Answer:

Regarding the yellowish tint you observed in the solution, this is a common characteristic of calcium chloride-based dehumidifiers and does not indicate a quality defect. Below is a detailed explanation:

1. Why does the water turn yellow?

The light yellow color of the calcium chloride solution is primarily related to these factors:

• Natural Mineral Content: Industrial-grade calcium chloride is not 100% pure and may contain trace minerals like magnesium salts, sulfates, or calcium hydroxide (normal byproducts of brine purification).
• Production Process Characteristics:
  • Raw materials are sourced from natural brine, whose mineral content naturally fluctuates seasonally, causing slight color variations between batches.
  • The entire production involves physical purification (evaporation, concentration, drying) without bleaching agents or chemical whiteners, preserving the minerals’ natural hue.
• Water Reaction: Similar to limescale forming when tap water is boiled, trace minerals may precipitate as the calcium chloride dissolves upon absorbing moisture, causing slight discoloration.

2. Does the yellow color affect performance?

Not at all! This color change:

• Does not reduce moisture absorption: The core dehumidifying capability of calcium chloride is unaffected by color.
• Poses no safety risks: All components comply with national industrial product standards (e.g., HG/T 2327-2004).
• Is a physical phenomenon: Color intensity may vary slightly with environmental humidity and temperature.

3. Can the yellowing be prevented or reduced?

Current industry approaches include:

• Enhanced Raw Material Purification: Multi-stage filtration reduces mineral impurities but significantly increases costs.
• Adding Food-Grade Clarifiers (e.g., activated carbon): May impact absorption efficiency.

We prioritize the product’s high dehumidifying performance and natural safety, so we avoid excessive processing of the inherent mineral tones. If you are sensitive to the color, we recommend:

• Placing the dehumidifier box in discreet locations (e.g., closet corners).
• Replacing it regularly to prevent prolonged solution accumulation.

Did You Know?
Pure calcium chloride solution is colorless. However, industrial products balance cost-effectiveness with performance, allowing trace natural impurities. Be cautious of competing products claiming to be “completely colorless,” as this may indicate unnecessary chemical bleaching agents were adde