Chemical formula: CH2═CHCN
Three-dimensional model of chemical properties: molecular weight 53.06
Pungent odor colorless liquid. Melting point -82℃. Density 0.806g/cm3. flash point -1.1℃ (open cup). Spontaneous combustion point 48l ℃. Refractive index 1.388, soluble in water, ether, ethanol, acetone, benzene and carbon tetrachloride. Formed with water **** boiling material. Volatile and corrosive. In the presence of oxygen, can polymerize by itself when exposed to light and heat. Flammable, with fire, high temperature, oxidizing agent has the danger of combustion and explosion, its vapor and air to form explosive mixtures. Extremely toxic! Not only is the vapor toxic, but also can be poisoned by skin inhalation. The permissible concentration in anger is 20ppm.
Physical properties: colorless liquid, boiling point 77.3 ℃, is a bulk of basic organic chemical products, is the three major synthetic materials - synthetic fibers, synthetic rubber, plastics, basic and important raw materials, in the organic synthetic industry and the people's economic life in a wide range of uses.
Application: acrylonitrile is used to produce polypropylene fiber (i.e. synthetic fiber acrylic), acrylonitrile-butadiene-styrene plastics (ABS), styrene plastics, and acrylamide (hydrolysis product of acrylonitrile). In addition, acrylonitrile can be hydrolyzed to produce acrylates and the like. Acrylonitrile can be polymerized into a linear polymer compound, polyacrylonitrile, under the action of an initiator (peroxycarbonyl). Acrylic made of polyacrylonitrile has a soft texture, similar to wool, commonly known as "artificial wool", which has high strength, light specific gravity, good heat preservation, resistance to sunlight, acid and most solvents. Acrylonitrile and butadiene **** polymer production of nitrile rubber has good oil resistance, cold resistance, solvent resistance and other properties, is the most important rubber in modern industry, is widely used.
wangjiaqiwjq added:
Acrylonitrile, alias, cyanoethylene; structural formula, CH2=CH-CN; for the colorless flammable liquid, highly toxic, irritating taste, slightly soluble in water, soluble in organic solvents; in contact with fire, high temperature, oxidants have a risk of combustion and explosion, and its vapor and air mixture can become an explosive mixture, the explosion limit is 3.1%-17% (v/v); boiling point 77.3oC, flash point -5 °C, autoignition point 481oC.
SECCO produces acrylonitrile by direct oxidation method with propylene, ammonia and air as raw materials.
Acrylonitrile is mainly used as an important raw material for the production of synthetic fiber, synthetic resin, synthetic rubber, dyestuff, medicine and other industries.
Chemical name: Acrylonitrile
English name: Acrylonitrile;Vinyl cyanide
Chemical alias: Vinyl cyanide
Chemical molecular formula: CH2:CHCN
Main uses: Used as an organic raw material; also used as a fumigant for grain
Toxicity protection: This product is extremely toxic, the toxicity of warm-blooded animals is about 1/30 of hydrogen cyanide. acrylonitrile is not only toxic to the vapor, but also attached to the skin is easy to be poisoned by skin. The LD50 is 15mg/kg for mice and 93mg/kg for rats.Prolonged inhalation of dilute acrylonitrile vapor can cause nausea, vomiting, headache, fatigue and discomfort. The maximum permissible concentration in the workplace is 45mg/m3. The production equipment should be airtight and protective gears should be worn during operation. If acrylonitrile is splashed on the clothes, take off the clothes immediately, and flush with plenty of water if splashed on the skin. If splashed into eyes, flush with running water for more than 15 minutes. If swallowed accidentally, wash the stomach with warm salt water. In case of poisoning, sodium thiosulfate, sodium nitrite should be used for intravenous injection immediately, and consult a doctor.
CAS No.: 107-13-1
Packing, storage and transportation: Packed in iron drums. The storage container should be sealed, the warehouse should be well ventilated, prevent sunlight, and keep away from sulfuric acid, nitric acid and other strong acidic substances. According to the "dangerous goods regulations" storage and transportation.
