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Free lookupCAS 50-81-7

L-Ascorbic acid

CAS 50-81-7 · PubChem CID 54670067 · C6H8O6 · 176.12 g/mol

Also called l-ascorbic acid, ascorbic acid, vitamin C, L(+)-Ascorbic acid, Ascoltin.

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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

Odourless white-to-slightly-yellow crystals or powder.

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

Odour

Odorless

Hazardous Substances Data Bank (HSDB)fetched 2026-08-28

Melting point

190-192 °C (some decomposition)

Hazardous Substances Data Bank (HSDB)fetched 2026-08-28

Boiling point

no value printed

unsourced — inference candidate

Flash point

no value printed

unsourced — inference candidate

Auto-ignition temperature

380 °C

Hazardous Substances Data Bank (HSDB)fetched 2026-08-28

Flammable limits

no value printed

unsourced — inference candidate

Vapour pressure

no value printed

unsourced — inference candidate

Relative density

Density (at 25 °C): 1.65 g/cm³

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

Solubility in water

Solubility in water, g/100ml at 20 °C: 33 (freely soluble)

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

Partition coefficient, log Kow

no value printed

unsourced — inference candidate

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.

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What we read

ILO-WHO International Chemical Safety Cards (ICSCs), Hazardous Substances Data Bank (HSDB).

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