Part I: Names of Chemicals

Part II: Composition/Composition Information

The third part: risk overview.

Part IV: First aid measures

Part V: Fire Prevention Measures

Part VI: Emergency treatment of leakage.

Part VII: Operation, Disposal and Storage

Part VIII: Contact Control/Personal Protection

Part IX: Physical and Chemical Characteristics

Part X: Stability and Reactivity

Part XI: Toxicological data

Part XII: Ecological data

Part XIII: Abandonment and Disposal

Part XIV: Transportation Information

Part XV: Regulatory Information

Part XVI: Poisoning Events Part I: Names of Chemicals

Part II: Composition/Composition Information

The third part: risk overview.

Part IV: First aid measures

Part V: Fire Prevention Measures

Part VI: Emergency treatment of leakage.

Part VII: Operation, Disposal and Storage

Part VIII: Contact Control/Personal Protection

Part IX: Physical and chemical characteristics Part X: Stability and reactivity Part XI: Toxicological data Part XII: Ecological data Part XIII: Abandoned disposal Part XIV: Transportation information Part XV: Regulatory information Part XVI: Poisoning incidents

[Edit this paragraph] Part I: Chemical names

Chemical Chinese name: methamidophos

English name of chemical: methamidophos

English name 2: Duomiling

English name 2: O, S- dimethyl phosphorothioamide ester

CASNo.: 10265-92-6

Molecular formula: C2H8ONPS

Molecular weight: 14 1. 14

Structural formula:

? O

? ‖

CH3O - P - NH2

? ┃

? SCH3

[Edit this paragraph] Part II: Composition/Composition Information

Harmful component: methamidophos

Content: 50%

CASNo.: 10265-92-6

[Edit this paragraph] Part III: Hazard Overview

Health hazard: inhibition of cholinesterase activity, leading to neurophysiological dysfunction.

Acute poisoning: acute poisoning caused by a large number of short-term contacts (oral, inhalation, skin and mucous membrane). Symptoms include headache, dizziness, loss of appetite, nausea, vomiting, abdominal pain, diarrhea, salivation, pupil shrinkage, increased respiratory secretions, hyperhidrosis, muscle tremor and so on. In severe cases, pulmonary edema, brain edema, coma and respiratory paralysis occur. In some cases, there may be heart, liver and kidney damage. A few serious cases develop into peripheral neuropathy after several weeks or months of consciousness recovery. Delayed sudden death may occur in some serious cases. Blood cholinesterase activity decreased. Chronic poisoning: still controversial. There are neurasthenia syndrome, hyperhidrosis, muscle tremor and so on. Blood cholinesterase activity decreased.

Explosion hazard: This product is flammable and highly toxic.

Hazard characteristics: flammable in case of open fire and high heat. Thermal decomposition will release toxic gases, such as oxides of nitrogen and phosphorus.

[Edit this paragraph] Part IV: First aid measures

Skin contact: Take off the contaminated clothes immediately, and thoroughly wash the contaminated skin, hair and nails with soapy water and flowing clean water. See a doctor.

Eye contact: Lift eyelids and rinse with running water or normal saline. See a doctor.

Inhalation: leave the scene quickly and go to a place with fresh air. Keep the respiratory tract unobstructed. If you have difficulty breathing, give oxygen. If breathing stops, give artificial respiration immediately. See a doctor.

Intake: Drink enough warm water to induce vomiting. Gastric lavage with clean water or 2% ~ 5% sodium bicarbonate solution. See a doctor.

[Edit this paragraph] Part V: Fire Prevention Measures

Hazard characteristics: flammable in case of open fire and high heat. Thermal decomposition will release toxic gases, such as oxides of nitrogen and phosphorus.

Harmful combustion products: carbon monoxide, carbon dioxide, nitrogen oxides and phosphorus oxides.

Fire extinguishing method: Firefighters must wear gas masks and full-body fire protection suits to extinguish the fire in the upwind direction. Extinguishing agent: dry powder, anti-soluble foam, sand.

[Edit this paragraph] Part VI: Emergency treatment of leakage

Emergency treatment: quickly evacuate the personnel in the leaked and polluted area to a safe area, isolate them, and strictly restrict access. Cut off the fire. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and protective clothing. Don't touch the leak directly. Cut off the leakage source as much as possible. Prevent it from flowing into confined spaces such as sewers and flood discharge ditches. Small amount of leakage: adsorbed or absorbed by sand or other nonflammable substances. A large number of leaks: damming or digging holes to contain them. Clean up under the guidance of experts.

[Edit this paragraph] Part VII: Operation, Disposal and Storage

Precautions for operation: Close the operation and provide sufficient local exhaust. The operation should be as mechanized and automated as possible. Operators must be specially trained and strictly abide by the operating procedures. Operators are advised to wear self-priming filter gas mask (full face mask), polyethylene gas suit and rubber gloves. Stay away from kindling and heat sources, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation system and equipment. Prevent smoke or dust from leaking into the air in the workplace. Avoid contact with oxidants and alkalis. When handling, handle with care to prevent the packaging and containers from being damaged. Equipped with corresponding varieties and quantities of fire fighting equipment and leakage emergency treatment equipment. Empty containers may leave harmful substances behind.

Precautions for storage: Store in a cool and ventilated warehouse. Stay away from fire and heat sources. The package is sealed. Should be stored separately from oxidants, alkalis and edible chemicals, and should not be mixed. Equipped with corresponding varieties and quantities of fire fighting equipment. The storage area should be equipped with emergency response equipment for leakage and suitable accommodation materials. The "five pairs" management system of highly toxic substances should be strictly implemented.

