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  • Desiccants - Desiccant Packs

    Clay Desiccant Packets- Kraft bag clay desiccant

    Desiccants are used as a dehumidifier to control moisture in contained environments, including pharmaceuticals, medical, diagnostics, food, electronics, and optical industries. Clay Desiccant Packets are made of an aluminosilicate clay compound which is a natural mineral and is more economical than silica gel. At 20% RH, Desi Pak will adsorb 50% more moisture than required by Mil-D-3464E, where as silica gel will only adsorb 3.5% more moisture than required by Mil-D-3464E. The chart under the pricing is used to estimate the number of Desiccant Packets required for moisture protection.

     

    Bentonite dessicants are all natural, effectivly absorb moisture in packaging to prevent damaging effects such as corrosion, mold and degradation. The production of clay desiccants have less impact on the environment as no harsh chemicals are used during production and mine sites are recultivated and renaturalized.

     

    Frequently asked Questions about Desiccants

     

  • Kraft Desiccant Packets
    Kraft Desiccant Packets
  • Tyvek Desiccant Packets
    Tyvek Desiccant Packets
  • Desiccants in Pail
  • Desiccants in Drum

Kraft Desiccants in Pails - Full Pallet - 48 Pails

Sku # Description UOM Qty/Pail 1 12 24 25+
1/6 Clay Desiccant 1 x 2.5 DS01
1/6 Clay Desiccant 1 x 2.5

1/6 Clay Desiccant 1 x 2.5

DESI PAK #3755

PROTECTS: 0.14 CUBIC FEET

POUCH TYPE: KRAFT PAPER

STANDARDS: MIL-D-3464, TYPE I & II

MIL-P-116

FED.STOCK# 6850-00-264-6564

PAIL 1200 $106.40
$103.20 $97.30 Quote
1/3 Clay Desiccant 1 x 3.50 DS02
1/3 Clay Desiccant 1 x 3.50

1/3 Clay Desiccant 1 x 3.50

DESI PAK #3749

PROTECTS: 0.28 CUBIC FEET

POUCH TYPE: KRAFT PAPER

STANDARDS: MIL-D-3464, TYPE I & II

MIL-P-116

FED.STOCK# 6850-00-264-6561

PAIL 700 $76.40
$74.10 $69.90 Quote
1/2 Clay Desiccant 3 x 3.5 DS03
1/2 Clay Desiccant 3 x 3.5

1/2 Clay Desiccant 3 x 3.5

DESI PAK #3741

PROTECTS: 0.42 CUBIC FEET

POUCH TYPE: KRAFT PAPER

STANDARDS: MIL-D-3464, TYPE I & II

MIL-P-116

FED.STOCK# 6850-00-264-6568

PAIL 550 $90.10
$87.30 $82.40 Quote
1 Clay Desiccant 3 x 4.5 DS04
1 Clay Desiccant 3 x 4.5

1 Clay Desiccant 3 x 4.5

DESI PAK #3785

PROTECTS: 0.83 CUBIC FEET

POUCH TYPE: KRAFT

STANDARDS: MIL-D-3464, TYPE I & II

MIL-P-116

FED.STOCK# 6850-00-264-6035

PAIL 300 $58.30
$56.50 $53.30 Quote
2 Clay Desiccant 3 x 6-1/2 DS05
2 Clay Desiccant 3 x 6-1/2

2 Clay Desiccant 3 x 6-1/2

DESI PAK #25425127698

PROTECTS: 1.67 CUBIC FEET

POUCH TYPE: KRAFT PAPER

STANDARDS: MIL-D-3484E, TYPE I & II

MIL-P-116

FED.STOCK# 6850-00-264-6574

PAIL 150 $45.80
$40.70 $40.10 Quote
5 Items

Kraft Desiccants in Drums - Full Pallet - 5 Drums

Sku # Description UOM Thickness Qty/Drum 1 5 10 11+
2 Clay Desiccant 5 x 4.75 DS05B
2 Clay Desiccant 5 x 4.75
Ships via LTL

2 Clay Desiccant 5 x 4.75

DESI PAK #25425027696

PROTECTS: 1.67 CUBIC FEET

POUCH TYPE: KRAFT PAPER

STANDARDS: MIL-D-3484E, TYPE I & II

MIL-P-116

FED.STOCK# 6850-00-264-6573

DRUM 800 $211.90
$208.70 $193.80 Quote
4 Clay Desiccant 5 x 5.5 DS06
4 Clay Desiccant 5 x 5.5
Ships via LTL

