nsc-7189
1,3-Dinitrobenzene
CAS: 99-65-0
Molecular Formula: C6H4N2O4
nsc-7189 - Names and Identifiers
| Name | 1,3-Dinitrobenzene |
| Synonyms | nsc-7189 Dinitrobenzene M-DINITROBENZENE m-dimitrobenzene m-Dinitrobenzene 1,3-Dinitrobenzene M-DinitrobenzeneGr 2,4-Dinitrobenzene 1,3-DINITRO BENZENE MI 1,3-DINITROBENZENE OEKANAL, 250 MG |
| CAS | 99-65-0 |
| EINECS | 202-776-8 |
| InChI | InChI=1/C6H4N2O4/c9-7(10)5-2-1-3-6(4-5)8(11)12/h1-4H |
nsc-7189 - Physico-chemical Properties
| Molecular Formula | C6H4N2O4 |
| Molar Mass | 168.11 |
| Density | 1.575 |
| Melting Point | 86 °C |
| Boling Point | 297°C(lit.) |
| Flash Point | 150 °C |
| Water Solubility | 500 mg/L (20 ºC) |
| Vapor Presure | 8.15 x 10-4 mmHg at 35 °C (Hine et al., 1963) |
| Appearance | solid |
| Specific Gravity | 1.368 |
| Color | White to yellowish crystals |
| Exposure Limit | NIOSH REL: TWA 1, IDLH 50; OSHA PEL: TWA 1; ACGIH TLV:TWA 0.15 ppm for all isomers (adopted). |
| Merck | 14,3273 |
| BRN | 1105654 |
| Storage Condition | 2-8°C |
| Stability | Stable. Incompatible with reducing agents, oxidizing agents, strong bases. May explode if heated. |
| Refractive Index | 1.4660 (estimate) |
| Physical and Chemical Properties | Light yellow crystals. Melting point 90.02 ℃(89.57 ℃), boiling point 291 ℃(100.8kPa),167 ℃(1.87kPa), relative density 1.571(0/4 ℃). Soluble in benzene, chloroform, ethyl acetate, soluble in alcohol, water-soluble. Can be volatilized with water vapor. |
| Use | Mainly used in the manufacture of M-phenylenediamine, M-dichlorobenzene and other dyes, pesticides and pharmaceutical intermediates |
nsc-7189 - Risk and Safety
| Risk Codes | R26/27/28 - Very 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. R40 - Limited evidence of a carcinogenic effect R36/37/38 - Irritating to eyes, respiratory system and skin. R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R11 - Highly Flammable R52/53 - Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R36 - Irritating to the eyes R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| 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 - S27 - Take off immediately all contaminated clothing. S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 3443 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | CZ7350000 |
| TSCA | Yes |
| HS Code | 29042090 |
| Hazard Class | 6.1 |
| Packing Group | II |
| Toxicity | LD50 in male, female rats (mg/kg): 91, 81 orally (Cody) |
nsc-7189 - Nature
Open Data Verified Data
colorless or light yellow solid, volatile. Soluble in chloroform, ethyl acetate, soluble in ethanol, ether and benzene, water-soluble. Can be volatilized with water vapor. It is flammable in case of open flame and high heat. Mixing with an oxidizing agent can form an explosive mixture. Combustion or explosion may be caused by friction, shock, or impact.
Last Update：2025-06-10 22:55:16
nsc-7189 - Preparation Method
Open Data Verified Data
from nitrobenzene by concentrated sulfuric acid and nitric acid mixed acid nitration.
Last Update：2022-01-01 10:07:00
nsc-7189 - Application
Open Data Verified Data
used as a molecular type polymerization inhibitor in polymerization reaction, the amount is about O. O 01% ~ 0.10%. This product is reduced with ammonium sulfide to produce m-nitroaniline, with strong reducing agent reduction to produce m-phenylenediamine, is an intermediate of dyes and organic synthesis.
Last Update：2025-08-19 16:24:40
nsc-7189 - Safety
Open Data Verified Data
This product is a strong methemoglobin-forming agent. Methemoglobinemia was more potent than nitrobenzene and recovered more slowly. It is strictly prohibited to mix with acids, oxidants, food and food additives.
Last Update：2025-06-10 22:55:16
nsc-7189 - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | It is mainly used as an intermediate for dyes, pigments and other organic synthesis. In the isomers of dinitrobenzene, the use of M-dinitrobenzene is more. used as analytical reagent, also used in organic synthesis mainly used in the manufacture of M-phenylenediamine, M-dichlorobenzene and other dyes, pesticides and pharmaceutical intermediates |
| production method | is obtained by nitration of nitrobenzene by mixed acid. The crude dinitrobenzene was refined with sodium sulfite solution. The refined filtrate mainly contains sodium nitrobenzenesulfonate, which is the reaction product of O-dinitrobenzene and p-dinitrobenzene with sodium sulfite. When nitrobenzene was nitrated with mixed acid, M-dinitrobenzene accounted for about 88%, O-dinitrobenzene accounted for 10%, P-dinitrobenzene accounted for 2%. Isomer separation method, there is the use of three different solubility of ethanol or benzene and the design of the post-treatment process. |
| category | flammable solid |
| toxicity grade | high toxicity |
| Acute toxicity | oral-rat LD50: 59.5 mg/kg; Oral-mouse LD50: 74.7 mg/kg |
| stimulation data | eye-rabbit 100 Mg |
| explosive hazard characteristics | explosive mixture with oxidant |
| flammability hazard characteristics | in case of fire, high temperature, oxidant flammable; toxic NOx smoke from combustion |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from the oxidant |
| extinguishing agent | water, dry sand, carbon dioxide, foam, 1211 extinguishing agent |
| Occupational Standard | TLV-TWA 0.15 PPM |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:04:16
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Product Name: m-Dinitrobenzene Visit Supplier Webpage Request for quotationCAS: 99-65-0
Tel: 400-968-2212
Email: 3623107365@qq.com
Mobile: 18916960931
QQ: 3623107365
Wechat: 18916960931
Spot supply
Product Name: m-Dinitrobenzene Visit Supplier Webpage Request for quotationCAS: 99-65-0
Tel: +86 0571-86722205
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QQ: 2531159185
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View History
nsc-7189
L-LYS AC
6738-23-4
butyl
1467-16-9
Allyl Methanethiosulfonate
30880-06-9
calciumperoxide[ca(o2)]
talamo
GRANISETRON HCL
L-LYS AC
6738-23-4
butyl
1467-16-9
Allyl Methanethiosulfonate
30880-06-9
calciumperoxide[ca(o2)]
talamo
GRANISETRON HCL