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Acrylic Acid (99.5%) - China
- Origin
- : India, China
- CAS Number
- : 79-10-7
- HS Code
- : 2916.11.00
Basic Info
- IUPAC Name
- : prop-2-enoic acid
- Molecular Formula
- : C3H4O2
- Molecular Weight (g/mol)
- : 72.0600
- InChIKey
- : NIXOWILDQLNWCW-UHFFFAOYSA-N
- InChI
- : InChI=1S/C3H4O2/c1-2-3(4)5/h2H,1H2,(H,4,5)
- Synonyms & Trade Names
- : ACRYLIC ACID; 2-Propenoic acid; 79-10-7; prop-2-enoic acid; Propenoic acid; Vinylformic acid; Acroleic acid; Ethylenecarboxylic acid; Propene acid; Glacial acrylic acid; Kyselina akrylova; Acrylic acid, glacial; RCRA waste number U008; Acide acrylique; Acido acrilio; DTXSID0039229; J94PBK7X8S; NSC-4765; DTXCID8028; CHEBI:18308
- Purity / Assay (%)
- : ≥97%
- Grade / Quality Level
- : Industrial Grade
- Physical Form
- : Liquid
- Concentration
- : Pure substance
- Appearance / Color
- : Acrid liquid
- Odor
- : Acrid odor and fumes
- Melting Point (°C)
- : 13.5600
- Boiling Point (°C)
- : 142 °C
- Density (g/cm³)
- : 1.0497
- Solubility in Water
- : Miscible with alcohol, and ether
- Signal Word
- : Danger
- UN Number
- : 2218
- GHS Hazard Class
- : Flammable liquids, Acute toxicity, oral, Acute toxicity, dermal, Skin corrosion/irritation, Acute toxicity, inhalation, Hazardous to the aquatic environment, acute hazard, Acute toxicity, oral; acute toxicity, dermal; acute toxicity, inhalation, Serious eye damage/eye irritation, Specific target organ toxicity, single exposure; Respiratory tract irritation, Specific target organ toxicity, single exposure, Specific target organ toxicity, repeated exposure
- H-Statements
- : H226, H302, H312, H314, H318, H332, H335, H400
- P-Statements
- : P210
- REACH Status
- : Registered
- Drug Precursor Status
- : Non-precursor
- Storage Class (GHS)
- : 8
- Storage Conditions
- : Separate from oxidizing materials, peroxides, initiators, acids, and alkalies. Store in cool, dry, well-ventilated location. Outside or detached storage is preferred.
- Industry Usage Tags
- : Plasticizer
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Brief Overview
Acrylic acid is an unsaturated carboxylic acid, with the formula CH2=CHCO2H. This clear and colourless liquid has a characteristic acrid odour. As it contains a polar carboxylic acid functional group, it is able to dissolve in water and is miscible with relatively polar organic compounds such as alcohols, ethers, and chloroform. Acrylic acid is air and water sensitive as it reacts readily with free radicals and electrophilic or nucleophilic agents. It may polymerise in the presence of acids, alkalis, amines, peroxides, and iron salts. Prolonged exposure to heat or exposure of light can also cause polymerisation. If confined, the polymerisation of acrylic acid can lead to explosion even at room temperature. It is corrosive to metals and tissues.
Acrylic acid can be used in the form of free acids, ammonium and alkali salts in many different applications such as thickeners, dispersing agents, flocculants, wetting agents, coatings, textile finishes protective colloids for stabilizing emulsions and polymer dispersions. It readily undergoes additional reactions with a wide variety of organic and inorganic compounds, which makes it a very useful feedstock for the production of many low molecular compounds. For instance, acrylic acid can be used to produce derivatives of propionic acid with water, alcohols, amines, halogens and chlorinated hydrocarbons. It can also react with other substances to produce unsaturated fatty acids, heterocyclic compounds and Diels-Alder addition products.
As it polymerises with explosive violence, it can only be shipped after being stabilised by an inhibitor such as hydroquinone. The removal of the stabilizer is not usually necessary, since its action can be compensated for by adding an excessive initiator.
Manufacturing Processing
The most widely accepted process for making acrylic acid is the vapour phase oxidation of propylene via acrolein, where propylene is a byproduct of ethylene and gasoline production. Typically, Chemical-Grade (CG) propylene is mixed with steam and air to undergo a two-step oxidation where propylene is oxidised to acrolein before further oxidising again to give acrylic acid. These oxidations are done in tubular, fixed-bed reactors where steam is generated by utilising the heat emitted by the exothermic reactions.