o-DICHLOROBENZENE

PRODUCT IDENTIFICATION

CAS NO. 95-50-1

o-DICHLOROBENZENE

EINECS NO. 202-425-9
FORMULA C6H4Cl2
MOL WT. 147.00
HS CODE 2903.61

TOXICITY

Oral rat LD50: 500 mg/kg
SYNONYMS 1,2-Dichlorobenzene; o-Dichlorobenzol; ODCB; Chloroden;
1,2-Dichloorbenzeen (Dutch); 1,2-Dichlor-benzol (German); 1,2-Diclorobenzene (Italian); o-Phenylenedichloride; Dilantin DB; Dowtherm E; Dizene; DCB;

SMILES

 

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

Colorless to yellowish liquid with Aromatic odor.

MELTING POINT -17.6 C
BOILING POINT

180 C

SPECIFIC GRAVITY

1.30

SOLUBILITY IN WATER

Insoluble

SOLVENT SOLUBILITY

soluble in alcohol,benzene,diethyl ether

pH neutral
VAPOR DENSITY 5.1

AUTOIGNITION

640 C

NFPA RATINGS

Health: 2; Flammability: 2; Reactivity: 0

REFRACTIVE INDEX

1.5510

FLASH POINT 66 C
STABILITY Stable under ordinary conditions
GENERAL DESCRIPTION & APPLICATIONS
Dichlorobenzenes belong to the group of organic halogen compounds replacing two hydrogen atoms in benzene by chlorine atoms. There are three isomers; ortho-dichlorobenzene, colorless liquid boiling at 180 C, used as a solvent and chemical intermediate for dyes, pigment, agrochemicals and wide range of organic synthesis ; meta- , colorless liquid boiling at 172 C, used as a solvent and chemical intermediate; para- , white solid with a with a characteristic penetrating odor. It is used mainly as an insecticidal fumigant against moths, as a space deodorizer, as a general insecticide and fungicide on crops, and as a chemical intermediate for plastics, dyes, pharmaceuticals and other organic compounds. All they are insoluble in water and denser than water. They are prepared by the chlorination reaction of benzene in the presence of iron(III) chloride. (the chlorination under strong illumination and without iron(III) chloride leads to benzene hexachloride instead of mono or polychlorobenzenes). The chlorination reaction leads to similar ratio of ortho- and para-dichlorobenzene, but small amount of the meta isomer is performed. The ortho and para isomers are separated by fractional freezing. While the para isomer crystallizes, the ortho isomer remains liquid. The meta-dichlorobenzene is prepared by heating and pressure with aluminum chloride. o-Dichlorobenzene is used as a solvent and as a degreasing agent. It is used in removing sulfur from illuminating gas. It is an insecticide and a fumigant. It is also used as a heat-transfer medium in extractive distillation process and solvent carrier in toluene diisocyanate manufacturing. It is also an chemical intermediate to manufacture dyes, agrochemicals, pharmaceuticals and other organic synthesis. It is used as an industrial odor controler, as a preservative for wood. Its application include formulations for motor oil additives, lubricants and paints.
SALES SPECIFICATION

APPEARANCE

Colorless to yellowish liquid with Aromatic odor.

PURITY

99.0% min

ISOMER IMPURITY 1.0% max
ORGANIC IMPURITY

0.5% max

MOISTURE

0.5% MAX

BOILING POINT

171 - 181 C

SET POINT

-16 - -14 C

TRANSPORTATION
PACKING 250kgs in Drum , Iso-Tank
HAZARD CLASS 6.1 (Packing group :III)
UN NO. 1591
GENERAL DESCRIPTION OF CHLOROBENENES
Chlorobenzenes are organic halogen compounds of cyclic aromatics formed by replacing hydrogen atoms in benzene by 1-6 atoms of chlorine. There are 12 compounds of chlorobenzenes of mono-, three isomeric substances each of di-, tri-, and tetra-, as well as penta- and hexachlorobenzene.
  • Monochlorobenzene ( MCB, CAS RN: 108-90-7)
  • 1,2-Dichlorobenzene (1,2-DCB, CAS RN: 95-50-1)
  • 1,3-Dichlorobenzene ( 1,3-DCB, CAS RN: 541-73-1)
  • 1,4-Dichlorobenzene (1,4-DCB, CAS RN: 106-46-7)
  • 1,2,3-Trichlorobenzene (1,2,3-TCB, CAS RN: 87-61-6)
  • 1,2,4-Trichlorobenzene  (1,2,4-TCB, CAS RN: 120-82-1)
  • 1,3,5-Trichlorobenzene (1,3,5-TCB, CAS RN: 108-70-3)
  • 1,2,3,4-Tetrachlorobenzene (1,2,3,4-TeCB, CAS RN: 634-66-2)
  • 1,2,3,5-Tetrachlorobenzene (1,2,3,5-TeCB, CAS RN: 634-90-2)
  • 1,2,4,5-Tetrachlorobenzene (1,2,4,5-TeCB, CAS RN: 95-94-3)
  • Pentachlorobenzene (PeCB, CAS RN: 608-93-5)
  • Hexachlorobenzene (HCB, CAS RN: 118-74-1)

