o,p-Dichlorobenzene mixture
o-dichlorobenzene
CAS: 95-50-1
Molecular Formula: C6H4Cl2
o,p-Dichlorobenzene mixture - Names and Identifiers
o,p-Dichlorobenzene mixture - Physico-chemical Properties
| Molecular Formula | C6H4Cl2 |
| Molar Mass | 147.002 |
| Density | 1.297g/cm3 |
| Melting Point | -15℃ |
| Boling Point | 180.5°C at 760 mmHg |
| Flash Point | 65.6°C |
| Water Solubility | 0.13 g/L (20℃) |
| Vapor Presure | 1.21mmHg at 25°C |
| Refractive Index | 1.548 |
| Physical and Chemical Properties | Characteristics of colorless liquid flow, with flavor. melting point -15 ℃ boiling point 180.5 ℃ relative density 1.3022 refractive index 1.5501 flash point 71 ℃ solubility insoluble in water, it is miscible with ethanol, ether and benzene. |
| Use | Mainly used in medicine, pesticide, organic synthesis, and as a solvent |
o,p-Dichlorobenzene mixture - Risk and Safety
| Hazard Symbols | Xn - Harmful N - Dangerous for the environment  |
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S23 - Do not breathe vapour. 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. |
| UN IDs | UN 1591 |
o,p-Dichlorobenzene mixture - Upstream Downstream Industry
o,p-Dichlorobenzene mixture - Nature
Open Data Verified Data
colorless flowing liquid, aromatic, flammable. The relative density was 1. 3022. Melting Point -15 °c. Boiling point 180.5 °c. Refractive index 5501. Spontaneous ignition point was 647. 78 ℃. Insoluble in water, with ethanol, ether and benzene miscible.
Last Update：2024-01-02 23:10:35
o,p-Dichlorobenzene mixture - Preparation Method
Open Data Verified Data
prepared from chlorobenzene by-product and by synthetic methods.
- recovery method of by-product of chlorobenzene. In the process of producing monochlorobenzene, the material of the tower after distilling out the monochlorobenzene product is the raw material for producing dichlorobenzene. After the mixture of dichlorobenzene is distilled off by vacuum distillation and then crystallized in the crystallizer, the mother liquor is a mixture mainly composed of O-dichlorobenzene.
- with O-chloroaniline as raw material, by diazotization, substitution derived. O-chloroaniline and hydrochloric acid were added to the reaction pot, mixed well below 25 ° C., cooled to 0 ° C., dropped into sodium nitrite solution, and the temperature was maintained at 0-5 ° C. To obtain diazonium salt solution, and Cu was added. Cl2 hydrochloric acid solution, fully stirred, mixed, heated to 60~70 ℃, reaction for 1 hour, cooling, static stratification, oil layer with 5% sodium hydroxide and water washing repeatedly, anhydrous calcium chloride dehydration, fractional collection boiling range of 177~183 deg C fraction, that is, to obtain the finished product.
Last Update：2022-01-01 10:40:31
o,p-Dichlorobenzene mixture - Use
Open Data Verified Data
Special Purpose Solution, remove carbon and lead on engine parts; As anti-rust agent, degreasing agent, remove metal surface coating without corrosion of metal; Paint solvent, the dye industry is used for the manufacture of reduced Blue CLB and reduced Blue CLG, etc.; Polymer wet spinning solvent, reduce the thermal shrinkage rate of fiber; Epoxy resin diluent, coolant, heat exchange medium; Also used for the preparation of pesticides, long-acting sulfonamides, etc.
Last Update：2022-01-01 10:40:31
o,p-Dichlorobenzene mixture - Safety
Open Data Verified Data
- This product has high irritation, swallowing and inhalation have moderate toxicity. Rat oral LD50 500mg/kg. The maximum allowable concentration in air is 50 × 10 -6. The workplace should be well ventilated, the equipment should be sealed, and the operator should wear protective equipment.
- packed in iron drum, 200kg per barrel. During the storage and transportation of the shock, sun protection, fire, moisture, pay attention to safety. According to the provisions of toxic substances storage and transportation.
