1,2-Dichlorobenzene
- CAS No.
- 95-50-1
- Chemical Name:
- 1,2-Dichlorobenzene
- Synonyms
- O-DICHLOROBENZENE;ODCB;ORTHODICHLOROBENZENE;Chloroben;o-Dichlorbenzene;2-dichlorobenzene;1,2-Dichlorbenzene;Dichlorobenzene, o-;Dizene;Cloroben
- CBNumber:
- CB9406935
- Molecular Formula:
- C6H4Cl2
- Molecular Weight:
- 147
- MOL File:
- 95-50-1.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/3/14 15:18:31
| Melting point | -15 °C |
|---|---|
| Boiling point | 179 °C |
| Density | 1.306 g/mL at 25 °C(lit.) |
| vapor density | 5.1 (vs air) |
| vapor pressure | 1.2 mm Hg ( 20 °C) |
| refractive index |
n |
| Flash point | 150 °F |
| storage temp. | Store below +30°C. |
| solubility | 0.13g/l |
| form | Liquid |
| color | Clear colorless to very slightly yellow |
| Odor | Aromatic; characteristic aromatic. |
| explosive limit | 2.2-12%(V) |
| Water Solubility | 0.13 g/L (20 ºC) |
| λmax |
λ: 296 nm Amax: 1.00 λ: 300 nm Amax: 0.30 λ: 305 nm Amax: 0.20 λ: 335 nm Amax: 0.05 λ: 375-400 nm Amax: 0.01 |
| Merck | 14,3056 |
| BRN | 606078 |
| Henry's Law Constant | 1.92 at 25 °C (gas stripping-GC, Shiu and Mackay, 1997) |
| Exposure limits | Ceiling 50 ppm (～300 mg/m3) (MSHA, OSHA, and NIOSH); IDLH 1700 ppm (NIOSH). |
| Dielectric constant | 7.5（20℃） |
| Stability | Stable, but possibly light sensitive. Combustible. Incompatible with oxidizing agents, aluminium, aluminium alloys. Attacks some rubbers and plastics. |
| LogP | 3.433 at 25℃ |
| CAS DataBase Reference | 95-50-1(CAS DataBase Reference) |
| IARC | 3 (Vol. Sup 7, 73) 1999 |
| NIST Chemistry Reference | Benzene, 1,2-dichloro-(95-50-1) |
| EPA Substance Registry System | o-Dichlorobenzene (95-50-1) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS02,GHS07,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H225-H319-H336-H411 | |||||||||
| Precautionary statements | P210-P233-P240-P241-P273-P305+P351+P338 | |||||||||
| Hazard Codes | Xn,N,Xi,F,T | |||||||||
| Risk Statements | 22-36/37/38-50/53-67-66-52/53-36-11-39/23/24/25-23/24/25-51/53 | |||||||||
| Safety Statements | 9-16-26-60-61-23-45-36/37-7 | |||||||||
| OEL | Ceiling: 50 ppm (300 mg/m3) | |||||||||
| RIDADR | UN 1993 3/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | CZ4500000 | |||||||||
| Autoignition Temperature | 640 °C | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 6.1 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29036100 | |||||||||
| Toxicity | LD50 orally in Rabbit: 500 mg/kg LD50 dermal Rabbit > 10000 mg/kg | |||||||||
| IDLA | 200 ppm | |||||||||
| NFPA 704 |
|
1,2-Dichlorobenzene price More Price(41)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | D56802 | 1,2-Dichlorobenzene ReagentPlus?, 99% | 95-50-1 | 1L | ₹3281.05 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | D56802 | 1,2-Dichlorobenzene ReagentPlus?, 99% | 95-50-1 | 100ML | ₹5443.8 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | D56802 | 1,2-Dichlorobenzene ReagentPlus?, 99% | 95-50-1 | 2.5L | ₹7448.3 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | PHR3492 | 1,2-Dichlorobenzene Pharmaceutical Secondary Standard; Certified Reference Material | 95-50-1 | 1ML | ₹15097.05 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | D56802 | 1,2-Dichlorobenzene ReagentPlus?, 99% | 95-50-1 | 25L | ₹27630.45 | 2022-06-14 | Buy |
1,2-Dichlorobenzene Chemical Properties,Uses,Production
Chemical Properties
1,2-Dichlorobenzene (DCB, o-Dichlorobenzene, ODB, Orthodichlorobenzene), C6H4Cl2, is a colorless to pale yellow liquid with a pleasant aromatic odor. It is a combustible liquid and can form explosive mixtures with air at or above 151°F. Combustion and thermal decomposition products include hydrogen chloride gas, phosgene and chloro-carbons. Its flammable (explosive) limits are as follows: Lower 2.2%, Upper 9.2%.
