Product Detailed Introduction: 4Na₂SO₄ · 2H₂O₂ · NaCl (Sodium
Sulfate-Hydrogen Peroxide-Sodium Chloride Adduct)
1. Product Overview
Sodium Sulfate-Hydrogen Peroxide-Sodium
Chloride Adduct, commonly known as Solid
Hydrogen Peroxide, is a high-value-added inorganic fine chemical with the
molecular formula 4Na₂SO₄ · 2H₂O₂ · NaCl . This product is a stable ternary adduct formed by the
reaction of sodium sulfate and sodium chloride in an aqueous hydrogen peroxide
solution . It perfectly transforms liquid hydrogen peroxide into a mild
solid form, solving the problems of liquid H₂O₂ such as easy
decomposition, explosion hazard, and transportation risks .
2. Physicochemical Properties
- Appearance: White prismatic
crystalline powder .
- Active Oxygen Content: Theoretical
active oxygen (as H₂O₂) content is approximately 8%~10% .
- Thermal Stability: This adduct
exhibits extremely high thermal stability, with a thermal decomposition
temperature of 180°C (356°F), much higher than the 63°C
of ordinary sodium sulfate-hydrogen peroxide adducts, allowing for safe
storage and transportation under normal conditions .
- Aqueous Solution Characteristic: It
is easily soluble in water. Its saturated aqueous solution is neutral
(pH 6-8) and mild, overcoming the high alkalinity disadvantages
of sodium percarbonate and perborate, making it friendlier to fabrics and
skin .
- Crystal Structure: It possesses a
unique tunnel-like crystal structure (channel structure) where hydrogen
peroxide molecules are enclathrated within the crystal lattice, resulting
in excellent storage stability .
3. Production Process
The product is typically synthesized by
reacting sodium sulfate (salt cake), sodium chloride (salt), and hydrogen
peroxide under specific temperature and concentration conditions. Preferred
process conditions reported in patents and literature include: reaction
temperature 0~50°C, hydrogen peroxide concentration in the reaction
solution 70-800 g/L, and sodium chloride concentration 20-300
g/L . By controlling the crystallization process, high-purity adduct
crystals can be obtained. The filtrate can be recycled, resulting in a
production process with virtually no "three wastes" emissions .
4. Core Advantages
- Safety & Stability:
Non-flammable and non-explosive compared to liquid hydrogen peroxide; more
stable than sodium percarbonate under high temperature and high humidity
conditions .
- Environmentally Friendly:
Decomposition products are sodium sulfate, sodium chloride, water, and
oxygen – all non-toxic and harmless, causing no secondary pollution .
- Neutral & Mild: Its aqueous
solution is close to neutral, offering a wide range of applications,
especially where alkalinity is undesirable.
- Readily Available Raw Materials:
The main raw materials, sodium sulfate and sodium chloride, are abundant
and low-cost .
5. Main Applications
- Detergent Industry: As a neutral
oxygen bleach additive in laundry powders or tablets, it releases
active oxygen even at low temperatures to effectively remove stains,
sanitize, and brighten fabrics without fiber damage .
- Textile & Dyeing: Used
for gentle bleaching of cotton, linen, and synthetic
fibers, replacing sodium hypochlorite to prevent fiber damage and achieve
a better hand feel after bleaching .
- Aquaculture & Environmental Protection: As an oxygenator and disinfectant
water purifier. It slowly releases oxygen when added to water,
increasing dissolved oxygen levels to prevent fish suffocation. The
released active oxygen also provides sterilization and disinfection,
improving water quality .
- Organic Synthesis: Serves as
a mild oxidizing agent in chemical production for
halogenation reactions or the selective oxidation of sulfides to
sulfoxides or sulfones .
- Disinfection & Hygiene: Used
for sterilizing food processing equipment and public spaces, or as a
component in medical disinfectants .
- Personal Care & Cosmetics: Used
as an oxidizing or bleaching agent in hair dyes, tooth powders, and oral
care products .
评论
发表评论