SHEET /m/phosphoric-acid · PubChem CID 1004 · CAS 7664-38-2 · REV 2026.07
Phosphoric acid
from sourceH3O4P · 97.995 g/mol
naval jelly · Acide phosphorique · Acido fosforico · Acidum phosphoricum
What is Phosphoric acid?
The tartness in cola, and the reason a can of dark soda tastes sharp rather than merely sweet. Industrially it is also a rust converter. Found in soft drinks. from source
Fig. 1 · 2D structure RDKit
OP(=O)(O)OWhere you'll find it
Curated by MoleculeFinder from source
The dose makes the poison inferred
A reported rat oral LD50 for Phosphoric acid is 1,530 mg/kg, the dose lethal to half the animals tested. Scaled by body mass alone:
“The dose makes the poison” is a cross-species estimate shown as neutral science, not a threshold anyone should act on. Real toxicity depends on the person, not body mass alone.
Toxicity & hazards
Toxicity · LD50
1,530 mg/kg · low toxicity · LD50 rat oral from source
The dose lens above scales this to a body weight.
1 more reported value
- 2,740 mg/kgLD50 · dermal · rabbit
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