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56-72-4

Supplier Related Products Identification Chemical Properties Hazard Information Safety Data Raw materials And Preparation Products Material Safety Data Sheet(MSDS) Well-known Reagent Company Product Information

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Identification

Name
Coumaphos
CAS
56-72-4
Synonyms
7-CO-RAL(R)
Asunthol
ASUNTOL
ASUNTOL(R)
BAYER 21199
BAYMIX(R)
COUMAPHOS
MUSCATOX(R)
O,O-DIETHYL-O-[3-CHLORO-4-METHYL-2-OXO-2H-1-BENZOPYRAN-7-YL]-PHOSPHOROTHIOATE
O,O-DIETHYL O-(3-CHLORO-4-METHYL-7-COUMARINYL) PHOSPHOROTHIOATE
PERIZIN
RESITOX(R)
3-Chloro-4-methyl-7-coumarinyl diethyl phosphorothioate
3-chloro-4-methyl-7-coumarinyldiethylphosphorothioate
3-Chloro-4-methyl-7-hydroxycoumarin diethyl thiophosphoric acid ester
3-chloro-4-methyl-7-hydroxycoumarindiethylthiophosphoricacidester
3-Chloro-4-methylumbelliferone o-ester with O,O-diethyl phosphorothioate
3-chloro-4-methylumbelliferoneo-esterwitho,o-diethylphosphorothioate
3-chloro-7-diethoxyphosphinothioyloxy-4-methylcoumarin
3-Chloro-7-hydroxy-4-methyl-coumarin O,O-diethyl phosphorothioate
EINECS(EC#)
200-285-3
Molecular Formula
C14H16ClO5PS
MDL Number
MFCD00041820
Molecular Weight
362.77
MOL File
56-72-4.mol

Chemical Properties

Description
Technical coumaphos is a tan crystalline solid with a slight sulphur odour. It is insoluble in water; slightly soluble in acetone, chloroform, and ethanol; and soluble in organic solvents. Coumaphos when heated undergoes decomposition and releases very toxic fumes of sulphur oxides, phosphorous oxides, and chlorides. It is used for the control of a wide variety of livestock insects, including cattle grubs, screwworms, lice, scabies, flies, and ticks. It is used against ectoparasites, which are insects that live on the outside of host animals such as sheep, goats, horses, pigs, and poultry. Coumaphos is incompatible with alkalis, strong oxidising agents, pyrethroids, and piperonyl butoxide. The U.S. EPA has grouped coumaphos as RUP.
Appearance
Coumaphos is a white to brownish crystalline solid with a slight sulfurous odor
Appearance
tan or beige solid
Fp 
100 °C
storage temp. 
APPROX 4°C
Stability:
Stable. Combustible. Incompatible with alkalies, strong oxidising agents.
Merck 
13,2584
CAS DataBase Reference
56-72-4(CAS DataBase Reference)
NIST Chemistry Reference
Coumaphos(56-72-4)
EPA Substance Registry System
56-72-4(EPA Substance)