4 Clay Desiccant 5 x 5.5

DESI PAK #3809

PROTECTS: 3.33 CUBIC FEET

POUCH TYPE: KRAFT PAPER

STANDARDS: MIL-D-3464, TYPE I & II

DRUM 500 $192.50
$189.55 $176.00 Quote
2 Items

Tyvek Desiccants in Pails - Full Pallet - 48 Pails

Sku # Description UOM Qty/Pail 1 12 24 25+
PKT Desi Pak 1/6U TY 27X64 DS01-TYVEK
PKT Desi Pak 1/6U TY 27X64

PKT Desi Pak 1/6U TY 27X64

PAIL 1200 $100.85
$98.25 $88.65 Quote
PKT Desi Pak 1/3U TY 27X89 DS02-TYVEK
PKT Desi Pak 1/3U TY 27X89

PKT Desi Pak 1/3U TY 27X89

PAIL 700 $76.40
$74.10 $69.90 Quote
BAG Desi Pak 1U T2 TY 641 3X4 DS03-TYVEK
BAG Desi Pak 1U T2 TY 641 3X4

BAG Desi Pak 1U T2 TY 641 3X4

PAIL 300 $69.95
$67.25 $65.30 Quote
BAG Desi Pak 2U T2 TY-695 3X6 DS05-TYVEK
BAG Desi Pak 2U T2 TY-695 3X6

BAG Desi Pak 2U T2 TY-695 3X6

PAIL 150 $52.30
$50.25 $48.30 Quote
4 Items

Tyvek Desiccants in Drums - Full Pallet - 5 Drums

Sku # Description UOM Thickness Qty/Drum 1 5 10 11+
BAG Desi Pak 1U T2 TY 641 3X4 DS03-TYVEK-DR
BAG Desi Pak 1U T2 TY 641 3X4
Ships via LTL

BAG Desi Pak 1U T2 TY 641 3X4

DRUM 1300 $245.85
$239.00 $234.95 Quote
BAG Desi Pak 2U T2 TY-695 3X6 DS05-TYVEK-DR
BAG Desi Pak 2U T2 TY-695 3X6
Ships via LTL

BAG Desi Pak 2U T2 TY-695 3X6

DRUM 800 $225.35
$220.50 $215.65 Quote
BAG Desi Pak 4U T2 TY-523D 5X5.5 DS06-TYVEK-DR
BAG Desi Pak 4U T2 TY-523D 5X5.5
Ships via LTL

BAG Desi Pak 4U T2 TY-523D 5X5.5

DRUM 500 $199.95
$195.65 $190.25 Quote
8 Clay Desiccant 5 x 8 DS07
8 Clay Desiccant 5 x 8
Ships via LTL

8 Clay Desiccant 5 x 8

DESI PAK #3827

PROTECTS: 6.67 CUBIC FEET

POUCH TYPE: TYVEK PAPER

DRUM 300 $205.60
$202.50 $188.00 Quote
16 Clay Desiccant 5.75 x 10 DS08
16 Clay Desiccant 5.75 x 10
Ships via LTL

16 Clay Desiccant 5.75 x 10

DESI PAK #3778

PROTECTS: 13.33 CUBIC FEET

POUCH TYPE: TYVEK PAPER

DRUM 150 $162.70
$160.25 $148.80 Quote
80 Clay Desiccant 8.75 x 12.5 DS09
80 Clay Desiccant 8.75 x 12.5
Ships via LTL

80 Clay Desiccant 8.75 x 12.5

DESI PAK #3822

PROTECTS: 66.65 CUBIC FEET

POUCH TYPE: STRING SEWN

STANDARDS: MIL-D-3464, TYPE I & II

MIL-P-116

DRUM 30 $204.80
$201.60 $187.20 Quote
6 Items

Frequently asked Questions about Desiccants

How much desiccant do I need?

What is desiccant and what does it do?

What are clay desiccants?

What is silica gel?

What is indicating silica gel?

What is molecular sieve?

What is a desiccant "unit"?

When do I need to include a humidity indicator card in my package?

How does a desiccant most effectively protect my product or package?

What size bags, packets, and canisters are available?

What industries and products use desiccant?

How are desiccants packaged?

