Molecular Sieve Desiccant Bags

What is Molecular Sieve Desiccant?

Molecular sieve desiccant is a material with a precisely defined microporous crystalline structure that selectively adsorbs molecules based on their size — most notably water molecules — enabling deep, thorough drying that goes beyond what standard desiccants can achieve. Unlike silica gel, which physically adsorbs moisture across a range of conditions, molecular sieves use their uniform pore structure to target moisture with high selectivity, making them especially effective in demanding industrial drying applications. For a broader look at desiccant technology across our product range, see our article on Silica Gel Desiccant: Applications and Industry Insights.

Benefits

• Deep drying performance — the microporous structure allows for moisture removal beyond the capability of standard desiccants
• Selective adsorption — pore size is engineered to selectively target moisture and specific molecules
• Stable performance — maintains reliable moisture absorption (＞22% at RH75%@25°C) with low water content
• Flexible formats — available in 1g–100g sachet weights to match different application scales
• Customizable — supports private labeling and custom packaging to match your industrial needs

Applications

Molecular sieve desiccant bags are widely used in demanding industrial drying applications:

• In industrial drying and air separation units (ASU), they remove water vapor from feed air before cryogenic separation into high-purity oxygen and nitrogen.
• In natural gas dehydration, they help maintain gas quality and prevent corrosion caused by excess moisture.
• In solvent drying, they are used across pharmaceutical, fine chemical, and polymer production to remove water from solvents.
• In refrigerant drying, they protect air conditioning and refrigeration systems from moisture-related damage.
• In petrochemical processing, they help maintain precise moisture control across gas and liquid streams.

Packaging & Shipping

We offer flexible packaging formats and order quantities to fit both trial orders and full production runs.

Standard Specifications:

• 1g / 2g / 3g / 5g / 10g / 20g / 50g / 100g per sachet (weights above 100g to be confirmed separately)
• Packaging materials: Mitsubishi Hi-i paper or transparent wax paper
• Sealing style: three-side sealed
• Outer packaging: bulk poly bags, corrugated cartons, or custom retail display boxes

Minimum Order Quantity (MOQ) by Sachet Weight:

• 1g sachets: 10,000 pcs/carton
• 2g sachets: 6,000 pcs/carton
• 3g sachets: 4,000 pcs/carton
• 5g–100g sachets: please contact our team for carton quantities

Minimum order is typically one carton per sachet weight; sample orders are available for qualified buyers before committing to a bulk order.

Custom Options:

• Private labeling and custom printing available
• Custom sachet weight (within 1-100g range), packaging material subject to MOQ confirmation

Lead Time:

• Stock items: 3–7 days
• Custom/private label orders: 7–15 days

Shipping Terms: FOB / CIF / EXW — flexible based on destination and order volume. Given the smaller per-unit footprint compared to bulk industrial cargo, LCL and courier/parcel shipping are viable for smaller trial orders alongside full container loads for bulk repeat orders.

Documents & Certificates

We provide complete documentation to support your import, retail, and compliance requirements:

📄 Certificate of Analysis (COA) — Issued for each production batch, confirming moisture absorption capacity and material composition.

📄 Material Safety Data Sheet (MSDS/SDS) — Provided for all products, meeting international shipping and handling standards.

📄 ISO 9001 / ISO 14001 Certification — Quality and environmental management system certification.

📄 REACH & RoHS Compliance — Confirms compliance with EU chemical and hazardous substance regulations for products destined for EU markets.

Additional documents available on request: Certificate of Origin (COO), Packing List, Commercial Invoice.

FAQ

Q1: How is molecular sieve desiccant different from silica gel? Molecular sieve desiccant has a precisely defined microporous structure that selectively adsorbs molecules by size, enabling deeper drying than standard silica gel, which is well suited to demanding industrial applications like gas dehydration and air separation.

Q2: What sachet sizes are available? Standard weights range from 1g to 100g. Weights above 100g are evaluated on a case-by-case basis — please contact us for details.

Q3: What is the minimum order quantity? MOQ is based on carton quantity per sachet weight — for example, 10,000 pcs/carton for 1g sachets, 6,000 pcs/carton for 2g, and 4,000 pcs/carton for 3g. Please contact our team for 5g and above.

Q4: Can I get custom packaging or private labeling? Yes, we support custom packaging materials and private label printing subject to MOQ confirmation.

Need a Custom Solution?

Looking for a specific sachet size, packaging material, or private label design for your industrial drying needs? Send us your requirements and our technical team will get back to you within 24 hours with a tailored recommendation.

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