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Chemical Name: Diethylhexyl Butamido Triazone
Chemical Synonyms: Iscotrizinol; Uvasorb HEB; UV Absorber HEB
CAS No.: 154702-15-5
Molecular Formula: C₄₄H₅₉N₇O₅
Molecular Weight: 765.98 g/mol
Diethylhexyl Butamido Triazone (CAS 154702-15-5), also known as Iscotrizinol or Uvasorb HEB, is an oil-soluble triazine UV filter that provides broad-spectrum protection against UVB and short-wave UVA radiation, with peak absorption at approximately 310 nm . It is among the most photostable UV filters available, retaining about 90% of its protective capacity after 25 hours of sun exposure . Its oil solubility makes it well-suited for water-resistant formulations, and it contributes meaningfully to SPF at low concentrations while stabilizing other filters in the same formula .
Parameter | Specification |
|---|---|
Product Name | Diethylhexyl Butamido Triazone |
Synonyms | Iscotrizinol; Uvasorb HEB; UV Absorber HEB |
CAS Number | 154702-15-5 |
Molecular Formula | C₄₄H₅₉N₇O₅ |
Molecular Weight | 765.98 g/mol |
EINECS No. | 421-450-8 |
Assay / Purity | ≥99% |
Appearance | Off-white to white powder |
Melting Point | 92–102 °C |
Solubility | Oil-soluble; very soluble in oils and alcohols |
Absorption Peak | ~310 nm (UVB / short-wave UVA) |
Storage | Cool, dry place, protected from light |
Sun Care Formulations: Primary UVB filter for sunscreens, sun serums, and daily moisturizers with SPF.
Water-Resistant Products: Oil-soluble nature makes it ideal for water-repellent and sweat-resistant sun care .
Photostabilization: Stabilizes other UV filters in combined systems, improving overall formula photostability .
Daily Wear SPF: Suitable for lightweight, high-SPF daily products where low filter loading is desired.
EU: Permitted at up to 10% concentration under EU cosmetics regulation .
Asia: Approved in many Asian markets including Korea and Japan .
United States: Not approved by the FDA for use in sunscreens. Products containing this ingredient cannot be marketed as sunscreen in the US .
China: Listed as a permitted UV filter in China’s Safety and Technical Standards for Cosmetics .
High Photostability: Retains ~90% of SPF capacity after 25 hours of sun exposure, among the most photostable filters available .
Low Loading, High SPF: Achieves meaningful SPF contribution at low concentrations, helping formulators avoid the heavy, greasy feel of older filter systems .
Oil-Soluble Convenience: Easily incorporated into the oil phase of emulsions and anhydrous formulations; ideal for water-resistant claims .
Large Molecular Size: Molecular weight ~766 g/mol keeps it in the uppermost skin layers, reducing sensitization risk .
Full Documentation: COA and MSDS available upon request.
Standard Packaging: 1 kg / 5 kg / 25 kg in aluminum foil bags or fiber drums, or customized packaging upon request .
Storage Conditions: Store in a tightly closed container in a cool, dry place, protected from light .
Shelf Life: 24 months under proper storage conditions .
