53469-21-9

Basic information

• Product Name: AROCLOR 1242, 1X1ML, ISO, 1UG/ML
• Synonyms: [40cfr136(1986)]pcb-1242;chloriertebiphenyle,chlorgehalt42%;chlorodiphenyl(42%chlorine);chlorodiphenyl(42%cl);clorodifenili,cloro42%;diphenylechlore,42%dechlore;gechloreerdedifenyl;polychlorinatedbiphenyl(aroclor1242)
• CAS NO: 53469-21-9
• Molecular Formula: C12H6Cl4
• Molecular Weight: 291.98804
• Product Categories: AR to AZEnvironmental Standards;Aroclors, PCBs, and Dioxins;AroclorsMethod Specific;2000/60/EC;A;Alphabetic;European Community: ISO and DIN;8000 Series Solidwaste Methods;AroclorsEPA;CLP Standards;Method 8082EPA;OLM04 Statement of WorkEnvironmental Standards;Separate Source Standards;Single Component Solutions;AroclorsEnvironmental Standards;Volatiles/ Semivolatiles;Environmental Standards
• Mol File: 53469-21-9.mol
• Article Data: 0

Chemical Properties

• Boiling Point: 347.7°C at 760 mmHg
• Flash Point: -12 °C
• Appearance: /
• Density: 1.441g/cm³
• Vapor Pressure: 0.000106mmHg at 25°C
• Refractive Index: 1.612
• Storage Temp.: room temp
• Solubility: (wt %):Benzoic acid (10.0 at 31 °C), pyridine (132.5 at 30 °C), diglycol monoethyl ether (224 at 31 °C), methanol (42.5 at 29 °C), ethanol (23.3 at 29 °C) (Monsanto, 1960)
• Water Solubility: 277ug/L(20 oC)
• CAS DataBase Reference: AROCLOR 1242, 1X1ML, ISO, 1UG/ML(CAS DataBase Reference)
• NIST Chemistry Reference: AROCLOR 1242, 1X1ML, ISO, 1UG/ML(53469-21-9)
• EPA Substance Registry System: AROCLOR 1242, 1X1ML, ISO, 1UG/ML(53469-21-9)

Safety Data

• Hazard Codes: F,Xn,N,Xi,T
• Statements: 11-38-50/53-65-67-33-36/37/38-22-62-51/53-48/20-39/23/24/25-23/24/25-52/53-45
• Safety Statements: 9-16-29-33-60-61-62-35-36-26-36/37-45-53
• RIDADR: 2315
• WGK Germany: 3
• RTECS: TQ1356000
• HazardClass: 9
• PackingGroup: II
• Hazardous Substances Data: 53469-21-9(Hazardous Substances Data)

Usage

Description

AROCLOR 1242, 1X1ML, ISO, 1UG/ML is a colorless to light yellow, viscous, oily, dense, nonflammable liquid with a weak, hydrocarbon or aromatic-type odor. It is a polychlorinated biphenyl (PCB) mixture with approximately 3.1 chlorine atoms per molecule.

Uses

Used in Electrical Industry:
AROCLOR 1242, 1X1ML, ISO, 1UG/ML is used as a dielectric liquid in capacitors and transformers for its insulating properties and ability to prevent electrical arcing.
Used in Manufacturing Processes:
AROCLOR 1242, 1X1ML, ISO, 1UG/ML is used as a heat exchange fluid and hydraulic fluid in various industrial processes due to its thermal stability and low flammability.
Used in Home Appliances (prior to 1976):
AROCLOR 1242, 1X1ML, ISO, 1UG/ML was used in home appliances such as air conditioners, furnaces, washers, and driers as a heat-transfer liquid.
Used in Automotive Industry (prior to 1976):
AROCLOR 1242, 1X1ML, ISO, 1UG/ML may have been added to automotive transmission oils to swell shrunken transmission seals in place.
Used in Pesticides:
At a concentration of 5 to 25 wt %, AROCLOR 1242, 1X1ML, ISO, 1UG/ML increased the effective kill-life of the lindane spray up to 10 times and may have been used in chlordane and BHC insecticide formulations.
Used in Adhesives:
AROCLOR 1242, 1X1ML, ISO, 1UG/ML is used in polyvinyl acetate emulsions to impart strong bonding power in adhesives.
Used in Lacquers:
AROCLOR 1242, 1X1ML, ISO, 1UG/ML is used in various nitrocellulose lacquers to impart weather resistance, luster, adhesion, and decreased burning rate. These lacquers may also contain tricresyl phosphate.
Note: AROCLOR 1242, 1X1ML, ISO, 1UG/ML is no longer produced in the US due to environmental and health concerns associated with PCBs.

