416010

Poly(acrylic acid, sodium salt) solution

average M_w ~1,200, 45 wt. % in H₂O

• Synonym(s): PAA, Sodium polyacrylate
• Linear Formula: [CH₂CH(CO₂Na)]_n
• CAS Number: 9003-04-7
• MDL number: MFCD00147949
• UNSPSC Code: 12162002
• PubChem Substance ID: 24866052
• NACRES: NA.23

Properties

• form: viscous liquid
• mol wt: average M_w ~1,200
• concentration: 45 wt. % in H₂O
• refractive index: n20/D 1.43
• density: 1.32 g/mL at 25 °C
• SMILES string: [Na]OC(=O)C=C
• InChI: 1S/C3H4O2.Na/c1-2-3(4)5;/h2H,1H2,(H,4,5);/q;+1/p-1
• InChI key: NNMHYFLPFNGQFZ-UHFFFAOYSA-M

Description

Application

Poly(acrylic acid, sodium salt) solution has been used to study the mechanism of formation of supramolecularaggregates of polyacrylic acid(PAA) in the presence of Fe(lll). This supramolecular association traps all Fe(lll) and prevents the precipitation of Fe (OH)₃.The chelation capacity of PAA can be exploited to inhibit the precipitation ofhematite and other iron oxides.

Itcan be used as a draw solute in forward osmosis process due to its flexibilityin structural configuration and high solubility in water. They can be preferredover conventional ionic salts as they can produce comparable water flux andmuch lower reverse leakages.

It can also be used to study the effect of the molecular weight of PAAon crystal nucleation and the growth of CaCO₃ during thecrystallization process.

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves