Acrylamide, AM, Propen Amide, Ethylene Carboxamide, Ethylene Carbox Amide,  79-06-1

Acrylamide, AM, Propen Amide, Ethylene Carboxamide, Ethylene Carbox Amide,  79-06-1

CAS: 79-06-1

Molecular Formula: C3H5NO

Names and Identifiers

Physico-chemical Properties

Risk and Safety

Hazard Symbols	T - Toxic
Risk Codes	R22 - Harmful if swallowed R43 - May cause sensitization by skin contact R45 - May cause cancer R46 - May cause heritable genetic damage
Safety Description	S24 - Avoid contact with skin. S53 - Avoid exposure - obtain special instructions before use.
UN IDs	UN 2074

Upstream Downstream Industry

Nature

This product is colorless and odorless crystal. Highly toxic. Soluble in water, ethanol, acetone, ethyl ether and trichloroethane, toluene-soluble, insoluble in benzene. Stable at room temperature, but suddenly polymerized when melted. Melting Point: 84~86 °c. The boiling point was 87 ℃(0. 26kPa), 125 ℃(3. 3kPa). The relative density was 1. 122. Refractive index 1.460 (calculated).

Preparation Method

1. acrylonitrile direct hydration acrylonitrile and water are directly hydrated in the presence of copper catalyst at 85~125 ℃ and 0.3~0. 4MPa pressure.
2. acrylonitrile sulfuric acid hydration acrylonitrile and water are hydrolyzed in the presence of sulfuric acid to form acrylamide sulfate, and then neutralized with liquid ammonia to form acrylamide solution and ammonium sulfate. After the reactants were separated and filtered, the filtrate was crystallized and dried to obtain a final product.
3. enzymatic method an aqueous acrylonitrile solution was fed into a fixed-bed reactor equipped with a bacterial strain catalyst at room temperature, and 100% of the acrylonitrile was converted to acrylamide by reaction. After separation, an industrial product of acrylamide can be obtained even without purification and concentration.

Use

It is mainly used for the manufacture of water-soluble polymer-polyacrylamide, which can be used as a chemical grouting agent for water plugging and sand fixation in tunnels, oil wells, mines and dams, coagulants for water treatment and drilling mud and preservatives for underwater and underground structures. In addition, also
It can be used as soil modifier, fiber modifier, binder, photosensitive resin crosslinking agent and paper reinforcing agent. In addition, acrylamide can be used as a cross-linking agent for vinyl polymers and to increase the adhesion of lipophilic polymers, increase the softening point of the resin, and increase the solvent resistance.

Safety

• This product is highly toxic. Its vapor can be inhaled through the respiratory tract or absorbed through the skin to cause poisoning. It is mainly harmful to the central nervous system. It also has a strong stimulating effect on the eyes and skin. LD50 for rabbits was 126mg/kg. The maximum allowable concentration in air is 0.3 mg/m3. Production equipment should be closed, the plant should have good ventilation conditions, the operator should wear protective equipment.
• This product is packed with plywood barrel, plastic barrel or fiberboard barrel lined with plastic bag, 20kg or 25kg per barrel. Store in a cool, dry and ventilated place at 20~30 ℃ to prevent rain and sun exposure. Shelf life of one year, according to the provisions of the transport of toxic chemicals