Calcium Chloride Desiccants

Key Attributes

Raw materials: anhydrous calcium chloride, calcium chloride dihydrate, anhydrous magnesium chloride
Model (formula): SorbMax-A260, SorbMax-A300, SorbPlus-B260, SorbPlus-C220, SorbPlus-D400
Specifications: 1g, 2g, 5g, 10g, 25g, 50g, 100g
Form: single layer/double layer
Packaging materials: coated non-woven fabric, transparent film, Tyvek, DuMei paper
Printing: English, multi-language version

Product Quote

$：Negotiable price, Free sample

Introduction:

Calcium chloride and magnesium chloride desiccants are two highly effective moisture-absorbing agents that share many common characteristics, so we will introduce them together.

Calcium chloride, the primary ingredient in its desiccant form, is produced through a refined process involving high-quality calcium carbonate and hydrochloric acid. This process includes reactions, filtration, evaporation, concentration, and drying (chemical reaction equation: CaCO3 + 2HCl = CaCl2 + H2O + CO2↑).。
Magnesium chloride, on the other hand, is derived from brine, a byproduct of salt production from seawater. It is concentrated into a solution of carnallite (KCl·MgCl2·6H2O), from which potassium chloride is removed after cooling. The remaining solution is then concentrated, filtered, cooled, and crystallized.

The powerful moisture-absorbing capabilities of both calcium chloride and magnesium chloride make them ideal desiccants, effectively protecting products from moisture damage, particularly during the transportation and storage of sensitive items.

Why Use High Moisture-Absorbing Desiccants?

Calcium chloride and magnesium chloride desiccants offer significantly higher moisture absorption rates and broader temperature ranges compared to traditional mineral and silica gel desiccants.

(This chart uses calcium chloride desiccants as an example)

Anhydrous Calcium Chloride Desiccant: Absorption rate ≥ 300%, suitable temperature range: -5°C to 90°C. (Anhydrous magnesium chloride can achieve an absorption rate of up to 400%.)
Mineral + Calcium Chloride Mixed Desiccant: Absorption rate ≤ 85%, suitable temperature range: < 50°C.
Pure Mineral Desiccant / Silica Gel Desiccant: Absorption rate ≤ 30%;
pure mineral desiccants are suitable for humidity levels < 50°C, while silica gel desiccants are suitable for humidity levels < 37°C.

Using high-performance desiccants like calcium chloride and magnesium chloride ensures better protection against moisture damage, especially in diverse environmental conditions.

1）The primary ingredients of calcium chloride desiccants are calcium chloride and plant starch. The moisture absorption principle relies on the strong hygroscopic properties of calcium chloride, which absorbs moisture from the air and combines with starch to form a gel-like substance, effectively preventing liquid leakage.
Calcium chloride desiccant raw material

2）Magnesium chloride desiccants consist of magnesium chloride and high molecular weight absorbent materials. They strongly absorb moisture from the packaging environment and gradually transform into a hard solid after absorbing humidity, preventing water vapor from seeping back.
Magnesium chloride desiccant raw material

1）The high hygroscopicity of calcium chloride means it can absorb large amounts of moisture. Our calcium chloride desiccants use a double-layer packaging design to prevent leakage: an outer layer of coated non-woven fabric, and an inner layer made of transparent film and non-woven material.

Dual-Layer Packaging for Double Protection

Outer Layer: Non-woven fabric & moisture-locking layer

Inner Layer: Transparent film & non-woven fabric

2）Our magnesium chloride desiccants feature imported “Tyvek” material from the USA, known for its breathability, durability, and excellent leak protection. The back layer is a transparent film, allowing easy visibility of saturation levels. It also has full-size adhesive backing for a secure fit. (For additional packaging options, please contact customer service.)

Tyvek

Transparent Film

Full-Size Adhesive

Our desiccants can be used in various forms, including placement, adhesion, and suspension. For specific applications and further information, please consult our customer service team.
高吸潮干燥剂应用



Desiccant Dosage Calculator for Packaging(Click to Enter)

This calculator is designed according to the DIN 55474 German standard.

Our company is one of the drafting units of BB/T 0049-2021 for desiccants in packaging (national standard), holding a leading technical position and expertise in the industry. Our products are superior and innovative, with a solid foundation in technology development, quality control, and market applications. We are committed to providing customers with efficient, safe, and environmentally friendly solutions for mold prevention and moisture control.

Advantages of Us

Established in 1998, with over 20 years of expertise in the research and production of desiccants and oxygen absorbers.
Stock code: 831880; Stock abbreviation: Chunwang New Materials.
Three production bases in Shenzhen, Dongguan, and Anhui, totaling 60,000㎡.
Drafting organization for the national standard BB/T 0049-2021 for packaging desiccants.
Drafting organization for the national standard GB/T 41896-2022 for food-grade oxygen absorbers.
Certified by ISO, BSCI, GMP, and recognized as a “High-Tech Enterprise”, and a “Specialized and New Enterprise (SNE)” .
Fully compliant with RoHS, REACH, TSCA, and FDA certifications.
Registered with National Pharmaceutical Packaging Material Registry: B20190000354.