Last Update：2022-01-01 10:40:32
o,p-Dichlorobenzene mixture - Introduction
introduction
dichlorobenzene mainly refers to p-dichlorobenzene and o-dichlorobenzene, which is an important fine chemical raw material. The nomenclature of the o-dichlorobenzene system is written as 1,2-dichlorobenzene, also referred to as o-DCB. After inhaling 1, 2-dichlorobenzene, respiratory irritation, headache, dizziness, anxiety, anesthesia, resulting in unconsciousness. Liquid o-dichlorobenzene and high-concentration o-dichlorobenzene vapor are irritating to the eyes and can be absorbed through the skin to cause poisoning, which is similar to inhalation. Oral administration causes gastrointestinal reactions. Skin contact can cause erythema and edema. Ortho-dichlorobenzene is flammable, toxic and irritating.
Preparation
78kg of benzene and 0.1kg of catalyst (5,10,15,20-tetraphenyl iron porphyrin) were added to the reaction device, and 145kg of chlorine was introduced to react. The reaction temperature was 70-120 degrees, the reaction pressure was 1-4 atmospheres, and the reaction time was 2-7 hours. Use a proper amount of water to absorb the hydrogen chloride gas generated by the reaction. The solution after the reaction is distilled to obtain a mixture of chlorobenzene and o-dichlorobenzene. The mixture is washed with a sodium hydroxide solution with a mass concentration of 5%, dried, and then rectified to obtain 135kg of o-dichlorobenzene with a purity of 99.5%. And a small amount of chlorobenzene. The residue in the reactor was directly used in the subsequent reaction, and the yield of o-dichlorobenzene was 98%.
chemical properties
colorless flowing liquid with fragrance. Insoluble in water, miscible with ethanol, ether and benzene.
use
- o-dichlorobenzene can be used as a solvent for wax, gum, resin, tar, rubber, oil and asphalt. it is used in the production of dye Shilin black and Shilin yellow brown, high-grade pigment, drug chlorhexidine and polyurethane raw material TDI. The product can be used as an insecticide for termites, locusts, and perforated insects, for the production of trichloroinsecticidal ester, thyronyl ester, and Xinyan Ling, and can also be used to synthesize catechol, fluorochloroaniline, 3, 4-dichloroaniline and o-phenylenediamine. Ortho-dichlorobenzene, as an anti-rust agent and degreasing agent, can remove carbon and lead from engine parts, remove the coating on the metal surface without corroding the metal, and remove sulfur from the lighting gas. It can be used as an ingredient for metal polishing agents. The dye industry is also used to manufacture reduced blue CLB and reduced blue CLG, etc. Polymer wet spinning solvent reduces fiber heat shrinkage rate; Epoxy resin diluent, coolant, heat exchange medium; Pharmaceutical long-acting sulfonamide, etc.
- used as a special solvent and rust inhibitor, degreasing agent, also used to make epidemic prevention agents, insecticides, disinfectants, etc., can also prepare dyestuff blue CLB and CLG, etc.
- Mainly used in medicine, pesticides, organic synthesis, and as a solvent
production method
by-product of chlorobenzene and prepared by synthetic method. 1. Chlorobenzene by-product recovery Whether the benzene liquid phase chlorination method or the benzene gas phase oxychlorination method is used to produce chlorobenzene, dichlorobenzene is co-produced. According to the actual demand, the chlorination process conditions can be changed to adjust the production ratio of monochlorobenzene and dichlorobenzene. According to the current process control conditions and production conditions of chlorobenzene, the ratio of chlorobenzene to dichlorobenzene is 30-35:1. The industrial separation methods of ortho-and para-dichlorobenzene mainly include rectification and crystallization. 2. The o-chloroaniline and hydrochloric acid are added to the reaction pot by diazotization and replacement, and mixed evenly below 25 ℃. Cooling to 0 ℃, dropping sodium nitrite solution, maintaining the temperature at 0~5 ℃, until potassium iodide starch liquid turns blue, stop feeding, and obtain diazonium salt solution. Add cuprous chloride in hydrochloric acid solution at 0~5 ℃, stir and mix well, raise the temperature to 60~70 ℃, react for 1h, cool and stand for stratification, repeatedly wash the oil layer with 5% sodium hydroxide and water, dehydrate and fractionate with anhydrous calcium chloride, collect the fraction at 177~183 ℃, and obtain the finished product.
