CDN
1-Chloro-2,4-dinitrobenzene
CAS: 97-00-7
Molecular Formula: C6H3ClN2O4
CDN - Names and Identifiers
CDN - Physico-chemical Properties
| Molecular Formula | C6H3ClN2O4 |
| Molar Mass | 202.55 |
| Density | 314 |
| Melting Point | 48-50°C(lit.) |
| Boling Point | 315°C(lit.) |
| Flash Point | 367°F |
| Water Solubility | insoluble |
| Solubility | alcohol: very slightly soluble (cold)(lit.) |
| Vapor Presure | 1 hPa (106 °C) |
| Vapor Density | 6.98 (vs air) |
| Appearance | Crystalline Mass, Chunks or Crystals and Powder |
| Color | Yellow to brown |
| Odor | Almond-like |
| Merck | 14,2136 |
| BRN | 613161 |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents, ammonia. Reacts violently with hydrazine hydrate. |
| Explosive Limit | 1.9-22%(V) |
| Refractive Index | 1.5857 |
| Physical and Chemical Properties | density 314
flash point 186 ° C
water-soluble insoluble
boiling point 315 ℃
Melting Point: 50-54 °c |
| Use | Dyes, pesticides, pharmaceutical intermediates |
CDN - Risk and Safety
| Risk Codes | R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R33 - Danger of cumulative effects R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R43 - May cause sensitization by skin contact R41 - Risk of serious damage to eyes R38 - Irritating to the skin |
| Safety Description | S28 - After contact with skin, wash immediately with plenty of soap-suds. 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.) 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. S28A - S24 - Avoid contact with skin. |
| UN IDs | UN 3441 6.1/PG 2 |
| WGK Germany | 2 |
| RTECS | CZ0525000 |
| TSCA | Yes |
| HS Code | 2904 99 00 |
| Hazard Note | Toxic |
| Hazard Class | 6.1 |
| Packing Group | II |
| Toxicity | LD50 orally in Rabbit: 640 mg/kg LD50 dermal Rabbit 130 mg/kg |
CDN - Reference Information
Open Data Unverified Data
| LogP | 2.24 at 23.3℃ and pH3.5-5.5 |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| uses | mainly used as dyes, pesticides, pharmaceutical intermediates used as analytical reagents, also used in organic synthesis and the manufacture of dyes mainly used as raw materials for dyes, pesticides, pharmaceuticals and so on. Used in the manufacture of sulfur dyes, such as sulfide blue 3R, sulfide black BRN and RN, B2RN, BN, etc., the product is also dinitrophenol, dinitroaniline, picric acid, Nitro-o-aminophenol and other intermediates of raw materials. Can also be used for the manufacture of saccharin, pesticide two sodium nitrate powder. identification of nicotinic acid, nicotinamide and other pyridine compounds. The thiol of the thiol compound was assayed. Standards for the determination of carbon, hydrogen and chlorine by organic microanalysis. Organic synthesis |
| production method | 1. Obtained by two nitration of chlorobenzene with mixed acid. The continuous production is realized by the two nitrification process, and the production unit is mainly composed of four reaction columns. The mixed acid (nitric acid accounted for 33.1%, sulfuric acid accounted for 62.88%, the rest of the water) at 11.3/min, chlorobenzene at 3.18/min flow continuously through four reaction columns, the reaction temperature was controlled at 75-85 ℃, 100 ℃, 120±20 ℃ and 125±2 ℃, respectively. After about 3H of reaction, the reaction product was washed with water to obtain qualified product. 2. The by-products of p-and O-nitrochlorobenzene are mixed with acid for nitration and separation of waste acid, neutralized, washed with water and purified by crystallization to obtain the finished product, and produce 2,6-oil. |
| category | toxic substances |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 780 mg/kg |
| stimulation data | Skin-rabbits 2 mg/24 h severe; eye-rabbit 0.05 mg/24 h severe |
| explosive hazard characteristics | explosive when mixed with air |
| flammability hazard characteristics | flammable; Combustion explosion hazard in case of open flame or when heated to above 150 ℃; hyperthermic decomposition of toxic nitrogen oxides and chloride fumes |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from oxidants and food additives |
| fire extinguishing agent | water, foam, carbon dioxide |
| spontaneous combustion temperature | 464°C |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 19:43:38
CDN - Nature
Open Data Verified Data
light yellow needle Crystal, bitter almond flavor, toxic. Insoluble in water, soluble in alcohol, slightly soluble in ether and benzene.
Last Update：2024-01-02 23:10:35
CDN - Preparation Method
Open Data Verified Data
The product was obtained by twice nitration of chlorobenzene with mixed acid, and the reaction product was washed with water and separated.
Last Update：2022-01-01 10:06:58
CDN - Application
Open Data Verified Data
A molecular type polymerization inhibitor commonly used in industry, the amount of which is 0. 001% to 0.10%. Can be used for the manufacture of dyes, pesticides, pharmaceuticals, can also be used for the preparation of sulfide black dye, ice stain, saccharin, dinitroaniline, picric acid and nitro-o-aminobenzene and other products.
Last Update：2025-08-19 16:24:40
CDN - Safety
Open Data Verified Data
rat oral LD50: 1070mg/kg/rabbit percutaneous LD50:130mg/kg. Contact with the product can cause contact dermatitis, sensitization to the body. Can also cause bronchial asthma and other allergic reactions, may cause liver damage. Staff should be protected. In case of open flame, high heat or contact with oxidant, there is a risk of combustion explosion.
Last Update：2022-01-01 10:06:59
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