Chlorobenzenes are white crystalline solids at room temperature while MCB, 1,2-DCB, 1,3-DCB, and 1,2,4-TCB, are clear liquids. They are practically insoluble in water and denser than water. . The water solubility is decreasing if more chlorinated. The flammability of chlorobenzenes are low, the octanol/water partition coefficients are moderate to high, increasing with more chlorinated, and vapour pressures are low to moderate, decreasing with more chlorinated. The taste and odour thresholds are low, decreasing with lower chlorinated. MCB (which makes up more than 50 % of total production of all chlorobenzenes) and DCBs (more than 40 %) are prepared by the chlorination reaction of benzene in the liquid phase in the presence of iron(III) chloride. (the chlorination under strong illumination and without iron(III) chloride leads to benzene hexachloride instead of mono or polychlorobenzenes). The chlorination reaction for DCB leads to similar ratio of ortho- and para-dichlorobenzene, but small amount of the meta isomer is performed. The ortho and para isomers are separated by fractional freezing. While the para isomer crystallizes, the ortho isomer remains liquid. The meta-dichlorobenzene is prepared by heating and pressure with aluminum chloride. TCBs are obtained from the chlorination of appropriate chlorobenzene isomers in the presence of a Lewis acid catalyst. TeCBs are achieved by the addition of chlorine to trichlorobenzenes in the presence of an aluminium catalyst.  PCB is produced by the denitrification of pentachloronitrobenzene and the reductive dechlorination of HCB as well as by the addition of chlorine to TeCB. HCB is produced by the direct chlorination of benzene with ferric chloride catalyst at 150-200 C from the distillation of residues from the production of tetrachloroethylene. Chlorobenzenes are used mainly as process solvents and solvent carriers as well as parent compounds in the synthesis of pesticides (mainly), plastics, dyes, pharmaceuticals and other organic compounds. They are used as insecticidal fumigants against moths, as space deodorizers, as general insecticides and fungicides on crops. They are used in metal treatments; in industrial deodorants; in cleaners for drains. Higher chlorinated benzenes of TCBs, TeCBs are used in dielectric fluids.

MONOCHLOROBENZENE

CAS NUMBER : 108-90-7

EINECS NUMBER : 203-628-5

OTHER NAME(S):
Benzene chloride; Benzene monochloride; Chloorbenzeen (Dutch); Chlorbenzol; Chlorobenzen (Polish); Chlorobenzenu; Clorobenzene (Italian); Mcb; Monochloorbenzeen (Dutch); Monochlorbenzol (German); Monoclorobenzene (Italian); Phenyl Chloride;

MAJOR USES

Intermediate for the synthesis of phenol, aniline, chloronitrobenzenes, diphenyl oxide, DDT, and silicones; Process solvent for methylene diisocyanate, adhesives, polishes, waxes, pharmaceutical products, and natural rubber; Degrading solvent; Functional fluid in external combustion; Heat transfer fluids in solar energy collectors

ADDITIONAL INFORMATIO
Oral rat LD50: 1110 mg/kg 
UN Number: 1134 (Hazard Class: 3, Packing Group: III)
Packing: 220kgs in drum

C6H5Cl (112.56)
MONOCHLOROBENZENE 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE clear liquid
MELTING POINT -46 C
BOILING POINT 132 C
SPECIFIC GRAVITY 1.107
SOLUBILITY Insoluble in water
VAPOR DENSITY 3.9

AUTOIGNITION

634 C

REFRACTIVE INDEX

1.524
FLASH POINT 29.5 C

SALES SPECIFICATION

PURITY

99.5% min

DICHLOROBENZENE

0.15% max

BENZENE

0.05% max

ACIDITY

0.001% max

MOISTURE

0.5% max

 

1,2-DICHLOROBENZENE

CAS NUMBER : 95-50-1

EINECS NUMBER : 202-425-9

OTHER NAME(S):
o-Dichloro-Benzene; 2-dichlorobenzene; Chloroben; Cloroben; DCB; o-Dichlor benzol; o-Dichlorbenzene; ODB; Orthodichlorobenzene; Termitkil ;

MAJOR USES

Intermediate for the synthesis of dyes agrochemicals, pharmaceuticals, 3,4-dichloroaniline and other organic synthesis; solvent for organic materials and for oxides of non-ferrous metals; solvent carrier in the production of toluene diisocyanate; fumigant and insecticide; degreasing hides and wool; metal polishes; industrial odor controler; in cleaners for drains; preservative for wood. formulations for motor oil additives, lubricants and paints.

