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Free lookupCAS 7553-56-2

Iodine

CAS 7553-56-2 · PubChem CID 807 · I2 · 253.8089 g/mol

Also called iodine, Molecular iodine, Diiodine, Iodine crystals, Iodine sublimed.

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Opens the builder with Iodine loaded
as component 1 at 100%.

01GHS classification
GHS pictogram: Irritant
Irritant
GHS pictogram: Environmental Hazard
Environmental Hazard

Precautionary statement codes

P261, P271, P273, P280, P302+P352, P304+P340, P317, P321, P362+P364, P391, and P501

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

H312Harmful in contact with skin
H400Very toxic to aquatic life
02Physical and chemical properties
Appearance

Bluish black or dark purple crystals with pungent odour.

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

Odour

Sharp characteristic odor.

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

Melting point

114 °C

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

Boiling point

184 °C

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

Flash point

no value printed

unsourced — inference candidate

Auto-ignition temperature

no value printed

unsourced — inference candidate

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

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.

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

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

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