Insecticide Malathion 90%TC Cas 121-75-5

Malathion is an organophosphate parasympathomimetic drug that irreversibly binds to cholinesterase. It is an insecticide with relatively low toxicity to humans.

CasNo: 121-75-5

Formula: C21H24Cl2O4

Physical State: liquid

Purity(%): 90%

Application: Agricultura

Color:Dark Brown to yellow

Formulation:45% 70%EC 1.2%powder and used to manufacturer more formulated product

  • Category: Insecticide
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Malathion, an organophosphate parasympathetic drug that binds irreversibly to cholinesterase, is an insecticide with relatively low human toxicity.

the effect on the environment

1. Health hazards

Routes of entry: inhalation, ingestion, and percutaneous absorption. Health Hazard: Inhibit cholinesterase activity, causing neurophysiological dysfunction. Acute poisoning: Occupational poisoning is rare, mostly caused by oral administration. Manifestations include headache, dizziness, loss of appetite, nausea, vomiting, abdominal pain, diarrhea, salivation, miosis, increased respiratory secretions, sweating, and fasciculations. In severe cases, pulmonary edema, cerebral edema, coma, and respiratory paralysis may occur. Some cases may have heart, liver and kidney damage. In a small number of severe cases, peripheral neuropathy develops weeks or months after recovery of consciousness. Delayed sudden death may occur in individual severe cases. Blood cholinesterase activity decreased. Chronic poisoning: still controversial. There are neurasthenic syndrome, hyperhidrosis, muscle fasciculation and so on. Blood cholinesterase activity decreased. Stimulates and sensitizes the skin and can cause dermatitis.

2. Toxicological information and environmental behavior

Toxicity: It belongs to the category of low toxicity. Acute toxicity: LD50 1800mg/kg (rat oral); 4444mg/kg (rat dermal) Subacute and chronic toxicity: Chronic toxicity is very low, feeding rats with 5000ppm feed for 2 years without death. Mutagenicity: Microbial mutagenicity: Salmonella typhimurium 10mg/L; Bacillus subtilis 1nmol/dish; other microorganisms 100mg/L. Sister chromatid exchange: human lymphocytes 20mg/L; human fibroblasts 5mg/L. Reproductive Toxicity: Rat oral minimum toxic dose (TDL0): 5550mg/kg (pregnancy 91 days/1-20 days), causing abnormal development of body wall. Rat oral minimum toxic dose (TDL0): 283mg/kg (pregnant 9th day), abnormal urinary system. Rats were fed with 1000mg malathion original drug/kg beverage for 92 weeks, and the body weight could increase normally. Aquatic organism tolerance limit (48 hours): carp is 9.0ppm Malathion is low toxicity to fish, but its decomposition product diethyl maleate, maleic acid is highly toxic to aquatic organisms, and highly toxic to beneficial insects such as bees . Metabolism and Degradation: Malathion is degraded mainly by hydrolysis and oxidation. These reactions can take place in air, water, soil and living organisms. In soil, malathion can be rapidly hydrolyzed by microbial activity. 7% of malathion was degraded per day in disinfected soil, while 97% of malathion was degraded in normal soil. Residue and accumulation: malathion is a weak accumulation compound, and its residues in soil, crops and organisms are not serious. Migration and transformation: The behavior of malathion in the environment is the same as that of organophosphorus pesticides. It can migrate between the atmosphere, water and soil, and is unlikely to be carried by organisms.

Hazardous characteristics: Combustible in case of open flame and high heat. Reacts with strong oxidizing agents. When heated, it will decompose and emit toxic gases such as phosphorus and sulfur oxides. Combustion (decomposition) products: carbon monoxide, carbon dioxide, phosphorus oxide, sulfur oxide.

Emergency treatment and disposal methods

The storage place should be dry, dark and airtight, and the storage temperature should be 1-30°C. It cannot be mixed with acid and alkali pesticides, and should not be packed in metal utensils to avoid decomposition and failure.

Atropine and detoxifying phosphorus are first-aid agents for malathion. If this product is taken by mistake, it should be dealt with as follows: 1. Consult a doctor; 2. Inject 1-2 mg of atropine subcutaneously; 3. Fully wash the stomach; 4. Drink a small amount of hot milk and soda when the upper respiratory tract is stimulated; 5. Eyes Immediately wash eyes with clean boiled water when contaminated; 6. When the skin is inflamed, wrap it with a bandage wet with 0% soda water.

Firefighting: Water, sand and foam fire extinguishers can be used to extinguish the fire, and care should be taken to prevent personal poisoning when extinguishing the fire.

Leakage emergency treatment: quickly evacuate personnel from the leaked contaminated area to a safe area, isolate and strictly restrict access. Cut off the fire source. It is recommended that emergency personnel wear anti-virus clothing, etc. Small amount of leakage: Absorb or absorb with sand or other non-combustible materials. It can also be washed with a large amount of water, diluted with water and put into the waste water system. Build dikes or dig pits for a large number of leaks. Cover with foam to reduce vapor hazards. Use a pump to transfer it to a tank truck or a special collector, and recycle it or transport it to a waste treatment site for disposal.

Package of Malathion

We also supply some accessories to add more functions for end-users' convenience, which also help our distributors and business partners sell our products in their area. Any special package requirements, please don't be hesitate to tell us.

Large Package:

Solid: 25Kg UN approved fiber drums with LDPE liner

Liquid: 200L UN approved HDPE or iron drums.

Retail Package:

Solid: 10g;50g;100g;500g;1kg;5kg;25kg

Suppliers of Malathion

Agripestcide is a professional agrochemical chemical manufacturer supplying good quality and effective Insecticide Malathion with high quality and good service. If you are looking for Insecticide Malathion, feel free to contact us for latest price.





Molecular Weight




Melting Point


Boiling Point

385.1±52.0 °C at 760 mmHg

Physical State



Dark Brown to yellow




25kg Cardboard barrel




Ventilation low temperature drying




2 years

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