category pesticides
toxicity classification poisoning
acute toxicity oral-rat LD50: 500 mg/kg; oral-mouse LD50: 4386 mg/kg
stimulation data eyes-rabbit 100 mg/30 s mild
Explosive hazard characteristics Explosive when mixed with air
Flammability hazard characteristics Open flame is combustible; combustion produces toxic chloride smoke
Storage and transportation characteristics The warehouse is ventilated and dry at low temperature; stored separately from oxidants and food additives
fire extinguishing agent mist water, foam, carbon dioxide, sand
occupational standard TWA 300 mg/m3; STEL 450 mg/m3
Last Update：2024-04-09 20:52:54
Supplier List
Spot supply
Product Name: o-dichlorobenzene Request for quotationCAS: 95-50-1
Tel: +86-17505207175
Email: r@reformchem.com
Mobile: +86-17505207175
QQ: 3787852685
Wechat: chemical6666
Product Name: o-dichlorobenzene Request for quotation
CAS: 95-50-1
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
CAS: 95-50-1
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Spot supply
Product Name: o-dichlorobenzene Request for quotationCAS: 95-50-1
Tel: +86-18721521379
Email: 18721521379@163.com
Mobile: +86-18721521379
Wechat: 18721521379
Spot supply
Product Name: o-dichlorobenzene Request for quotationCAS: 95-50-1
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3785839865
Wechat: chemical6666
Product Name: o-dichlorobenzene Request for quotation
CAS: 95-50-1
Tel: +86 18942506900
Email: 492657010@qq.com
Mobile: +86 18942506900
QQ: 492657010
Wechat: +86 18942506900
WhatsApp: +86 18942506900
Linkedin: +86 18942506900
CAS: 95-50-1
Tel: +86 18942506900
Email: 492657010@qq.com
Mobile: +86 18942506900
QQ: 492657010
Wechat: +86 18942506900
WhatsApp: +86 18942506900
Linkedin: +86 18942506900
Spot supply
Product Name: O-Dichlorobenzene Visit Supplier Webpage Request for quotationCAS: 95-50-1
Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185
Wechat: chinaskyrun
Spot supply
Product Name: 1,2-Dichlorobenzene Visit Supplier Webpage Request for quotationCAS: 95-50-1
Tel: +86-400-900-4166
Email: product@acmec-e.com
Mobile: +86-18621343501
QQ: 2881950922
Wechat: 18621343501
WhatsApp: +86-18621343501
Product Name: o-dichlorobenzene Request for quotation
CAS: 95-50-1
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
CAS: 95-50-1
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
Product Name: O-dichlorobenzene Request for quotation
CAS: 95-50-1
Tel: +86-21-56795779
Email: charles7788@worldyachem.com
Mobile: +86-13651600618
QQ: 2850607228
Wechat: +8613651600618
WhatsApp: +8613651600618
CAS: 95-50-1
Tel: +86-21-56795779
Email: charles7788@worldyachem.com
Mobile: +86-13651600618
QQ: 2850607228
Wechat: +8613651600618
WhatsApp: +8613651600618
Spot supply
Product Name: o-dichlorobenzene Request for quotationCAS: 95-50-1
Tel: +86-17505207175
Email: r@reformchem.com
Mobile: +86-17505207175
QQ: 3787852685
Wechat: chemical6666
Product Name: o-dichlorobenzene Request for quotation
CAS: 95-50-1
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
CAS: 95-50-1
Tel: 17505222756
Email: pules.cn@gmail.com
Mobile: +86-17551318830
Spot supply
Product Name: o-dichlorobenzene Request for quotationCAS: 95-50-1
Tel: +86-18721521379
Email: 18721521379@163.com
Mobile: +86-18721521379
Wechat: 18721521379
Spot supply
Product Name: o-dichlorobenzene Request for quotationCAS: 95-50-1