 

VOLUME
Units Required
Stock #
CU. IN.
CU. FT.
GAL.
237 0.14 1.1 1/6 DS01
476 0.28 2.1 1/3 DS02
715 0.42 3.2 1/3 DS03
1,429 0.83 6.2 1 DS04
2,857 1.67 12.5 2 DS05
4,286 2.50 18.7 3 DS05
5,714 3.33 25.0 4 DS06
7,143 4.17 31.2 5 DS06
8,571 5.00 37.4 6 DS06
10,000 5.83 43.6 7 DS06
11,423 6.67 50.0 8 DS07
12,857 7.50 56.1 9 DS07
14,286 8.33 62.3 10 DS07
17,143 10.00 74.8 12 DS07
20,000 11.67 87.3 14 DS07
22,857 13.33 99.7 16 DS08
28,571 16.67 125 20 DS08
42,857 25.00 187 30 DS08
57,143 33.33 249 40 DS08
71,429 41.67 307 50 DS08
85,714 50.00 367 60 DS08
100,000 58.30 432 70 DS08
114,286 66.67 493 80 DS09

How much desiccant do I need?

  • It depends. The amount of desiccant required is usually dependent on the following factors:
  • volume of air space to be desiccated
  • nature of the material to be protected
  • moisture surrounding the package
  • type of desiccant to be used
  • length of time for protection
  • atmospheric conditions (temperature and relative humidity) when/where the product is sealed and during subsequent shipment and storage

 

Desiccant Requirement Formula:

  • Formula: Units = 0.011 x Bag Area (in.²)
  • Example: 10" x 10" in. ClearZip Bag.
  • Bag Area: 10" x 10" x 2 sides = 200 in.³
  • Units Needed: 0.011 x 200 = 2.2 Units

 

Use our Desiccant Calculator table to determine the amount of desiccant for your application.

Please note that the information in this desiccant calculator is for reference purposes only and should not be interpreted as an exact desiccant recommendation. There are several other factors to consider, such as:

  • What product is being protected?
  • What type of container/packaging is being used and how well is it sealed?
  • What is the total amount of time (including packing, shipping, and storage) for which you need protection?
  • Is the product sealed in a separate polybag (plastic bag) within the container/packaging?
  • What are the approximate environmental conditions (temperature and relative humidity %) during the time for which you need protection?

 

 

Tyvek® is a registered trademark of Dupont.
Desi Pak® is a registered trademark of Süd-Chemie

Süd-Chemie is a division of the Clariant Company


What is desiccant and what does it do?

A desiccant is a dehumidifying agent which attracts moisture from the atmosphere. It adsorbs and holds particles of water to itself. Desiccant Packets are small sachets of Desiccant clay, aimed at protecting goods from moisture. The three most common types of desiccants are clay, silica gel, and molecular sieve. Desiccant Packets help protect products in a wide range of industries, including pharmaceuticals, nutraceuticals, diagnostics, food and electronics, from moisture

 

A Desiccant is a substance that removes moisture from the surrounding air. When sealed in an air-tight container, such as a plastic bag, a Desiccant Packet will produce a low humidity environment within the Poly Bags and Poly Liners .

How to Use Desiccant Packets?
 

Place your item into an Anti-static Bags & Static Shielding bags, Plastic Reclosable Bags - Resealable Plastic Bag or Cellophane Bags and insert the Desiccant Packets. Seal the bag immediately. The silica gel will remove moisture from air within the package.

How to Store Desiccant Packs? 

Unused desiccant packs should be stored in an air-tight container. To preserve their effectiveness they should be kept in the case until immediately before use.

 

How Long Do the Desiccant Packets Last? For best results replace the Desiccant Packets often or if they are exposed to air for an extended time. Between uses seal the empty case with your Desiccant Packet inside. That will preserve the unused Desiccant Packets  for future use.

Non Desiccant and Desiccant protected Example

Common Uses of Desiccants:
Protect foods and medicines like popcorn, candy, pills, vitamins.
Protect important documents inside safes and lock boxes.
Protect musical and camera equipment, electronics, leather, rubber, copper, etc.

 

For moisture protection of foods, medicines and exposed electronic components, we recommend white sulfur-free Tyvek® Desiccant Packets. Tyvek Desiccants are sold in same pail and drum sizes as Brown Kraft Desiccants.

 

 

Why use desiccants?

