DIFETHIALONE Property

Melting point:

203-227°

Boiling point:

658.3±55.0 °C(Predicted)

Density 

1.3614 g/cm3(Temp: 25 °C)

solubility 

Chloroform: slightly soluble; Methanol: slightly soluble

form 

A solid

pka

4.50±1.00(Predicted)

EPA Substance Registry System

Difethialone (104653-34-1)

Safety

RIDADR 

UN2588 (Pesticide, solid, poi- sonous, n.o.s.); UN2902 (Pesticide, liquid, poisonous, n.o.s.)

HS Code 

29349990

Hazardous Substances Data

104653-34-1(Hazardous Substances Data)

Toxicity

LD50 orally in male, female rats, mice (mg/kg): 0.62, 0.42, 0.52, 0.43 (non-resistant); 0.27, 0.39, 0.46, 0.52 (warfarin resistant); LD50 in hare: 0.75 mg/kg; LC50 in mallard duck, bobwhite quail (ppm): 1.94, 0.56; LD50 at 48 hrs in daphnia magna, bluegill sunfish, rainbow trout (mg/l): 4.4, 110, 67 (Lechevin)

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H300Fatal if swallowed

H310Fatal in contact with skin

H330Fatal if inhaled

H372Causes damage to organs through prolonged or repeated exposure

H410Very toxic to aquatic life with long lasting effects

Precautionary statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.

P262Do not get in eyes, on skin, or on clothing.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P284Wear respiratory protection.

P301+P310IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.

P302+P350IF ON SKIN: Gently wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P310Immediately call a POISON CENTER or doctor/physician.

P314Get medical advice/attention if you feel unwell.

P320Specific treatment is urgent (see … on this label).

P321Specific treatment (see … on this label).

P322Specific measures (see …on this label).

P330Rinse mouth.

P361Remove/Take off immediately all contaminated clothing.

P363Wash contaminated clothing before reuse.

P391Collect spillage. Hazardous to the aquatic environment

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

DIFETHIALONE Chemical Properties,Usage,Production

Description

Difethialone[104653-34-1], 3-[(1RS,3RS; 1RS,3SR)-3- (4 -bromobiphenyl-4-yl)-1,2,3,4-tetrahydro-1-naphthyl]- 4-hydroxy-1-benzothiin-2-one, C31H23BrO2S, MW 539.5, mp 233–236 ?C, is a slightly yellowish powder which is practically insoluble in water, moderately soluble in ethanol, methanol, hexane, acetone, readily soluble in chloroform, dimethylformamide [9, p. 393].

Uses

Difethialone is an anticoagulant rodenticide widely used to control rodent infestations.

Uses

Pesticide.

Preparation

Difethialone is made by condensation of 4-hydroxy-2H- 1-benzothiapyran-2-one with 3-(4 -bromo-4-biphenyl)-1,2, 3,4-tetrahydro-1-naphthol in acetic acid containing concentrated sulfuric acid (62).

Definition

ChEBI: Difethialone is a member of benzenes, a member of naphthalenes and a ring assembly.

Agricultural Uses

Rodenticide, Pesticide: Introduced in 1986, this second-generation anticoagulant rodenticide (member of the hydroxy-4-benzothiopyranone family) is used to control mice and rats, including those resistant to first-generation anticoagulants. Not approved for use in most EU countries. Approved for use in the U.S.

Trade name

LM-2219®; PROTECTA RAT BAIT STATION®; VETERAN PELLET®; VETERAN WAX BLOCK®