THIONAZIN Chemical Properties

Melting point:

-1.7℃

Boiling point:

bp 80°

Density 

1.204-1.210 g/cm³ (25 ºC)

refractive index 

1.5131 (589.3 nm 25℃)

Flash point:

100 °C

storage temp. 

2-8°C

solubility 

Chloroform (Sparingly), Ethyl Acetate (Slightly), Methanol (Slightly)

form 

liquid

pka

-1.22±0.10(Predicted)

Water Solubility 

1.14g/L(25 ºC)

BRN 

884916

Stability:

Hygroscopic

EPA Substance Registry System

Thionazin (297-97-2)

Safety Information

Hazard Codes 

T+,Xn,F

Risk Statements 

27/28-40-21/22-36-20/21/22-11

Safety Statements 

36/37/39-38-45-36/37-26-16

RIDADR 

3018

WGK Germany 

2

RTECS 

TF5775000

HazardClass 

6.1(a)

PackingGroup 

I

HS Code 

29339900

Hazardous Substances Data

297-97-2(Hazardous Substances Data)

Toxicity

LD50 in female, male rats (mg/kg): 3.5, 6.4 orally; 11, 17 dermally (Gaines)

THIONAZIN Usage And Synthesis

Chemical Properties

Amber liquid. Slightly soluble in water; miscible with most organic solvents.

Uses

Nematocide; insecticide.

Definition

ChEBI: Thionazin is an organic thiophosphate.

General Description

Amber liquid. Pure compound is almost colorless; technical product is light brown to tan. Used in insecticides, fungicides, and nematocides. Not registered as a pesticide in the U.S.

Reactivity Profile

Organothiophosphates, such as THIONAZIN, 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.

Hazard

Toxic by ingestion, inhalation, and skin absorption; cholinesterase inhibitor.

Health Hazard

Extremely toxic by ingestion and skinabsorption; cholinesterase inhibitor; exhibitsacute, delayed, and chronic effect; symptomsof cholinergic effects include excessive salivation, lacrimation, blurred vision, musclespasms, headache, weakness, mental confusion, vomiting, diarrhea, stomach pain, convulsions, and coma; also causes shortnessof breath, respiratory depression, and respiratory paralysis; ingestion of small quantity(0.5–1.59) could be fatal to adult humans;poisoning effects may onset several hoursafter exposure.
LD50 oral (rat): 3.5–6 mg/kg
LD50 oral (mouse): 5 mg/kg
LD50 skin (rat): 8 mg/kg
LD50 skin (guinea pig): 10 mg/kg.

Health Hazard

Cholinesterase inhibitor. (Non-Specific -- Organic Phosphate Compound, Liquid, Poison B). Poisonous; may be fatal if inhaled, swallowed or absorbed through skin. Contact may cause burns to skin and eyes.

Fire Hazard

(Non-Specific -- Organic Phosphate Compound, Liquid, Poison B). THIONAZIN may burn but does not ignite readily. (Non-Specific -- Organic Phosphate Compound, Liquid, Poison B). Fire may produce irritating or poisonous gases.

Safety Profile

Poison by ingestion, skin contact, and ocular routes. A cholinesterase inhibitor type of insecticide. When heated to decomposition it emits highly toxic fumes of NOx, POx, and SOx. See also PARATHION.

THIONAZIN(297-97-2)Related Product Information

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