Sodium Sulfide is a strategic product of Hongjian Chemical in the field of sulfur chemistry. Known for its strong reducibility and polysulfide formation characteristics, it plays a key role in both traditional industrial upgrades and emerging technological fields. The company adopts the advanced "coal powder reduction of sodium sulfate" process, achieving full product coverage from industrial grade to high-end application grade through precise control of reaction conditions and product composition.

❋ Aliases: Sodium Sulfuret, Stinky Soda
❋ English Name: Sodium Sulfide
❋ Chemical Formula:Na₂S·xH₂O (x=0,3,9)
❋ Molecular Weight:78.04 (anhydrous), 240.18 (nonahydrate)
❋ CAS Number:1313-82-2 (anhydrous), 1313-84-4 (nonahydrate)

Key Properties: Strong reducibility, alkalinity, polysulfide formation capability, easily oxidized

Hongjian Chemical Sodium Sulfide Advanced Application Scenarios

1. "Color Engineering Architect" in High-end Pigment Industry

• Ultrafine sodium sulfide developed by Hongjian used in cadmium series pigment synthesis improves product color purity to 98.5%, particle size distribution controlled at 0.2-0.5μm

• Special sodium sulfide for novel quantum dot preparation achieves quantum yield breakthrough of 85%, FWHM controlled below 25nm

2. "Sulfur Source Supply Expert" in New Energy Materials

• Cathode material precursor for lithium-sulfur batteries with stable sulfur content of 51-53%, initial Coulombic efficiency improved to 92%

• Sodium sulfide cathode material for sodium-ion batteries achieves specific capacity of 500mAh/g, cycle life breakthrough 1000 cycles

3. "Heavy Metal Terminator" in Environmental Treatment

• Advanced industrial wastewater treatment agent achieves heavy metal removal rate ≥99.95%, effluent concentration meets surface water Class III standards

• Hazardous waste stabilization chemical reduces heavy metal leaching toxicity by 98%, meeting safe landfill standards

4. "Precision Reduction Master" in Special Synthesis

• Special sodium sulfide for pharmaceutical intermediate synthesis improves selective reduction yield to 95%, by-products reduced by 80%

• Reduction of aromatic nitro compounds achieves product purity ≥99.5%, iron ion content ≤5ppm

Technological Breakthroughs and Sustainable Development

Production Process Innovation

• Developed new "fluidized bed reduction" process improving reaction efficiency by 50%, reducing energy consumption by 35%

• Polyhydrate conversion technology enables flexible production of anhydrous, trihydrate, and nonahydrate products

Purity Improvement Breakthrough

• Electronic-grade sodium sulfide purity breakthrough 99.9%, total heavy metals ≤10ppm

• Pharmaceutical-grade products pass GMP audit, sodium thiosulfate content ≤0.1%

Environmental Technology Upgrade

• Established exhaust gas resource recovery system with SO₂ recovery rate ≥99%, converted to sulfuric acid for reuse

• Zero-discharge technology for process wastewater achieves water recycling rate of 98%

Intelligent Manufacturing Application

• Adopts machine vision for product color recognition, automatically adjusting process parameters

• Established digital twin system with product key indicator prediction accuracy ≥97%

Hongjian Technological Advantages

Quality Advantages

• Flake sodium sulfide content ≥60%, water insolubles ≤0.05%

• Granular product particle size 2-4mm, bulk density 1.2g/cm³, excellent fluidity

Stability Assurance

• Special antioxidant packaging extends product shelf life to 12 months

• Automated warehouse monitoring system for real-time temperature and humidity tracking

Application Support

• Provides on-site technical services to guide customers in process optimization

• Establishes product application database for customized solutions