Terephthalylidene dicamphor sulfonic acid (Sarasorb TDSA)

1. STRUCTURE
Terephthalylidene dicamphor sulfonic acid (Sarasorb TDSA)
2. PRODUCT NAME & DETAILS
Product Name Terephthalylidene dicamphor sulfonic acid (Sarasorb TDSA)
Product Code 011548
CAS No 92761-26-7
HS Code 2914.79.90
Molecular Formula C28H34O8S2
Molecular Wt. 562.70
3. REGULATORY INFORMATION
Chemical nameCommon names and synonymsCAS numberEC number

Terephthalylidene dicamphor
sulfonic acid (Sarasorb TDSA)


[3-[[4-[[7,7-dimethyl-3-oxo-4-(sulfomethyl)
-2-bicyclo[2.2.1]heptanylidene]methyl]phenyl]
methylidene]-7,7-dimethyl-2-oxo-1-bicyclo[2.2.1]
heptanyl]methanesulfonic acid
92761-26-7
410-960-6
European Inventory of Existing Commercial Chemical Substances (EINECS)
Not listed
EC Inventory
Listed
United States Toxic Substances Control Act (TSCA) Inventory
Not listed
China Catalog of Hazardous chemicals 2015
Not Listed
Chinese Chemical Inventory of Existing Chemical Substances (China IECSC)
Not listed
Korea Existing Chemicals List (KECL)
Not listed
Canadian Domestic Substance List (DSL)
Not listed
Canadian Non-Domestic Substance List (NDSL)
Not Listed
Japanese Existing and New Chemical Substances Inventory (ENCS)
Not listed


4. SPECIFICATION
Physical Appearance
Pale Yellow to Yellow Transparent Liquid
Identification (IR Test)
Identical
Lambda Max
342.0 to 346.0 NM
Chloride (CL)
NMT 0.30%
Assay (HPLC)
30.0 to 34.0%
5. APPLICATIONIt is an organic UV filter added to sunscreen cosmetics products to absorb  

UVA radiation.
6. HAZARD CLASSIFICATION
Non-Hazardous substance.
7. STORAGE CONDITION
Store at ambient temperature in dry place away from direct sun light.
8. PACKING DETAILS

25 kg HDPE Drum.

9. SHELF LIFE
2 years.
Disclaimer
Typical properties should not be considered as specification.
Product covered by valid patents are not offered or supplied for commercial use. The Patent position should be verified by the customer.
Products will not be supplied to countries where they could be in conflict with existing patents.
Products currently covered by valid US patents are offered for R&D use in accordance with 35 USC 271 (e) (I) Above information is given in good faith and without warrenty.

The above information is given in good faith and is without warranty

Frequently Asked Questions

Q1: What is Sarasorb TDSA and what type of UV filter is it?

A1: Sarasorb TDSA (CAS 92761-26-7, C28H34O8S2, mol. wt. 562.70) is an organic UVA filter added to sunscreen cosmetics to absorb UVA radiation. It's supplied as a pale yellow to yellow transparent liquid with a Lambda Max of 342.0–346.0 nm and an assay of 30.0–34.0% by HPLC.

Q2: What is unusual about the assay specification (30–34%) of Sarasorb TDSA?

A2: Unlike most UV filter ingredients which are supplied as high-purity solids (95%+), Sarasorb TDSA is supplied as a liquid solution with an active content of 30–34% by HPLC. This is normal for this ingredient class, as TDSA is typically handled and sold as an aqueous or dispersed solution.

Q3: How is Sarasorb TDSA packaged and what is its shelf life?

A3: It's packed in 25 kg HDPE drums and has a shorter shelf life of 2 years (compared to the usual 3 years for most Sarasorb products), which should be factored into inventory planning.

Q4: Is Sarasorb TDSA listed on major international chemical inventories?

A4: It is only listed on the EC Inventory. It is not currently on US TSCA, China IECSC, KECL, Canadian DSL, or Japan ENCS — sunscreen formulators targeting those markets must verify its regulatory status.

Q5: Does Sarex manufacture and export Sarasorb TDSA for use in personal care formulations internationally?

A5: Yes, Sarex is a leading fine chemical manufacturer and exporter in India and supplies Sarasorb TDSA to sunscreen and personal care manufacturers across its global customer base of 40+ countries.