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2,2-Dimethylol Propionic Acid
（DMPA）
Category:
2,2-Dimethylol Propionic Acid
Abbreviation：DMPA
Chemical formula：C5H10O4
Molecular weight：134.13
Flash point：220℃
Decomposition temperature：230℃
Melting point：180~190℃
Product appearance: white crystal
Solubility: easily soluble in water, methanol, dimethylformamide, etc., but hardly soluble in acetone, benzene, toluene, etc.
Packaging: 25Kg PE bag
Storage: cool, dry and ventilated
CAS No. :4767-03-7
Product Introduction
◆ Special Performance
DMPA is a multifunctional compound with both hydroxyl and carboxyl groups. It can improve the water solubility and dispersibility of the resin; the introduction of polar groups can improve the adhesion of coatings and the dyeing properties of synthetic fibers. It is widely used in the production of various water-soluble resins, and the resins produced have good heat resistance, water resistance and color stability.
◆ Product Quality Standards
| Product Quality Standards | |
| Quality | Pointer |
| Product Appearance | white crystal |
| Content (wt%) | ≥98.0 |
| Hydroxy value (wt%) | ≥24.8 |
| Acid value (wt%) | ≥34.0 |
| Gray (%) | ≤0.03 |
| Moisture (wt%) | ≤0.3 |
| Melting point (℃) | 180-190 |
| Residual aldehyde (wt%) | ≤0.03 |
| Fe3+ (ppm) | ≤5 |
| Na+ (ppm) | ≤100 |
| K+(ppm) | ≤10 |
◆ Application fields
DMPA is mainly used as chain extender and internal emulsifier of water-based polyurethane; used to prepare water-based polyurethane water-emulsion leather finishing agent; Oxygen resins, water-based alkyd resins, polyurethane elastomers and powder coatings, etc.; used as raw materials for the manufacture of photosensitive resins and liquid crystals; used in the manufacture of magnetic recording materials and their adhesives to produce various recording tapes and magnetic cards, etc.
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