Sodium hypophosphite monohydrate
Description
Sodium hypophosphite monohydrate (CAS 10039-56-2) is the stable, water-soluble hydrated salt form of sodium hypophosphite, supplied commercially for use as a reducing agent and catalyst component across multiple industrial sectors.
It functions primarily as a chemical reducing agent in electroless metal plating and as a process aid in textile and polymer manufacturing. In electronics manufacturing, it acts as the primary reducing agent in electroless nickel plating baths.
This material deposits uniform nickel coatings onto substrates regardless of geometry. Textile processors use it as a catalyst activator in flame-retardant finishing treatments, particularly in durable press and phosphorus-based flame-retardant systems.
These systems are frequently applied to cotton fabrics for safety. In pharmaceutical manufacturing, it serves as an antioxidant stabilizer and reducing agent in certain formulations where oxygen-sensitive active ingredients require protection.
Water treatment applications include its use as a sequestering agent to control metal ion activity and inhibit scale formation in industrial process water systems. This ensures the longevity and efficiency of industrial equipment.
Sodium hypophosphite monohydrate is supplied as a white crystalline powder or granules. Standard commercial grades include technical grade and pharmaceutical or reagent grade, with purity levels typically at 98% or higher.
Bulk supply is available in bags or drums, with pharmaceutical-grade material supplied to USP or BP specifications where required. This ensures compliance with international quality and safety standards.
Physical Properties
| Melting Point | 90°C |
| Density | 0.8 |
| Appearance | White crystals |
| Color | Colorless crystalline |
| Odor | Odorless |
| Form | Solid |
| Water Solubility | 1000 g/L (20 ºC) |
| pH | 6-8 (20℃, 5%) |
Trade & Regulatory
| HS Code | 28351000 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Documentation
Other Names
4VN69WUP7N|RefChem:183942|Fosfornan sodny|Phosphinic acid, sodium salt, monohydrate|Sodium hypophosphite hydrate|Sodium phosphenite hydrate|Phosphinic acid, sodium salt, hydrate (1:1:1)
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