ACRYLIC ACID (AA)

Product catalog summary

Specifications
Acrylic Acid (AA), also known as 2-Propenoic acid, is specified as a clear liquid at temperatures above 13°C. It has a maximum color of 10 APHA and a purity of at least 99.5% as determined by gas chromatography. The water content should not exceed 1000 ppm, and the dimer content is limited to 2000 ppm. The inhibitor content, specifically Monomethyl Ether of Hydroquinone (MEHQ), should be between 180 to 220 ppm.

Handling and Safety
It is crucial to avoid localized overheating above 25°C to prevent hazardous exothermic polymerization. Acrylic acid should not be stored for long periods due to dimer formation, which occurs at approximately 100 ppm daily at room temperature. The product remains within specifications for one month post-delivery.

Applications
Acrylic acid is used in a variety of applications including hydrosoluble agents, detergent auxiliaries, organic synthesis, copolymer emulsions for paints and inks, dispersions for textiles and adhesives, cleaning products, plastics, synthetic resins, and rubbers.

Main Physical Properties
The molecular weight is 72 g/mol, with a boiling point of 141°C and a freezing point of 13°C. It has a specific gravity of 1.05 g/mL at 20°C, a refractive index of 1.422, and a viscosity of 1.22 mPa.s. Acrylic acid is infinitely soluble in water at 20°C. Other properties include a specific heat of 2.05 kJ/kg°C, a latent heat of vaporization of 634 kJ/kg, and a heat of polymerization of 1077 kJ/kg. The flash point is 48.5°C, and the auto-ignition temperature is 438°C.

Packaging and Storage
Acrylic acid is delivered in stainless steel road tank cars or containers ranging from 25000 to 36000 liters. It should be stored at 15 to 25°C, away from light, and under an air atmosphere with at least 5% oxygen to activate the stabilizer. If crystallization occurs, it can be thawed safely by circulating tempered water up to 35°C through heating coils, ensuring proper mixing for even distribution of oxygen and inhibitor.

Catalog excerpts

ACRYLIC ACID (AA) 2-Propenoic acid CHEMICAL FORMULA Clear liquid Water content Dimer content (ex works) Inhibitor content (MEHQ) Appearance (at > 13°C) Colour (APHA) Purity HANDLING AND SAFETY ADVISES We advise you to read carefully the safety data sheet.

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ACRYLIC ACID (AA) 2-Propenoic acid Avoid any localized overheating of the acrylic acid above 25°C, a too high temperature could cause exothermic polymerization and can be extremely hazardous. For more detailed information, please consult the brochure “SAFE HANDLING AND STORAGE OF ACRYLIC ACID” produced by the European Basic Acrylic Monomer Manufacturers Association (EBAM). Acrylic acid should not be stored for excessive periods, because of the irreversible formation of dimers (approximately 100 ppm daily at room temperature). Under these conditions, the product shall stay within specifications...

Open the catalog to page 2

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