Calcium dihydroxide

Basic Information

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CAS Number

1305-62-0

Molecular Formula

H2CaO2

Molecular Weight

74.09 g/mol

Chemical Classification

Basic Chemical Raw Materials Inorganic Chemicals Acids

Basic Physical Properties

Melting Point

580 ºC

Boiling Point

2850 ºC

Water Solubility

1.65 g/L (20 ºC)

Flash Point

/Calcium Hydroxide is/ non flammable

Solubility

1.7g/l

Refractive Index

Index of refraction: 1.574 (alpha), 1.545 (beta)

SMILES

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[Ca+2].[OH-].[OH-]

InChI

InChI=1S/Ca.2H2O/h;2*1H2/q+2;;/p-2

InChIKey

AXCZMVOFGPJBDE-UHFFFAOYSA-L

LogP

-0.35360

Complexity

Safety Information

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GHS Hazard Pictograms

H318

Hazard Statement

H318 Causes serious eye damage
Serious eye damage/eye irritation

Hazard Class

Class 8 Class 8

Stability

Stable. Incompatible with strong acids.

Sensitiveness

Air Sensitive

Toxicity

LD50 orally in rats: 7.34 g/kg (Smyth)

Synonyms & References

English

CALCIUM HYDRATE
CALCIUM HYDROXIDE
CALCIUM HYDROXIDE SOLUTION
CALCIUM HYDROXIDE TS
CALCIUM (II) HYDROXIDE
CALCIUM OXIDE, HYDRATED
CAUSTIC LIME
HYDRATED LIME
LIME HYDRATE
LIME (HYDRATED)
LIME, SLAKED
LIME WATER
SLAKED LIME
agriculturallime
Bell mine
biocalc
Ca(OH)2
Calcium hydroxide (Ca(OH)2)
CalciuM Hydroxide (AS)
calcium,dihydroxide
Caustic liMe
Potassium dihydrogen phosphate
calvit
limbux
limoid
Edelwit
Kemikal
Trulime
limemilk
calcium hydrate；caustic lime；slaked lime；lime hydrate
bellmine

MDL Number

MFCD00010901

Customs Code

2825909000

FAQ

What is Calcium dihydroxide (CAS: 1305-62-0)?

Calcium dihydroxide (CAS: 1305-62-0) is a chemical compound with the formula Ca(OH)₂. It appears as a white, odorless powder and is highly soluble in water. This compound exhibits strong alkaline properties and is commonly used in industrial and chemical applications, including water treatment and pharmaceuticals.

What are the main uses of Calcium dihydroxide (CAS: 1305-62-0)?

Calcium dihydroxide (CAS: 1305-62-0) is widely used in pharmaceuticals as an antacid, in water treatment for pH adjustment, in construction materials like drywall, and as a food additive for leavening agents. It also serves industrial purposes, such as in the production of other chemicals and as a desiccant, and is essential in research for alkaline solutions.

Is Calcium dihydroxide (CAS: 1305-62-0) safe?

Calcium dihydroxide (CAS: 1305-62-0) is generally considered safe when handled properly, but direct contact with skin or eyes, inhalation of dust, or ingestion can cause irritation. Safety precautions include wearing protective gloves, goggles, and a mask. It adheres to OSHA and EPA safety standards for industrial use.

How should Calcium dihydroxide (CAS: 1305-62-0) be stored?

Calcium dihydroxide (CAS: 1305-62-0) should be stored in a cool, dry place, away from moisture and light. Use airtight containers to maintain stability and prevent degradation. Ensure proper ventilation in storage areas to avoid inhalation risks. It remains chemically stable under normal conditions but requires protection from humidity and contaminants.