Description

1,3:2,4-Bis-o-(p-Ethylbenzylidene)-D-Glucitol is a high-purity, synthetic derivative of D-glucitol (sorbitol) specifically engineered as a highly effective clarifying and nucleating agent for polymer systems. Its primary value lies in its ability to significantly enhance the optical clarity, dimensional stability, and mechanical properties of various polymer matrices by promoting the formation of a uniform microcrystalline structure. This compound is essential for manufacturers in the plastics, packaging, and specialty chemical industries seeking to improve product performance and processing efficiency.

Application

• Polypropylene (PP) Clarification: Primary application as a nucleating agent to dramatically improve the transparency, gloss, and stiffness of clarified polypropylene used in food containers, housewares, and medical packaging.
• Polyethylene (PE) Modification: Used to enhance the crystallization rate and clarity of polyethylene films and molded articles, leading to faster cycle times and improved product appearance.
• Engineering Plastics: Acts as a nucleating agent in polymers like polybutylene terephthalate (PBT) and other polyesters to refine crystal structure, improving mechanical strength and heat deflection temperature.
• Masterbatch Production: Incorporated into high-concentration additive masterbatches for consistent and efficient dispersion into the final polymer melt during processing.
• Food Contact Materials: Suitable for use in polymers intended for food packaging applications, where it helps produce clear, rigid containers that meet relevant safety standards.
• Specialty Films: Improves the optical properties and barrier performance of biaxially oriented polypropylene (BOPP) and cast films for packaging.

Basic Information

Product Name	1,3:2,4-Bis-o-(p-Ethylbenzylidene)-D-Glucitol
CAS No.	79072-96-1
Molecular Formula	C24H30O6
Molecular Weight	414.49 g/mol
Synonyms	1,3:2,4-Bis-O-[(4-ethylphenyl)methylene]-D-glucitol; Dibenzylidene Sorbitol, Ethyl Derivative; DBS Derivative; EBS; Ethyl DBS; 1,3:2,4-Di-O-(4-ethylbenzylidene)-D-sorbitol; Nucleating Agent 3988; Clarifying Agent for PP
EINECS	Contact for details

Quality Control

Our 1,3:2,4-Bis-o-(p-Ethylbenzylidene)-D-Glucitol is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, performance, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, melting point, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after initial opening to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.5%
Melting Point	208 - 212 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.