- Sodium hypophosphite
Sodium hypophosphite (NaPO2H2) is the sodium salt of
hypophosphorous acid . It is a solid at room temperature, appearing as odorless white crystals. It is soluble in water, and easily absorbs moisture from the air.Sodium hypophosphite should be kept in a cool, dry place, isolated from oxidizing materials. It decomposes when heated and produces toxic
phosphine gas, causing irritation to the respiratory tract.Uses
Sodium hypophosphite is mainly used for electroless nickel-plating. With this method, a durable nickel-phosphorus film can coat objects with irregular surfaces, and can widely be used ionics, aviation and the petroleum field.
It also can be used as a food additive.
DEA List I status
The United States
Drug Enforcement Administration designated sodium hypophosphite as a List I chemical under 21 CFR 1310.02 effective November 17,2001 , specifically mentioning the compound together with several other salts of hypophosphorous acid. [http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=2001_register&docid=01-26013-filed 66 FR 52670—52675.] 17 October 2001.] [http://edocket.access.gpo.gov/cfr_2006/aprqtr/21cfr1310.02.htm 37 CFR 1310.02] ]References
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