Free lookupCAS 1305-62-0

Calcium hydroxide

CAS 1305-62-0 · PubChem CID 6093208 · CaH2O2 · 74.09 g/mol

Also called CALCIUM HYDROXIDE, Slaked lime, Hydrated lime, Lime hydrate, Calcium hydrate.

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

01GHS classification

Corrosive

Irritant

Signal word

Danger

European Chemicals Agency (ECHA) — fetched 2026-08-28

Precautionary statement codes

P260, P261, P264, P264+P265, P271, P280, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P319, P321, P332+P317, P362+P364, P363, P403+P233, P405, and P501

European Chemicals Agency (ECHA) — fetched 2026-08-28

H314Causes severe skin burns and eye damage

European Chemicals Agency (ECHA) — fetched 2026-08-28

H315Causes skin irritation

European Chemicals Agency (ECHA) — fetched 2026-08-28

H318Causes serious eye damage

European Chemicals Agency (ECHA) — fetched 2026-08-28

H335May cause respiratory irritation

European Chemicals Agency (ECHA) — fetched 2026-08-28

02Physical and chemical properties

Appearance

Colourless crystals or white 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

1076 °F (decomposes) (loses water)

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

Boiling point

Decomposes

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

Flash point

/Calcium Hydroxide is/ non flammable

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

Auto-ignition temperature

Not flammable (USCG, 1999)

CAMEO Chemicals — fetched 2026-08-28

Flammable limits

/Calcium Hydroxide is/ non flammable

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

Vapour pressure

0 mmHg (approx) (NIOSH, 2024)

CAMEO Chemicals — fetched 2026-08-28

Relative density

no value printed

unsourced — inference candidate

Solubility in water

Solubility in water: none

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.

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), European Chemicals Agency (ECHA), ILO-WHO International Chemical Safety Cards (ICSCs), CAMEO Chemicals.

13 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