PRODUCT OVERVIEW

Acrylonitrile is a colorless and volatile transparent liquid with sweet taste and slight odor. It is soluble in acetone, benzene, carbon tetrachloride, ether, ethanol and other organic solvents. Slightly soluble in water, forming an azeotropic mixture with water. Relative density o.8060. The freezing point is - 83~- 84 ℃. The boiling point is 77.3 ℃. Flash point - 5 ℃. Refractive index 1. 3888. Viscosity (25 ℃) 0.34mPa. s. Vapor pressure (20 ℃) 11,07kPa. The product vapor can form an explosive mixture with air, and the explosion limit (25 ℃) is 3.05%~(17.0 ± 0.5)% (volume). The pure product is easy to self-polymerize, especially under the condition of hypoxia or exposure to visible light, it is easier to polymerize, and can strongly polymerize in the presence of concentrated alkali.

CHEMICAL PROPERTY

Specification:

physical property

Melting point: - 83.6 ℃
Boiling point: 77.35 ℃
Density: 0.806g/cm3
Saturated vapor pressure: 11.07kPa (20 ℃)
Combustion heat: - 1761.5kJ/mol
Critical temperature: 246 ℃
Critical pressure: 3.54MPa
Octanol/water partition coefficient: 0.25
Ignition temperature: 481 ℃
Refractive index: 1.385
Viscosity (25 º C): 0.34mPa · s [1]
Upper explosion limit (V/V): 17.0% [1]
Lower explosive limit (V/V): 3.0% [1]
Appearance: colorless transparent liquid
Solubility: slightly soluble in water, easily soluble in most organic solvents

CHEMICAL PROPERTY

Acrylonitrile is a colourless, flammable liquid. Its vapours may explode when exposed to an open flame. Acrylonitrile does not occur naturally. It is produced in very large amounts by several chemical industries in the United States, and its requirement and demand are increasing in recent years. Acrylonitrile is a heavily produced, unsaturated nitrile. It is used to make other chemicals such as plastics, synthetic rubber, and acrylic fibres. It has been used as a pesticide fumigant in the past; however, all pesticide uses have been discontinued. This compound is a major chemical intermediate used in creating products such as pharmaceuticals, antioxidants, and dyes, as well as in organic synthesis. The largest users of acrylonitrile are chemical industries that make acrylic and modacrylic fibres and high-impact ABS plastics. Acrylonitrile is also used in business machines, luggage, construction material, and manufacturing of styrene-acrylonitrile (SAN) plastics for automotive, household goods, and packaging material. Adiponitrile is used to make nylon, dyes, drugs, and pesticides.

APPLICATION AREA

Acrylonitrile is used in the production of acrylic fibers, resins, and surface coating; as an intermediate in the production of pharmaceuticals and dyes; as a polymer modifier; and as a fumigant. It may occur in fire-effluent gases because of pyrolyses of polyacrylonitrile materials. Acrylonitrile was found to be released from the acrylonitrile–styrene copolymer and acrylonitrile–styrene–butadiene copolymer bottles when these bottles were filled with food-simulating solvents such as water, 4% acetic acid, 20% ethanol, and heptane and stored for 10 days to 5 months (Nakazawa et al. 1984). The release was greater with increasing temperature and was attributable to the residual acrylonitrile monomer in the polymeric materials.

Acrylonitrile is a raw material used for synthesis of many synthetic fibers such as Dralon and acrylic fibers. It is also used as an insecticide.

Manufacture of acrylic fibers. In the plastics, surface coatings, and adhesives industries. As a chemical intermediate in the synthesis of antioxidants, pharmaceuticals, dyes, surface-active agents, etc. In organic synthesis to introduce a cyanoethyl group. As a modifier for natural polymers. As a pesticide fumigant for stored grain. Experimentally to induce adrenal hemorrhagic necrosis in rats.

PRODUCTION METHOD

At present, the most valuable industrial production is propylene ammoxidation. Propylene, ammonia, air and water are used as raw materials and enter a fluidized bed or fixed-bed reactor at a certain proportion. Under the action of phosphorus-molybdenum-bismuth or antimony-iron catalysts supported by silica gel, acrylonitrile is generated at 400~500 ℃ and atmospheric pressure. Then the unreacted ammonia is removed by dilute sulfuric acid through the neutralization tower, and the gas such as acrylonitrile is absorbed by water through the absorption tower to form an aqueous solution. The aqueous solution is separated from acetonitrile through the extraction tower, and the hydrocyanic acid is removed in the dehydrocyanization tower. After dehydration and rectification, the acrylonitrile product is obtained. The one-way yield can reach 75%, and the by-products include acetonitrile, hydrocyanic acid and ammonium sulfate.

STORAGE AND TRANSPORTATION CONDITIONS

Precautions for operation: strictly seal, provide sufficient local ventilation and overall ventilation. The operation shall be mechanized and automated as much as possible. Operators must receive special training and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter gas mask (full face mask), one-piece rubber anti-gas clothing and rubber oil-resistant gloves. Keep away from kindling and heat sources. Smoking is strictly prohibited in the workplace. Use explosion-proof ventilation system and equipment. Prevent steam from leaking into the air of the workplace. Avoid contact with oxidants, acids and alkalis. Handle with care to prevent damage to packaging and containers. Provide fire fighting equipment and leakage emergency treatment equipment of corresponding types and quantities. Empty containers may contain harmful substances.
Precautions for storage: usually the commodity is added with stabilizer. Store in a cool and ventilated warehouse. Keep away from kindling and heat sources. The storage temperature should not exceed 26 ℃. The package shall be sealed and shall not be in contact with air. It should be stored separately from oxidants, acids, alkalis and edible chemicals. It should not be stored in large quantities or for a long time. Explosion-proof lighting and ventilation facilities shall be adopted. It is forbidden to use mechanical equipment and tools that are easy to produce sparks. The storage area shall be equipped with leakage emergency treatment equipment and appropriate storage materials. The "five double" management system for extremely toxic substances should be strictly implemented.

CONTACT INFORMATION

How to buy from us

Chemwin can provide a wide range of bulk hydrocarbons and chemical solvents for industrial customers.
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Before that, please read the following basic information about doing business with us:

1.security

Safety is our top priority. In addition to providing customers with information about the safe and environmentally friendly use of our products, we are also committed to ensuring that the safety risks of employees and contractors are reduced to a reasonable and feasible minimum. Therefore, we require the customer to ensure that the appropriate unloading and storage safety standards are met before our delivery (please refer to the HSSE appendix in the general terms and conditions of sales below). Our HSSE experts can provide guidance on these standards.

2.Delivery method

Customers can order and deliver products from chemwin, or they can receive products from our manufacturing plant. The available modes of transport include truck, rail or multimodal transport (separate conditions apply).
In the case of customer requirements, we can specify the requirements of barges or tankers and apply special safety/review standards and requirements.

3.Minimum order quantity
If you purchase products from our website, the minimum order quantity is 30 tons.

4.payment
The standard payment method is direct deduction within 30 days from the invoice.

5.Delivery documentation

The following documents are provided with each delivery:

• Bill of Lading, CMR Waybill or other relevant transport document
• Certificate of Analysis or Conformity (if required)
• HSSE-related documentation in line with regulations
• Customs documentation in line with regulations (if required)