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Endosulfan

Endosulfan structure

CAS No:
115-29-7
Formula:
C9H6Cl6O3S
Chemical Name:
Endosulfan
Synonyms:
6,9-Methano-2,4,3-benzodioxathiepin,6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-,3-oxide;5-Norbornene-2,3-dimethanol,1,4,5,6,7,7-hexachloro-,cyclic sulfite;OMS 570;HOE 2671;BIO 5462;ENT 23979;α,β-1,2,3,4,7,7-Hexachlorobicyclo[2.2.1]-2-heptene-5,6-bisoxymethylene sulfite;6,7,8,9,10,10-Hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepin-3-oxide;1,4,5,6,7,7-Hexachloro-5-norbornene-2,3-dimethanol cyclic sulfite;Niagara 5462;Endosulfan;Thiodan;Malix;SD 4314;6,7,8,9,10,10-Hexachloro-1,5,5α,6,9,9α-hexahydro-6,9-methano-2,4,3-benzodioxathiepin-3-oxide;Endosulfan 35EC;Chlorthiepin;Endosulphan;Beosit;Thimul;Thionex;Benzoepin;Tionex;Thiodan 35EC;Thiodan 35;Thiotox;Thiotox (insecticide);Hildan;Endocel;Tiovel;Endotaf;Phaser;Madhusulphan;Sialan;Parrysulfan;Thioflo;Ethiosulfan;Endodhan;Zebra ciagro;Thionex 35;Akodan 35;Global E 35;Endosulfan 35 Nufarm;Liudan;Endosri;6994-04-3;8003-45-0;426824-51-3
Categories:
Agrochemicals > Insecticides

Description

(commercial product): Brown crystals. Mixture of two isomers. Endosulfan is a pesticide. It is a creamto brown-colored solid that may appear in the form of crystals or fl akes. It has a smell like turpentine, but does not burn. It does not occur naturally in the environment. Endosulfan is used to control insects on food and non-food crops and also as a wood preservative. Endosulfan is used for the control of ticks and mites, and the control of rice stem borers. It is an RUP, meaning it can

Endosulfan Basic Attributes

Molecular Weight：

406.93

Exact Mass：

406.93

EC Number：

204-079-4

HScode：

29209090

Characteristics

PSA：

54.7

XLogP3：

3.55/3.62

Appearance：

Beta - endosulfan appears as brown crystals. Melting point 208-210°C. Used as an insecticide.

Density：

1.745 g/cm³ @ Temp: 20 °C

Melting Point：

106 °C

Boiling Point：

106 °C @ Press: 0.70 Torr

Flash Point：

-26 °C

Refractive Index：

1.675

Water Solubility：

H2O: <0.1 g/100 mL at 23 ºC

Storage Conditions：

APPROX 4°C

Vapor Pressure：

Vapour pressure, Pa at 80°C: 1.2

Toxicity：

LD50 orally in male, female rats: 43, 18 mg/kg (Gaines)

Flammability characteristics：

Heat releases toxic chloride and sulfur oxide gas; decomposes toxic sulfur oxide gas with acid, alkali and moisture

Odor：

Similar to terpene.

PH：

pH 7.2 in tap water

Safety Information

Packing level：

Hazard category：

6.1(a)

Transport codes：

UN 2761

wgk germany：

hazard class code：

24/25-36-50/53-67-65-62-51/53-48/20-38-11-26/28-21

safety instructions：

28-36/37-45-60-61-62-63-33-29-16-9

RTECS Number：

RB9275000

Marks：

T,N,Xn,F,T+

Storage features：

The warehouse is ventilated, low temperature and dry; stored and transported separately from food materials

Stability/Shelf Life：

Endosulfan is stable to sunlight but is susceptible to oxidation and the formation of endosulfan sulfate in the presence of growing vegetation.

Precautionary statement(s)：

P260-P264-P273-P280-P284-P301 + P310

Hazard Statements：

H300 + H310 + H330-H410

Toxicity

Toxicity class：

most toxic

Endosulfan Use and Manufacturing

Methods of Manufacturing

Endosulfan is prepared by heating and reacting hexachlorocyclopentadiene with 1, 4-butenediol, holding it for 10 hours, cooling, filtering, and washing to obtain endosulfan alcohol, then heating endosulfan alcohol and solvent to a certain temperature, and adding chlorinated dropwise Sulfoxide, after dropping, maintain the reaction for 1h, dehydrochlorination under reduced pressure, cooling, crystallization and filtration to obtain endosulfan. See reference [3] for details.

Uses

Insecticide.

Material

Toluene

Sodium hydroxide

Thionyl chloride