Acrylic Acid

Acrylic Acid

CAS Number: 79‑10‑7

Synonyms:Prop‑2‑enoic acid

Chemical Formula:C₃H₄O₂

Molecular Weight:72.06 g/mol

Product Introduction

A colorless to slightly yellow liquid with an acrid odor. A reactive unsaturated carboxylic acid used for polymer production (acrylates, superabsorbents), resin synthesis, coatings, and water treatment chemicals.

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Physical & Chemical Properties

Property Value
Appearance Clear to pale-yellow liquid above 13 °C; ice-like below melting point
Odor Pungent, acrid
Density @ 20 °C ≈1.051 g/cm³
Melting Point ~13–14 °C
Boiling Point ~139–141 °C (literature varies)
Vapor Pressure @ 20 °C ~3–5 mm Hg (≈4 mm Hg)
Solubility Completely miscible in water, alcohols, ethers; corrosive to metals
Flash Point ~48 °C (closed)
pKa ~4.25

Applications

  • Acrylic polymers: production of superabsorbents, coatings, adhesives, sealants
  • Chemical intermediate: for esters, resins, water treatment additives

Safety & Handling

  • Flammable (GHS H226), corrosive causing severe skin/eye damage (H314), respiratory irritant (H335). Toxic to aquatic life (H410). LD₅₀ ~>192 mg/kg (rat/oral). Use PPE, fume hood, vapor suppression inhibitors, store cool (<15 °C), ventilated.

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