Free lookupCAS 7782-50-5

Chlorine

CAS 7782-50-5 · PubChem CID 24526 · Cl2 · 70.90 g/mol

Also called CHLORINE, Molecular chlorine, dichlorine, Bertholite, Chlorine gas.

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01GHS classification

Oxidizer

Compressed Gas

Acute Toxic

Environmental Hazard

Signal word

Danger

Regulation (EC) No 1272/2008 of the European Parliament and of the Council — fetched 2026-08-28

Precautionary statement codes

P220, P244, P261, P264, P264+P265, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P316, P319, P321, P332+P317, P337+P317, P362+P364, P370+P376, P391, P403, P403+P233, P405, and P501

Regulation (EC) No 1272/2008 of the European Parliament and of the Council — fetched 2026-08-28

H270May cause or intensify fire; oxidizer

Regulation (EC) No 1272/2008 of the European Parliament and of the Council — fetched 2026-08-28

H315Causes skin irritation

Regulation (EC) No 1272/2008 of the European Parliament and of the Council — fetched 2026-08-28

H319Causes serious eye irritation

Regulation (EC) No 1272/2008 of the European Parliament and of the Council — fetched 2026-08-28

H331Toxic if inhaled

Regulation (EC) No 1272/2008 of the European Parliament and of the Council — fetched 2026-08-28

H335May cause respiratory irritation

Regulation (EC) No 1272/2008 of the European Parliament and of the Council — fetched 2026-08-28

H400Very toxic to aquatic life

Regulation (EC) No 1272/2008 of the European Parliament and of the Council — fetched 2026-08-28

02Physical and chemical properties

Appearance

Greenish-yellow compressed liquefied gas with pungent odour.

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

Odour

Suffocating odor

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

Melting point

-101 °C

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

Boiling point

-34 °C

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

Flash point

no value printed

unsourced — inference candidate

Auto-ignition temperature

Not flammable (USCG, 1999)

CAMEO Chemicals — fetched 2026-08-28

Flammable limits

Nonflammable Gas, but a strong oxidizer.

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

Vapour pressure

Vapor pressure, kPa at 20 °C: 673

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

Relative density

2.898 g/L

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

Solubility in water

no value printed

unsourced — inference candidate

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.

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

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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), CAMEO Chemicals, The National Institute for Occupational Safety and Health (NIOSH).

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

04Also in the ledger

Browse every chemical in the ledger · What a GHS safety data sheet contains