Products vulnerable to moisture damage need special protection during storage and transport to ensure that they remain effective. Desiccant Packets provide a simple, dependable and economical solution for preventing moisture damage in small, sealed packages. A popular Desiccant Packets configuration in the pharmaceutical industry, Desiccant Packets are also ideal for protecting nutraceuticals, diagnostics, electronics and food In addition to protecting products from moisture.

 

What are clay desiccants?

Clay desiccants are non-hazardous, moisture adsorbent substances created by the controlled drying of a calcium (bentonite) aluminosilicate clay. This naturally occurring montmorillonite clay has a special affinity for moisture and is chemically inert and non-corrosive. The layered structure of clay desiccant attracts and adsorbs moisture onto its surface and between its layers.

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Clay is the least expensive of all desiccants and highly effective within normal temperature and relative humidity ranges. It is used in most industrial applications requiring humidity control. Clay desiccant can adsorb up to 28% of its weight in water vapor at 77°F (25°C) and 80% relative humidity.  At full moisture vapor capacity, Desi Pak remains dry and free-flowing. There is no apparent change in size, shape, or texture of the desiccant. 

 

Clay desiccant works satisfactorily below 120°F (49°C). Above 120°F (49°C), there is a possibility that the clay will give up moisture rather than pull it in (silica gel or molecular sieve are suitable for such temperatures). Accordingly, anticipated storage and transportation conditions should be considered when deciding whether or not to use clay. 

 

What is silica gel?

Silica gel is silicon dioxide (SiO2), an amorphous form of silica which is manufactured from sodium silicate and sulfuric acid. It is a naturally occurring mineral that is purified and processed into beaded or granular form. Like clay desiccant, silica gel is also non-corrosive and chemically inert. 

Much like a sponge, silica gel's interconnected pores form a vast surface area that will attract and hold water by adsorption and capillary condensation, allowing silica gel to adsorb about 40% of its weight in water vapor at 100% humidity.

 

As a desiccant, silica gel has an average pore size of 24 angstroms (24A). Silica gel desiccant will pull in moisture at temperatures up to 220°F (104°C). As temperatures increase above 100°F (38°C) the rate of moisture pick-up will slow down, but the silica gel will still work. Silica gel performs best at room temperatures between 70°F to 90°F (21°C to 32°C) and at high humidity between 60% to 90% relative humidity

 

What is indicating silica gel?

 Indicating silica gel is a bead or granule that has been washed with a concentration of cobalt chloride (a heavy metal salt). The cobalt chloride is a deep blue color when dry and turns from blue to purple to pink as it becomes saturated with moisture. 

 

Another use of indicating silica gel is with a moisture sensitive product that will be inspected regularly, as the indicating silica gel gives a quick visual indication of how well the product is doing. Due to the presence of cobalt chloride, indicating silica gel desiccant should never be used in contact with products for consumption, such as food or pharmaceuticals.

 

Indicating silica gel desiccant is also available in special packet sizes for use in electronics, pharmaceutical, or food packaging.

 

What is molecular sieve?

Molecular sieve is a synthetically produced crystalline metal alumosilicate zeolite. Molecular sieve particles have a uniform pore structure (created during the manufacturing process). This enables molecular sieve to separate molecules by size. It is also non-hazardous and derived from naturally occurring materials. 

 

Molecular sieve is the desiccant of choice for the most demanding and unique applications. The pore structure of molecular sieve desiccant provides a higher capacity for water adsorption than either silica gel or clay at very low humidity levels. Molecular sieve also retains a higher percentage of moisture capacity at elevated temperatures; in fact, molecular sieve can hold moisture at temperatures well past 450°F (232°C). Because of its high affinity for moisture, molecular sieve is able to bring the relative humidity in packages down as low as 10% relative humidity.

The most commonly used pore size for drying applications is 4 angstroms (4A). Molecular sieve desiccant is also available in 3 angstroms (3A), 5 angstroms (5A) and 10 angstroms (13X) sizes for specific molecule separation, including gases. 

 

Molecular sieve is the most aggressive of the primary desiccants (in terms of adsorption rate), so additional handling procedures may need to be considered. 

 

What is a desiccant "unit"?

In desiccant terminology, a "unit" is the quantity of desiccant required to meet the U.S. Military's specification (MIL-D-3464E) for packaged desiccant products. Under this specification, a unit is the quantity of desiccant which will adsorb 3.00 grams of water vapor at 20% relative humidity or 6.00 grams of water vapor at 40% relative humidity at 77°F (25°C).

