Hydroxyl-functional methacrylate (mixed isomers) for polymers and coatings
Hydroxypropyl Methacrylate
Hydroxypropyl Methacrylate (HPMA, CAS 27813-02-1) is a hydroxyl-functional methacrylic monomer supplied as a mixture of isomers. It provides hydroxyl functionality for cross-linking in acrylic systems and is widely used in coatings, adhesives, polymer modification and specialty applications.
DECHEM supplies HPMA in the following commercial grades: 97 / 98. The grade number refers to the minimum monoester content; the total ester purity is specified separately on the Technical Data Sheet and on every Certificate of Analysis.
HPMA (CAS 27813-02-1) is covered by a REACH registration held by DECHEM GROUP LTD.
Typical Specifications
DECHEM supplies the following commercial grades. "Monoester" is the grade-defining monoester content; "Purity" is the total ester content — they are separate metrics and are both reported on every Certificate of Analysis. The grade number identifies the document set; the specification printed in the table is the specification of the Technical Data Sheet for that grade.
| Parameter | 97 | 98 |
|---|---|---|
| Grade | 97 (Premium Grade) | 98 (Premium Grade) |
| Monoester (w%) | ≥ 97% | ≥ 98% |
| Purity (w%) | ≥ 99% | ≥ 99% |
| Water (w%) | ≤ 0.1% | ≤ 0.10% |
| Acidity (w%) | ≤ 0.1% | ≤ 0.10% |
| Colour (Hazen) | ≤ 10 | ≤ 10 |
| Inhibitor (MEHQ) | 200 ± 20 ppm | 200 ± 20 ppm |
Note: on the 2-HEA Technical Data Sheets the file names and the printed grade numbers do not always coincide. The values above are the values printed in each document. We will confirm the grade designation for your order together with the quotation and the Certificate of Analysis.
Storage and Handling
Store in original containers between 15 °C and 25 °C, tightly closed, protected from heat and direct sunlight. Maintain oxygen in the vapour space. Do not store under nitrogen or inert gas — the MEHQ inhibitor requires dissolved oxygen to remain effective. Keep containers tightly closed and protected from heat and sunlight.
Values are typical and are confirmed by the Certificate of Analysis issued for each lot. The official TDS and the lot COA always govern the contract.
Technical Parameters
| Parameter | Value |
|---|---|
| CAS No. | 27813-02-1 |
| EC No. | 248-666-3 |
| HS code | 29161400.90 |
| Molecular formula | C7H12O3 |
| Molecular weight | 144.17 |
| Density (g/cm³) | 1.027 |
| Boiling point | 87 °C (6.66 kPa) |
| Melting point | -17 °C |
| Flash point | 104 °C (open) / 96 °C (closed) |
| Viscosity (20 °C) | 8.9 mPa·s (20 °C) |
| Appearance | Colorless to light yellow transparent liquid, no mechanical impurities |
| Shelf life | 12 months from the manufacturing date in unopened original containers |
| Monoester (w%) (97) | ≥ 97% |
| Purity (w%) (97) | ≥ 99% |
| Water (w%) (97) | ≤ 0.1% |
| Acidity (w%) (97) | ≤ 0.1% |
| Colour (Hazen) (97) | ≤ 10 |
| Inhibitor (MEHQ) (97) | 200 ± 20 ppm |
| Monoester (w%) (98) | ≥ 98% |
| Purity (w%) (98) | ≥ 99% |
| Water (w%) (98) | ≤ 0.10% |
| Acidity (w%) (98) | ≤ 0.10% |
| Colour (Hazen) (98) | ≤ 10 |
| Inhibitor (MEHQ) (98) | 200 ± 20 ppm |
Applications
- Acrylic copolymers — hydroxyl functionality for cross-linkable systems
- UV/EB curing coatings — reactive diluent improving flexibility and adhesion
- Adhesives and sealants — enhanced durability and bonding
- Dental and biomedical polymers — high-purity grades for specialty uses
- Construction chemicals — reactive polymer intermediates
Packaging
| Package Type | Net Weight | Note |
|---|---|---|
| Polyethylene plastic drum | 200 kg net | Standard export drum |
| IBC tote | 1,000 kg net | For partial bulk orders |
| Teflon lined iron drum | 200 kg net | Available on request |
| ISO tank | 20–24 MT net | For full bulk shipments |