EcoSafe MaterialsFORMULATORS · CHEMISTS · CONSUMERS
IN DEVELOPMENTSearch chemical names and CAS numbers. Read the documents and review status.Road Map! — Feedback, requests & bugs →
← Materials Library

← All Isosorbide grades

INDUSTRYCoatings
Other industries

Industrial Chemicals

FUNCTIONSynthesis monomer / building block
SYSTEMGrade confirmation needed
APPLICATIONGeneral Coating Ingredients

Isosorbide

CAS 652-67-5 · Product grade

Supplier-reported greener choice
Compare materialsSupplier grades

Formulation developmentConfirm compatibility and loading for the selected supplier grade.

At a glance for your formula

Roquette POLYSORB PS A is an isosorbide grade offered as stabilised solid pellets for polycarbonate and polyurethane development. The supplier lists heat resistance and surface improvement among its functional benefits. Roquette has announced USDA biobased certification for this specific product family. Polymer performance, processing conditions and replacement of another monomer still need application testing; a renewable building block is not automatically interchangeable with an incumbent.

Grade-specific screening values have not been recorded. Consult the selected supplier’s technical reference.

Supplier-grade handling

Review the current supplier SDS for the selected grade and region.

Not assessed
Awaiting human verification

Greener-choice supplier information

These claims describe named supplier grades. Application testing and an EcoSafe assessment remain separate.

POLYSORB PS A (PSA); CAS 652-67-5

Roquette · Supplier-reported · Awaiting human review

Listed claims

  • Manufacturer identifies POLYSORB isosorbide as plant-based
  • PSA technical sheet states purity >=99.5% on dry solids.

Suggested applications

  • Polycarbonate synthesis
  • Polyurethane synthesis
  • Automotive and optical materials
  • Coatings, adhesives, sealants and elastomers
  • Chemical intermediates

Sustainability highlights

  • Manufacturer identifies renewable feedstocks.
  • Roquette reported USDA Certified Biobased Product status for POLYSORB PSA in September 2021
  • current label details should be checked.

Performance highlights

  • Supplier reports heat-resistance benefits.
  • Surface-improvement function is listed.
  • Stabilised pellet grade targets PC/PU processing.

Grade scope & review questions

  • Exact PS A product page and dated manufacturer certification announcement checked on 2026-11-03. Applications are grade-scoped; broad family claims are not imported wholesale.
  • Gap: Current regional SDS/TDS, water and colour specifications needed.
  • Gap: Certification percentage/current validity not established from the announcement alone.
  • Gap: No universal BPA replacement ratio or lower monomer usage established.
  • CAS 652-67-5 identifies the underlying chemical. It does not establish commercial-grade purity, stabilizers, renewable origin or batch composition.

Explore these tags

Supplier references

roquette.com reference 1 ↗roquette.com reference 2 ↗roquette.com reference 3 ↗

Source check: 2026-11-03. Current supplier documents, certification scope and exact grade still require review.

Applications, sustainability & review questions

Roquette POLYSORB PS A is an isosorbide grade offered as stabilised solid pellets for polycarbonate and polyurethane development. The supplier lists heat resistance and surface improvement among its functional benefits. Roquette has announced USDA biobased certification for this specific product family. Polymer performance, processing conditions and replacement of another monomer still need application testing; a renewable building block is not automatically interchangeable with an incumbent.

Original material reference ↗
Full technical properties & recorded evidence

Core data coverage: 25%

4 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.

See the 16 fields and remaining gaps
Core fieldRecorded information
Chemical nameIsosorbide
Source ↗
CAS number652-67-5
Source ↗
SynonymsNot yet recorded / may not apply
Molecular formulaNot yet recorded / may not apply
Molecular weightNot yet recorded / may not apply
IUPAC nameNot yet recorded / may not apply
PubChem CIDNot yet recorded / may not apply
Identity sourceshttps://pubchem.ncbi.nlm.nih.gov/compound/12597
Source ↗
Source reference recorded for this record's scope; source freshness is a separate review.
UsesSynthesis monomer / building block for polycarbonate and polyurethane.. Roquette POLYSORB PS A is an isosorbide grade offered as stabilised solid pellets for polycarbonate and polyurethane development. The supplier lists heat resistance and surface improvement among its functional benefits. Roquette has announced USDA biobased certification for this specific product family. Polymer performance, processing conditions and replacement of another monomer still need application testing; a renewable building block is not automatically interchangeable with an incumbent.
Source ↗
Supplier/source description; applicability remains grade-specific.
HazardsNot yet recorded / may not apply
AppearanceNot yet recorded / may not apply
DensityNot yet recorded / may not apply
Melting pointNot yet recorded / may not apply
Boiling pointNot yet recorded / may not apply
SolubilityNot yet recorded / may not apply
SDS/TDSNot yet recorded / may not apply

How the 16-field coverage score works →

Chemical identity & commercial names

Exact identity and mixture scope require the supplier record.

CAS identity reference ↗

Trade names & supplier grades

Trade names identify supplier offerings. A shared chemical name does not establish interchangeable grades or specifications.

  • POLYSORB PS A (PSA) ↗ · Roquette

    Supplier version of the named chemical; environmental evidence remains grade-specific.

SUPPLIER REFERENCES

Supplier grade comparison

0 scoped references

Compare the named supplier references. A shared CAS does not establish grade equivalence; mixture and test conditions stay separate.

No supplier-grade technical record is available yet. Use the linked supplier documents to establish specifications.

Documents & supplier information

Documents & supplier information

Archived copies are dated references. Confirm the latest document for your supplier, grade and region.

Isosorbide — POLYSORB PS A (PSA); CAS 652-67-5 Specification

Specification · Roquette
Supplier reference; confirm current revision · Confirm supply region and exact grade

Workbook supplier specification/TDS reference. Supplier reference/access link; no public PDF copy was archived by this import.

Supplier access / request ↗

An exact-grade regional SDS has not yet been archived for public access on this site.

Supplier and range referencesOriginal supplier / material reference ↗

Find this material in the Document Library →

Suppliers & makers

Confirm grade, composition, current availability and production location directly with the supplier.

Origin, EcoSafe assessment & review history
Awaiting human verification

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.

EcoSafe assessment: Not assessed · no numerical points or certification.

Manufacturing origin remains source-specific; a supplier address does not establish production origin.

Library source check: November 2, 2026. Sources may require supplier access.