مرجع مواد شیمیایی ایران
اطلاعات عمومی اکریل آمید
  • نام شیمیایی

    • اکریل آمید

    • Acrylamide

  • مترادف ها
    • Prop-2-enamide ; Acrylic amide

  • CAS
    79-06-1
  • فرمول مولکولی
    C3H5NO
  • جرم مولکولی
    71/08
  • EINECS
    201-173-7
  • ICB Number
    ICB 4667
  • شکل و حالت فیزیکی
    جامد کریستالی سفید
  • نقطه ذوب
    82-86 °C
  • نقطه جوش
    125 °C at 25 mm Hg(lit.)
  • دانسیته
    1/322 g/cm3
  • فشار بخار
    0/03 mm Hg ( 40 °C)
  • دانسیته بخار
    2/45 (vs air)
  • ضریب شکست (n20/D­­)
    1/46
  • نقطه اشتعال
    138 °C
  • حلالیت در آب
    216 g/100 mL
  • شماره CAS
    79-06-1
  • شماره ثبت تجاری (RBN)
    605349
  • شماره مرک (Merck)
    14,129
  • NIST Chemistry Reference
  • EPA Substance Registry System
  • مراجع MSDS
  • ارائه دهنده
    زبان
  • انگلیسی
  • انگلیسی
  • Chemical Properties
    • White crystals

  • General Description
    • A solution of a colorless crystalline solid. Flash point depends on the solvent but below 141°F. Less dense than water. Vapors heavier than air. Toxic oxides of nitrogen produced during combustion. Used for sewage and waste treatment, to make dyes and adhesives.

  • Air & Water Reactions
    • Acrylamide is very soluble in water. The solvent is not necessarily water soluble.

  • Reactivity Profile

    ACRYLAMIDE SOLUTION reacts with azo and diazo compounds to generate toxic gases. Flammable gases are formed with strong reducing agents. Combustion generates mixed oxides of nitrogen (NOx). Spontaneous, violent polymerization occurs at the melting point (86°C of the undissolved solid [Bretherick, 5th ed., 1995, p. 428].

  • Synthesis
    • 1. Acrylonitrile sulfate hydration; Acrylonitrile and water is hydrolyzed into acrylamide sulfate in the presence of sulfuric acid and then treated neutralized liquid ammonia to give ammonium sulfate and acrylamide: The reaction products further undergoes filtering and separation. Crystallize the filtrate, dry to obtain the final product. The disadvantage of this method is by-producing a large number of low-value, low fertilizing efficacy-ammonium sulfate and causing serious sulfuric acid corrosion and pollution. This method can produce by-products of 2280 kg ammonium sulfate in per tons of acrylonitrile.Material consumption amount: Acrylonitrile (100%) 980kg / t, sulfuric acid (100%) 200kg / t, ammonia (100%) 700kg / t. 2. Direct hydration of acrylonitrile: acrylonitrile is directly hydrated by water with copper being the catalyst at 85-125 °C and 0.3-0.4MPa pressure. The yielding aqueous solution of acrylamide (containing only small amounts of by-products) can be directly sold as a finished product. This method avoids acrylamide dust pollution and is advantageous for labor protection for using aqueous solution. Reference Product Specifications: appearance: white flakes or powder. With first-grade product containing content ≥95%; Secondary-grade content ≥90%; grade III content ≥85%. 3. Enzyme catalysis; at room temperature transfer the acrylonitrile solution into the fixed-bed reactor containing bacteria catalyst; after the reaction, 100% of acrylonitrile is converted into acrylamide. After isolation and even without the necessity of refining and concentration, we can get the acrylamide industrial products. 4. Concentrated sulfuric acid hydration method: mixture containing sulfate, phenothiazine (polymerization inhibitor), and water is added to the reactor; stir slowly with dropping acrylonitrile After the addition is completed, raise the temperature to 95 ~ 100 °C, keep the temperature for 50 min. Cool to 20 ~ 25 °C, dilute with an appropriate amount of water, neutralize with sodium carbonate, filtrate to obtain aqueous acrylic acid solution. Further cool and crystallize, separate, dry to obtain the completed products. 5. Catalytic hydration method; acrylonitrile and water undergoes liquid phase hydration in the presence of copper-based catalyst; It is generally used for continuous production with the reaction temperature being 85 ~ 120 °C, reaction pressure being 0.29 ~ 0.39 MPa, feed concentration of 6.5%, airspeed being 5 L/ h, the conversion rate being 85%, and selectivity being about 95% and the concentration of acrylamide in the reaction being 7% to 8%. Aqueous solution obtained by this method may be directly used as the product for sale.

