SHEET /m/disodium-phosphate · PubChem CID 24203 · CAS 7558-79-4 · REV 2026.07
Disodium phosphate from source
HNa2O4P · 141.959 g/mol
Sodium phosphate dibasic · Disodium hydrogen phosphate · Disodium hydrogenorthophosphate · Acetest
chemical compound
Fig. 1 · 2D structure RDKit
OP(=O)([O-])[O-].[Na+].[Na+]
Where you'll find it
Not yet mapped to everyday foods or products.
The dose makes the poison inferred
A reported rat oral LD50 for Disodium phosphate is 17,000 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
17,000 mg/kg · very low toxicity · LD50 rat oral from source
The dose lens above scales this to a body weight.
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