Endrin

Endrin is an insecticide that was commonplace among cotton growers and for the treament of cereals. It was also used to kill rodents. It is a neurotoxin. It is a stereoisomer of Dieldrin. In the soil, it can take up to twelve years to decay. It is one of the twelve substances listed in the Stockholm Convention on Persistent Organic Pollutants, and its production, trade and use is banned since 2004.

Endrin

Names
IUPAC name (1R,2S,3R,6S,7R,8S,9S,11R)-3,4,5,6,13,13-Hexachloro-10-oxapentacyclo[6.3.1.13,6.02,7.09,11]tridec-4-ene
Other names Mendrin, Compound 269, (1aR,2S,2aS,3S,6R,6aR,7R,7aS)-3,4,5,6,9,9-hexachloro-1a,2,2a,3,6,6a,7,7a-octahydro-2,7:3,6-dimethanonaphtho[2,3-b]oxirene, 1,2,3,4,10,10-Hexachloro-6,7-epoxy-1,4,4a,5,6,7,8,8a-octahydro-1,4-endo,endo-5,8-dimethanonaphthalene
Identifiers
CAS Number	72-20-8 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:81526
ChEMBL	ChEMBL44072
ChemSpider	21782117 Y
ECHA InfoCard	100.000.705
EC Number	200-775-7
KEGG	C18124 Y
PubChem CID	3048
RTECS number	IO1575000
UNII	OB9NVE7YCL Y
UN number	2761
CompTox Dashboard (EPA)	DTXSID6020561
SMILES C1C2C3C(C1C4C2O4)C5(C(=C(C3(C5(Cl)Cl)Cl)Cl)Cl)Cl
Properties
Chemical formula	C12H8Cl6O
Molar mass	380.907 g/mol
Appearance	Colorless to tan crystalline solid
Density	1.77 g/cm3
Melting point	200 °C (392 °F; 473 K) (decomposes)
Solubility in water	0.23 mg/L
Vapor pressure	2.6 x 10-5 Pa
Hazards
NFPA 704	0 2 0
Flash point	noncombustible
U.S. Permissible exposure limit (PEL)	TWA 0.1 mg/m3 [skin]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references