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248568

Sigma-Aldrich

Calcium oxide

reagent grade

Synonym(s):

Lime, Quicklime

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1 EA
CN¥15,802.30

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About This Item

Linear Formula:
CaO
CAS Number:
1305-78-8
Molecular Weight:
56.08
EC Number:
215-138-9
MDL number:
MFCD00010911
UNSPSC Code:
12352303
PubChem Substance ID:
329752750
NACRES:
NA.21
grade:
reagent grade
form:
powder

CN¥15,802.30

Please contact Customer Service for Availability
Request a Bulk Order

grade

reagent grade

form

powder

concentration

≥68.0% Ca (EDTA titration)

loss

10% loss on ignition, 1000°C (absorbed H2O and CO2)

pH

12.6 (20 °C)

bp

2850 °C (lit.)

density

3.3 g/mL at 25 °C (lit.)

SMILES string

O=[Ca]

InChI

1S/Ca.O

InChI key

ODINCKMPIJJUCX-UHFFFAOYSA-N

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1 of 4

This Item
GF38122893GF80164964GF15199331
铂 foil, not light tested, 100x100mm, thickness 0.01mm, as rolled, 99.95%

GF95421450

铂

铂 foil, not light tested, 100x100mm, thickness 0.004mm, as rolled, 99.95%

GF38122893

铂

铂 foil, not light tested, 100x100mm, thickness 0.005mm, as rolled, 99.95%

GF80164964

铂

铂 foil, not light tested, 100x100mm, thickness 0.002mm, as rolled, 99.95%

GF15199331

铂

manufacturer/tradename

Goodfellow 954-214-50

manufacturer/tradename

Goodfellow 381-228-93

manufacturer/tradename

Goodfellow 801-649-64

manufacturer/tradename

Goodfellow 151-993-31

form

foil

form

foil

form

foil

form

foil

bp

3827 °C (lit.)

bp

3827 °C (lit.)

bp

3827 °C (lit.)

bp

3827 °C (lit.)

resistivity

10.6 μΩ-cm, 20°C

resistivity

10.6 μΩ-cm, 20°C

resistivity

10.6 μΩ-cm, 20°C

resistivity

10.6 μΩ-cm, 20°C

mp

1772 °C (lit.)

mp

1772 °C (lit.)

mp

1772 °C (lit.)

mp

1772 °C (lit.)

General description

Calcium oxide (CaO) is an alkaline earth metal oxide that has many industrial applications. Calcium oxide receives great attention in catalysis because it is affordable, environmentally friendly, and characterized by a strong basic nature, abundantly available, low methanol solubility and non-toxic compound.

Application

Calcium oxide is used:
  • As a catalyst during the transesterification of palm oil to produce biodiesel.
  • In the inactivation of Cryptosporidium spp. oocysts and Giardia spp. Cysts from WTS (water treatment sludge).
  • In combination with PAA (peracetic acid) to increases the biogas production potential of cow manure and maize straw.

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H315,H318,H335

Hazard Classifications

Eye Dam. 1 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

  • Specification Sheet

    • Choose from one of the most recent versions:

    Certificates of Analysis (COA)

    Lot/Batch Number
    MKCX4917
    MKCW2479
    MKCV3749
    MKCR6409
    MKCS6828

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    Ryo Kubota et al.
    Biological engineering transactions, 4(2), 69-80 (2011-01-01)
    We report on the use of a non-instrumented device for the implementation of a loop-mediated amplification (LAMP) based assay for the select-agent bacterial-wilt pathogen
    Calcium oxide as a solid base catalyst for transesterification of soybean oil and its application to biodiesel production.
    Kouzu M, et al.
    Fuel: The Science and Technology of Fuel and Energy, 87(12), 2798-2806 (2008)
    Preparation of biodiesel catalyzed by solid super base of calcium oxide and its refining process.
    Huaping ZHU, et al.
    Chinese Journal of Catalysis, 27(5), 391-396 (2006)
    Eagleson M.
    Concise Encyclopedia Chemistry, 65-65 (1994)
    Sebastião Roberto Soares et al.
    Waste management (New York, N.Y.), 33(1), 175-183 (2012-11-06)
    The establishment of rules to manage Health Care Waste (HCW) is a challenge for the public sector. Regulatory agencies must ensure the safety of waste management alternatives for two very different profiles of generators: (1) hospitals, which concentrate the production
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