74338-23-1 Usage
Description
2,3',5',6-Tetrachlorobiphenyl, also known as PCB 64, is a highly toxic and persistent organic pollutant belonging to the group of polychlorinated biphenyls (PCBs). It is a chlorinated biphenyl compound with four chlorine atoms attached to different carbon atoms in the biphenyl structure. PCB 64 is known for its bioaccumulative properties, leading to its accumulation in the fatty tissues of animals and causing a range of health issues, including neurological and developmental disorders, immune system suppression, and carcinogenic effects.
Uses
(Note: Given the highly toxic nature of 2,3',5',6-Tetrachlorobiphenyl, it is unlikely to have current legitimate uses. However, for the sake of the exercise, we will list its historical uses before the ban.)
Used in Industrial Applications:
2,3',5',6-Tetrachlorobiphenyl was used as a coolant and lubricant in transformers and capacitors for its heat transfer properties and electrical insulating capabilities.
Used in Hydraulic Fluids:
PCB 64 was employed as a component in hydraulic fluids due to its viscosity, stability, and resistance to thermal degradation.
Used in Plasticizers:
2,3',5',6-Tetrachlorobiphenyl was used as a plasticizer in the production of plastics to increase flexibility and workability.
Used in Paints and Inks:
PCB 64 was utilized as a pigment in paints and inks for its color stability and resistance to fading.
Used in Adhesives and Sealants:
2,3',5',6-Tetrachlorobiphenyl was employed as an adhesive and sealant due to its strong bonding properties and resistance to environmental factors.
(Note: The above uses are historical and do not reflect current practices, as the production and use of 2,3',5',6-Tetrachlorobiphenyl have been banned due to its harmful effects on human health and the environment.)
Check Digit Verification of cas no
The CAS Registry Mumber 74338-23-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,3,3 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 74338-23:
(7*7)+(6*4)+(5*3)+(4*3)+(3*8)+(2*2)+(1*3)=131
131 % 10 = 1
So 74338-23-1 is a valid CAS Registry Number.
74338-23-1Relevant articles and documents
Physical, spectral and chromatographic properties of all 209 individual PCB congeners
Bolgar,et al.
, p. 2687 - 2705 (2007/10/03)
Through the use of two capillary GC columns: 40% octadecyl/ 15% phenyl methyl siloxane and 50% phenyl methyl siloxane, it was possible to separate 201 PCB congeners with only four unresolved pairs. The data compiled in this study for all 209 congeners will aid in the identification of selected individual components of these environmental pollutants. The use of this data also presents the opportunity for the improved quantification of the commercial PCB formulations. -from Authors
