205056-05-9

Basic information

• Product Name: (1S,2S,3S,4S,5S,6S)-2,3,5,6-tetrachloro-1,7-bis(chloromethyl)-7-(dichloromethyl)bicyclo[2.2.1]heptane
• CAS NO: 205056-05-9
• Molecular Formula: C₁₀H₁₀Cl₈
• Molecular Weight: 413.81
• Mol File: 205056-05-9.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 479.5°C at 760 mmHg
• Flash Point: 249.2°C
• Density: 1.63g/cm³
• Vapor Pressure: 6.84E-09mmHg at 25°C
• Refractive Index: 1.568
• CAS DataBase Reference: (1S,2S,3S,4S,5S,6S)-2,3,5,6-tetrachloro-1,7-bis(chloromethyl)-7-(dichloromethyl)bicyclo[2.2.1]heptane(CAS DataBase Reference)
• NIST Chemistry Reference: (1S,2S,3S,4S,5S,6S)-2,3,5,6-tetrachloro-1,7-bis(chloromethyl)-7-(dichloromethyl)bicyclo[2.2.1]heptane(205056-05-9)
• EPA Substance Registry System: (1S,2S,3S,4S,5S,6S)-2,3,5,6-tetrachloro-1,7-bis(chloromethyl)-7-(dichloromethyl)bicyclo[2.2.1]heptane(205056-05-9)

Safety Data

• Hazardous Substances Data: 205056-05-9(Hazardous Substances Data)

Relevant articles and documents

Synthesis of two major toxaphene components and their photostabilities

The synthesis of 2-endo,3-exo,5-endo,6-exo,8,9,10-heptachlorobornane (B7-1001, Hp-Sed) and 2-endo,3-exo,5-endo,6-exo,8,9,9,10-octachlorobornane (B8-1412) is described. Both compounds are components of toxaphene, an insecticide that has been widely used in the past. B7-1001 is an important toxaphene congener, comprising up to 99% of total toxaphene concentrations found in fish and sediment samples from treated lakes. B8-1412 is also a significant component of toxaphene contamination in samples from biota. In synthesizing the compounds, 2-exo,3-endo,6-endo,8,9,10-hexachlorobornane (B6-913) was obtained by reduction of the well-known toxaphene component P 32 (B7-515, 2,2,5-endo,6-exo,8,9,10-heptachlorobornane), which was itself isolated from the chlorination products of (+)-camphene. Chlorination of B6-913 provided B7-1001 in 49.5% yield, and P 32 and four other heptachlorobornanes were also detected in the reaction mixture. Structures of two of the heptachlorobornanes were elucidated by MS and NMR as 2-exo,3-endo,6-endo,8,9,9,10-heptachlorobornane (B7-1461) and 2-exo,3,3,6-encto,8,9,10-heptachlorobornane (B7-1303). B8-1412 was isolated from the product mixture obtained by chlorination of 2-exo,3-endo,6-endo,8,9,9,10-heptachlorobornane. Photolysis experiments at λ = 254 nm revealed that B6-913 is photochemicaly the most stable compound of the seven toxaphene compounds studied, with a t1/2 of 213 h. B7-1001, having a t1/2 of 82 h, was the second most stable compound. B8-1412 was degraded more rapidly, with a t1/2 of 28.8 h, than B7-1001, but was still much more stable than P 50 (B9-1679, 2-endo,3-exo,5-endo,6-exo,8,8,9,10,10-nonachlorobornane), which had a t 1/2 of 9.4 h, despite its reputation as a very persistant compound. Under the same experimental conditions hexachlorobenzene (HLB) and octachlorodibenzodioxine (OCDD) were consumed very quickly with t1/2 = 0.0025 and 0.0015 h, respectively.