393-75-9
4-Chloro-3,5-dinitrobenzotrifluoride
CAS: 393-75-9
Molecular Formula: C7H2ClF3N2O4
393-75-9 - Names and Identifiers
393-75-9 - Physico-chemical Properties
| Molecular Formula | C7H2ClF3N2O4 |
| Molar Mass | 270.55 |
| Density | 1.6 |
| Melting Point | 50-55 °C (lit.) |
| Boling Point | >250°C |
| Flash Point | 126°C |
| Water Solubility | Insoluble in water. |
| Solubility | water: insoluble |
| Appearance | powder to crystal |
| Color | Light yellow to Yellow to Orange |
| Exposure Limit | ACGIH: TWA 2.5 mg/m3NIOSH: IDLH 250 mg/m3 |
| BRN | 1220937 |
| Storage Condition | Sealed in dry,Room Temperature |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Physical and Chemical Properties | This product is light yellow solid, m. P. 56~58 ℃, relative density 1.6085, soluble in benzene, toluene and other organic solvents. |
| Use | Used as an intermediate in organic synthesis |
393-75-9 - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R24 - Toxic in contact with skin R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36 - Wear suitable protective clothing. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 2811 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | XS9065000 |
| TSCA | T |
| HS Code | 29049085 |
| Hazard Note | Irritant |
| Hazard Class | 6.1 |
| Packing Group | II |
393-75-9 - Nature
Open Data Verified Data
light yellow crystals at room temperature. The melting point was 56-58 °c. Soluble in benzene, toluene and other organic solvents. This product is toxic.
Last Update：2024-01-02 23:10:35
393-75-9 - Preparation Method
Open Data Verified Data
with p-chloro trifluoromethyl benzene as raw material, 4-chloro -3-Nitro trifluoromethyl benzene was prepared by one nitration, and then the product was prepared by two nitration. The raw material consumption per It product produced by this method is: 780kg of p-chloro-trifluoromethyl benzene, l00kg of nitric acid and 4500kg of sulfuric acid.
Last Update：2022-01-01 10:50:53
393-75-9 - Application
Open Data Verified Data
This product is mainly used for the production of pesticides, is the intermediate of the dry field herbicide trifluralin, the drug is an excellent dry field herbicide.
Last Update：2025-08-19 16:24:40
393-75-9 - Safety
Open Data Verified Data
This product is toxic, its vapor has a strong stimulating effect on the respiratory system, causing respiratory obstruction, especially for the optic nerve can cause serious damage to the skin, resulting in marked redness and nodular eczema. The maximum allowable concentration in the air of the workplace is 1mg/m3.
Last Update：2025-06-10 22:55:16
393-75-9 - Reference Information
| LogP | 2.5 |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Uses | 3, 5-dinitro-4-chlorotrifluorotoluene is an intermediate of the plant growth regulator flufluramide and the herbicide trifluralin. This product is mainly used for the production of pesticides. It is an intermediate of the dry field herbicide trifluralin. This medicine is an excellent dry field herbicide. This product is also an important intermediate for medicine and dyes. Used as an intermediate in organic synthesis |
| production method | using p-chloro-trifluoromethyl benzene as raw material, 4-chloro-3-nitrotrifluoromethyl benzene is prepared by nitration, and then the product is prepared by dinitrification. Raw material consumption quota: 780kg/t for chlorinated trifluoromethyl benzene, 1000kg/t for nitric acid and 4500kg/t for sulfuric acid. the preparation method is to nitrification with p-chlorotrifluorotoluene, and to carry out nitration and dinitrification respectively. Nitrification: nitrification reaction is carried out with nitrification waste acid. Under the conditions of stirring, cooling and reflux, p-chlorotrifluorotoluene is added dropwise to the nitrification reactor to control the dropping acceleration to control the reaction temperature. When the reaction reaches the end point, water is dropped until the waste acid contains about 480% H2SO, stirring is stopped, stratified in standing, the waste acid is fed into the waste acid treatment device, and the nitrobase is put into the storage tank to prepare for nitrification. Two nitrification: the preparation of fuming sulfuric acid and nitric acid into a mixed acid, into a nitrification reaction kettle, stirring under the dropwise addition of a nitrobase, after the dropwise addition, heat preservation reaction to the end. Stop stirring, standing in stratification, separation of waste acid, dinitrobase by neutralization, washing, removal of nitroso compounds is the finished product. |
| category | toxic substances |
| toxicity classification | poisoning |
| acute toxicity | oral-rat LD50: 930 mg/kg |
| flammability hazard characteristics | flammability; fire scene decomposition of toxic nitrogen oxides; fluoride and chloride smoke |
| storage and transportation characteristics | warehouse low temperature, ventilation, drying |
| fire extinguishing agent | water, carbon dioxide, dry powder, sand |
| occupational standard | STEL 0.05 mg/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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