Polyacrylic acid

"Carbomer" redirects here. For the exotic molecules expanded by insertion of two-carbon units, see Carbo-mer.
Poly(acrylic acid)
Names
IUPAC name
Poly(acrylic acid), poly(1-carboxyethylene)
Other names
PAA, PAAc, Acrysol, Acumer, Alcosperse, Aquatreat, Carbomer, Sokalan
Identifiers
ChEBI
ChemSpider
  • none
ECHA InfoCard 100.115.375 Edit this at Wikidata
EC Number
  • 618-347-7
KEGG
UNII
Properties
(C3H4O2)n
Molar mass variable
log P 0.25700[1]
Hazards[2]
GHS labelling:
GHS07: Exclamation mark
Warning
H315, H319, H335
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 0: Exposure under fire conditions would offer no hazard beyond that of ordinary combustible material. E.g. sodium chlorideFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
0
0
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Poly(acrylic acid) (PAA; trade name Carbomer) is a polymer with the formula (CH2-CHCO2H)n. It is a derivative of acrylic acid (CH2=CHCO2H). In addition to the homopolymers, a variety of copolymers and crosslinked polymers, and partially deprotonated derivatives thereof are known and of commercial value. In a water solution at neutral pH, PAA is an anionic polymer, i.e., many of the side chains of PAA lose their protons and acquire a negative charge. Partially or wholly deprotonated PAAs are polyelectrolytes, with the ability to absorb and retain water and swell to many times their original volume. These properties – acid-base and water-attracting – are the bases of many applications.

  1. ^ "Polyacrylic acid_msds". Archived from the original on 2022-02-21. Retrieved 2018-04-23.
  2. ^ "C&L Inventory". echa.europa.eu. Archived from the original on 2021-04-05. Retrieved 2021-12-05.