Introduction

Orange Silica Gel is a non-toxic, environmentally friendly desiccant made primarily of silicon dioxide (SiO₂). It contains an organic moisture indicator that allows the material to change color as it absorbs water, typically from orange to green or colorless.

Parameters and Specifications

Type		Orange Silica Gel
Chemical Formula		MSiO₂ . nH₂O
Appearance		Yellow granular (non-Co)
Diameter(mm)		0.5-1.5, 1-2, 1-3, 2-4, 2-5, 3-5, 3-6, 4-6, 4-8
SiO₂(%)		≥99
Adsorption Capacity(%wt)	25℃, RH20%	≥9.0
	25℃, RH35%	≥15.0
	25℃, RH50%	≥23.0
Color Change	25℃, RH20%	Yellow
	25℃, RH35%	Yellow green or light yellow
	25℃, RH50%	Green or white
Wear Ratio(%)		≤10
Loss on Ignition(%)		≤2.0
Particle Ratio(%)		≥90

Features

High moisture adsorption capacity: Can absorb up to ~30–40% of its own weight in water

Non-toxic and cobalt-free: Safe for food, pharmaceutical, and packaging applications

Environmentally friendly: Uses organic indicator instead of heavy metals

Reusable: Can be regenerated by heating to remove absorbed moisture

Key Applications

Packaging moisture control: Electronics, pharmaceuticals, food, leather goods, and textiles

Industrial drying: Gas drying, air drying, and solvent dehydration

Transformer breathers: Moisture control in power equipment

Precision instruments: Protection against humidity damage

Petrochemical and chemical industries: Drying and purification processes

Storage and transportation: Protection of goods from moisture during shipping

Why Choose Us

High-quality orange silica gel with stable adsorption performance

Strict quality control and consistent batch production

Cobalt-free and environmentally compliant materials

Reliable supply capacity and fast delivery

Professional technical support and responsive service

FAQ

Q: How does orange silica gel indicate moisture?

A: It changes color from orange to green or colorless as it absorbs moisture, indicating saturation level.

Q: Is orange silica gel safe to use?

A: Yes, it is non-toxic, cobalt-free, and environmentally friendly, making it suitable for sensitive applications.

Q: Can it be reused?

A: Yes, it can be regenerated by heating to remove absorbed moisture and restore adsorption capacity.

Q: What is the difference between orange and blue silica gel?

A: Orange silica gel is cobalt-free and safer, while blue silica gel contains cobalt chloride and may be less environmentally friendly.

Q: Where should it be stored?

A: It should be stored in a sealed, dry environment to prevent premature moisture absorption.

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Technical Specification

Type		Orange Silica Gel
Chemical Formula		mSiO₂ . nH₂O
Appearance		Yellow granular (non-Co)
Diameter(mm)		0.5-1.5, 1-2, 1-3, 2-4, 2-5, 3-5, 3-6, 4-6, 4-8
SiO₂(%)		≥99
Adsorption Capacity(%wt)	25℃, RH20%	≥9.0
	25℃, RH35%	≥15.0
	25℃, RH50%	≥23.0
Color Change	25℃, RH20%	Yellow
	25℃, RH35%	Yellow green or light yellow
	25℃, RH50%	Green or white
Wear Ratio(%)		≤10
Loss on Ignition(%)		≤2.0
Particle Ratio(%)		≥90

Application

Moisture Prevention And Packaging Desiccant
Industrial Air Drying