Sodium Hypophosphite
CAS Number: 7681-53-0
Molecular Weight: 87.98
EC Number: 231-669-9
Product Name: Sodium Hypophosphite
Alias: Sodium phosphinate
Chemical Formula: NaH2PO2・H2O
Linear Formula: NaPH2O2
Sodium hypophosphite is soluble in water and easily absorbs moisture from the air.
Sodium hypophosphite should be stored in a cool, dry place, isolated from oxidizing agents.
Sodium Hypophosphite is also used as a catalyst for polymerization reactions and in the glass fiber industry.
SHP acts as a stabilizer for polymers during thermal processing and extrusion.
Sodium Hypophosphite is also used on the surface of non-metals such as plastics, ceramics, glass, etc.
The film has surface hardness and wear resistance.
Sodium Hypophosphite is widely used in electronics, aviation mechanisms and petroleum fields.
Sodium Hypophosphite is used as an interface activator, a MW moderator, a thermo-stabilizer for synthetic resins.
Sodium Hyposphosphite is an electron source used for resin regeneration of Ion Exchange Resins.
Sodium hypophosphite (NaPO2H2, also known as sodium phosphinate) is the sodium salt of hypophosphorous acid and is usually encountered as the monohydrate, NaPO2H2·H2O.
Sodium hypophosphite is a solid at room temperature and appears as odorless white crystals.
Sodium Hypophosphite is mainly used as a reductant in the chemical coating process.
A dense and uniform nickel phosphorus film can be achieved on both large equipment and small components, as well as on articles with complex external shapes, such as convex-concave lines or internal walls with deep grooves.
Sodium hypophosphite is a white crystalline, hydroscopic property and liquid; easily soluble in water and alcohol.
Sodium hypophosphite will explode when in contact with oxidants.
When heated above 200ºC, it rapidly decomposes, releasing hydrogen phosphide.
Sodium hypophosphite (NaH2PO2) is a chemical reductant obtained from the reaction of phosphorus with caustic soda and lime.
Sodium hypophosphite is mainly used as a catalyst in electrochemical nickel plating applications, a whitening agent and in the glass fiber industry.
Areas of use of sodium hypophosphite:
Sodium hypophosphite is mainly used for electroless nickel plating (Ni-P), by this method a durable nickel-phosphorus film can coat objects with irregular surfaces, such as avionics, aviation and oil field.
Sodium hypophosphite has the ability to reduce nickel ions in solution to metallic nickel on metal surfaces and also on plastic surfaces.
The latter requires activating the substrate with fine palladium particles.
The resulting nickel deposit contains up to 15% phosphorus.
Sodium hypophosphite can be used as a food additive.
Sodium hypophosphite can also be used as interface activator, molecular weight regulator and heat stabilizer of synthetic resin.
SHP is used in the following products: pH regulators and water treatment products, polymers, metal surface treatment products, non-metal surface treatment products and welding & brazing products.
Sodium hypophosphite has an industrial use that results in the production of another substance (use of intermediates).
Sodium hypophosphite is used in the manufacture of chemicals, plastic products, rubber products, electrical, electronic and optical equipment, machinery and vehicles, textiles, leather or fur, wood and wood products, pulp, paper and paper products, and fabricated metal products.
Sodium hypophosphite is mainly used as a reducing agent for electroless plating.
For large equipment and small objects that cannot be electroplated, or for complex shape with concave-convex lines, or for the inner wall of the deep hole, or for surface hardness and wear resistance, or for the surface metallization of plastic ceramics, glass, quartz and other non-metallic materials, dense and uniform Ni-P coating can be obtained, which is better than electroplating.
Sodium hypophosphite is widely used in electronics, aviation, machinery, petroleum and other industries.
Release of this substance to the environment may occur from industrial use of SHP: as a processing aid, as an intermediate step in the further manufacturing of another substance (use of intermediates), in processing aids in industrial plants, as a processing aid, as a formulation in materials and in the production of articles.
Applications:
-Electroless plating agent: corrosion resistance, wear resistance, uniform density, through electroless plating metal surface with solid nickel phosphorus alloy coating,
- Replace stainless steel materials widely used in electronics, machinery, petroleum, chemical, aviation, navigation, food and medical and other industries.
-Metallizes the surface of non-metallic materials such as plastic, ceramic, glass and quartz.
-water treatment, preparation of various industrial preservatives and oilfield scale inhibitors.
-food, industrial boiler water additives.
-Can be used as catalyst, stabilizer for chemical reaction.
-Can be used as antioxidant, decolorizing agent, dispersant, textile finishing and pharmaceutical industries.
Sodium Hypophosphite Usage Areas:
Electroless Nickel (EN) – Sodium Hypophosphite (SHP) acts as a reducing agent to provide the electrons needed for the EN process.
The EN process ensures uniform coating thickness not only on metal objects, but also on plastics and ceramics.
Chemical Intermediate – Sodium Hypophosphite, which is used as a raw material in the manufacture of other products including Hypophosphorous Acid.
Sodium Hypophosphite can be used in synthetic organic chemistry, particularly in deamination via reduction of diazo derivatives.
Reducing Agent – SHP can be used as a reducing agent or antioxidant in chemical processing.
Analytical Reagent – Sodium Hypophosphite can be used as analytical reagent.
Polymerization Catalyst – Sodium Hypophosphite used as a catalyst in some polymerization reactions.
Polymer Stabilizer – SHP is used as a stabilizer to prevent degradation of polymers during extrusion or other heated processes.
Flame Retardant – Sodium Hypophosphite can be used as a partial flame retardant.
Sodium Hypophosphite properties:
-High quality
-Highly effective
-Airtight packaging
Features:
-Formula: NaPO2H2
-Molar mass: 87.98 g/mol
-Density: 800 kg/m³
- Melting point: 90 °C
In recent years, Sodium hypophosphite has been widely used in the field of phosphorus flame retardant and cement additive, which plays an important role in improving the rapid drying rate and hardness of concrete.
Consumer Uses:
Sodium hypophosphite is used in the following products: coatings, fillers, putties, plasters, modeling clay, and cosmetics and personal care products.
Other releases of this substance to the environment are likely to occur: indoor use as processing aid and outdoor use as processing aid.