Physical properties
Clear, colorless to pale yellow liquid with a pleasant, aromatic, grassy or vegetable-type odor. At 40 °C, the lowest concentration at which an odor was detected was 200 μg/L. At 25 °C, the lowest concentration at which a taste was detected was 200 μg/L (Young et al., 1996). A detection odor threshold concentration of 4.2 mg/m3 (699 ppbv) was reported by Punter (1983).
Uses
1,2-Dichlorobenzene is used as a solvent; asa fumigant; as an insecticide for termites;as a degreasing agent for metals, wool, andleather; and as a heat transfer medium.
Production Methods
1,2-Dichlorobenzene is produced by reacting liquid benzene with gaseous chlorine in the presence of a catalyst at moderate temperature and atmospheric pressure.
Dichlorobenzenes are primarily produced by the chlorination of benzene in the presence of a catalyst (FeCl3 or AlCl3) although there are other possible synthetic routes. The two commercially important isomers are the ortho- and para-dichlorobenzenes.
Definition
ChEBI: 1,2-dichlorobenzene is a dichlorobenzene carrying chloro substituents at positions 1 and 2. It has a role as a hepatotoxic agent and a metabolite.
General Description
A clear colorless liquid with a pleasant odor. Denser than water and insoluble in water. Flash point 150°F. Toxic by inhalation and ingestion. Used to make other chemicals, solvents, fumigants and insecticides and for many other uses.
Air & Water Reactions
Insoluble in water.
Reactivity Profile
1,2-Dichlorobenzene is sensitive to prolonged exposure to light. 1,2-Dichlorobenzene can react vigorously with oxidizers. 1,2-Dichlorobenzene is incompatible with aluminum and aluminum alloys. 1,2-Dichlorobenzene attacks some forms of plastics, rubber and coatings. .
Health Hazard
1,2-Dichlorobenzene exhibits low acute toxi city by inhalation, ingestion, and skin absorp tion. It is more toxic than chlorobenzene.The symptoms are lacrimation, depression ofcentral nervous system, anesthesia, and liverdamage. Lethal concentration in rats for a7-hour exposure period is in the range of800 ppm. The oral LD50 value in rabbits is500 mg/kg. There is no evidence of carcino genicity in animals.
Fire Hazard
Special Hazards of Combustion Products: Poisonous vapors including hydrogen chloride gas, chlorocarbons, chlorine
Chemical Reactivity
Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
Safety Profile
Poison by ingestion and intravenous routes. Moderately toxic by inhalation and intraperitoneal routes. An experimental teratogen. Other experimental reproductive effects. An eye, skin, and mucous membrane irritant. Causes liver and hdney injury. Questionable carcinogen. Mutation data reported. A pesticide. Flammable when exposed to heat or flame. Can react vigorously with oxidizing materials. To fight fire, use water, foam, CO2, or dry chemical. Slow reaction with aluminum may lead to explosion during storage in a sealed aluminum container. When heated to decomposition it emits toxic fumes of Cl-. See also CHLOROBENZENE and CHLORINATED HYDROCARBONS, AROMATIC.
Potential Exposure
The major uses of o-DCB are as a process solvent in the manufacturing of toluene diisocyanate and as an intermediate in the synthesis of dyestuffs, herbicides, and degreasers. p-Dichlorbenzene is used primarily as a moth repellant, a mildew control agent; space deodorant; and in insecticides, which accounts for 90% of the total production of this isomer. Information is not available concerning the production and use of m-DCB. However, it may occur as a contaminant of o-or p-DCB formulations. Both o-and p-isomers are produced almost entirely as by-products during the production of monochlorobenzene
Purification Methods
Contaminants may include the p-isomer and trichlorobenzene [Suslick et al. J Am Chem Soc 106 4522 1984]. It should be shaken with conc or fuming H2SO4, washed with water, dried with CaCl2, and distilled from CaH2 or sodium in a glass-packed column. Low conductivity material (ca 10-10 mhos) has been obtained by refluxing with P2O5, fractionally distilling and passing it through a column packed with silica gel or activated alumina: it is stored in a dry-box under N2 or with activated alumina. [Beilstein 5 IV 654.]
Incompatibilities
1,2-Dichlorobenzene forms hydrogen chloride gas when in the presence of strong oxidizers or chemically active metals like aluminum, or when heated to decomposition (HSDB 2007).
Waste Disposal
Incineration, preferably after mixing with another combustible fuel. Care must be exercised to assure complete combustion to prevent the formation of phosgene. An acid scrubber is necessary to remove the halo acids produced. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal
1,2-Dichlorobenzene Preparation Products And Raw materials
Raw materials
Preparation Products
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