Hazard Information

Chemical Properties
coumaphos is a tan crystalline solid with a slight sulfur odor. It is insoluble in water, slightly soluble in acetone, chloroform, and ethanol, and soluble in organic solvents. It is used for the control of a wide variety of livestock insects, including cattle grubs, screwworms, lice, scabies, fl ies, and ticks. It is used against ectoparasites, which are insects that live outside the host animals, such as sheep, goats, horses, pigs, and poultry. Coumaphos is incompatible with pyrethroids and piperonyl butoxide. The US EPA has grouped coumaphos as an RUP. Acute dermal exposures to occupational workers occur during mixing, loading, and application of coumaphos, especially in the livestock dip-vat and hand-held sprayer uses
General Description
Slightly brownish crystals with a slight sulfurous odor. Used for the control of a wide variety of livestock insects including cattle grubs, lice, scabies, flies, and ticks; the common ectoparasites of sheep, goats, horse, swine, and poultry as well as for screwworms in all these animals.
Reactivity Profile
Organothiophosphates, such as COUMAPHOS(56-72-4), are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrides. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides. COUMAPHOS(56-72-4) reacts with strong oxidizing agents and alkaline materials.
Air & Water Reactions
Insoluble in water. This compound hydrolyzes slowly under alkaline conditions.
Hazard
Use may be restricted; cholinesterase inhibitor. Questionable carcinogen.
Health Hazard
Very toxic, probable oral lethal dose is 50-500 mg/kg, or between 1 teaspoonful and 1 oz. for a 70 kg (150 lb.) person. May be fatal if inhaled, swallowed, or absorbed through skin. Contact may cause burns to skin and eyes.
Health Hazard
Exposures to coumaphos cause signs of poisoning such as diarrhea, drooling, diffi culty in breathing, leg and neck stiffness among occupational workers. Acute inhalation of coumaphos causes headaches, dizziness, and incoordination. Moderate poisoning causes muscle twitching and vomiting while severe poisoning leads to fever, toxic psychosis, lung edema, and high blood pressure. Repeated exposures cause irritability, confusion, headache, speech diffi culties, effects on memory concentration, disorientation, severe depressions, sleepwalking, and drowsiness or insomnia among occupational workers. Coumaphos has been classifi ed as non-carcinogenic to humans
Potential Exposure
A potential danger to those involved in the manufacture, formulation, and application of this material which is used for control of a wide variety of livestock insects including cattle grubs, lice scabies, flies, and ticks; the common ectoparasites of sheep, goats, horse, swine, and poultry; as well as for screw worms in all these animals.
First aid
If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water, followed by alcohol. Speed in removing material from skin is of extreme importance. Shampoo hair promptly if contaminated. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a Medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit. Effects may be delayed. Keep victim under observation.
Fire Hazard
When heated to decomposition, COUMAPHOS emits very toxic fumes of sulfur oxides, phosphorus oxides, and chlorides. Incompatible with piperonyl butoxide. Stable in water.
Shipping
UN2783 Organo phosphorus pesticides, solid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous material. UN3018 Organophosphorus pesticides, liquid, toxic, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.
Incompatibilities
Organophosphates are susceptible to formation of highly toxic and flammable phosphine gas in the presence of strong reducing agents such as hydrideds and active metals. Partial oxidation by oxidizing agents may result in the release of toxic phosphorus oxides. Keep away from piperonyl butoxide, oxidizers, strong bases, water, and heat
Waste Disposal
Coumaphos can be decomposed by heating with concentrated alkali. Large amounts should be incinerated in a unit equipped with effluent gas scrubbing. Do not discharge into drains or sewers. Dispose of waste material as hazardous waste using a licensed disposal contractor to an approved landfill. Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (>=100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposal. Incineration with effluent gas scrubbing is recommended. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office

Safety Data

Hazard Codes 
T+,N,Xn,F
Risk Statements 
R21:Harmful in contact with skin.
R28:Very Toxic if swallowed.
R50/53:Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R36:Irritating to the eyes.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R11:Highly Flammable.
Safety Statements 
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S36/37:Wear suitable protective clothing and gloves .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S60:This material and/or its container must be disposed of as hazardous waste .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S36:Wear suitable protective clothing .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S16:Keep away from sources of ignition-No smoking .
RIDADR 
2783
RTECS 
GN6300000
HazardClass 
6.1(a)
PackingGroup 
II
Safety Profile
Poison by ingestion, sktn contact, inhalation, and intraperitoneal routes. Mutation data reported. When heated to decomposition, it emits very toxic fumes of SOx, PO,, and Cl-. See also COUMARIN.
Hazardous Substances Data
56-72-4(Hazardous Substances Data)

Raw materials And Preparation Products

Material Safety Data Sheet(MSDS)

msds information
coumaphos(56-72-4).msds

Well-known Reagent Company Product Information

Sigma Aldrich
56-72-4(sigmaaldrich)