Ammonium phosphinate

Ammonium phosphinate
Names
	Other names Ammonium hypophosphite
Identifiers
CAS Number	7803-65-8;
3D model (JSmol)	Interactive image;
ECHA InfoCard	100.029.333
EC Number	232-266-0;
CompTox Dashboard (EPA)	DTXSID20884440 ;
	InChI InChI=1S/H3N.H3O2P/c;1-3-2/h1H3;3H2,(H,1,2) Key: AQQVTZBWWYVEGR-UHFFFAOYSA-N;
	SMILES [PH2](=O)O.N;
Properties
Chemical formula	H6NO2P
Molar mass	83.027 g·mol−1
Appearance	colorless crystals
Density	1.634 g/cm3
Melting point	200
Solubility in water	soluble
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P305, P338, P351
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Ammonium phosphinate is a chemical compound with the chemical formula NH₄PH₂O₂.^[3]^[4] This is a salt of ammonium and phosphoric acid.

Synthesis

The effect of ammonia solution on phosphoric acid solution:

HPH₂O₂ + NH₃ → NH₄PH₂O₂

Physical properties

Ammonium phosphonate forms colorless crystals of rhombic system, spatial group C mma, cell parameters a = 0.757 nm, b = 1.147 nm, c = 0.398 nm, Z = 4.^[5]

The compound is soluble in water and ethanol, but insoluble in acetone.^[6]

Uses

The compound is usually used as a catalyst for the production of polyamide.^[2]

References

^ "Ammonium hypophosphite". Sigma Aldrich. Retrieved 2 December 2024.
^ ^a ^b ^c "Ammonium phosphinate | 7803-65-8, Ammonium phosphinate Formula". ECHEMI. Retrieved 2 December 2024.
^ Russian Chemical Reviews. Russian Academy of Sciences, The Royal Society of Chemistry and Turpion Limited. 1980. p. 49. Retrieved 2 December 2024.
^ Emergency Planning and Community RightToKnow Act section 313 reporting guidance for the textile processing industry. DIANE Publishing. p. C-14. ISBN 978-1-4289-0164-3. Retrieved 2 December 2024.
^ Weakley, T. J. R. (18 August 2011). "The Crystal Structures of Ammonium Phosphinate (Hypophosphite) and Guanidinium Ph08phinate, and the Cell Parameters of Hydrazinium(2+) Phosphinate". Journal of the Chemical Society of Pakistan. 1 (2): 37. Retrieved 2 December 2024.
^ Armarego, W. L. F. (27 August 2022). Purification of Laboratory Chemicals: Part 2 Inorganic Chemicals, Catalysts, Biochemicals, Physiologically Active Chemicals, Nanomaterials. Butterworth-Heinemann. p. 8. ISBN 978-0-323-95828-8. Retrieved 2 December 2024.

[1] "Ammonium hypophosphite". Sigma Aldrich. Retrieved 2 December 2024.

[E-2] "Ammonium phosphinate | 7803-65-8, Ammonium phosphinate Formula". ECHEMI. Retrieved 2 December 2024.

[3] Russian Chemical Reviews. Russian Academy of Sciences, The Royal Society of Chemistry and Turpion Limited. 1980. p. 49. Retrieved 2 December 2024.

[4] Emergency Planning and Community RightToKnow Act section 313 reporting guidance for the textile processing industry. DIANE Publishing. p. C-14. ISBN 978-1-4289-0164-3. Retrieved 2 December 2024.

[5] Weakley, T. J. R. (18 August 2011). "The Crystal Structures of Ammonium Phosphinate (Hypophosphite) and Guanidinium Ph08phinate, and the Cell Parameters of Hydrazinium(2+) Phosphinate". Journal of the Chemical Society of Pakistan. 1 (2): 37. Retrieved 2 December 2024.

[6] Armarego, W. L. F. (27 August 2022). Purification of Laboratory Chemicals: Part 2 Inorganic Chemicals, Catalysts, Biochemicals, Physiologically Active Chemicals, Nanomaterials. Butterworth-Heinemann. p. 8. ISBN 978-0-323-95828-8. Retrieved 2 December 2024.

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