ADDITIONAL INFORMATIO
Oral rat LD50: 500 mg/kg 
UN Number:
1591 (Hazard Class: 6.1, Packing Group: III)
Packing: 250kgs in drum

C6H4Cl2 (147.00)
1,2-DICHLOROBENZENE 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

Clear liquid

MELTING POINT -17.6 C
BOILING POINT

180 C

SPECIFIC GRAVITY

1.30 - 1.31

SOLUBILITY Insoluble in water
VAPOR DENSITY 5.1

AUTOIGNITION

640 C

REFRACTIVE INDEX

1.5510

FLASH POINT 66 C

SALES SPECIFICATION

PURITY

99.0% min

ISOMER IMPURITY 1.0% max
ORGANIC IMPURITY

0.5% max

MOISTURE

0.5% max

 

1,3-DICHLOROBENZENE

CAS NUMBER : 541-73-1

EINECS NUMBER : 208-792-1

OTHER NAME(S):
m-dichloro-Benzene; m-DCB; m-Dichlorobenzene; m-Phenylenedichloride; Meta-Dichlorobenzene;

MAJOR USES

fumigant and insecticide; solvent; chemical intermediate to manufacture dyes, agrochemicals, pharmaceuticals and other organic synthesis.

ADDITIONAL INFORMATIO
Oral rat LD50: 500 mg/kg 
UN Number: 2810 (Hazard Class: 6.1, Packing Group: III)
Packing: 250kgs in drum

C6H4Cl2 (147.00)
1,3-DICHLOROBENZENE 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

Clear liquid

MELTING POINT -24 C
BOILING POINT

172 - 174 C

SPECIFIC GRAVITY

1.30

SOLUBILITY Insoluble in water
VAPOR DENSITY 5.07

AUTOIGNITION

REFRACTIVE INDEX

1.546
FLASH POINT

67 C

SALES SPECIFICATION

PURITY

99.0% min

ISOMER IMPURITY 1.0% max
ORGANIC IMPURITY

0.5% max

MOISTURE

0.5% max

 

1,4-DICHLOROBENZENE

CAS NUMBER : 106-46-7

EINECS NUMBER : 203-400-5

OTHER NAME(S):
p-dichloro-benzene; 1,4-DCB; 1,4-Dichloorbenzeen (Dutch); 1,4-Dichlor-benzol (German); 1,4-Diclorobenzene (Italian); 4-dichlorobenzene; p-Chlorophenyl chloride; p-Dichloorbenzeen (Dutch); p-Dichlorbenzol (German); p-Dichlorobenzene; p-Dichlorobenzol; p-Diclorobenzene (Italian); para-Chlorophenyl chloride; para-Dichlorobenzene; Paracide; Paradichlorbenzol; Paradichlorobenzene; Paradichlorobenzol; PARAZENE; PDB; PDCB; PERSIA-PERAZOL; Santochlor;

MAJOR USES

general insecticide, moth repellent, germicide, deodorant; chemical intermediate to manufacture dyes, agrochemicals, pharmaceuticals, 2,5-dichloroaniline, plastics (e.g polyphenylene sulfide resins used for surface coatings and molding resins), and other organic synthesis.

ADDITIONAL INFORMATIO
Oral rat LD50: 500 mg/kg 
UN Number: 3335 (Hazard Class: 9)
Packing: 250kgs in drum

C6H4Cl2 (147.00)
1,4-DICHLOROBENZENE 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE white crystalline powder
MELTING POINT 53 C
BOILING POINT

174 C

SPECIFIC GRAVITY

1.241

SOLUBILITY Insoluble in water
VAPOR DENSITY 5.08

AUTOIGNITION

640 C

REFRACTIVE INDEX

FLASH POINT

66 C

SALES SPECIFICATION

PURITY

99.0% min

ISOMER IMPURITY 1.0% max
ORGANIC IMPURITY

0.5% max

MOISTURE

0.5% max

MELTING POINT

52 C min

 

1,2,3-TRICHLOROBENZENE

CAS NUMBER : 87-61-6

EINECS NUMBER : 201-757-1

OTHER NAME(S):
1,2,3-TCB; 1,2,3-TrCB; 1,2,6-Trichlorobenzene; Trichlorobenzene; vic-Trichlorobenzene;

MAJOR USES

chemical intermediate; heat transfer fluid; high boiling solvent; dielectric fluid, insecticide and fungicide; coolant in electrical installation; glass tempering; dye carrier; transformer oils; lubricants.

