Acrylic Acid 80%

1. Basic information

- Molecular formula: CH₂=CHCOOH (acrylic acid)

- CAS：79-10-7

- Appearance: colorless and transparent liquid, pungent odor

- pH: approximately 2.5 (strongly acidic)

- Polymerization inhibitor: MEHQ (4-methoxyphenol) 150–170 ppm, prevent self-polymerization

2. Physical Properties (at 20℃/25℃)

- Purity: 79.5–81.5 wt% (acrylic acid)

- Moisture: 18.5–20.5 wt%

- Chromaticity: APHA ≤ 10

- Density: 1.046–1.056 g/cm³ (20/4℃)

- Freezing point: approximately -5.5℃ (much lower than pure acrylic acid, which is 13℃, not easy to crystallization in winter)

- Boiling point: approximately 100–105℃

- Flash point: approximately 54℃ (closed cup), flammable

- Explosion limit: 2.4–8.0% (volume)

- Solubility: miscible with water, ethanol, and ether

- Viscosity: approximately 1.2 mPa·s (at 25℃)

- Vapor pressure: 3.8 hPa (20℃)

3. Chemical properties

- Easy to polymerize: rapid homopolymerization/copolymerization under heating, light exposure.

- Easy to esterify: Reaction with alcohols to form acrylic esters (such as methyl ester, ethyl ester, butyl ester, hydroxyethyl ester, etc.)

- Easy to forms salts: forms acrylate salts (sodium/potassium/ammonium salts) with alkalis

- Corrosivity: Strongly acidic, corrosive to metals, rubber, and skin and mucosa

4. Main usages

(1). Superabsorbent Polymer (SAP)

Applications: baby diapers, adult incontinence products, sanitary napkins, agricultural water retention agents

(2). Acrylate monomers - the foundation of coatings, adhesives, and plastics

- Synthesis of methyl acrylate/ethyl acrylate/butyl acrylate

- Downstream:

- Water-based/solvent-based acrylic resin: architectural coatings, automotive paints, wood coatings, industrial anti-corrosion paints

- Acrylic lotion: textile coating, paper coating, non-woven fabric, floor polishing, leather finishing

- Adhesives: pressure-sensitive adhesives, structural adhesives, packaging adhesives, electronic adhesives, medical adhesives

- Plastic modification: acrylic plastics, elastomers, synthetic rubbers

(3). Water treatment chemicals

- Polyacrylic acid (PAA)/polyacrylate sodium (PAAS):

- Scale inhibitor and dispersant: preventing scale formation in circulating water, boiler water, and reverse osmosis membranes

- Flocculant: Wastewater treatment, sludge dewatering, paper white water reuse

- Chelating agent: removes heavy metal ions and stabilizes water quality

(4). Textile and paper making

- Textile: warp sizing, fabric anti-crease finishing, waterproof coating, printing adhesive, dyeing auxiliary

- Paper making: paper strength agent, coating adhesive, pigment dispersant, sizing agent, enhancing paper strength, and water retention

(5). Other industrial applications

- Oil extraction: oil displacement agents to enhance oil recovery

- Daily chemical/pharmaceutical: toothpaste thickener, cosmetic emulsifier, drug carrier, orthopedic bone cement, food preservative

- Building materials: cement water reducer, ceramic additives, sealant, flooring materials

- Leather: tanning agent, finishing agent, hand feel modifier

5. Product Advantages

- Lower cost: Compared with 99.5% high-purity acrylic acid, 80% acrylic acid is more affordable and suitable for small and moderate trials.

- Safety for storage and transportation: low freezing point (-5.5℃), not easy to be crystalized in winter; moderate flash point, lower volatility

- Strong reaction adaptability: It can be directly used for aqueous polymerization, esterification, and salt formation without additional dehydration

- Good stability: containing standard polymerization inhibitor, it does not self-polymerize when stored at suitable room temperature for more than 6 months

6. Storage, Transportation, and Safety

- Packaging: 200L new HDPE drums, IBC drums, ISO TANK transportation

- Storage: Keep in a cool, ventilated, and dark place, at a temperature of 5–30℃. Keep away from sources of ignition, oxidizers, and alkalis

- Safety: High risk of corrosivity. Wear goggles, acid-resistant gloves, and protective clothing. If it splashes on the skin/eyes, immediately flush with plenty of water and seek medical attention

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