DI-P-METHYLBENZYLIDENESORBITOL, CAS No. 81541-12-0

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81541-12-0

Catalog No. EBD3072612

CAS 81541-12-0

Name DI-P-METHYLBENZYLIDENESORBITOL

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Basic Information

Synonyms: D-GLUCITOL,1,3:2,4-BIS-O-(4-METHYLPHENYL)METHYLENE- D-GLUCITOL,1,3:2,4-BIS-ORTHO-((4-METHYPHENYL)METHYLENE)- (1R)-1-[(1R,2S,4R,6R,9S)-4,9-BIS(4-METHYLPHENYL)-3,5,8,10-TETRAOXABICYCLO[4.4.0]DEC-2-YL]ETHANE-1,2-DIOL DI-P-METHYLBENZYLIDENESORBITOL 1,3:2,4-bis-o-(4-methylbenzylidene)-d-sorbitol 1,3:2,4-bis-o-(p-methylbenzylidene)-d-sorbitol 1,3:2,4-di(4-methylbenzylidene)-d-sorbitol gelallmd gelallmd-cm30g (1R)-1-[(2R,4S,4aR,6S,8aR)-2,6-bis(4-methylphenyl)tetrahydro[1,3]dioxino[5,4-d][1,3]dioxin-4-yl]ethane-1,2-diol(non-preferredname)

Molecular Formula: C22H26O6

Molecular Weight: 386.44

Categories: Materials Chemistry > Polymers and Macromolecular Materials > Polymer Additives Functional Chemicals > Consumer & Industrial Chemicals > Industrial Auxiliaries

Product Description:

1,3:2,4-Di-O-(4-methylbenzylidene)-D-sorbitol (MDBS) is a sorbitol-based acetal derivative, specifically a bis(4-methylbenzylidene) compound. It is a white, crystalline powder with the molecular formula C22H26O6. This compound is primarily known as a highly effective clarifying and nucleating agent for polypropylene (PP) and other polyolefins. It functions by forming a three-dimensional nanofibrillar network within the polymer melt upon cooling. This network acts as a nucleating site, promoting the formation of smaller, more uniform spherulites, which significantly increases the crystallization temperature and rate. The result is improved optical properties (higher clarity and reduced haze), enhanced stiffness, faster cycle times in processing, and better dimensional stability of the final plastic products. MDBS is a key industrial additive in the production of transparent rigid and flexible PP packaging, household items, and medical devices. Its performance is superior to earlier sorbitol-based clarifiers. It is considered a non-toxic additive for food-contact applications in many regions, following relevant regulatory approvals.

Physical Properties

Boiling Point: 587.4°Cat760mmHg

Flash Point: 309°C

Density: 1.23g/cm3