3-(3-Biphenyl-4-yl-1,2,3,4-tetrahydro-1-naphthyl)-4-hydroxy-2H-1-benzopyran-2-one(56073-07-5)

Product Name
3-(3-Biphenyl-4-yl-1,2,3,4-tetrahydro-1-naphthyl)-4-hydroxy-2H-1-benzopyran-2-one

Synonyms
2-Hydroxy-3-[3-(4-phenylphenyl)-1,2,3,4-tetrahydronaphthalen-1-yl]chromen-4-one
3-(3-Biphenyl-4-yl-1,2,3,4-tetrahydro-1-naphthyl)-4-hydroxycoumarin
Diphenacoum

CAS
56073-07-5

Formula
C31H24O3

Molecular Weight
444.55

EINECS
259-978-4

RTECS
GN4934500

RTECS Class
Agricultural Chemical and Pesticide

Beilstein/Gmelin
8360065

Beilstein Reference
-

EC Index Number
607-157-00-X

Appearance
Off-white, odorless, tasteless powder.

Solubility in water
84 mg/L (20 C)

Boiling Point
648

Vapor Pressure
1.1E-17 (25 C)

pKa/pKb
4.50 (pKa)

Heat Of Vaporization
100.4 kJ/mol

Usage
Difenacoum is used to control rats and mice resistant to other anticoagulants with varying degrees of activity. Not registered for use in the us.

Ingestion
Seek medical assistance.

Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes.

Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush with running water for at least 20 minutes. Wash skin with soap and water.

Eyes
In case of contact with substance, immediately flush with running water for at least 20 minutes.

Storage
Technical difenacoum and formulations should be stored in sealed containers in locked, well-ventilated, dry areas away from frost, direct sunlight, and sources of heat and ignition. Keep products out of reach of children and unauthorized personnel. Do not store near food or animal feed.

Ingestion
See inhalation.

Inhalation
May be fatal. May cause irritatior or burns. Vapors may cause dizziness or suffocation.

Skin
See inhalation.

Eyes
See inhalation.

Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion and poison hazard indoors, outdoors or in sewers.

UN (DOT)
3024

Personal Protection
Wear appropriate protective gloves, clothing and goggles.

Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).

Poison Class
1

Flash Point
258

Fire Fighting
Use of water spray when fighting fire may be inefficient. Small Fires: Dry chemical, CO2, water spray or alcohol-resistant foam. Large Fires: Water spray, fog or alcohol-resistant foam.

Fire Potential
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.

Small spills/leaks
Make no contact with the spilled material. Fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire. ELIMINATE all ignition sources and ground all equipment. Stop leak if you can do it without risk. A vapor suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean non-sparking tools to collect absorbed material.

Stability
Stable to light, and to temps up to 100 deg C

Decomposition
High-temperature decomposition or burning in air will lead to the formation of toxic gases, which may include carbon monoxide as well as fumes of unchanged rodenticide.

Combustion Products
Fire will produce irritating, corrosive and/or toxic gases.

UN Number
3024

Hazard Class
6.1