicine and pesticide intermediate Used as dye, medicine and pesticide intermediate Used as dye intermediate and agricultural seed dressing agent. Used for the detection of primary and secondary amines. |
| production method | obtained by oxidation of pentachlorophenol. Add 20% sodium pentachlorophenol solution into the reaction kettle, acidify with equimolar 35% hydrochloric acid, and stir into paste. Then add anhydrous ferric chloride according to 6% of the weight of sodium pentachlorophenol, raise the temperature to above 70 ℃, start to pass chlorine, and keep the reaction temperature above 95 ℃ until the reaction oil is completely clear and no particles are the end point. Divide the water layer, cancel the acidification of the same substance and add 98% concentrated sulfuric acid to obtain tetrachlorobenzoquinone. |
| category | pesticide |
| toxicity classification | poisoning |
| acute toxicity | oral-rat LD50: 4000 mg/kg |
| flammability hazard characteristics | combustion produces toxic chloride gas |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from food raw materials storage and transportation |
| fire extinguishing agent | dry powder, foam, sand |
| spontaneous combustion temperature | >400°C |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 19:05:09
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Downstream Products for TETRACHLOROQUINONE