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Silicagel Orange ( With Indicator ) - 500g

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10.25
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Description

Silica Gel Orange – With Indicator

Other Names: Silica gel with moisture indicator, Orange silica gel, Indicating silica gel
Chemical Composition: Amorphous SiO₂ with moisture indicator (typically methyl violet or iron(III) salts)
CAS Number: 112926-00-8 (silica base)
Appearance: Orange beads or granules (turn green upon saturation with moisture)
Odor: Odorless

Silica gel orange is a desiccant composed of synthetic amorphous silica impregnated with a moisture-sensitive indicator. It is used to adsorb humidity and monitor moisture levels in closed environments, such as in packaging, storage containers, and analytical instrumentation.


Chemical and Physical Properties

  • Density: ~0.75 g/cm³ (bulk density)

  • Surface Area: 600–800 m²/g

  • Pore Size: ~2.5 nm

  • pH (suspension): 4–7

  • Moisture Capacity: ~25–30% of its weight (at 100% relative humidity)

  • Color Change: Orange (dry) → Green (moist/saturated)


Applications

  • Humidity Control: Used to maintain dryness in packaging of electronics, instruments, and chemical goods.

  • Air and Gas Drying: Applied in compressed air systems and desiccant air dryers.

  • Analytical Labs: Used in desiccators and sample preservation containers.

  • Monitoring Moisture Saturation: Visual color change provides immediate indication of moisture exposure.


Safety

Signal Word: ⚠️ Warning

GHS Hazard Statements

H350 (12.6%): May cause cancer [Danger Carcinogenicity]

H372 (46%): Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]

H373 (29.4%): May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure]

Precautionary Statement Codes

P203, P260, P264, P270, P280, P318, P319, P405, and P501


Handling and Storage

  • Handling: Avoid dust generation. Use appropriate PPE when handling large quantities.

  • Storage: Keep in tightly sealed containers in a dry place. Avoid direct contact with water. Store away from acids and alkaline substances.


Environmental Considerations

Generally considered non-toxic to the environment in small quantities. Dispose of used silica gel according to local waste disposal regulations, especially if it contains metal-based indicators.

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