About: pyrophosphoric acid

Premodifier: pyrophosphoric
Head noun: acid

Same concepts
http://dbpedia.org/resource/Pyrophosphoric_acid

Broader concepts

label	provenance	confidence
polyphosphoric acid	isap:170897273	0.815876
acid	isap:170897830	0.630974
salt	isap:169050802	0.533348

Narrower concepts

label	provenance	confidence