[Edit this paragraph] Part VIII: Contact Control/Personal Protection

occupational exposure limits

China MAC(mg/m3): No standard has been established.

Former Soviet Union MAC(mg/m3): No standard has been formulated.

TLVTN: No standards have been established.

TLVWN: No standard has been established.

Monitoring method: naphthyl ethylenediamine hydrochloride colorimetry.

Engineering control: tightly sealed to provide sufficient local exhaust. Mechanize and automate as much as possible.

Respiratory system protection: You must wear a self-priming filter gas mask (full face mask) when working in production or using in agriculture. Wear air respirator for emergency rescue or evacuation.

Eye protection: respiratory protection has been done.

Physical protection: Wear polyethylene gas protective clothing.

Hand protection: wear rubber gloves.

Other protection: shower and change clothes after work. Pay attention to personal hygiene.

[Edit this paragraph] Part IX: Physical and chemical characteristics

Main ingredients: content: 50% emulsifiable concentrate; 25% EC; 2% powder.

Appearance and properties: pure products are white needle-like crystals, industrial products are colorless viscous liquids, which can precipitate needle-like crystals after cooling or standing.

PH value:

Melting point (℃): 43 (pure); 18 ~ 25 (industrial products)

Boiling point (℃): No data available.

Relative density (water = 1): No data available.

Relative steam density (air = 1): No data available.

Saturated vapor pressure (kpa): 0.00004 (30℃)

Combustion heat (kJ/mol): no data available.

Critical temperature (℃): No data available.

Critical pressure (MPa): No data available.

Logarithmic value of octanol/water partition coefficient: No data available.

Flash point (℃): No data available.

Ignition temperature (℃): No data available.

Upper explosion limit %(V/V): No data available.

Lower explosive limit %(V/V): No data.

Solubility: slightly soluble in water, soluble in alcohol.

Main uses: broad-spectrum and efficient insecticide, used to control cotton spiders, aphids, mites and so on. It has a good control effect on drug-resistant pests.

Other physical and chemical properties:

[Edit this paragraph] Part X: Stability and reactivity

Stability:

Prohibited compounds: strong oxidant, strong alkali.

Conditions for avoiding contact:

Aggregation danger:

Decomposition products:

[Edit this paragraph] Part XI: Toxicological data

Acute toxicity: LD 50: 20 ~ 29.9 mg/kg (by mouth in rats); 50 mg/kg (rat skin)

LC50: 525mg/m3, 1h (inhaled by rats); 19 mg/m3 (inhaled by mice)

Subacute and chronic toxicity:

Irritant:

Sensitization:

Mutagenicity:

Teratogenicity:

Carcinogenicity:

[Edit this paragraph] Part XII: Ecological data

Eco-toxicological toxicity:

Biodegradability:

Non-biodegradable:

Bioaccumulation or bioaccumulation:

Other harmful effects: the substance may be harmful to the environment, so it is recommended not to let it into the environment.

[Edit this paragraph] Part XIII: Abandoned disposal

Nature of waste:

Disposal method of waste: refer to relevant national and local laws and regulations before disposal. Incineration is recommended. The gas discharged from the incinerator should be removed by a scrubber.

Abandoned preventive measures:

[Edit this paragraph] Part XIV: Transportation Information

Dangerous goods code: 6 1 125

UN number: 2783

Packaging mark:

Packing category: O52

Packing method: steel drums with full opening outside or middle opening in plastic bags or double-layer kraft paper bags (steel plate thickness is 1.0mm, and the net weight of each drum does not exceed150kg; The thickness of steel plate is 0.75 mm, and the net weight of each barrel does not exceed100 kg); Screw-capped glass bottles, iron-capped glass bottles, plastic bottles or ordinary wooden cases outside metal barrels (cans).

Matters needing attention in transportation: Railway transportation should be carried out in strict accordance with the dangerous goods loading table in the Rules for the Transport of Dangerous Goods of the Ministry of Railways. Check whether the packaging container is complete and sealed before transportation to ensure that the container does not leak, collapse, fall or be damaged during transportation. It is strictly prohibited to mix with acids, oxidants, food and food additives. Transport vehicles shall be equipped with corresponding varieties and quantities of fire fighting equipment and leakage emergency treatment equipment. Exposure, rain and high temperature should be prevented during transportation. Highway transportation shall follow the prescribed route and shall not stay in residential areas and densely populated areas.

[Edit this paragraph] Part XV: Regulatory Information

Regulatory information: Regulations on the Safety Management of Hazardous Chemicals (promulgated by the State Council 1987 in February), Detailed Rules for the Implementation of the Regulations on the Safety Management of Hazardous Chemicals (Hua Laofa [1992] No.677) and Regulations on the Safe Use of Chemicals in the Workplace (issued by the Ministry of Labor [1996] 427). Classification and Labeling of Commonly Used Hazardous Chemicals (GB 13690-92) classifies this substance as class 6. 1 poison; In the classification, classification and product name number (GA 57-93) of highly toxic substances, this substance belongs to the fourth class B organic drama drugs.

Other laws and regulations: Technical Specification for Production Safety of Methamidophos (HGA024-83).

[Edit this paragraph] Part XVI: Poisoning incident

In 2008, Chinese-made frozen jiaozi was poisoned.

On June 5438+ 10, 2008, a Japanese consumer bought a handmade jiaozi made in Chinese mainland, and the whole family developed poisoning symptoms. Jiaozi was found to contain methamidophos residues.