Currently, Huashi Pharmaceutical's Xiuba Chlorine Dioxide Disinfectant is available in the market in two formulations: single-component and dual-component (A/B agents), with powder and tablet forms. What is the relationship between these products? First, it is essential to understand that chlorine dioxide itself is a gas. The solid products sold on the market are precursors to chlorine dioxide, meaning these white powders undergo chemical reactions to produce chlorine dioxide. The primary raw materials include sodium chlorite, acid, and activators. Therefore, strictly speaking, when you purchase Xiuba disinfectant, you are not buying chlorine dioxide directly but rather a chlorine dioxide generator, as the product only produces chlorine dioxide when reacting with water.

Xiuba disinfectant powder comes in single-component and dual-component forms. Generally, the dual-component powder consists of:
- Agent A: Solid chlorine dioxide precursor (e.g., sodium chlorite).
- Agent B: Acid, which acts as an activator for chlorine dioxide.

The dual-component powder is essentially a simple packaging of raw materials with low technical complexity. However, separating Agents A and B effectively prevents accidental chemical reactions, enhancing safety. The single-component powder involves encapsulating and passivating sodium chlorite to prevent reactions with acid under dry conditions. However, in water, the contact area between sodium chlorite and acid increases, facilitating the reaction. Both single and dual-component powders require activation in a small volume of water before being applied to ponds. In large bodies of water, the acidic environment necessary for chlorine dioxide generation may not form adequately, leading to low yield and wasted resources.

Chlorine dioxide tablets are produced through compression, combining fillers and binders. Effervescent tablets are designed for rapid reaction upon contact with water. And it has the following advantages：

- Convenient for small-dose applications.
- No need to prepare a stock solution—simply toss the tablet into the water.
- Sinks to the bottom, releasing chlorine dioxide for effective bottom disinfection and sediment treatment.

Comparison of Powder and Tablets:
1. Cost: Powder is generally cheaper than tablets.
2. Ease of Use:
- Powder requires mixing Agents A and B to prepare a stock solution. During activation, chlorine dioxide gas may escape, leading to loss and potential health risks for operators due to inhalation.
- Tablets are user-friendly, requiring no activation—just direct application.
3. Application Scope:
- Powder is more effective for surface water disinfection, benefiting upper-layer aquatic life.
- Tablets target bottom-layer disinfection and sediment improvement.

Conclusion:
Considering safety and operational convenience, tablets—especially effervescent tablets—represent the future of solid chlorine dioxide products in aquaculture. For 18 years, Huashi's Xiuba brand has been committed to producing affordable, fast-dissolving, high-yield chlorine dioxide tablets, serving thousands of enterprises and earning an excellent industry reputation.

In 1811, the American scientist Humphry Davy successfully synthesized and collected chlorine dioxide gas. By 1944, chlorine dioxide was being used as a disinfectant in drinking water treatment in the United States. In 1996, China introduced a patented technology titled "Disinfection Process Using Chlorine Dioxide for Preventing and Controlling Infectious Diseases in Aquaculture" (Patent No.: 96121265.9). By 2014, 17 years later, chlorine dioxide (ClO₂) had captured approximately 60% of the market share in aquaculture disinfectants.

Chlorine dioxide is capable of eliminating all microorganisms in aquaculture water, including bacterial propagules, mycobacteria, bacterial spores, fungi, and various viruses. It exhibits strong adsorption and penetration abilities against microbial cell walls, effectively oxidizing sulfhydryl-containing enzymes within cells and rapidly inhibiting microbial protein synthesis to destroy pathogens. However, its destructive power against eukaryotic cells is extremely weak. Fish, as vertebrate animals with eukaryotic cell structures, are largely unaffected because chlorine dioxide cannot penetrate their enzyme systems.

Concerns about the potential hazards of chlorine dioxide often stem from unethical manufacturers who adulterate their products with trichloroisocyanuric acid or dichloroisocyanurate, falsely labeling them as chlorine dioxide. In reality, chlorine dioxide is widely recognized globally as an environmentally friendly disinfectant. It is also one of the most cost-effective disinfectants for aquaculture, with 90% of aquaculture practitioners having experience using it.

Xiuba Chlorine Dioxide Solemnly Promises to Users:
We firmly guarantee that our products never contain trichloroisocyanuric acid or dichloroisocyanurate as adulterants. Our disinfectants are stable, reliable, and of premium quality—you can purchase with confidence!

Chlorine dioxide is a fourth-generation disinfectant. When compared to chlorine-based disinfectants (bleaching powder and trichloroisocyanuric acid), it offers the following advantages:

1. Broad-Spectrum Efficacy: Chlorine dioxide effectively kills bacteria, viruses, fungi, algae, and even protozoa. Its oxidation capacity is **26 times stronger than chlorine gas** (by weight, chlorine gas has 100% available chlorine, while chlorine dioxide has 263%) and **3-4 times stronger than sodium hypochlorite** (the active component in bleaching powder and trichloroisocyanuric acid).

2. Low Dosage & Ease of Use:
- Chlorine dioxide is harmless to the cells of higher animals (e.g., fish).
- Tablets can be directly applied to water, making usage convenient and safe.
- Pathogens do not develop resistance even with frequent use.

3. Stable Performance Under Varied Conditions:
- pH Independence: Works equally well in pH 6–10, unlike chlorine-based disinfectants (e.g., bleaching powder), which lose 50% efficacy at pH 7 and decline further as pH rises.
- **Unaffected by Ammonia & Organic Matter**: Chlorine-based disinfectants react with ammonia/organics to form toxic chloramines and organic amines, reducing efficacy. Chlorine dioxide avoids these byproducts, maintaining consistent performance.

4. Superior Deodorization:
- At 1 mg/L, chlorine dioxide removes **84.3% of hydrogen sulfide** (vs. 35.9% for liquid chlorine), making it far more effective at eliminating foul odors in water.

5. Sediment Oxidation:
- Chlorine dioxide oxidizes iron and manganese in black, odorous sludge, improving pond bottom conditions—a function chlorine-based disinfectants lack.

Xiuba Chlorine Dioxide Disinfectant is not classified as a hazardous chemical under general regulations. However, for export purposes, it falls under “Class 5.1 Oxidizing Substances” (UN Hazard Class).
We possess an official “Chemical Classification Inspection Report” issued by Qingdao Customs (China), which clearly confirms this conclusion.