Calcium oxide, GR 98%+

Name: Calcium oxide, GR 98%+
Brand: Vaqora Chemicals
SKU: VQ-000042

About Calcium oxide, GR 98%+

Calcium oxide is an analytical reagent in AR grade carrying the CAS registry number 1305-78-8, specified at ≥98% purity. With the molecular formula CaO, it has a molar mass of 56.08 g/mol. Systematically, it is named oxocalcium. Alternative names: Calxyl and Gebrannter kalk.

The material typically appears as a white to off-white powder. Literature values give a boiling point of 2850 °C and a density of 3.3 g/mL at 25 °C. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Typical applications include laboratory analysis and research and development. Our customers for this product work in academic and industrial research.

We offer Calcium oxide in 500 g, 5 kg and 4 x 25 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Laboratory analysis
Research & development

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Calcium oxide, GR 98%+
Catalogue No.	VQ-000042
CAS Number	1305-78-8
IUPAC name	oxocalcium
Molecular formula	CaO
Molecular weight	56.08 g/mol
Exact mass	55.9575
Grade	AR
Purity / assay	≥98%
HSN code	28259090
InChIKey	ODINCKMPIJJUCX-UHFFFAOYSA-N
SMILES	O=[Ca]
PubChem CID	14778

Physical properties
Physical form	Powder
Appearance	White to off-white powder
Boiling point	2850 °C
Density	3.3 g/mL at 25 °C
H-bond donors / acceptors	0 / 1
TPSA	17.1 Å²
Synonyms	Calxyl, Gebrannter kalk, Unslaked lime, Calcium monoxide, Calx usta, Chaux vive, Quick lime, Rhenosorb C, Rhenosorb F, Calcium oxide (CaO), Desical P, Lime, burned

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H318Causes serious eye damage
H335May cause respiratory irritation

Precautionary statements: P260, P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P319, P321, P330, P332 + P317, P362 + P364, P363, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 1305-78-8

Extra Pure

Calcium oxide powder, 90%

CAS: 1305-78-8
Formula: CaO
MW: 56.08 g/mol

VQ-000038

Food Grade

Calcium oxide powder, food grade (FCC) 95.0%

CAS: 1305-78-8
Formula: CaO
MW: 56.08 g/mol

VQ-046971

Calcium oxide, 99.95%

CAS: 1305-78-8
Formula: CaO
MW: 56.08 g/mol

VQ-000039

Calcium oxide, 99.995%

CAS: 1305-78-8
Formula: CaO
MW: 56.08 g/mol

VQ-000040

Calcium oxide, 99.998%

CAS: 1305-78-8
Formula: CaO
MW: 56.08 g/mol

VQ-000041

Calcium oxide, nanopowder, APS 100-300 nm, 99.5%

CAS: 1305-78-8
Formula: CaO
MW: 56.08 g/mol

VQ-017447

Reagent

Calcium oxide, reagent grade

CAS: 1305-78-8
Formula: CaO
MW: 56.08 g/mol

VQ-000043

Frequently asked questions

What is the CAS number of Calcium oxide, GR 98%+?

The CAS Registry Number of Calcium oxide, GR 98%+ is 1305-78-8. It is also known as Calxyl, Gebrannter kalk, Unslaked lime.

What is the molecular formula and molecular weight of Calcium oxide, GR 98%+?

Calcium oxide, GR 98%+ has the molecular formula CaO and a molecular weight of 56.08 g/mol. Its IUPAC name is oxocalcium.

Which grade and pack sizes of Calcium oxide, GR 98%+ can I order?

We supply Calcium oxide, GR 98%+ in AR (≥98%) grade, in 500 g, 5 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Calcium oxide, GR 98%+?

Yes. Every lot of Calcium oxide, GR 98%+ is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Calcium oxide, GR 98%+ be shipped internationally?

Yes. Calcium oxide, GR 98%+ is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.