Core Product Advantages


Superior Optical Performance


Refractive index up to 1.54, meeting the needs of high-end LED packaging


Colorless and transparent liquid, ensuring light transmittance of optical devices


Excellent Reactivity


Vinyl content 3.0-3.4%, high reactivity


Easily reacts with hydrogen-containing compounds in the presence of platinum catalyst


Low addition reaction temperature, low catalyst dosage, complete reaction


Stable Product Quality


Solid content ≥96%, guaranteed purity


Viscosity 38000-53000 mPa·s (25℃), excellent processing performance


Technical Parameters
Item Specifications
Appearance Colorless and transparent liquid
Refractive index 1.54
Solid content ≥96%
Vinyl content 3.0-3.4%
Viscosity (25℃) 38000-53000 mPa·s


Main Application Areas
LED Packaging Materials
High Refractive Index Phenyl LED Packaging Silicone


High-Power LED Device Packaging


Optical Semiconductor Device Protective Coating


High-Temperature Resistant Silicone Rubber


Liquid Addition-Cure Silicone Rubber Base Material


High-Temperature Resistant Sealing Materials


Specialty Rubber Products


High-End Electronic Materials


Electronic Component Packaging


Circuit Board Protective Coating


High-Temperature Insulating Materials


Technological Innovation Value
"In the field of LED packaging, the optical properties and thermal stability of materials are equally important," said the R&D Director of Aiyota Electronic Materials. "IOTA 208 achieves a high refractive index of 1.54 through precise control of phenyl content and vinyl activity, ensuring long-term stability of the material under high-temperature environments. This provides a more reliable material choice for high-end LED manufacturing."


Usage and Storage Guidelines
Processing Characteristics


Used with hydrogen-containing silicone oils for low-temperature curing


Complete reaction, colorless and odorless, environmentally friendly and safe


Excellent film-forming properties, suitable for various molding processes


Storage Requirements


Store in a sealed container in a cool, dry, and dark place.


Prevent contamination, especially by catalysts.


Shelf life: 6 months. Expired products can still be used if they pass inspection.


Safety Precautions


Maintain good ventilation during use.


Wear necessary safety protective equipment.


Avoid contact with catalysts, oxidants, acids, and alkalis.


Packaging and Service
Packaging Specifications: 5kg/can, 50kg/drum, 200kg/drum


Transportation Class: Non-hazardous goods


Technical Support: Professional application guidance provided


Quality Assurance: Strict quality control system