DIOXATHION Chemical Properties

Melting point:

-20°

Boiling point:

240°C (estimate)

Density 

d426 1.257

refractive index 

nD20 1.5420

storage temp. 

0-6°C

form 

liquid

Stability:

Stable. Incompatible with strong acids, alkalies. May react with iron or tin.

EPA Substance Registry System

Dioxathion (78-34-2)

Safety Information

Hazard Codes 

T+,N

Risk Statements 

24-26/28-50/53

Safety Statements 

28-36/37-45-60-61

RIDADR 

3018

OEB

C

OEL

TWA: 0.2 mg/m3 [skin]

RTECS 

TE3350000

HazardClass 

6.1(a)

PackingGroup 

I

HS Code 

29329990

Hazardous Substances Data

78-34-2(Hazardous Substances Data)

Toxicity

LD50 in female, male rats (mg/kg): 23, 43 orally; 63, 235 dermally (Gaines)

DIOXATHION Usage And Synthesis

Description

Dioxathion is a viscous, reddish-brown liquidor powder with a garlic-like odor. Technical product is amixture of cis- and trans-isomers. Molecularweight= 456.56; Boiling point = (decomposes).135℃;Freezing/Melting point = 220℃. Hazard Identification(based on NFPA-704 M Rating System): Health 3,Flammability 1, Reactivity 0. Insoluble in water.

Chemical Properties

dark amber viscous liquid

Uses

Dioxathion is an organophosphate pesticide. It is used as an insecticide on livestock and acaricide on citrus fruits.

Uses

Insecticide; acaricide.

Definition

ChEBI: Dioxation is a member of dioxanes.

General Description

Tan liquid (technical grade is brown). Used for the control of insects and mites on grapes, citrus, walnuts, ornamentals, apples, pears, and quince. Also used as a spray or dip for the control of ticks, lice, hornfly, and sheep ked on cattle, goats, sheep, and hogs.

Air & Water Reactions

Insoluble in water. DIOXATHION is stable in water at a neutral pH.

Reactivity Profile

DIOXATHION is heat sensitive. DIOXATHION may react with iron or tin surfaces. DIOXATHION may be hydrolyzed by strong acids or alkalis. . Organophosphates 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.

Health Hazard

Very toxic. Probable oral lethal dose for humans is 50-500 mg/kg or between 1 teaspoonful and 1 oz. for a 70 kg (150 lb.) person. It is a cholinesterase inhibitor. Death is primarily due to respiratory arrest arising from failure of the respiratory center, paralysis of respiratory muscles, intense bronchoconstriction, or all three.

Fire Hazard

Shock can shatter container, releasing contents. (Non-Specific -- Organophosphorus Pesticide, Liquid, n.o.s.) Container may explode in heat of fire. Fire may produce irritating or poisonous gases. Runoff from fire control water may give off poisonous gases. Runoff from fire control or dilution water may cause pollution. When heated to decomposition, DIOXATHION emits highly toxic fumes of oxides of nitrogen, phosphorus, and sulfur. Avoid alkali materials and heat. DIOXATHION is unstable to iron or tin surfaces and when mixed with certain carriers.

Safety Profile

Poison by ingestion, inhalation, skin contact, and intraperitoneal routes. Mutation data reported. A cholinesterase inhibitor. When heated to decomposition it emits very toxic fumes of POx, and SOx,. See also PARATHION

Potential Exposure

AgriculturalChemical; Tumorigen, Mutagen; Human Data. Thoseinvolved in the manufacture, formulation, or application ofthis insecticide and acaricide for control of insects andmites on grapes, citrus, etc.

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Speed in removing material from skinis of extreme importance. Shampoo hair promptly if contaminated. Seek medical attention immediately. If thischemical has been inhaled, remove from exposure, beginrescue breathing (using universal precautions, includingresuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.Effects may be delayed; medical observation is recommended. Obtain authorization and/or further instructionsfrom the local hospital for administration of an antidote orperformance of other invasive procedures.

storage

Color Code—Blue: Health Hazard/Poison: Storein a secure poison location. Prior to working with thischemical you should be trained on its proper handling andstorage. Store in tightly closed containers in a cool, wellventilated area.

Shipping

Dioxathion requires a “POISONOUS/TOXICMATERIALS” label. They fall in Hazard Class 6.1 and inPacking Group II. This chemical is a regulated marinepollutant.

Incompatibilities

Incompatible with strong acids.Decomposes above 135℃, forming toxic oxides of phosphorus and sulfur. Attacks iron and tin surfaces.Hydrolyzed by alkalies. Dioxathion is hydrolyzed by strongbases; attacks iron and tin surfaces. Strong oxidizers maycause release of toxic phosphorus oxides.Organophosphates, in the presence of strong reducingagents such as hydrides, may form highly toxic and flammable phosphine gas. Keep away from alkaline materials.

DIOXATHION(78-34-2)Related Product Information

• DIOXATHION SOLUTION 100UG/ML IN METHANOL 5X1ML
• DIOXATHION SOLUTION 100UG/ML IN ISOOCTANE 5X1ML
• DIOXATHION SOLUTION 100UG/ML IN METHANOL 5ML
• cis-Dioxathion
• DIOXATHION SOLUTION 100UG/ML IN METHANOL 1ML
• Dimethylphosphorodithioate
• Diethylphosphorodithioate
• O,O-Diethyl S-methyl dithiophosphate
• DIOXATHION
• 1,4-Dioxane
• O,O,S-TRIMETHYLDITHIOPHOSPHATE