Cas no 1305-78-8 (Calcium oxide)

Calcium oxide is a highly reactive, alkaline compound utilized as a desiccant and in various industrial applications due to its ability to quickly absorb moisture from the air and its high reactivity with water to form calcium hydroxide. Its key advantages lie in its rapid drying capabilities and strong pH buffering properties.
Calcium oxide structure
Calcium oxide structure
Product Name:Calcium oxide
CAS No:1305-78-8
MF:CaO
MW:56.0773992538452
MDL:MFCD00010911
CID:41169
PubChem ID:329752750
Update Time:2025-06-19

Calcium oxide Chemical and Physical Properties

Names and Identifiers

    • Calcium oxide
    • FLUXING LIME
    • LIME, CAUSTIC
    • LIME
    • CAUSTIC
    • BURNT LIME
    • CALX
    • CALCIUM (II) OXIDE
    • Calcium oxide (ACS grade)
    • Calcia
    • Calcium oxide,powder
    • Lime,Quicklime
    • oxocalcium
    • QuickliMe
    • S130
    • Calcium oxide,AR
    • Calcium oxide,CP
    • Calcium oxide,SP
    • CaO
    • cml21
    • cml31
    • calxyl
    • airlock
    • Dynacal
    • Calcium oxide
    • Calcium oxide powder
    • Sintered lime
    • Calcium oxide (granular)
    • Calcium oxide (lump)
    • Caloxol W3
    • Calcium oxide, p.a., 95.0%
    • Caloxal CPA
    • EINECS 215-138-9
    • Calcium oxide, SAJ special grade, >=98.0%
    • CHEMBL2104397
    • EC 215-138-9
    • Calcium oxide [UN1910] [Corrosive]
    • Lime, burned
    • Calcium monoxide
    • Calcium oxide, puriss., meets analytical specification of FCC, 96-100.5% (ex ignited substance), powder (fine)
    • CML 35
    • Chaux vive
    • Calcia (CaO)
    • Kalziumoxid
    • Calcium oxide, 99.995% trace metals basis
    • Rhenosorb C
    • 1305-78-8
    • Calcium oxide (JP17)
    • Wapniowy tlenek
    • Quick lime
    • Calcium oxide, 98%
    • Calcium oxide, Reagent Grade
    • AKOS015903966
    • EPA Pesticide Chemical Code 075604
    • Oxyde de calcium [French]
    • HSDB 1615
    • UNII-C7X2M0VVNH
    • Caloxol CP2
    • Calcium Oxide Dispersion
    • Calcium Oxide Nanopowder
    • Calcium oxide, SAJ first grade, >=98.0%
    • Tin(IV) selenide (SnSe2)
    • CML 21
    • Rhenosorb F
    • Wapniowy tlenek [Polish]
    • Lime, meets USP testing specifications
    • J-005832
    • Desical P
    • Lime [USP]
    • Lime (USP)
    • Calcium oxide (CaO)
    • CHEBI:31344
    • Bell CML(E)
    • D01679
    • QC-X
    • Calx usta
    • Calcium oxide, Vetec(TM) reagent grade
    • Caswell No. 147A
    • Oxyde de calcium
    • Calcium oxide, anhydrous, powder, >=99.99% trace metals basis
    • Gebrannter kalk
    • Calcium oxide, CP
    • Bell CML(P)
    • Vesta PP
    • CCRIS 7496
    • Calcium oxide, nanopowder, <160 nm particle size (BET), 98%
    • Branntkalk
    • Q185006
    • CML 31
    • Calcium oxide, ReagentPlus(R), 99.9% trace metals basis
    • Aetzkalk
    • UN1910
    • 1,6-Octadien-3-ol, 3,7-dimethyl-, acid-isomerized
    • FC07719
    • MDL: MFCD00010911
    • Inchi: 1S/Ca.O
    • InChI Key: ODINCKMPIJJUCX-UHFFFAOYSA-N
    • SMILES: [Ca]=O