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3785839865
Wechat: chemical6666
Product Name: o-dichlorobenzene Request for quotation
CAS: 95-50-1
Tel: +86 18942506900
Email: 492657010@qq.com
Mobile: +86 18942506900
QQ: 492657010
Wechat: +86 18942506900
WhatsApp: +86 18942506900
Linkedin: +86 18942506900
CAS: 95-50-1
Tel: +86 18942506900
Email: 492657010@qq.com
Mobile: +86 18942506900
QQ: 492657010
Wechat: +86 18942506900
WhatsApp: +86 18942506900
Linkedin: +86 18942506900
Spot supply
Product Name: O-Dichlorobenzene Visit Supplier Webpage Request for quotationCAS: 95-50-1
Tel: +86 0571-86722205
Email: sales@chinaskyrun.com
Mobile: +8618958170122
QQ: 2531159185
Wechat: chinaskyrun
Spot supply
Product Name: 1,2-Dichlorobenzene Visit Supplier Webpage Request for quotationCAS: 95-50-1
Tel: +86-400-900-4166
Email: product@acmec-e.com
Mobile: +86-18621343501
QQ: 2881950922
Wechat: 18621343501
WhatsApp: +86-18621343501
Product Name: o-dichlorobenzene Request for quotation
CAS: 95-50-1
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
CAS: 95-50-1
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
Product Name: O-dichlorobenzene Request for quotation
CAS: 95-50-1
Tel: +86-21-56795779
Email: charles7788@worldyachem.com
Mobile: +86-13651600618
QQ: 2850607228
Wechat: +8613651600618
WhatsApp: +8613651600618
CAS: 95-50-1
Tel: +86-21-56795779
Email: charles7788@worldyachem.com
Mobile: +86-13651600618
QQ: 2850607228
Wechat: +8613651600618
WhatsApp: +8613651600618
View History
o,p-Dichlorobenzene mixture
Micro-emulsification cutting oil
1415562-60-5
2-[(2,6-Dichlorophenyl)amino]benzaldehyde
分散兰 56
2,4-Dinitrophenyl butylate
6118-65-6
7-METHOXY-1H-INDOLE-2-CARBALDEHYDE
N-(2-Chloro-6-methylphenyl)-2-[(6-chloro-2-methyl-4-pyrimidinyl)amino]-5-thiazolecarboxamide
2-aminopyrido[1,2-a][1,3,5]triazin-4-one
Micro-emulsification cutting oil
1415562-60-5
2-[(2,6-Dichlorophenyl)amino]benzaldehyde
分散兰 56
2,4-Dinitrophenyl butylate
6118-65-6
7-METHOXY-1H-INDOLE-2-CARBALDEHYDE
N-(2-Chloro-6-methylphenyl)-2-[(6-chloro-2-methyl-4-pyrimidinyl)amino]-5-thiazolecarboxamide
2-aminopyrido[1,2-a][1,3,5]triazin-4-one
Raw Materials for o,p-Dichlorobenzene mixture
Downstream Products for o,p-Dichlorobenzene mixture
Coumarin 6
Pigment Geen 7
Butyl isocyanate
Mebendazole
VAT BLACK 27
3-Chloro-4-fluoroaniline
Permanent Violet RL
2,6-Dichlorobenzonitrile
3,4-Dichloronitrobenzene
1,3-Dichloroisoquinoline
4-(3-METHYL-UREIDO)-BENZENESULFONYL CHLORIDE
1,2,4,5-BENZENETETRACARBOXAMIDE
N,N,N',N'-Tetraphenylbenzidine
2,7-DIBROMO-9H-CARBAZOLE
2,4,6-Trimethoxybenzaldehyde
PYROMELLITIC DIIMIDE
3,7-dichloro-8-chloro methyl quinoline
4,5-Dichloro-1,2-benzenediamine
3,4-Dichlorobenzophenone
Pigment Red 176
(3,4-Diaminophenyl)phenylmethanone
Acetofenate
C. I. Pigment Yellow 173
3,4-Dichlorobenzaldehyde
DICHLORPHENAMIDE
Pigment Geen 7
Butyl isocyanate
Mebendazole
VAT BLACK 27
3-Chloro-4-fluoroaniline
Permanent Violet RL
2,6-Dichlorobenzonitrile
3,4-Dichloronitrobenzene
1,3-Dichloroisoquinoline
4-(3-METHYL-UREIDO)-BENZENESULFONYL CHLORIDE
1,2,4,5-BENZENETETRACARBOXAMIDE
N,N,N',N'-Tetraphenylbenzidine
2,7-DIBROMO-9H-CARBAZOLE
2,4,6-Trimethoxybenzaldehyde
PYROMELLITIC DIIMIDE
3,7-dichloro-8-chloro methyl quinoline
4,5-Dichloro-1,2-benzenediamine
3,4-Dichlorobenzophenone
Pigment Red 176
(3,4-Diaminophenyl)phenylmethanone
Acetofenate
C. I. Pigment Yellow 173
3,4-Dichlorobenzaldehyde
DICHLORPHENAMIDE