ADDITIONAL INFORMATIO
Oral rat LD50: 1830 mg/kg 
UN Number: 2811 (Hazard Class: 6.1, Packing Group: III)
Packing: 300kgs in drum
 

C6H3Cl3 (181.45)
1,2,3-TRICHLOROBENZENE 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white flakes

MELTING POINT 52 - 55 C
BOILING POINT 219 - 222 C
SPECIFIC GRAVITY 1.69
SOLUBILITY Insoluble in water
VAPOR DENSITY

AUTOIGNITION

REFRACTIVE INDEX

FLASH POINT

112 C

SALES SPECIFICATION

PURITY

99.0% min

MELTING POINT

52 - 53 C

 

1,2,4-TRICHLOROBENZENE

CAS NUMBER : 120-82-1

EINECS NUMBER : 204-428-0

OTHER NAME(S):
1,2,4-Trichlorobenzol; 1,2,5-Trichlorobenzene; 1,3,4-Trichlorobenzene; Trojchlorobenzen (Polish); Unsym-trichlorobenzene;

MAJOR USES

chemical intermediate; heat transfer fluid; high boiling solvent; dielectric fluid, insecticide and fungicide; coolant in electrical installation; glass tempering; dye carrier; transformer oils; lubricants

ADDITIONAL INFORMATIO
Oral rat LD50: 756 mg/kg 
UN Number: 2321 (Hazard Class: 6.1, Packing Group: III)
Packing: 300kgs in drum 

C6H3Cl3 (181.45)
120-82-1 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

Clear liquid

MELTING POINT 17 C
BOILING POINT 212 C
SPECIFIC GRAVITY 1.46
SOLUBILITY Insoluble in water
VAPOR DENSITY 6.2

AUTOIGNITION

571 C

REFRACTIVE INDEX

1.454
FLASH POINT

110 C

SALES SPECIFICATION

PURITY

98.0% min

MOISTURE

0.5% MAX

 

1,3,5-TRICHLOROBENZENE

CAS NUMBER : 108-70-3

EINECS NUMBER : 203-608-6

OTHER NAME(S):
1,3,5-trichloro-Benzene; 1,3,5-Trichlorobenzene; S-Trichlorobenzene; Sym-trichlorobenzene; Trichloro-1,3,5 benzene;

MAJOR USES

chemical intermediate; heat transfer fluid; high boiling solvent; dielectric fluid; insecticide and fungicide; coolant in electrical installation; glass tempering; dye carrier; transformer oils; lubricants

ADDITIONAL INFORMATIO
Oral rat LD50: 800 mg/kg 
UN Number: 2811 (Hazard Class: 6.1, Packing Group: III)
Packing: 25kgs in bag

C6H3Cl3 (181.45)
1,3,5-TRICHLOROBENZENE 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white flakes

MELTING POINT 63 - 65 C
BOILING POINT 208 C
SPECIFIC GRAVITY

SOLUBILITY Insoluble in water
VAPOR DENSITY

AUTOIGNITION

REFRACTIVE INDEX

FLASH POINT 126 C

SALES SPECIFICATION

PURITY

98.0% min

ISOMER IMPURITY 1.0% max
ORGANIC IMPURITY

0.5% max

MOISTURE

0.5% MAX

 

1,2,3,4-TETRACHLOROBENZENE

CAS NUMBER : 634-66-2

EINECS NUMBER : 211-214-0

OTHER NAME(S):
1,2,3,4-TCB; Tetrachlorobenzene;

MAJOR USES

dielectric fluids; in the synthesis of fungicides and other organic compounds

ADDITIONAL INFORMATIO
Oral rat LD50: 1167 mg/kg 
UN Number: FS0001 (Hazard Class: 173)
Packing: 250kgs in drum

C6H2Cl4 (215.89)
1,2,3,4-TETRACHLOROBENZENE 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white flakes

MELTING POINT 42 - 47 C
BOILING POINT 254 C
SPECIFIC GRAVITY

SOLUBILITY Insoluble in water
VAPOR DENSITY

AUTOIGNITION

REFRACTIVE INDEX

FLASH POINT 112 C

SALES SPECIFICATION

PURITY

98.0% min

ISOMER IMPURITY 1.0% max
ORGANIC IMPURITY

0.5% max

MOISTURE

0.5% MAX

 

