Ammonium phosphate dibasic

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Ordorless, colorless crystals that is used to fireproof textiles, paper, wood, and baskets. Ammonium phosphate dibasic is also used as a flux for soldering tin, copper, brass, and zinc.

Synonyms and Related Terms

secondary ammonium phosphate; diammonium hydrogen phosphate

Chemical structure

Ammonium phosphate dibasic.jpg

Other Properties

Soluble in water forming solution with pH about 8.

Insoluble in alcohol, acetone.

Used for the detection of magnesium (Anrnold 1994).

Composition (NH4)2HPO4
CAS 7783-28-0
Density 1.62
Molecular Weight mol. wt. = 132.06

Hazards and Safety

Harmful if swallowed. Contact causes irritation.

Mallinckrodt Baker: MSDS

Additional Information

° Arnold, Studies in Conservation (29) 1994

Sources Checked for Data in Record

  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 576
  • External source or communication Comment: detection of magnesium - Arnold, Studies in Conservation (29) 1994