Physical and chemical properties: colorless volatile transparent liquid, sweet taste, slight odor. Soluble in acetone, benzene, carbon tetrachloride, ether, ethanol and other organic solvents. Slightly soluble in water, and water to form **** boiling mixture. Relative density 0.8060(20/4℃). Freezing point -83～-84℃. Boiling point 77.3℃. Flash point -5℃. Refractive index nD (20 ℃) 1.3888. viscosity (25 ℃) 0.34mPa - s. Vapor pressure (20 ℃) 11.07kPa. the vapor can form explosive mixtures with air, the explosion limit (25 ℃) is 3.05% ~ 17.0% ± 0.5% (volume). Pure product is easy to self-polymerization, especially in the absence of oxygen or exposure to visible light, more easily polymerized, in the presence of concentrated alkali can be strongly polymerized.
Quality standard: GB 7717.1-87
Molecular weight:
Structural formula:
Consumption quota: Raw material name Specification Consumption, kg/t
Montedison-UOP method O.S.W. method
Propylene 100% 1180 1250
Liquid ammonia 100% 480 500
Sulfuric Acid 100% 200
Professional Statutory Number:
Method of Preparation:
ISIN:
Acrylonitrile Poisoning
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Acrylonitrile, CH2=CHCN, is a colorless flammable and volatile liquid with a peculiar almond odor. Slightly soluble in water, its low concentration aqueous solution is very unstable, easily soluble in general solvents. Generate acrylic acid when hydrolyzed and acrylonitrile when reduced. It is easy to polymerize, and can also be polymerized with vinyl acetate, vinyl chloride and other monomers***. Industrially acrylonitrile is mainly used in: acrylic fiber, nitrile rubber, ABS engineering plastics and acrylic ester, acrylic resin manufacturing and so on.
Acrylonitrile belongs to the highly toxic category, which can cause acute poisoning and chronic poisoning after entering into human body. Clinical symptoms of acute poisoning caused by acrylonitrile: mild poisoning manifested as weakness, dizziness, headache, nausea, vomiting, etc., accompanied by mucous membrane irritation; severe poisoning, in addition to the above symptoms, there can be tightness in the chest, palpitations, irritability, dyspnea, cyanosis, convulsions, coma, such as not timely rescue can occur respiratory arrest. The chronic toxicity of acrylonitrile on human body is still inconclusive, generally manifested as neurasthenia syndrome, such as dizziness, headache, fatigue, insomnia, dreamy, irritability and so on. In addition, acrylonitrile can cause contact dermatitis, manifested as erythema, herpes and desquamation, and there can be hyperpigmentation after healing.
All patients with cardiovascular and neurological diseases and active liver and kidney diseases should not work with acrylonitrile.
For the production of acrylonitrile, the place should try to use the open frame building, which is convenient for the diffusion and dilution of poison, and the cleaning operation in the reactor must be fully ventilated to exclude the residual poison, and in addition, the gas mask should be worn and used for the operation.
Example 1 At 9:00 a.m. on March 28, 1984, a petrochemical plant in Shanghai loading and unloading area, such as Huang Mou and other seven workers, loading and unloading of acrylonitrile barrels in the train iron grill wagons, this batch of acrylonitrile from Shenyang Dagongtun station to Shanghai, there is a barrel has been completely leaked out of the train compartments due to the impermeability of all the leaked acrylonitrile gas accumulates in the compartments, Huang Mou and other seven people in the operation of the car for 1.5 hours. After 2 people were poisoned, 5 people inhalation reaction of acrylonitrile collective poisoning accident, the poisoned patients appeared dizziness, chest tightness, panic, vomiting and a series of symptoms of poisoning, by the hospital all-out treatment before successively cured.
Workers engaged in chemical storage, transportation, loading and unloading operations should have knowledge of chemical safety, health, decontamination and other aspects. If the workers understand the hazards of acrylonitrile, decontaminate the contamination caused by the leaking barrel in time and carry out sufficient ventilation before loading and unloading, and take effective personal protective measures, the accident can be avoided or the degree of influence and the impact of the accident can be reduced.
Manufacturer:
Fushun Petrochemical Company
Solubility: Slightly soluble in water, easily soluble in organic solvents such as acetone, benzene, carbon tetrachloride, ethyl ether, ethanol and dimethylformamide. Also soluble in sodium thiocyanate, zinc chloride and other inorganic salts in aqueous solution.