1,2,3,5-TETRACHLOROBENZENE

CAS NUMBER : 634-90-2

EINECS NUMBER : 211-217-7

OTHER NAME(S):
1,2,3,5-TCB; Benzene, 1,2,3,5-tetrachloro-; Tetrachloro 1,2,3,5-benzene;

MAJOR USES

Intermediate for herbicides; defoliants

ADDITIONAL INFORMATIO

Oral rat LD50:  
UN Number:
Packing: 250kgs in drum 

C6H2Cl4 (215.89)
1,2,3,5-TETRACHLOROBENZENE 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white flakes

MELTING POINT 54 - 55 C
BOILING POINT 246 C
SPECIFIC GRAVITY

SOLUBILITY Insoluble in water
VAPOR DENSITY

AUTOIGNITION

REFRACTIVE INDEX

FLASH POINT

SALES SPECIFICATION

PURITY

99.0% min

MELTING POINT 51 - 55 C

 

1,2,4,5-TETRACHLOROBENZENE

CAS NUMBER : 95-94-3

EINECS NUMBER : 202-466-2

OTHER NAME(S):
1,2,4,5-TCB; 1,2,4,5-Tetrachlorbenzol; Benzene tetrachloride; s-Tetrachlorobenzene;

MAJOR USES

Intermediate for insecticide, herbicides and defoliants; water-resistant impregnant; dielectric fluids; in packing protection;

ADDITIONAL INFORMATIO
Oral rat LD50: 1500 mg/kg 
UN Number: FS0001 (Hazard Class: 173)
Packing: 250kgs in drum 

C6H2Cl4 (215.89)
1,2,4,5-TETRACHLOROBENZENE 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white flakes

MELTING POINT 138 - 140 C
BOILING POINT 240 C
SPECIFIC GRAVITY 1.734
SOLUBILITY Insoluble in water
VAPOR DENSITY 7.4

AUTOIGNITION

REFRACTIVE INDEX

FLASH POINT 112 C

SALES SPECIFICATION

PURITY

99.0% min

ISOMER IMPURITY 1.0% max
ORGANIC IMPURITY

0.5% max

MOISTURE

0.5% MAX

 

PENTACHLOROBENZENE

CAS NUMBER : 608-93-5

EINECS NUMBER : 210-172-0

OTHER NAME(S):
1,2,3,4,5-PENTACHLOROBENZENE; PCB; QCB;

MAJOR USES

pesticide; chemical intermediate

ADDITIONAL INFORMATIO
Oral rat LD50:  
UN Number:
Packing: 25kgs in bag

C6HCl5 (250.34)
PENTACHLOROBENZENE 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white flakes

MELTING POINT 84 - 87 C
BOILING POINT 275 - 277 C
SPECIFIC GRAVITY 1.61
SOLUBILITY Insoluble in water
VAPOR DENSITY

AUTOIGNITION

REFRACTIVE INDEX

FLASH POINT

SALES SPECIFICATION

PURITY

99.0% min

ISOMER IMPURITY 1.0% max
ORGANIC IMPURITY

0.5% max

MOISTURE

0.5% MAX

 

HEXACHLOROBENZENE

CAS NUMBER : 118-74-1

EINECS NUMBER : 204-273-9

OTHER NAME(S):
Amatin; Anticarie; Esaclorobenzene (Italian); Hexachlorbenzol (German); Pentachlorophenyl chloride; Perchlorobenzene; Phenyl perchloryl; Saatbeizfungizid (German); Sanocid; Sanocide;

MAJOR USES

seed dressing; fungicide treating seed; in the manufacture of pyrotechnics, tracer bullets; fluxing agent in the manufacture of aluminum. wood-preserving agent; porosity-control agent in the manufacture of graphite anodes; peptizing agent in the production of nitroso and styrene rubber for tyres;

ADDITIONAL INFORMATIO
Oral rat LD50: 3500 mg/kg 
UN Number: 2729 (Hazard Class: 6.1, Packing Group: III)
Packing: 25kgs in bag

C6Cl6 (284.78)
HEXACHLOROBENZENE 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE

white flakes

MELTING POINT 227 - 229 C
BOILING POINT 332 C
SPECIFIC GRAVITY 1.57
SOLUBILITY Insoluble in water
VAPOR DENSITY 9.83

AUTOIGNITION

REFRACTIVE INDEX

FLASH POINT 242 C

SALES SPECIFICATION

PURITY

99.0% min

ISOMER IMPURITY 1.0% max
ORGANIC IMPURITY

0.5% max

MOISTURE

0.5% MAX