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1,4-Dichlorobenzene 13C6

ISO 17034:

Chemical Name : 1,4-Dichlorobenzene 13C6
Catalog Number : CS-BE-00073
CAS Number : 201595-59-7
Status :
Category : Stable Isotopes

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Canonical SMILES : C1=CC(=CC=C1Cl)Cl
Isomeric SMILES : C1=CC(=CC=C1Cl)Cl
InChI : InChI=1S/C6H4Cl2/c7-5-1-2-6(8)4-3-5/h1-4H
IUPAC Name : 1,4-dichlorobenzene
Exact Mass : 145.9690055
Color : White crystals
Odor : Distinctive aromatic odor ... becomes very strong at concentrations between 30 and 60 ppm
Melting Point : 127 °F (NTP, 1992)
Boiling Point : 345 °F at 760 mm Hg (NTP, 1992)
Solubility : less than 1 mg/mL at 73° F (NTP, 1992)
Density : 1.458 at 68 °F (USCG, 1999)
Chemical Classes : Pesticides -> Fumigants
Use Classification : Hazardous Air Pollutants (HAPs)
Industry Uses : Intermediates
Consumer Uses : Air care products
Hazard Class : Carc. 2
Description : 1,4-dichlorobenzene is a dichlorobenzene carrying chloro groups at positions 1 and 4. It has a role as an insecticide.
Disposal Methods : Generators of waste (equal to or greater than 100 kg/mo) containing this contaminant, EPA hazardous waste number U072 and D027, must conform with USEPA regulations in storage, transportation, treatment and disposal of waste.
EC Number : 203-400-5
Vapor Pressure : 0.6 mm Hg at 68 °F ; 1.8 mm Hg at 86° F (NTP, 1992)
Toxicity Summary : IDENTIFICATION AND USE: 1,4-Dichlorobenzene (p-DCB) is a solid. It is used as moth repellent, general insecticide, germicide, space odorant, in manufacture of 2,5-dichloroaniline, dyes, intermediates, pharmacy, agriculture (fumigating soil). HUMAN STUDIES: Fumes from the surface of hot p-DCB may irritate skin slightly when contact is repeated or prolonged. Leukoencephalopathy has been described following ingestion of p-DCB mothballs. Hemolytic anemia and methemoglobinemia is more rarely reported in such cases. p-DCB increased the frequency of sister chromatid exchange in human peripheral blood lymphocytes in the absence of metabolic activation. ANIMAL STUDIES: p-DCB induces renal tumors specifically in male rats through an alpha2u-globulin-associated response. p-DCB failed to exhibit genotoxic effects in vivo, exhibiting negative responses in unscheduled DNA synthesis, in the chromosome aberration assay, in the dominant lethal assay, and in the in vivo micronucleus assay. It was reported as positive in one DNA strand breakage assay and in one in vivo micronucleus assay. p-DCB bound to DNA in the liver, lung, and kidney of mice but not in that of male rats. It also induced DNA damage in the liver and spleen but not in the kidney, lung, or bone marrow of mice. p-DCB was not mutagenic in Salmonella typhimurium strains TA 98, TA 100, TA 1535, or TA 1537 with or without metabolic activation. Acute and subchronic neurotoxicity studies have been performed with p-DCB. In rats, acute exposure to p-DCB at the rate of 50, 200 or 600 ppm caused decreased forelimb and hindlimb grip strengths and motor activity in males but not females at the high-dose. p-DCB was not teratogenic in rabbits. ECOTOXICITY STUDIES: Acute and chronic toxicity to freshwater aquatic life occur at concentrations as low as 1,120 and 763 ug/L. Acute toxicity to saltwater aquatic life occurs at concentrations as low as 1,970 ug/L. p-DCB was toxic to cell cultures of the tomato, soybean, and carrot. Concentrations of 0.5 mM caused 50% growth inhibition in carrot and soybean cultures. The tomato cultures were more sensitive, with 0.05 mM causing 50% growth inhibition.
Antidoteand Emergency Treatment : Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Lindane and related compounds/
Human Toxicity Excerpts : /SIGNS AND SYMPTOMS/ ... /58 men working with p-dichlorobenzene continuously or intermittently at concentrations/ from 50-170 ppm with average of 105 ppm ... /complained/ of eye and nose irritation ... ; /at/ 15-85 ppm with average of 45 ppm ... there were no complaints.