 

When do I need to include a humidity indicator card in my package?

You need a humidity indicator card if you are concerned as to whether or not the desiccant in your package is still active. Desiccant becomes inactive under the following conditions:

  • if your package is not properly sealed
  • if you don't use enough desiccant in your package to draw down the relative humidity
  • if the barrier material (i.e., plastic bag) you use to package your product has a high moisture vapor transmission rate (which means that a significant amount of humid air is entering your package through the barrier material itself).

 

How does desiccant most effectively protect my product or package?

In order to achieve optimal protection, desiccants should be used within a closed/sealed moisture barrier or a rigid/sealed container. Humidity Indicator Cards are generally placed inside the container to show the humidity level and to indicate when the desiccant needs to be replaced.

 

What size bags, packets, and canisters are available?

Standard sizes for unit bags are as follows: 1/6, 1/3, 1/2, 1, 2, 4, 8, 16, and 80 units. A unit is roughly one ounce of desiccant material.

Standard sizes for packets are as follows: 1/4, 1/2, 1, 2, 3, 5, and 10 grams.

Standard sizes for canisters are as follows: 1/2, 1, 2, and 3 grams.

Custom sizes are available to fit your packaging needs, though such sizes typically carry a significant minimum order quantity.

 

What industries and products use desiccant?

The largest users of desiccants are the industrial, pharmaceutical, and the electronic components packaging industries. The following list shows examples of the types of industries and products that use desiccant products:

 

Industries Products
Aerospace Batteries
Apparel Bulk powdered chemicals
Automotive     Cholesterol tests
Communications Circuit boards
Dental Clothing
Diagnostic Documents and paper storage
Education
Electronic components
Electronics Flour, sugar, grains
Film making Glucose tests
Food packaging Industrial equipment
Foodstuffs Instruments
Industrial Leather products
Medical Machine Parts
Military Medical equipment
Nutraceutical Metal and machine parts
Optics Metal powders
Packaging Military instruments and armaments
Pet food Motors
Pharmaceutical Museum storage
 Textiles Oceanographic devices
  Optical devices
  Pet foods
  Photographic equipment and film
  Powdered or beaded glass
  Pregnancy tests
  Relays and communication devices
  Safes
  Shoes
  Semiconductors
  Vitamins

 

How are desiccants packaged?

Desiccants are generally packaged in bags, 5 gallon buckets or pails, packets, canisters or fiber drums. (Packets are sometimes referred to as "sachets" or "pouches.")

 

Desiccants in bags are commonly referred to as industrial desiccants. They are primarily used by industry because their medium to large size enables them to adsorb moisture in heavy duty applications. However, these bags are commonly used in non-industrial applications as well.

 

Bagged desiccants are available in:

  • Tyvek® (heat sealed)
  • Kraft paper (heat sealed)
  • Lantuck non-woven rayon/polyester blend (string sewn)

 

The term "bagged" desiccants commonly refers to any desiccant which is packaged by the unit.

 

Desiccants in packets or canisters are commonly referred to as pharmaceutical desiccants. They are primarily used by the pharmaceutical industry because of their small size. However, other industries, such as electronics, optics, and food packaging utilize these packets and canisters as well.

 

Packet desiccants are available in:

  • Tyvek (heat sealed)
  • GDTII (heat sealed)

 

Canister desiccants are available in:

  • Polyethylene containers

 

Composition of SCPP Film Stocks

Film
Composition
Porosity
Tyvek
Spun-bonded polyethylene
50-100 sec
Kraft (X-Crepe)
Cross creped kraft paper
5-25 sec
GDT-2
BT-060E non-woven 65% polyester/35% polypropylene
5-25 sec
Sewn Bags
Non-woven rayon
5-25 sec
MP-20
2 mil polyethylene/0.48 mil polyester clear film
N/A

 

 

When International Plastics receives a call from a customer looking for a desiccant, our sales reps will help calculate which type and size of desiccant will work best for the particular application.

 

To determine the number of "units" required to protect medium to large products/packages/areas, refer to the Desiccant Requirements Chart Unit Sizes.

 

To determine the number of "grams" required to protect small products/packages/areas, refer to the Desiccant Requirements Chart Gram Sizes.

 

 

It is important to contact your International Plastic's Sales Representative to discuss your specific application.