Metasystox

460.575

460.04000

B9PMD9I0FE

0862

3018

DTXSID3040277

190.83000

5.79760

Methyl demeton is an oily colorless to pale yellow liquid with an unpleasant odor. Slightly water soluble.

1.2 g/cm³

Decomposes

1.5063

0.03-0.3%

0.0004 mmHg

Oral-rat LD50: 26 mg/kg

Open flame is flammable; heat decomposes toxic phosphorus oxide and sulfur oxide gas

Slightly water soluble. Hydrolyzed by alkali (NTP, 1992).

Esters, Sulfate Esters, Phosphate Esters, Thiophosphate Esters, and Borate Esters

Organothiophosphates, such as METHYL DEMETON, 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.

Combustible Liquid

II

6.1(a)

3018

24/25-51/53

(1/2)-28-36/37-45-61

TG1760000

T, N

The warehouse is ventilated, low temperature and dry; stored and transported separately from food materials

P201, P202, P260, P261, P262, P264, P270, P271, P272, P273, P280, P281, P284, P301+P310, P302+P350, P302+P352, P304+P340, P305+P351+P338, P307+P311, P308+P313, P310, P314, P320, P321, P322, P330, P332+P313, P333+P313, P337+P313, P361, P363, P391, P403+P233, P405, P501

H300

Flash point data for this chemical are not available. It is probably combustible. (NTP, 1992)|Combustible. Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.

|Danger|H300: Fatal if swallowed [Danger Acute toxicity, oral]|P201, P202, P260, P261, P262, P264, P270, P271, P272, P280, P281, P284, P301+P310, P302+P350, P302+P352, P304+P340, P305+P351+P338, P307+P311, P308+P313, P310, P314, P320, P321, P322, P330, P332+P313, P333+P313, P337+P313, P361, P363, P403+P233, P405, and P501

Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher. (NTP, 1992)|Use water spray, powder, foam, carbon dioxide.

Excerpt from ERG Guide 152 [Substances - Toxic (Combustible)]: As an immediate precautionary measure, isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids. SPILL: Increase, in the downwind direction, as necessary, the isolation distance shown above. FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2016)

SMALL SPILLS AND LEAKAGE: If you should spill this chemical, use absorbent paper to pick up all liquid spill material. Seal the absorbent paper, as well as any of your clothing which may be contaminated, in a vapor-tight plastic bag for eventual disposal. Wash any surfaces you may have contaminated with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned. STORAGE PRECAUTIONS: You should store this material in a refrigerator. (NTP, 1992)

Skin: Wear appropriate personal protective clothing to prevent skin contact. Eyes: Wear appropriate eye protection to prevent eye contact. Wash skin: The worker should immediately wash the skin when it becomes contaminated. Remove: Work clothing that becomes wet or significantly contaminated should be removed and replaced. Change: Workers whose clothing may have become contaminated should change into uncontaminated clothing before leaving the work premise. Provide: Eyewash fountains should be provided in areas where there is any possibility that workers could be exposed to the substance; this is irrespective of the recommendation involving the wearing of eye protection. Facilities for quickly drenching the body should be provided within the immediate work area for emergency use where there is a possibility of exposure. [Note: It is intended that these facilities provide a sufficient quantity or flow of water to quickly remove the substance from any body areas likely to be exposed. The actual determination of what constitutes an adequate quick drench facility depends on the specific circumstances. In certain instances, a deluge shower should be readily available, whereas in others, the availability of water from a sink or hose could be considered adequate.] (NIOSH, 2016)|(See protection codes)

Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.

Keep in a well-ventilated room. Separated from food and feedstuffs. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.

Evaporation at 20 °C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying.

The substance may cause effects on the central nervous system. Cholinesterase inhibition. Medical observation is indicated. The effects may be delayed. Exposure could cause death.

NO open flames.

PREVENT GENERATION OF MISTS! STRICT HYGIENE! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN! IN ALL CASES CONSULT A DOCTOR!

Use ventilation, local exhaust or breathing protection.

Protective clothing. Protective gloves.

Wear face shield or eye protection in combination with breathing protection.

most toxic

Pesticides designed to control insects that are harmful to man. The insects may be directly harmful, as those acting as disease vectors, or indirectly harmful, as destroyers of crops, food products, or textile fabrics. (See all compounds classified as Insecticides.)

Exposure Routes: inhalation, skin absorption, ingestion, skin and/or eye contact Symptoms: Irritation eyes, skin; ache eyes, rhinorrhea (discharge of thin mucus); nausea, headache, dizziness, vomiting Target Organs: Eyes, skin, respiratory system, central nervous system, cardiovascular system, blood cholinesterase (NIOSH, 2016)

EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop. SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas. INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing. INGESTION: CHOLINESTERASE INHIBITORS ARE EXTREMELY TOXIC AND FAST-ACTING POISONS. IMMEDIATELY call a hospital of poison control center and transport the victim to a hospital. Atropine is an antidote for cholinesterase inhibitors but should only be administered by properly trained personnel. In the absence of this option and if the victim is conscious and not convulsing, it may be worth considering the risk of inducing vomiting, even though the induction of vomiting is not usually recommended outside of a physician's care. Ipecac syrup or salt water may be used to induce vomiting in such an emergency. If the victim is convulsing or unconscious, do not give anything by mouth, assure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)|(See procedures)

Fresh air, rest. Refer for medical attention.

Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention .

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

demeton-methyl

The substance can be absorbed into the body by inhalation, through the skin and by ingestion.|inhalation, skin absorption, ingestion, skin and/or eye contact

irritation eyes, skin; ache eyes, rhinorrhea (discharge of thin nasal mucus); nausea, headache, dizziness, vomiting

Convulsions. Dizziness. Laboured breathing. Nausea. Pupillary constriction, muscle cramp, excessive salivation. Sweating. Unconsciousness.

MAY BE ABSORBED! See Inhalation.

Pupillary constriction. Blurred vision.

Eyes, skin, respiratory system, central nervous system, cardiovascular system, blood cholinesterase