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1,2-Dichlorobenzene

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Name

1,2-Dichlorobenzene

EINECS 202-425-9
CAS No. 95-50-1 Density 1.297 g/cm3
Solubility 0.13 g/L (20 °C) in water Melting Point -15 °C
Formula C6H4Cl2 Boiling Point 180.479 °C at 760 mmHg
Molecular Weight 147.00 Flash Point 65.556 °C
Transport Information UN 1993 3/PG 2 Appearance colourless liquid
Safety 9-16-26-60-61-23-45-36/37 Risk Codes 22-36/37/38-50/53-67-66-52/53-36-11-39/23/24/25-23/24/25-51/53
Molecular Structure Molecular Structure of 95-50-1 (Benzene,1,2-dichloro-) Hazard Symbols HarmfulXn, DangerousN, IrritantXi, FlammableF, ToxicT
Synonyms

Benzene,o-dichloro- (8CI);Cloroben;Dilatin DB;Dowtherm E;NSC60644;o-Dichlorobenzene;

 

1,2-Dichlorobenzene Consensus Reports

IARC Cancer Review: Group 3 IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 (1987),p. 192.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 (1974),p. 231.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 29 (1982),p. 213.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 (1974),p. 231.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 29 (1982),p. 213.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . Reported in EPA TSCA Inventory. Community Right-To-Know List.

1,2-Dichlorobenzene Standards and Recommendations

OSHA PEL: CL 50 ppm
ACGIH TLV: TWA 25 ppm; STEL 50 ppm; Not Classifiable as a Human Carcinogen
DFG MAK: 50 ppm (300 mg/m3)
DOT Classification:  6.1; Label: KEEP AWAY FROM FOOD

1,2-Dichlorobenzene Analytical Methods

For occupational chemical analysis use NIOSH: Hydrocarbons, Halogenated, 1003.

1,2-Dichlorobenzene Specification

The o-Dichlorobenzene, with the cas registry number 95-50-1, has the systematic name of 1,2-dichlorobenzene. When store, keep it in a dry, well-ventilated storeroom with the temp. of 0-6.

This is a kind of colourless liquid and is insoluble in water while completely soluble in ethanol, ethyl ether and benzene. Besides, it is stable, but possibly light sensitive. And it is incompatible with oxidizing agents, aluminium, aluminium alloys. Its product categories are various, including Intermediates of Dyes and Pigments; Organics; Analytical Chemistry; Standard Solution of Volatile Organic Compounds for Water & Soil Analysis; Standard Solutions (VOC); Amber Glass Bottles; CHROMASOLV for HPLCSolvents; CHROMASOLV Solvents (HPLC, LC-MS); CHROMASOLV(R) HPLC Grade Solvents; Solvent Bottles; Carbon Steel Cans with NPT Threads; ReagentPlus(R) Solvent Grade Products; ReagentPlus(R)Semi-Bulk Solvents.

The characteristics of this chemical are as followings: (1)ACD/LogP: 3.28; (2)ACD/LogD (pH 5.5): 3.28; (3)ACD/LogD (pH 7.4): 3.28; (4)ACD/BCF (pH 5.5): 184.19; (5)ACD/BCF (pH 7.4): 184.19; (6)ACD/KOC (pH 5.5): 1455.77; (7)ACD/KOC (pH 7.4): 1455.77; (8)Index of Refraction: 1.548; (9)Molar Refractivity: 36.04 cm3; (10)Molar Volume: 113.3 cm3; (11)Polarizability: 14.28 ×10-24 cm3; (12)Surface Tension: 36.7 dyne/cm; (13)Density: 1.297 g/cm3; (14)Flash Point: 65.6 °C; (15)Enthalpy of Vaporization: 39.97 kJ/mol; (16)Boiling Point: 180.5 °C at 760 mmHg; (17)Vapour Pressure: 1.21 mmHg at 25°C; (18)Exact Mass: 145.969006; (19)MonoIsotopic Mass: 145.969006; (20)Heavy Atom Count: 8; (21)Complexity: 62.9.

As to its usage, it it widely applied in many ways. It could be used as the solvent of the following chemical, such as wax, gum, resin, tar, rubber, oils and pitch, and also in  dye, high-class pigment, chlorhexidine, polyurethane, and so on; It could also be used in pesticide for killing termite, acridid, verminal, in producing acetofenate, suffer and in composing catechol, o-phenylenediamine; It could be used as the Rostlockerungsmittel, degreasing agent, epoxy resin diluent; coolant; heat exchange medium, and so on.

Production method of o-Dichlorobenzene: chlorobenzene could react to produce 1,4-dichloro-benzene and o-Dichlorobenzene. The reaction condition is below: reagent:Pb(OCOCH3)4, C6F13COOH, LiCl; reaction time: 14 hours; reaction temp.: 80 ℃; field: 14.9%.

Use of o-Dichlorobenzene: o-Dichlorobenzene could react to produce 1,2-dichloro-4,5-dinitro-benzene. The reaction condition is below: reagent:conc. HNO3, H2SO4, SO3; reaction time: 2 hours; reaction temp.: 100 ℃; field: 46%.

You should be very cautious while dealing with this chemical. For one thing, this chemical is very harmful to our human beings. It is irritant to eyes, respiratory system and skin, and may cause inflammation to the skin or other mucous membranes. Besides, it is toxic, and if by inhalation, in contact with skin and if swallowed, it will have very serious irreversible effects to our health. For anther thing, it is dangerous for the environment. This chemical is harmful to aquatic organisms, and may cause long-term adverse effects in the aquatic environment; Then it may present an immediate or delayed danger to one or more components of the environment. Lastly, it is highly flammable. It may catch fire in contact with air, only needing brief contact with an ignition source, and has a very low flash point or evolve highly flammable gases in contact with water. And repeated exposure may cause skin dryness or cracking, and vapours may cause drowsiness and dizziness.

Due to the information above, you should take the following instructions to protect yourself. Firstly, wear suitable protective clothing and gloves. Do not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer). If in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice; In case of accident or if you feel unwell seek medical advice immediately (show the label where possible). Secondly, be careful while keeping it. Keep container in a well-ventilated place, and keep away from sources of ignition - No smoking. Then This material and its container must be disposed of as hazardous waste. Thirdly, Avoid releasing to the environment and refer to special instructions/safety data sheet. 

Addtionally, the following datas could be converted inte the molecular structure:
(1)SMILES:Clc1ccccc1Cl
(2)InChI:InChI=1/C6H4Cl2/c7-5-3-1-2-4-6(5)8/h1-4H
(3)InChIKey:RFFLAFLAYFXFSW-UHFFFAOYAE

 

 

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