Air & Water Reactions

Insoluble in water.

Health Hazard

Chlorodiphenyl, 42% chlorine (one of over 200 possible chlorinated compounds that comprise polychlorinated biphenyls or PCBs) is an irritant of the eyes and mucous membranes, is toxic to the liver, and causes an acneform dermatitis (chloracne). It is a liver carcinogen in animals.

Fire Hazard

Some may burn but none ignite readily. Containers may explode when heated. Some may be transported hot.

Safety Profile

Suspected human carcinogen. Poison by subcutaneous route. Mildly toxic by ingestion. Human systemic effects by inhalation: pulmonary and liver effects. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits toxic fumes of Cl-. Used in heat transfer, hydraulic fluids, lubricants, and insecticides. See also POLYCHLORINATED BIPHENYLS.

Carcinogenicity

The genotoxicity of PCBs has been tested in in vivo and in vitro studies with generally negative results.

Environmental fate

Biological. A strain of Alcaligenes eutrophus degraded 81% of the congeners by dechlorination under anaerobic conditions (Bedard et al., 1987). A bacterial culture isolated from Hamilton Harbour, Ontario was capable of degrading a commercial mixture of PCB-1242. The metabolites identified by GC/MS included isohexane, isooctane, ethylbenzene, isoheptane, isopropylbenzene, n-propylbenzene, isobutylbenzene, n-butylbenzene, and isononane (Kaiser and Wong, 1974). A strain of Pseudomonas, isolated from activated sludge and grown with biphenyl as the sole carbon source, degraded 2,4′-dichlorobiphenyl yielding the following compounds: two monochlorobenzoic acids, two monohydroxydichlorobiphenyls, and a yellow hydroxyoxo(chlorophenyl) chlorohexadienoic acid. Irradiation of the mixture containing these compounds led to the formation of two monochloroacetophenones and the disappearance of the yellow compound. Similar compounds were found when 2,4′-dichlorobiphenyl was replaced with a PCB-1242 mixture (Baxter and Sutherland, 1984). Soil. In Hudson River, NY sediments, the presence of adsorbed PCB-1242 in core samples suggests it is very persistent in this environment. The estimated half-life ranged from 1.3 to 2.1 yr (Bopp et al., 1982). Photolytic. PCB-1242 in a 90% acetonitrile/water solution containing 0.2 to 0.3 M sodium borohydride and irradiated with UV light (λ = 254 nm) reacted to yield dechlorinated biphenyls. Without sodium borohydride, the reaction proceeded much more slowly (Epling et al., 1988). Chemical/Physical. When PCB-1242-contaminated sand was treated with a poly(ethylene glycol)/potassium hydroxide mixture at room temperature, 27% reacted after 2 wk forming aryl poly(ethylene glycols) (Brunelle and Singleton, 1985).

Solubility in water

(wt %):Benzoic acid (10.0 at 31 °C), pyridine (132.5 at 30 °C), diglycol monoethyl ether (224 at 31 °C), methanol (42.5 at 29 °C), ethanol (23.3 at 29 °C) (Monsanto, 1960)

InChI:InChI=1/C12H6Cl4/c13-7-4-5-8(11(15)6-7)9-2-1-3-10(14)12(9)16/h1-6H