Food-Grade Silicone: Definition, Features, Usage & Storage
Food-Grade Silicone: Definition, Features, Usage & Storage
I. Definition & Standards of Food-Grade Silicone
Food-grade silicone, an eco-friendly addition silicone, consists of Component A (silicone) and Component B (curing agent), mixed in a 1:1 ratio. It has strict standards—non-toxic, odorless, and must pass authoritative food-grade certifications like FDA.
This certification ensures silicone molds are skin-safe with no side effects, widely used in food replication, candy/chocolate/cake molds, precision casting, carbon fiber composites, crafts, printing, silicone masks and pacifiers.
II. Features of Food-Grade Silicone
Food-grade (addition) silicone has these key features:
Low Shrinkage Rate: No small molecules released during crosslinking (shrinkage < 0.01%), ensuring mold precision and stability.
Deep Curing: Unrestricted by product thickness, suitable for complex-shaped molds.
High Temperature Resistance: Withstands 300-500℃, meeting high-temperature use needs.
High Tensile & Tear Resistance: Multiple mold uses, good fluidity, easy pouring, boosting mold life and efficiency.
Easy Operation: Curable at room temperature or by heating, flexible and convenient.
III. Notes for Using Food-Grade Silicone
Key notes for using food-grade silicone:
Avoid "Poisoning": Do not smoke while operating—smoke harms can leave silicone surface uncured.
Avoid Cross-Contact: Keep away from condensation silicone, which poisons Component B and prevents curing.
Impurity Control: Water, impurities, organotin catalysts, acids/alkalis and sulfur/phosphorus/nitrogen organics affect curing—keep silicone pure.
IV. Storage Methods for Food-Grade Silicone
Proper storage preserves silicone performance: seal it, store in a cool place (avoid sun/rain), and check regularly for a dry, clean environment.
In summary, food-grade silicone is widely used for its non-toxic, odorless, high-temperature resistant and easy-to-operate features. Note operational details and store properly to maintain performance and extend service life.
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