m-chloronitrobenzene
1-Chloro-3-nitrobenzene
CAS: 121-73-3
Molecular Formula: C6H4ClNO2
m-chloronitrobenzene - Names and Identifiers
m-chloronitrobenzene - Physico-chemical Properties
| Molecular Formula | C6H4ClNO2 |
| Molar Mass | 157.55 |
| Density | 1.534g/mLat 25°C(lit.) |
| Melting Point | 43-47°C(lit.) |
| Boling Point | 236°C(lit.) |
| Flash Point | 218°F |
| Water Solubility | INSOLUBLE |
| Solubility | alcohol: freely soluble (hot)(lit.) |
| Vapor Presure | 1.9Pa at 25℃ |
| Appearance | powder to lump to clear liquid |
| Color | White or Colorless to Yellow |
| Merck | 14,2151 |
| BRN | 1907947 |
| PH | 7 (0.26g/l, H2O, 20℃) |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Incompatible with strong oxidizing agents, strong acids, strong reducing agents. |
| Refractive Index | 1.5545 (estimate) |
| Physical and Chemical Properties | Character: light yellow rhombic prism. melting point 46 ℃ boiling point 235.6 ℃ relative density 1.343 flash point 127 ℃ solubility, most organic solvents such as benzene. |
| Use | Used in the manufacture of M-chloroaniline, azo dyes, pigments, drugs, pesticides, etc |
m-chloronitrobenzene - Risk and Safety
| Risk Codes | R22 - Harmful if swallowed R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. 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. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S38 - In case of insufficient ventilation, wear suitable respiratory equipment. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S28A - |
| UN IDs | UN 1578 6.1/PG 2 |
| WGK Germany | 2 |
| RTECS | CZ0940000 |
| TSCA | Yes |
| HS Code | 29049085 |
| Hazard Class | 6.1 |
| Packing Group | II |
m-chloronitrobenzene - Upstream Downstream Industry
| Raw Materials | Sulfuric acid Nitric acid Chlorobenzene |
m-chloronitrobenzene - Nature
Open Data Verified Data
light yellow orthorhombic crystals. Melting Point: stable 46 deg C; Unstable 24 deg C. Boiling point 235.6 °c (10 L kPa). Flash point 127 °c. The relative density was 1. 343. Slightly soluble in water, soluble in ethanol, ether, benzene and other most organic solvents. After combustion, it is decomposed into toxic gases such as nitrogen oxide and hydrogen chloride.
Last Update：2024-01-02 23:10:35
m-chloronitrobenzene - Preparation Method
Open Data Verified Data
- iron filings and dry nitrobenzene were added to the chlorination Tower, chlorine was introduced, and the reaction temperature was controlled at 40-55 °c. When the reaction product reaches a density of 1.35g/cm3 and a freezing point of 23 ° C., the end point of the reaction is reached. The chloride is washed with water, neutralized, distilled under reduced pressure, cooled, crystallized and separated to obtain a finished product.
- in the production of p-nitrochlorobenzene, there is a small amount of by-products, which can be enriched in meta-position, followed by distillation and crystallization to obtain the finished product.
Last Update：2022-01-01 10:44:42
m-chloronitrobenzene - Use
Open Data Verified Data
organic synthesis raw materials, dye intermediates, in the system of M-chloroaniline, also used in the pharmaceutical industry.
Last Update：2022-01-01 10:44:42
m-chloronitrobenzene - Safety
Open Data Verified Data
- This product is toxic. Mouse oral ld50390 mg/kg. Can cause poisoning through the human respiratory system and skin. Production sites require equipment to be sealed and well ventilated. The operator should wear protective gear.
- It is packed in iron drum with a net weight of 200kg per drum. Store in a cool, dry, ventilated place. Storage and Transportation to moisture, sun protection, fire.
Last Update：2022-01-01 10:44:43
m-chloronitrobenzene - Reference Information
| LogP | 2.49 |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Uses | Used in the manufacture of m-chloroaniline, azo dyes, pigments, drugs, pesticides, etc. Organic synthetic raw materials, dye intermediates, Used to make m-chloroaniline, also used in the pharmaceutical industry. used in organic synthesis, also used as dye intermediates biochemical research m-chloronitrobenzene is an important dye, pharmaceutical intermediates, mainly used for the synthesis of m-chloraniline, m-dichlorobenzene, etc. This product is an important dye and pharmaceutical intermediate, mainly used for the synthesis of m-chloroaniline, m-dichlorobenzene, etc. |
| Production method | 1. It is obtained by chlorination of nitrobenzene in the presence of iron filings. Dry nitrobenzene and iron filings were added to the chlorination tower, and chlorine gas was passed. The reaction temperature was controlled at 40-45 ℃. When the relative density of the reaction material is 1.35(25 ℃) and the freezing point is 23 ℃, it is the end point and chlorine application is stopped. Blowing chlorine and hydrogen chloride with compressed air for 3h, washing chloride material with water to neutral, carrying out vacuum fractionation, cutting fractions with freezing point above 22 ℃ into crystallizer, cooling, cooling to 13 ℃, keeping for 2h, then heating up to 43 ℃, melting materials in crystallizer to obtain products. 2. There is a small amount of by-product in the production of p-nitrochlorobenzene, which can be enriched and then rectified and crystallized to obtain the finished product. |
| category | toxic substances |
| toxicity classification | highly toxic |
| acute toxicity | oral-rat LD50:420 mg/kg; Oral-mouse LD50:380 mg/kg |
| flammability hazard characteristics | Combustible in case of open flame; Combustion produces toxic chloride and nitrogen oxide smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Store separately from oxidants and food additives |
| fire extinguishing agent | carbon dioxide, foam, sand, mist water |
| occupational standard | TWA 1 mg/m3; STEL 2 mg/m3 |
| auto-ignition temperature | 500 °F |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:01:54
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Raw Materials for m-chloronitrobenzene