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Free lookupCAS 77-92-9

Citric acid

CAS 77-92-9 · PubChem CID 311 · C6H8O7 · 192.12 g/mol

Also called citric acid, 2-hydroxypropane-1,2,3-tricarboxylic acid, Citric acid, anhydrous, Aciletten, Anhydrous citric acid.

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as component 1 at 100%.

01GHS classification
GHS pictogram: Irritant
Irritant

Precautionary statement codes

P261, P264+P265, P271, P280, P304+P340, P305+P351+P338, P319, P337+P317, P403+P233, P405, and P501

Regulation (EC) No 1272/2008 of the European Parliament and of the Councilfetched 2026-08-29

H319Causes serious eye irritation
H335May cause respiratory irritation
02Physical and chemical properties
Appearance

Colourless crystals.

ILO-WHO International Chemical Safety Cards (ICSCs)fetched 2026-08-29

Odour

Odorless

Hazardous Substances Data Bank (HSDB)fetched 2026-08-29

Melting point

153 °C

ILO-WHO International Chemical Safety Cards (ICSCs)fetched 2026-08-29

Boiling point

no value printed

unsourced — inference candidate

Flash point

100 °C

ILO-WHO International Chemical Safety Cards (ICSCs)fetched 2026-08-29

Auto-ignition temperature

1850 °F (POWDER)

Hazardous Substances Data Bank (HSDB)fetched 2026-08-29

Flammable limits

no value printed

unsourced — inference candidate

Vapour pressure

no value printed

unsourced — inference candidate

Relative density

no value printed

unsourced — inference candidate

Solubility in water

no value printed

unsourced — inference candidate

Partition coefficient, log Kow

-1.7

ILO-WHO International Chemical Safety Cards (ICSCs)fetched 2026-08-29

Viscosity

no value printed

unsourced — inference candidate

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.

This page is the evidence. The document is the deliverable.

Everything above is free and stays free. For $5 the same sourced values are assembled into a 16-section safety data sheet and a print-ready GHS label carrying your company details in Section 1.

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What we read

Hazardous Substances Data Bank (HSDB), Regulation (EC) No 1272/2008 of the European Parliament and of the Council, ILO-WHO International Chemical Safety Cards (ICSCs).

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