Domestic DMPA 2,2-dimethylolpropionic acid is suitable for waterborne polyurethane system 4767-03-7

Chinese name

2,2-Dimethylolpropionic acid

English name

Dimethylolpropionic Acid or Bis(hydroxymethyl)propionic Acid

Abbreviation: DMPA

Structural formula

molecular formula

C₅H₁₀O₄

molecular weight

134.13

CAS number

4767-3-7

Physical properties

This product is an odorless, free-flowing white crystal, easily soluble in water and methanol, insoluble in benzene, toluene, etc.

Quality indicators

Index	Standard
Appearance	White crystal
Content (%)	≥98
Water (%)	≤0.3
Melting Point (℃)	≥180
Ash (%)	≤0.03
Residue Formaldehyde (%)	≤0.03
Acid Value (mgKOH/g)	380.0-430.0
Hydroxyl Value (mgKOH/g)	810-860
Iron Fe3+ (PPM)	≤5
Potassium K+ (PPM)	≤10
Dissolution Test Acetone-Et3NSolube Experiment	Clear and transparent Transparent

Purpose

DMPA is a group with both hydroxyl and carboxyl groups, a unique multifunctional hindered diol molecule, as a chain extender and hydrophilic agent,
DMPA has been widely used in the production of water-based coatings, water-based adhesives, and water-based leather finishes of water-based polyurethane systems.

Packaging

25Kg plastic bag plus carton or according to user requirements.

storage

Require airtight storage, store in a cool and dry place. When stacking, place a 10cm thick wooden board under it, and keep it 50cm away from the wall.