  • Usage
    • 1. It can be used as a monomer of polyacrylamide. Its polymer or copolymer is used as chemical grouting materials, soil conditioners, flocculants, adhesives and coatings. 2. Polyacrylamide, when used as a kind of additive, can improve the oil recycling efficiency. When used as flocculants, it can be used for sewage treatment. It can also be used as a paper strength agent. 3. Acrylamide is the most important products in acrylamide and methacrylamide-based products. Since its application in industry in 1954, the demand gradually increase. It is mainly used for the preparation of water soluble polymers which can be used as additives to improve oil recovery; as a flocculant, thickening agents, and paper additives. A small amount of acrylamide is introduce the hydrophilic center into the lipophilic polymer to improve the viscosity, increase the softening point and improve anti-solvents ability of resin, and can aso introduce a center for the coloring property of dye. Acrylamide is also often used as a component of the photopolymer. For the vinyl polymer, its crosslinking reaction can take advantage of this kind of reactive amide groups. Acrylamide can co-polymerizze with certain monomers such as vinyl acetate, styrene, vinyl chloride, vinylidene chloride, and acrylonitrile to obtain a polymer with a variety of applications. The main application areas: (1) used for the oilfield; the materials can be used in oilfield injection of wells for adjustment of the injection profile. Mix this product with initiator, and deaerator and inject into the high permeability layer part of water wells. This will lead the formation of high- viscosity polymer unearth of the stratum. This can plug the large pore, increase the swept volume of oil, and enhance the oil recovery. In addition, the product polymer or copolymer can be used for tertiary oil recovery, fracturing, water shutoff, drilling mixing process and chemical grouting. (2) It can be used as flocculants. Its partially hydrolyzed product and its graft copolymer of methyl cellulose can be used in wastewater treatment and sewage treatment. (3) Soil conditioner; using the hydrolyzed product as soil amendments can aggregate soil and can improve air circulation, water permeability and water retention. (4) Modification of fiber and resin processing; using acrylamide for carbamylation or graft polymerization can improve the resin arrangement of a variety of fiber containing synthetic fiber, as well as for warp and printing paste in order to improve the basic physical properties of fabrics as well as preventing wrinkle, shrink and keeping a good hand feeling. (5) It can be used as paper enhancer; copolymer of acrylamide and acrylic acid or partial hydrolysis products of polyacrylamide can be used as paper strength reinforcing agent for either replacing or combining with starch, and water-soluble amino resin. (6) it can be used as an adhesive agent including glass fiber adhesive agent with the combination of phenolic resin and polyacrylamide solution, as well as pressure sensitive adhesive combined with synthetic rubber. 4. It is the raw material for producing polyacrylamide and related products. 5. It can be used as the monomer of polyacrylamide. Its polymer or copolymer can be used as chemical grouting materials, soil conditioners, flocculants, adhesives and coatings. Polyacrylamide, as an additive, can improve oil recovery. As a kind of flocculants, it can be used for waste water treatment as well as paper strength enhancer can. It is the raw material for producing polyacrylamide and related products. It can also used for determining the relative molecular weight of acid.

  • Health Hazard

    Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.

  • Preparation products

    Acrylic acid-->Carbomer 940-->Butyl acrylate-->Ethyl acrylate-->Poly(acrylamide)-->Taurine-->Chitosan-->Moclobemide-->TRIS(2-AMINOETHYL)AMINE-->Viscosity increaser-->acrylic resin coating finish-->modified acrylic resin emulsion J-->binding agent for screen printing-->amphoteric polyacrylamide-->ACRYLATES COPOLYMER-->binding agent SH-821-->deepening agent TR in pigment dying-->super absorbent resin synthesized by microwave cation ion radiation-->N-Methylolacrylamide -->binding agent RF type Dongfeng-->new fixing agent-->PR-I retanning agent-->fltrate reducer JST501-->modified acrylic resin emulsion BN-->high-hydroscopic resin (2)-->Polyacrylamide dry powder,cationic-->Polyacrylamide dry powder,non-ionic-->3-Hydrazinylpropanamide -->Ca-copolyacrylate-->Polyquaternium-7-->N,N'-Methylenebisacrylamide-->high-hydroscopic resin (3)-->methylene polyacrylamide-->3-(3-amino-3-oxopropyl)-2-[[4-(diethylamino)phenyl]azo]-6-ethoxybenzothiazolium chloride -->thermofusion dyeing leveler PA-->WPT-S silicone modified water proof. fatliquoring and retanning agent-->5,6-DIHYDROURACIL-->leveler CGK-->dimethyldiallyl ammonium chloride acrylamide copolymer-->Cation flocculant

  • Raw materials

    Ammonia-->Acrylonitrile-->Acrylic acid-->Carbomer 940-->DOYLE DIRHODIUM CATALYST-RH2(4S-MEOX)4-->Phenothiazine-->NS-398