Hazardous properties: its vapor mixed with air can become an explosive mixture, the explosion limit of 3.1-17% (by volume), the maximum permissible concentration of 20 ppm in the air. flammable and explosive, in the presence of fire, high temperature, oxidizing agents have the risk of causing explosion and combustion, in the fire at high temperatures can be polymerized, so that the container burst, and oxidizing agents, strong acids, strong bases, amines, bromine react vigorously. In the presence of oxygen, light and heat can react on its own.
Toxicity: Highly toxic substances, acrylonitrile vapors can invade the human body through the respiratory tract, causing acute poisoning. Inhalation of high concentration of acrylonitrile vapor can cause injury or death if not rescued in time. The American Conference on Governmental Industrial Hygiene (ACGIH) pointed out that acrylonitrile is a suspected potential carcinogen for human beings.
Storage and transportation: Store in a cool, ventilated and dry warehouse, away from fire and heat source, and the storage temperature should be below 30℃. Not to be mixed with oxidizing agents, acids, alkalis, amines *** storage and transportation. Commodities must always check the content of polymerization inhibitor in order to take measures, handling, gently hold and put, prevent damage to the container. Once leaked first cut off all sources of ignition, wear a good gas mask and rubber gloves, flushing with water, sewage discharged into the wastewater system. Use dry powder, anti-soluble foam and carbon dioxide to extinguish the fire. Use water to keep the fire container cool.
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Part I: Chemical Names
Chinese name of the chemical: acrylonitrile (inhibited)
English name of the chemical: acrylonitrile
Chinese name 2: vinyl cyanide
English name 2: cyanoethylene
Technical Specification Code: 255
CAS No.: 107-13-1
Molecular Formula: C3H3N
Molecular Weight: 53.06
Part II: Ingredient/compositional information
Hazardous Component Content CAS No.
Acrylonitrile (inhibited) ≥99% 107-13-1
Part III: Hazard Overview
Hazard Category:
Intrusion Pathway:
Health Hazard: It precipitates cyanogen in the body and inhibits respiratory enzymes; it has direct anesthesia effect on the respiratory center. Acute poisoning performance is similar to hydrocyanic acid. Acute poisoning: central nervous system symptoms, accompanied by upper respiratory tract and eye irritation. Mild poisoning has dizziness, headache, fatigue, epigastric discomfort, nausea, vomiting, chest tightness, numbness of hands and feet, haze and cyanosis of lips and mouth. The conjunctiva of the eyes and the nose and pharynx are congested. In severe cases, in addition to the aggravation of the above symptoms, there are paroxysmal tonic convulsions of the limbs and coma. Liquid contamination of the skin, can cause dermatitis, local erythema, papules or blisters. Chronic poisoning: there is no conclusive
conclusion. Prolonged exposure, some workers appear to God failure syndrome, low blood pressure and so on. Effects on the liver are not certain.
Environmental hazards: serious environmental hazards, can cause pollution of water bodies.
Flammability and explosion hazard: This product is flammable, highly toxic, and a suspected carcinogen.
Part IV: First Aid Measures
Skin Contact: Immediately remove contaminated clothing and rinse thoroughly with running water or 5% sodium thiosulfate solution for at least 20 minutes. Seek medical attention.
Eye contact: lift eyelids and flush with running water or saline. Seek medical attention.
Inhalation: Remove from scene to fresh air. Keep the airway open. If breathing is difficult, give oxygen. In case of respiratory arrest, immediately perform artificial respiration (do not use mouth-to-mouth) and chest compressions. Give inhalation of isoamyl nitrite and seek medical attention.
Ingestion: Drink sufficient warm water and induce vomiting. Gastric lavage with 1:5000 potassium permanganate or 5% sodium thiosulfate solution. Seek medical attention.
Part V: Fire Fighting Measures
Hazardous Characteristics:
Flammable, its vapor and air can form explosive mixtures. When exposed to open flame, high heat can easily cause combustion and release toxic gases. Reacts violently with oxidizing agents, strong acids, strong bases, amines, bromine. Under the high temperature in the fire, it can polymerize and exothermic, and make the container rupture.
Harmful combustion products: carbon monoxide, carbon dioxide, nitrogen oxide, hydrogen cyanide.
