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Sodium Hypophosphite H2NaO2P CAS:7681-53-0 - Quality Product from China Suppliers and Factory
Sodium hypophosphite is a colorless monoclinic crystal or a pearl-like lustrous crystal or white crystalline powder. It is hygroscopic, odorless and salty in taste. It is soluble in water, ethanol, glycerol, slightly soluble in ammonia and ammonia water, and insoluble in ether. The aqueous solution is alkaline. In the dry state, it is relatively stable.
Safety Warning: When heated to above 200°C, it rapidly decomposes and releases phosphine hydrogen gas, which is highly toxic and self-igniting. It is a strong reducing agent and can reduce metals such as gold, silver, mercury, nickel, chromium, and cobalt from salts to their metallic states. It will explode when exposed to strong heat or mixed with oxidants such as potassium chlorate. At normal pressure, heating and evaporation of the sodium hypophosphite solution will also cause an explosion. Therefore, evaporation should be carried out under reduced pressure.
In the United States, sodium hypophosphite, hypophosphorous acid and several other types of hypophosphates are classified as first-class controlled precursor chemicals and are subject to regulation.
What are the physical properties of sodium hypophosphite?
Sodium hypophosphite is a colorless monoclinic crystal, a pearl-like lustrous crystal, or a white crystalline powder. It is hygroscopic, odorless, and has a salty taste.
What is the solubility of sodium hypophosphite?
It is soluble in water, ethanol, and glycerol. It is slightly soluble in ammonia and ammonia water, and completely insoluble in ether.
What happens when sodium hypophosphite is heated?
When heated above 200°C, it rapidly decomposes and releases phosphine hydrogen gas, which is highly toxic and capable of self-igniting.
How does sodium hypophosphite react with metals?
As a strong reducing agent, it can reduce metals such as gold, silver, mercury, nickel, chromium, and cobalt from their salt states to their metallic states.
Why must sodium hypophosphite solution be evaporated under reduced pressure?
At normal pressure, heating and evaporating the sodium hypophosphite solution can cause an explosion. Evaporating under reduced pressure prevents this hazard.
Is sodium hypophosphite regulated in the United States?
Yes, in the United States, sodium hypophosphite, hypophosphorous acid, and several other hypophosphates are classified as first-class controlled precursor chemicals and are subject to strict regulation.