Instructions for The Use of Silica Gel Desiccant

Instructions for the use of silica gel desiccant

1. Overview of silica gel drying agent raw materials:

Silica gel desiccant is a highly active adsorption material, usually with sodium silicate and sulfuric acid reaction, and through a series of postprocessing processes such as aging, acid bubble. Silica is an amorphous substance with the chemical molecular formula of mSiO2.nH2O. Insoluble in water and any solvent, non-toxic, tasteless, odorless, chemical stable, does not react with any substance except strong alkali, hydrofluoric acid. The chemical composition and physical structure of silica gel determine that it has many characteristics that other similar materials are difficult to replace. Silica gel desiccant has high adsorption performance, good thermal stability, stable chemical properties, and high mechanical 

strength. It is a high microporous structure with strong hygroscopic properties. Therefore, it is widely used in the storage and transportation of drugs, food, instruments, instruments, equipment, leather, bags, shoes, textiles, etc., to control the relative humidity of the environment, to prevent articles from damp, mildew and corrosion.

ingredient list:

2. Safety performance of silica gel desiccant:

Silica gel has a strong adsorption capacity, can produce dry effect on human skin, therefore, the operation should be worn good work clothes. If the silica gel enters the eye, you need a lot of water to rinse, and get a doctor as soon as possible. Silica gel itself is a neutral substance, which will not react with any other substance except for the reaction with strong alkali and strong acid under certain conditions. At the same time, silica gel is also the only desiccant that has passed the US FDA certification and can be used in direct contact with drugs and food. After ingestion of silica gel desiccant, do not be nervous, it will not be absorbed by the human body. You can drink some milk, so that the silica gel desiccant will soon be excreted with human feces.

3. Overview of silicone desiccant hazard and first aid measures:

4. Classification of silica gel desiccants:

1、 Fine-porous silica gel desiccant:

The product has a white, translucent vitreous body in appearance. Mainly used for drying, moisture-proof, can be used as a catalyst carrier and organic compounds dehydration and refining. Because of its accumulation density and low humidity hygroscopic effect of obvious characteristics. Can be used as an air purifying agent to remove the moisture in the air to control the air humidity. It is also widely used in sea transportation, and it can also be used as a dehumidification between two layers of parallel sealed glass plates to maintain the transparency of the glass.

2、 Crude-bore silica gel desiccant:

The appearance of the product is white, has a block, spherical, microspherical three categories. The hygroscopic effect is more significant in environments with higher relative humidity. Often used as desiccant and desiccant, catalyst carrier, and can remove the organic acid and water in the transformer insulation oil. In addition, because of its large aperture, it is still the raw material of silica gel deep processing.

3、 Blue silica gel desiccant:

The product is a structure with highly fine pores. Blue, translucent, its color from blue to light red, can be mixed with general fine hole spherical silica gel as an indicator to indicate the saturation degree of desiccant, mainly used for dry moisture absorption.

4、 Cobalt-free silicone desiccant:

The appearance of cobalt-free color-changing silica gel desiccant is orange or translucent glass particles, which has a strong moisture absorption ability and in the process of hygroabsorption, its appearance color will produce obvious color changes with the increase of moisture absorption capacity. Cobalt-free silicone desiccant can be used both alone and together with fine porous silica gel (5% or more). When not damp orange, gradually become light green after moisture absorption, continue to absorb moisture into dark green, it is necessary to replace a new silicone or regeneration use. Cobalt-free silica gel desiccant is environmentally friendly without cobalt chloride, and is a substitute for blue silica gel.

5. Silicone desiccants are classified by applications:

1、 Silicone desiccant for medicinal, food and diagnostic reagents:

Drugs, food, diagnostic reagents with silica gel desiccant standards are mainly is to conform to the food and drug administration of drug packaging container (material) standard: the solid pharmaceutical paper bag silicone desiccant standard, the standard stipulates the solid packaging of fine hole spherical silica gel desiccant, in addition to the desiccant bag appearance, strength, moisture content, moisture absorption of adsorbent desiccant basic performance requirements, emphatically desiccant in harmful substance content (such as lead, arsenic content), microbial limit, solvent residue, decolorization performance, etc.

2、 Silicone gel desiccant for shoes and caps:

Silicone gel desiccant for shoes and caps can also be considered as a desiccant for general cargo drying, moisture-proof. The main requirements of silicone desiccant itself can not contain the prohibited substances in the relevant international standards, packaging material good air permeability and durable, at the same time in its adsorption effect to achieve other desiccant can not achieve the effect.

3、 Silicone gel desiccant for electronic products:

Electronic products, especially humidity-sensitive electronic components also have high requirements for packaging humidity control. J-STD-033b is compiled by the United States Committee of the Joint Committee on Electronic Devices Engineering (JEDEC), which is a widely used comprehensive standard for surface treatment, drying, drying and packaging of humidity-sensitive electronic components. Chapter 3 of this standard specifies the dry packaging requirements for these electronic components.

4、 Silicone desiccant for containers:

Container with silicone desiccant is mainly used in shipping container, used to adsorption container in the process of Marine transportation or storage, container because of ocean high humidity climate and large temperature difference between day and night, the steam in the container will condense into water and form the "container rain", in order to reduce the air moisture content in the container, prevent the production of container rain.

6. Instruction for using silica gel desiccant:

1. Before using the desiccant product, carefully check whether the sealing bag is damaged.

2, as far as possible to shorten the exposure time of desiccant in the air, is an important law to ensure the quality of desiccant production, once open the packaging, should be used as soon as possible. And should not be reused after opening a seal for a long time.(After opening, please seal the desiccant in the bag in time).

7. Application of silica gel desiccant:

1、 Silicone desiccant can be used for bottle and bags of medicine and food. Ensure the content to be dry, prevent the growth of all variety of miscellaneous mold.

2、 Silicone gel desiccant can be used as a general packaging desiccant. Such as bags, clothing, shoes and hats, leather, etc., to prevent goods in the storage or transportation process due to damp on product quality.

3、 Silicone gel desiccant can be easily placed in electronic products, instruments, household appliances, mechanical equipment and other products, to prevent the goods from affecting the product quality because of moisture.

4、 Silicone gel desiccant can be placed in the transport container to prevent the container rain.

5、 The most suitable moisture absorption environment for silicone desiccant is room temperature (20-32℃), high temperature (60-90℃), which can reduce the relative humidity of the environment to about 40%, so the application range of desiccant is very wide.

8. Common size of silica gel:

0.5-1.5mm、1-2mm、1-3mm、2-4mm、2-5mm、3-5mm、4-8mm

9. Common specifications of silica gel desiccant packets:

0.5g,0.7g,1.0g,2.0g,3.0g,5.0g,10.0g,20.0g,50.0g... et al.

10. Paper packaging materials of silica gel desiccant:

Plastic bottle: bottle cap, bottle bottom desiccant, round desiccant and other plastic container containing desiccant, etc

Paper bag: filter paper, composite paper, composite non-woven fabric, non-woven fabric, DuPont paper,

daily fiber paper, OPP film and other materials.

11. Internal packaging materials of silicone desiccant:

Polyethylene low-density bags, aluminum foil bags

12. Outer packing materials of silica gel desiccant:

Corrugated boxes, paper barrels, iron barrels, etc

13. Storage conditions of silica gel desiccant:

Avoid light, clean, dry place.

14. Effect period of silicone desiccant:

Two years