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Free lookupCAS 7664-38-2

Phosphoric acid

CAS 7664-38-2 · PubChem CID 1004 · H3O4P · 97.995 g/mol

Also called Phosphoric acid, ORTHOPHOSPHORIC ACID, o-Phosphoric acid, Wc-reiniger, Acidum phosphoricum.

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01GHS classification

No harmonised GHS classification is published for this substance in the sources we read. We will not guess one.

02Physical and chemical properties
Appearance

no value printed

unsourced — inference candidate

Odour

no value printed

unsourced — inference candidate

Melting point

no value printed

unsourced — inference candidate

Boiling point

no value printed

unsourced — inference candidate

Flash point

no value printed

unsourced — inference candidate

Auto-ignition temperature

Not flammable (USCG, 1999)

CAMEO Chemicalsfetched 2026-08-28

Flammable limits

Noncombustible Solid

The National Institute for Occupational Safety and Health (NIOSH)fetched 2026-08-28

Vapour pressure

Vapor pressure, Pa at 25 °C:

ILO-WHO International Chemical Safety Cards (ICSCs)fetched 2026-08-28

Relative density

1.9 g/cm³

ILO-WHO International Chemical Safety Cards (ICSCs)fetched 2026-08-28

Solubility in water

Solubility in water: miscible

ILO-WHO International Chemical Safety Cards (ICSCs)fetched 2026-08-28

Partition coefficient, log Kow

-0.77 (estimated)

ILO-WHO International Chemical Safety Cards (ICSCs)fetched 2026-08-28

Viscosity

40 mm²/s at 20 °C

ILO-WHO International Chemical Safety Cards (ICSCs)fetched 2026-08-28

03Toxicological information

No published acute toxicity value was found for this substance in the sources we read. On a document, Section 11 would print unsourced — inference candidate rather than an estimate.

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What we read

CAMEO Chemicals, ILO-WHO International Chemical Safety Cards (ICSCs), The National Institute for Occupational Safety and Health (NIOSH).

14 sourced records for this substance are in the ledger. Values dated more than 30 days ago are re-fetched on the next document.