MATERIAL PROFILE / Individual substance
CAS: 6606-59-3
Function: Hydrophobic dimethacrylate crosslinker for reactive and photopolymer systems
Compare this material →This material’s published information has not yet been verified by a human reviewer.
Human verification concerns the stated information and scope. It is separate from an EcoSafe score, certification or safety approval.1,6-Hexanediol dimethacrylate is a hydrophobic, difunctional monomer for crosslinked reactive systems. Supplier applications include photopolymer products, coatings, inks and adhesives; the Evonik and Polysciences documents describe different stabilized grades.
Chemistry: 1,6-Hexanediol dimethacrylate
Listed supplier: Multiple suppliers · named grade references
Chemical identity only; purity, grade and supplier composition require separate documentation.
Identity snapshot: 2026-11-01 UTC.
CAS identity reference ↗Source-linked research · awaiting human review · 2026-11-02
HDDMA crosslinks free-radical reactive systems. Evonik’s TDS identifies photoresists and photopolymer plates, while Kowa describes UV/electron-beam curing and anaerobic adhesives. Medical or dental use requires separate exact-grade qualification.
Relevant application markets are photoresists, printing plates, coatings, inks and adhesives. Kowa lists automotive/plastic coatings and UV inkjet inks. No market-size number or market share has been adopted, and data for hexanediol diacrylate have been excluded because it is a different chemical.
The supplied documents do not establish renewable origin or an overall environmental advantage. Radiation curing is an application technology, not a green certification for this monomer or finished product. The supplied Polysciences grade has irritation and sensitization hazards, and inhibitor choice, exposure and finished-formulation testing still matter.
The supplied Polysciences SDS classifies skin irritation (H315), eye irritation (H320) and skin sensitization (H317).
Polysciences 23672 min. 98% SDS, issue 07-Oct-2021; obtain the current exact-grade SDS for Evonik procurement.
Read the source and complete SDS ↗16 of 16 defined fields are recorded with a source. This measures structured information currently on this site, not the completeness of every linked PDF. Missing fields remain in the denominator.
Coverage is separate from scientific accuracy, human verification and EcoSafe assessment. Molecular fields may not apply to a grade or family; they are not filled from another material to increase its score.
| Core field | Recorded information |
|---|---|
| Chemical name | 1,6-Hexanediol dimethacrylate Source ↗ |
| CAS number | 6606-59-3 Source ↗ |
| Synonyms | HDDMA; hexamethylene dimethacrylate; 1,6-hexanediol dimethacrylate. Source ↗ |
| Molecular formula | C14H22O4 Source ↗ |
| Molecular weight | 254.32 Source ↗ |
| IUPAC name | 6-(2-methylprop-2-enoyloxy)hexyl 2-methylprop-2-enoate Source ↗ |
| PubChem CID | 81080 Source ↗ |
| Identity sources | https://pubchem.ncbi.nlm.nih.gov/compound/81080 Source ↗ Source reference recorded for this record's scope; source freshness is a separate review. |
| Uses | Hydrophobic crosslinker for photoresists, photopolymer plates and dental compounds; broader supplier applications include UV/EB curing and anaerobic adhesives. Source ↗ Dental applications are supplier examples, not approval of every grade as a medical device ingredient. |
| Hazards | The supplied Polysciences SDS classifies skin irritation (H315), eye irritation (H320) and skin sensitization (H317). Source ↗ Polysciences 23672 min. 98% SDS, issue 07-Oct-2021; obtain the current exact-grade SDS for Evonik procurement. |
| Appearance | Clear, colourless to yellowish liquid; ester-like odour (Evonik grade). Source ↗ |
| Density | 0.998 g/cm³ Source ↗ 20 °C · DIN 51757 · Typical |
| Melting point | 2.11 °C Source ↗ Solidification point, as printed; pressure not stated · OECD 102 · Typical |
| Boiling point | Approximately 190 °C Source ↗ Pressure “1,013 hPa” as printed; supplier benchmark needs confirmation · DIN 53171 · Typical |
| Solubility | 23 mg/L Source ↗ In water at 20 °C; supplier own study · OECD 105 · Typical |
| SDS/TDS | 1,6-Hexanediol dimethacrylate — Polysciences SDS Source ↗ Exact supplier/grade reference; regional applicability and current issue require review. |
Evonik VISIOMER 1,6-HDDMA: supplier example with its own specification and benchmark physical data. Page 1 specifications are distinguished from page 2 benchmark physical data, which the supplier explicitly excludes from the specification. Degree of purity is ≥93.0%; reactive ester content is separately ≥98%. MEHQ stabilization is 200 ± 20 ppm. The Polysciences SDS describes a separate grade and must not be used to certify Evonik composition. No pH or ambiguous unitless Polysciences flash-point result has been imported. The only viscosity in this TDS is kinematic: 6.33 mm²/s at 20 °C (DIN 51562). Dynamic viscosity is not provided and has not been calculated.
| Property | Value | Conditions / method |
|---|---|---|
| Kinematic viscosity | 6.33 mm²/s Typical | Kinematic viscosity at 20 °C DIN 51562 Source ↗ |
| Refractive index | 1.459 Typical | 20 °C; wavelength not stated Not stated Source ↗ |
| Solubility | 23 mg/L Typical | In water at 20 °C; supplier own study OECD 105 Source ↗ |
| Boiling point | Approximately 190 °C Typical | Pressure “1,013 hPa” as printed; supplier benchmark needs confirmation DIN 53171 Source ↗ |
| Density | 0.998 g/cm³ Typical | 20 °C DIN 51757 Source ↗ |
| Purity / assay | ≥93.0 % Specification | VISIOMER 1,6-HDDMA; degree of purity, distinct from reactive ester content ≥98% M2-85 (GC) Source ↗ |
| Water content | ≤0.50 % Specification | VISIOMER 1,6-HDDMA; maximum water content M3, Karl Fischer Source ↗ |
| Flash point | 117 °C Typical | Pensky-Martens closed cup ASTM D93 Source ↗ |
| Melting / softening behavior | 2.11 °C Typical | Solidification point, as printed; pressure not stated OECD 102 Source ↗ |
Archived copies are dated references. Confirm the latest document for your supplier, grade and region.
SDS · Polysciences
Issue 10/07/2021; version 1.0; footer 02/27/2026 · USA / English
Polysciences 23672, min. 98%. CAS is explicit. Separate supplier/grade from Evonik; the footer is not treated as a new issue date.
Open archived copy ↗ · Download · Supplier source ↗TDS · Evonik Operations GmbH
June 2020 · English; supplier in Germany
CAS explicitly matches. Evonik VISIOMER 1,6-HDDMA specification and benchmark data apply to this stabilized grade, not to the Polysciences product.
Open archived copy ↗ · Download · Supplier source ↗Confirm grade, composition, current availability and production location directly with the supplier.
Supplier-listed identity match; purity, additives, performance and origin require separate confirmation.
Supplier reference ↗Supplier-listed identity match; purity, additives, performance and origin require separate confirmation.
Supplier reference ↗Röhm · Methacrylate monomers / acrylic building blocks
A family research lead, not a confirmed supplier of this exact substance.
Family reference ↗Identity data and category placement do not establish safety, suitability or environmental performance. Obtain current grade-specific documentation.
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Library source check: November 2, 2026. Sources may require supplier access.