Computed Properties

  • Exact Mass: 55.95750
  • Monoisotopic Mass: 55.957506
  • Isotope Atom Count: 0
  • Hydrogen Bond Donor Count: 1
  • Hydrogen Bond Acceptor Count: 1
  • Heavy Atom Count: 2
  • Rotatable Bond Count: 0
  • Complexity: 2
  • Covalently-Bonded Unit Count: 1
  • Defined Atom Stereocenter Count: 0
  • Undefined Atom Stereocenter Count : 0
  • Defined Bond Stereocenter Count: 0
  • Undefined Bond Stereocenter Count: 0
  • Surface Charge: 0
  • Tautomer Count: nothing
  • XLogP3: nothing
  • Topological Polar Surface Area: 17.1

Experimental Properties

  • Color/Form: White amorphous powder, gray or light yellow when containing impurities, with hygroscopicity. [1]
  • Density: 3.3?g/mL?at 25?°C(lit.)
  • Melting Point: 2570 oC
  • Boiling Point: 2850?°C(lit.)
  • Flash Point: 2850°C
  • Refractive Index: 1.83
  • PH: 12.6 (H2O, 20℃)(saturated solution)
  • Solubility: 1.65g/l Risk of violent reaction.
  • Water Partition Coefficient: React
  • Stability/Shelf Life: Stability Stable, but absorbs carbon dioxide from the air. Incompatible with water, moisture, fluorine, strong acids.
  • PSA: 17.07000
  • LogP: -0.11880
  • Merck: 14,1686
  • Sensitiveness: Air & Moisture Sensitive
  • Solubility: Insoluble in ethanol, soluble in acid and glycerol. [6]
  • Vapor Pressure: NA

Calcium oxide Security Information

  • Symbol: GHS05
  • Signal Word:Danger
  • Hazard Statement: H314
  • Warning Statement: P280,P305+P351+P338,P310
  • Hazardous Material transportation number:1910
  • WGK Germany:1
  • Hazard Category Code: 37/38-41
  • Safety Instruction: S26-S36/37/39-S45-S25-S39
  • FLUKA BRAND F CODES:10-21-34
  • RTECS:EW3100000
  • Hazardous Material Identification: C
  • HazardClass:8
  • PackingGroup:III
  • TSCA:Yes
  • Safety Term:8
  • Packing Group:III
  • Risk Phrases:R34
  • Storage Condition:常溫保存

Calcium oxide Customs Data

  • HS CODE:2825909000
  • Customs Data:

    China Customs Code:

    2825909000

Calcium oxide Pricemore >>

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Calcium oxide Suppliers

Suzhou Senfeida Chemical Co., Ltd
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Audited Supplier Audited Supplier
(CAS:1305-78-8)Calcium oxide
Order Number:sfd6332
Stock Status:in Stock
Quantity:200kg
Purity:99.9%
Pricing Information Last Updated:Friday, 19 July 2024 14:34
Price ($):discuss personally
Tiancheng Chemical (Jiangsu) Co., Ltd
Gold Member
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(CAS:1305-78-8)氧化鈣
Order Number:LE1694107;LE26997853;LE3945
Stock Status:in Stock
Quantity:25KG,200KG,1000KG
Purity:99%
Pricing Information Last Updated:Friday, 20 June 2025 12:34
Price ($):discuss personally
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Suzhou Senfeida Chemical Co., Ltd
(CAS:1305-78-8)Calcium oxide
sfd6332
Purity:99.9%
Quantity:200kg
Price ($):Inquiry
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Tiancheng Chemical (Jiangsu) Co., Ltd
(CAS:1305-78-8)氧化鈣
LE1694107;LE26997853;LE3945
Purity:99%/99%/99%
Quantity:25KG,200KG,1000KG/25KG,200KG,1000KG/25KG,200KG,1000KG
Price ($):Inquiry/Inquiry/Inquiry
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