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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 485258Generated: October 23, 2026

Ammonia → Phosphorus oxide (P4O10)

https://huagongshe.com/en/reaction/485258

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmoniaHCID 222—
ReactantSulfuric AcidHCID 1118—
ReactantPhosphorus oxide (P4O10)HCID 14812—
SolventWaterHCID 962—
ProductPhosphorus oxide (P4O10)HCID 1481246.4%
ProductDiammonium hydrogen phosphateHCID 24540—

Reaction Steps

Anhydrous ammonia and sulfuric acid were also added. The ratios of P2O5, NH3 and H2SO4 were about 100:11.26:3.84. Reaction of the materials yielded a diammonium phosphate product with an analysis of 18.1% nitrogen, 46.4% P2O5, and 1.2% free water after drying. This analysis meets requirements for both U.S. and foreign sale as fertilizer grade diammonium phosphate.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04536378
Source datasetuspto-grants-1985_08
ORD IDord-c43b906abc3b4b608ecbc276d761861e
Source noteuspto-grants-1985_08