Polyacrylic acid

Catalog	ACM9003014-24
CAS	9003-01-4
Structure
Category	Polycarboxylic Antiscalant and Dispersant
Description	Poly(acrylic acid) (PAA or Carbomer) is generic name for synthetic high molecular weight polymers of acrylic acid. They may be homopolymers of acrylic acid, crosslinked with an allyl ether pentaerythritol, allyl ether of sucrose or allyl ether of propylene. In a water solution at neutral pH, PAA is an anionic polymer, i.e. many of the side chains of PAA will lose their protons and acquire a negative charge. This makes PAAs polyelectrolytes, with the ability to absorb and retain water and swell to many times their original volume. Dry PAAs are found in the market as white and fluffy powders.
Synonyms	PAA Polymer
IUPAC Name	prop-2-enoic acid
Molecular Weight	72.06g/mol
Molecular Formula	C3H4O2
Canonical SMILES	C=CC(=O)O
InChI	InChI=1S/C3H4O2/c1-2-3(4)5/h2H,1H2,(H,4,5)
InChI Key	NIXOWILDQLNWCW-UHFFFAOYSA-N
Boiling Point	286 °F at 760 mm Hg (NTP, 1992);286 °F at 760 mm Hg (NIOSH, 2016);141.2 °C;142 °C;141 °C;286°F;286°F
Melting Point	106ºC
Flash Point	61.6ºC
Density	1.09 (30% aq.)
Solubility	greater than or equal to 100 mg/mL at 63° F (NTP, 1992);Miscible (NIOSH, 2016);13.88 M;Miscible with alcohol, and ether;Miscible with ethanol, ethyl ether; soluble in acetone, benzene, carbon tetrachloride;Miscible with chloroform;Miscible with water /1X10+6 mg/L/ at 25 °C;Soluble in methanol, ethanol, dioxane, dimethylformamide, 2-propanol, formamide, ethylene glycol, and acetic acid;Soluble in water;1000 mg/mL;Solubility in water: miscible;Miscible
Appearance	Colorless viscous liquid
Application	Iron & steel factories, chemical fertilizer plants, refineries, and air conditioning systems.
Storage	Storage for one year in shady room.
EC Number	201-177-9;618-347-7;611-106-7;616-286-0
Hazard Codes	C; T; Xi
HS Code	3906909090
LogP	0.25700
pH	3.0-4.5 (1% water solution)
PSA	37.3
Refractive Index	n20/D 1.442
RIDADR	UN 3265 8/PG 3
Risk Statements	R45; R46; R34; R36/37/38
RTECS	AT4680000
Safety Statements	S24/25
Solid Content	30%, 40%, 50%, 60%
Stability	Stable under normal temperatures and pressures.
Storage Conditions	Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Vapor Density	2.5 (NTP, 1992) (Relative to Air);2.5 (Air = 1);Relative vapor density (air = 1): 2.5
Vapor Pressure	3.2 mm Hg at 68 °F ; 5 mm Hg at 81.1° F (NTP, 1992);3 mm Hg (NIOSH, 2016);3.97 mmHg;3.97 mm Hg at 25 °C;Vapor pressure, Pa at 20 °C: 413;3 mmHg;3 mmHg
WGK Germany	3

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