Dimethyldibenzylidene sorbitol
CAS 135861-56-2
EC 603-934-2
Formula C24H30O6
MW 414.491 g/mol
Polymers & Resins Plastics & PolymersPrinting & PackagingAutomotive Rheology ModificationAntioxidant & Stabilizer
Description
Dimethyldibenzylidene sorbitol (DMDBS) is a sorbitol-based acetal compound registered under CAS 135861-56-2 and EC 603-934-2. It is commercially available under trade names including Millad 3988 and Millad 3988i. No E-code designation applies to this substance.
In polypropylene processing, DMDBS functions as a nucleating and clarifying agent, accelerating crystallisation to produce finer spherulite structures that increase optical clarity and stiffness. It also serves as a rheology modifier in gel systems and coatings, forming hydrogen-bonded fibrillar networks that control flow behaviour at low concentrations.
DMDBS is supplied as a white to off-white solid and is subject to REACH registration requirements within the European Economic Area. Procurement teams should confirm grade suitability against application-specific standards, particularly for food-contact packaging end uses where relevant EU migration regulations apply. Standard packaging formats vary by supplier volume tier.
In polypropylene processing, DMDBS functions as a nucleating and clarifying agent, accelerating crystallisation to produce finer spherulite structures that increase optical clarity and stiffness. It also serves as a rheology modifier in gel systems and coatings, forming hydrogen-bonded fibrillar networks that control flow behaviour at low concentrations.
DMDBS is supplied as a white to off-white solid and is subject to REACH registration requirements within the European Economic Area. Procurement teams should confirm grade suitability against application-specific standards, particularly for food-contact packaging end uses where relevant EU migration regulations apply. Standard packaging formats vary by supplier volume tier.
Physical Properties
| Melting Point | 267.1-267.9 °C |
| Boiling Point | 611.6±50.0 °C(Predicted) |
| Density | 1.195 |
| Appearance | 1,3:2,4-Bis(3,4-dimethylobenzylideno) sorbitol is a white to off-white solid. |
| Color | White to Off-White |
| Form | Solid |
| Water Solubility | 40-47600ng/L at 20℃ |
| Vapor Pressure | 0-0Pa at 25℃ |
| Log P | 2.78-3.4 at 22-30℃ |
Trade & Regulatory
| HS Code | 2933.39.9200 |
Other Names
DMDBSJADEWIN3HRnta-3988Millad 3988Millad 3988IMillad 8C41-10Nucleating Agent 3988Nucleating agent DY-3
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