Fire-fighting methods: firefighters must wear special protective clothing and operate under cover. Extinguishing agent: anti-soluble foam, carbon dioxide, dry powder, sand. Ineffective to extinguish fire with water, but must use water to keep the fire container cool.
Part VI: Emergency treatment of leakage
Emergency treatment: quickly evacuate the leakage of contaminated area personnel to the safe area, and isolation, strict restrictions on access. Cut off the source of fire. It is recommended that emergency personnel wear self-contained positive-pressure respirators and gas suits. Cut off the source of leakage as far as possible. Prevent flow into restricted spaces such as sewers and flood drains. SMALL SPILL: Absorb with activated carbon or other inert material. May also be flushed with large amounts of water, diluted with wash water and placed in the wastewater system. Large spills: Construct a dike or dig a pit to contain the spill. Cover with foam to reduce vapor hazard. Spray water or foam to cool and dilute vapors, protect site personnel. Use explosion-proof pumps to transfer to the tanker or special collector, recycling or transported to the waste disposal site.
Part VII: Operation, Disposal and Storage
Operation precautions: tightly sealed, provide adequate local exhaust and full ventilation. The operation is mechanized and automated as far as possible. Operators must be specially trained and strictly follow the operating procedures. It is recommended that the operator wear a self-absorbing filtering gas mask (full face mask), a one-piece rubberized cloth gas suit, and rubberized oil-resistant gloves. Keep away from fire and heat sources, and smoking is strictly prohibited in the workplace. Use explosion-proof ventilation systems and equipment. Prevent vapors from leaking into the workplace air. Avoid contact with oxidizing agents, acids and alkalis. Load and unload lightly when handling to prevent damage to packaging and containers. Equip with appropriate varieties and quantities of fire-fighting equipment and emergency response equipment for leakage. Empty containers may retain harmful substances.
Storage precautions: usually commodities with stabilizers. Store in a cool, ventilated warehouse. Keep away from fire and heat source. Storage temperature should not exceed 26 ℃. Packaging requirements sealed, not in contact with air. It should be stored separately from oxidizers, acids, alkalis and edible chemicals, and should not be mixed. It is not suitable for mass storage or long time storage. Use explosion-proof lighting and ventilation facilities. Prohibit the use of mechanical equipment and tools that are easy to generate sparks. The storage area should be equipped with leakage emergency treatment equipment and suitable shelter materials. Strict implementation of extremely toxic substances "five double" management system.
Part VIII: Exposure Control/Personal Protection
Occupational Exposure Limits (OELs)
China MAC (mg/m3): 2[pi]
Former USSR MAC (mg/m3): 0.5
TLVTN: OSHA 2ppm,4.3mg/m3; ACGIH 2ppm,4.3 mg/ m3
TLVTN: OSHA 2ppm,4.3 mg/m3; ACGIH 2ppm,4.3 mg/ m3
TLVTN: OSHA 2ppm, 4.3 mg/m3; ACGIH 2ppm, 4.3 mg/ m3
The following are the occupational limits for the exposure of extremely toxic substances m3
TLVWN: No standard established
Monitoring method: gas chromatography
Engineering controls: tightly sealed, provide adequate local exhaust and full ventilation. Mechanize and automate as much as possible. Provide safety showers and eyewash facilities.
Respiratory Protection: Self-priming filtering gas masks (full face masks) must be worn when exposure to its vapors is possible. When rescuing or evacuating from an emergency situation, an air respirator is recommended.
Eye protection: Respiratory protection has been made.
Body protection: wear a one-piece rubberized gas vest.
Hand protection: Wear rubberized oil-resistant gloves.
Other protection: Smoking, eating and drinking are prohibited at the work site. Wash thoroughly after work. Store the clothes contaminated by poison separately and wash them for use. Workshop should be equipped with first aid equipment and drugs. Operators should learn to save themselves and each other.
Part IX: Physical and Chemical Characteristics
Main components: Content: Grade I ≥ 99%; Grade II 98%.
