Electronic Grade Anhydrous Sodium Sulfate
Synonymses: Electronics-Grade High-Purity Sodium Carbonate, Ultra-High-Purity Anhydrous Sodium Sulfate, Semiconductor-Grade Anhydrous Sodium Sulfate
| Item | Details |
| CAS No. | 7757-82-6 |
| Molecular Formula | Na2SO4 |
| Molecular Weight | 142.04 |
| Appearance | Pure white ultra-fine clean crystalline powder, free of black spots, yellow impurities and agglomerated particles, no visible suspended matter |
| Melting Point | 884℃ |
| Solubility | Highly soluble in ultra-pure water, aqueous solution nearly neutral; insoluble in organic solvents such as ethanol and acetone |
| Stability | Stable in dry environment at room temperature, low hygroscopicity; metathesis reaction occurs with strong acids; store sealed, dry and away from light to avoid contamination by dust and heavy metal impurities |
| HS Code | 2833110000 (Anhydrous sodium sulfate) |
| Packing | Inner anti-static dust-free PE vacuum film + clean aluminum foil composite bag / clean plastic drum; standard specifications: 1kg, 5kg, 25kg; filled with nitrogen inside packaging to isolate moisture; outer package marked with special labels for dust-proof, moisture-proof and anti-pollution; ordinary industrial woven bags are forbidden |
| Storage Conditions | Store in Class 1000 / Class 100 dust-free constant temperature warehouse, ambient temperature 25±5℃, relative humidity ≤60% RH; fully sealed to isolate water vapor, dust and heavy metal pollution sources; do not mix with strong acids, heavy metal salts and industrial raw materials; unpack only in dust-free clean environment; seal remaining materials with nitrogen to prevent moisture absorption |
| Personal Protection | Special dust-free clean suit for dust-free workshop, nitrile dust-free gloves, goggles and low-dust dust mask; avoid inhalation of dust and prolonged skin contact; keep operation area fully ventilated and dust-free, do not unpack in ordinary workshops or open air |
| Waste Disposal | Classify and recycle electronic clean waste; neutralize waste liquid before compliant discharge; uniformly recycle waste clean packaging as dust-free hazardous waste; do not discard arbitrarily or discharge directly into sewers or natural water bodies |
| Application Fields | Primary high-end application: semiconductor wafer manufacturing; PCB and electronic electroplating industry; LCD/OLED flat panel display; photovoltaic silicon wafer processing; lithium / sodium ion batteries; synthetic raw material for electronic high-purity chemicals; optical glass / electronic ceramics manufacturing; precision laboratory analytical reagents |
