Phosphoric Acid
H₃PO₄·97.994 g/mol·Acids·CID 1004
Food Chemistry
A triprotic acid with three ionizable protons. Used to acidify cola drinks, in rust removal, and as a food additive. The backbone of DNA and RNA contains phosphodiester bonds derived from phosphoric acid.
IUPAC: phosphoric acid
Also known as: 7664-38-2, ORTHOPHOSPHORIC ACID, o-Phosphoric acid, Wc-reiniger, Acidum phosphoricum (+14 more)
Molecular Structure
Molecular Propertiesmass · H-bonds · stereo
Molecular Weight
97.995g/mol
Exact Mass
97.976896Da
Monoisotopic Mass
97.976896Da
XLogP
-2.1
Polar Surface Area
77.8Ų
Complexity
49
Formal Charge
0
H-Bond Donors
3
H-Bond Acceptors
4
Rotatable Bonds
0
Heavy Atoms
5
Stereo Centers
0
Bond Stereo
0
Drug-Likeness (Lipinski's Rule of Five)
✓ 98.0 g/mol
MW ≤ 500
✓ -2.1
LogP ≤ 5
✓ 3
H-bond donors ≤ 5
✓ 4
H-bond acceptors ≤ 10
Passes all rules — good oral bioavailability predicted
GHS Hazard Classification
Danger
Hazards
H314Causes severe skin burns and eye damageH290May be corrosive to metalsH302Harmful if swallowedH318Causes serious eye damageH331Toxic if inhaledH370Causes damage to organsH402Harmful to aquatic lifeH313May be harmful in contact with skinH335May cause respiratory irritationH332Harmful if inhaled
Source: PubChem GHS Classification. Always consult the SDS for handling.
Constituent Elements
Isomers8 compounds with formula H₃PO₄
hydron;phosphate
CID 22486802 · 98.0 g/mol
trideuterio phosphate
CID 3084191 · 101.0 g/mol
hydrogen phosphate;hydron
CID 172995034 · 98.0 g/mol
dihydrogen phosphate;hydron
CID 173209996 · 98.0 g/mol
CID 16213604
CID 16213604 · 102.0 g/mol
CID 71309211
CID 71309211 · 106.0 g/mol
CID 71181
CID 71181 · 99.0 g/mol
dideuterio hydrogen phosphate
CID 166897 · 100.0 g/mol