Food-grade Silica Gel (Orange) 食品級防潮珠 (橙色)
$0.10
This product is currently sold out.
Minimum order of 500 grams
(price is per gram)
Description
Silica gel is an amorphous and porous form of silicon dioxide (silica). It has a strong affinity for water molecules and is widely used as a desiccant. This silica gel will change from orange to dark green when saturated with moisture. When that happens, it is time to reheat the beads and reuse them.
Suggestion
Closet ~ 500g
Drawer/shoe cabinet ~ 100g
How to Reactivate Silica Gel
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Oven: Place in a heat-safe tray or wide container. 80-100°C for 30 mins or until fully orange. Stir every 10 mins.
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Microwave: In a heatproof container, heat silica gel on low to medium for 3 minutes. Stir it with a spoon and heat for another 3 minutes. Continue to heat in short intervals while stirring in between until the orange colour is fully restored. Approximate drying time is 8 to 12 minutes per 500g of gel.
Note
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While this orange indicating silica gel is safe to use around food items as it is free from the toxic substance cobalt chloride, it should not be used in direct contact with products that are intended for consumption.
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Use a very thick pyrex (glass) baking dish or metal baking tray to dry the gel. Do not use plastic for drying silica gel because the hot beads may cause the dish to melt.
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Use adequate ventilation as a sensible precaution.
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Silica gel gets very hot during the drying process. Do not transfer silica gel to another storage container until the gel has thoroughly cooled.
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It is better to under-heat it, than overheat it. It is better to re-dry small batches than large batches. One indicator of overheated silica gel is the presence of black silica beads.