Appearance and properties: colorless liquid with peach kernel odor.
pH:
Melting Point (℃): -83.6
Boiling Point (℃): 77.3
Relative Density (water=1): 0.81
Relative Vapor Density (air=1): 1.83
Saturated Vapor Pressure (kPa): 13.33 (22.8℃)
Heat of Combustion (kJ/mol): 1757.7
Critical Temperature (℃): 263
Critical Pressure (MPa): 3.5
Logarithmic value of octanol/water partition coefficient: -0.92
Flash Point (℃): -5
Ignition Temperature (℃): 480
% Upper Explosive Limit (V/V): 28.0
Lower Explosive Limit %(V/V): 2.8
Solubility: Slightly soluble in water, soluble in most organic solvents.
Main uses: used in the manufacture of polyacrylonitrile, nitrile rubber, dyestuffs, synthetic resins, pharmaceuticals and so on.
Other Physical and Chemical Properties:
Part X: Stability and Reactivity
Stability:
Prohibited compatibility: strong oxidizing agents, alkalis, acids.
Conditions to avoid exposure: light, air.
Polymerization Hazards:
Decomposition Products:
Part XI: Toxicological Information
Acute Toxicity:
LD50: 78 mg/kg (rat orally); 250 mg/kg (rabbit dermally) LC50: no information
Subacute and Chronic Toxicity:
Irritation: rabbit via eyes: 20 mg Severe Irritation. Rabbit percutaneous: 500mg, mild irritation.
Sensitization:
Mutagenicity:
Teratogenicity:
Carcinogenicity:
Part 12: Ecological Information
Ecotoxicological Toxicity:
Biodegradation:
Non-biodegradation:
Bio-enrichment or bioaccumulation:
Other Harmful Effects: The substance has been shown to be toxic to the environment. Other harmful effects:
The substance is seriously harmful to the environment and special attention should be paid to the pollution of water bodies.
Part XIII: Waste Disposal
Nature of Waste:
Waste Disposal Method: Disposal by incineration. The nitrogen oxides discharged from the incinerator are removed by a scrubber.
Waste Precautions:
Part 14: Transportation Information
Dangerous Goods No.: 32162
UN No.: 1093
Packaging Marking:
Packing Group: O51
Packaging Methods: Small open steel drums; ordinary wooden crates outside of ampoule bottles; threaded-mouth glass vials, iron caps Pressure mouth glass bottles, plastic bottles or metal barrels (cans) outside the ordinary wooden box.
Transportation notes: Railway transportation should be strictly in accordance with the Ministry of Railways "Rules for the Transportation of Dangerous Goods" in the dangerous goods assembly table for assembly. Transportation vehicles should be equipped with appropriate varieties and number of fire-fighting equipment and leakage emergency treatment equipment. In summer, it is better to transport in the morning and evening. The tanks (tanks) used in transportation should have grounding chains, and the tanks can be equipped with hole dividers to reduce the static electricity generated by vibration. It is strictly prohibited to mix and transport with oxidizing agent, acid, alkali, edible chemicals and so on. During transportation, it should be protected from exposure to sun, rain and high temperature. It should be kept away from fire, heat source and high temperature area when stopping in transit. The exhaust pipe of the vehicle transporting the item must be equipped with a fire stopping device, and it is prohibited to use mechanical equipment and tools that are easy to generate sparks for loading and unloading. Road transportation should be in accordance with the prescribed route, do not stop in residential areas and densely populated areas. Railroad transportation should be prohibited when slipping. It is strictly prohibited to use wooden ships, cement ships bulk transportation.
Part 15: Regulatory Information
Regulatory information: Regulations on the Safe Management of Chemical Dangerous Goods (issued by the State Council on February 17, 1987), Rules for the Implementation of the Regulations on the Safe Management of Chemical Dangerous Goods (Chemistry and Labor Development [1992] No. 677), Provisions on the Safe Use of Chemicals in the Workplace ([1996] Ministry of Labor and Development No. 423) and other laws and regulations for the safe use, production, storage, and disposal of chemical hazardous materials, as well as for the safe use, production, storage, and storage of chemical hazardous materials. Regulations for the safe use of chemical hazardous substances, production, storage, transportation, loading and unloading have been made accordingly; classification and marking of commonly used hazardous chemicals (GB 13690-92) will be classified as Category 3.2 flash point flammable liquids; classification of toxic substances, classification and product name number (GA 57-93), the substance is the fourth category of B-class organic poisons.
Part 16: Other Information
Reference:
Department of filling in the form:
Data review unit:
Revision instructions:
Other information: