Disodium Phenyl Dibenzimidazole Tetrasulfonate
(DPDT)
Disodium Phenyl Dibenzimidazole Tetrasulfonate (DPDT)
DPDT is a highly efficient, water-soluble UVA absorber designed for high-performance sunscreens and daily UV protection formulas. Unlike oil-soluble filters, this organic compound allows for the creation of crystal-clear gels and lightweight, non-greasy lotions with an exceptionally clean skin feel. It provides peak protection in the UVA II range, working synergistically with UVB filters to prevent long-term photoaging and skin damage. Its excellent photostability and ease of formulation make it a premier choice for manufacturers seeking to balance robust broad-spectrum efficacy with a refreshing, elegant cosmetic finish.
Activeman Specialities Pvt Ltd is a leading manufacturer and supplier of Disodium Phenyl Dibenzimidazole Tetrasulfonate (DPDT) which is used as a water-soluble UV-A filter in sun-care and cosmetic preparations when converted into a salt.
| Trade Name: | CATASHIELD AP UV | |||
| Chemical name: | Bisdisulizole Disodium | |||
| INCI: | Disodium Phenyl Dibenzimidazole Tetrasulfonate (DPDT) | |||
| CAS: | 180898-37-7 | |||
| EINECS: | 429-750-0 | |||
| UV-absorption range: | 280–370 nm | |||
| Applications: | CATASHIELD AP UV (DPDT) is highly photostable and often used in high-protection, light-stable formulations, providing significant synergy when paired with UVA filters like Avobenzone. PBSA is also photostable but mainly recognized for its light-weight, non-oily texture in daily moisturizers. Usage: Both are suitable for water-based gels, sprays, and lotions. | |||
Technical Data
| Appearance: | Yellow to dark yellow |
| Physical Form: | Powder |
| Loss on drying: | NMT 3.00% |
| Purity (%): | NLT 96.0% |
| UV Specific Extinction E (1%, 1 cm): | NLT 770 |
| Solubility: | To fully solubilize CATASHIELD AP UV and activate its UV-absorbing properties, you must raise the pH using a base (neutralizer). Common neutralizing agents include: Sodium Hydroxide (NaOH), Triethanolamine (TEA). Aim for a final pH between 7.0 and 7.5. If the pH drops below 7.0, the ingredient may recrystallize, leading to a "gritty" texture and a significant loss in SPF/UVA protection. |
| Packaging: | 25 kg HDPE Drum |
| Storage recommendation: | Store away from incompatible substances. Incompabilities: Oxidizers (Strong): Fire and explosion hazard, protect from light. Shelf life two years from date of Original packaging under adequate storage conditions. |