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Terephthalylidene Dicamphor Sulfonic Acid (TDSA) — CAS 92761-26-7 | UV Filter Supplier
CAS 92761-26-7
Absorbs UV-A radiation in sunscreen cosmetic products.
Overview
Terephthalylidene Dicamphor Sulfonic Acid (TDSA)
TDSA is an organic UV-A filter in Sigmak’s UV portfolio (product code SIG-UV-013), supplied as a liquid system.
A dicamphor sulfonic acid structure linked through a terephthalylidene bridge provides UV-A absorption; the sulfonic acid groups give the molecule water solubility.
Product identity
- CAS Number
- 92761-26-7
- Molecular Formula
- C28H34O8S2
- Molecular Weight
- 562.70
- Appearance
- Pale yellow to yellow transparent liquid
- Lambda Max
- 342.0–346.0 nm
- Assay (HPLC)
- 30.0–34.0%
- Chloride (Cl)
- NMT 0.30%
Cosmetic / Formulation Applications
- UV-A absorption in sunscreen cosmetic products
- Water-phase sun care formulations requiring UV-A protection
- Personal care products using liquid UV-A filter systems
Typical formulation considerations
- Water-soluble; supplied as a liquid concentrate at a defined active assay rather than as a solid.
- Intended for water-phase formulation use, distinct from the oil-soluble UV-A filters in this portfolio.
Packaging & documentation
- Packaging
- 25 kg HDPE drum
- Shelf life
- 2 years
- Storage
- Store at ambient temperature in a dry place away from direct sunlight.
- Documentation
- CoA / SDS / TDS available on request.
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