ketene (CAS 463-51-4) — formula C2H2O, molecular weight 42.04; category organic chemicals.
ketene (CAS 463-51-4) is a chemical raw material in the organic chemicals category. Its molecular formula C2H2O comprises 2 C, 2 H, 1 O atoms. Its molecular weight is about 42.04. Reported physicochemical data: melting point around -238 °F (NIOSH, 2024), boiling point around -69 °F at 760 mmHg (NIOSH, 2024), LogP about 0.8. As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 463-51-4 |
|---|---|
| Molecular Formula | C2H2O |
| Molecular Weight | 42.04 |
| Melting Point | -238 °F (NIOSH, 2024) |
| Boiling Point | -69 °F at 760 mmHg (NIOSH, 2024) |
| LogP | 0.8 |
| Applications | synthesis of acetic anhydride and other organic chemicals, Polymerizes readily and cannot be stored. Obtained from diketene, CONVERSION OF HIGHER ACIDS INTO THEIR ANHYDRIDES, ACETYLATION IN MFR OF CELLULOSE ACETATE & ASPIRIN, PRINCIPALLY CHEM INT FOR ACETIC ANHYDRIDE FROM ACETIC ACID, FOR DEHYDROACETIC ACID AND ACETOACETIC ESTERS |
| Category | Organic Chemicals |
Documented applications: synthesis of acetic anhydride and other organic chemicals, Polymerizes readily and cannot be stored. Obtained from diketene, CONVERSION OF HIGHER ACIDS INTO THEIR ANHYDRIDES, ACETYLATION IN MFR OF CELLULOSE ACETATE & ASPIRIN, PRINCIPALLY CHEM INT FOR ACETIC ANHYDRIDE FROM ACETIC ACID, FOR DEHYDROACETIC ACID AND ACETOACETIC ESTERS.
ketene is a carbon-based organic compound with CAS registry number 463-51-4 and molecular formula C2H2O (molecular weight 42.04), belonging to the organic chemicals segment of chemical raw materials.
CAS number: 463-51-4
Its molecular formula C2H2O comprises 2 C, 2 H, 1 O atoms.
Also known as: ketene · 乙烯酮
Category: organic chemicals
The CAS registry number of ketene is 463-51-4.
Molecular formula C2H2O, molecular weight 42.04.
It is also registered under: ketene, 乙烯酮.
Recorded applications: synthesis of acetic anhydride and other organic chemicals, Polymerizes readily and cannot be stored. Obtained from diketene, CONVERSION OF HIGHER ACIDS INTO THEIR ANHYDRIDES, ACETYLATION IN MFR OF CELLULOSE ACETATE & ASPIRIN, PRINCIPALLY CHEM INT FOR ACETIC ANHYDRIDE FROM ACETIC ACID, FOR DEHYDROACETIC ACID AND ACETOACETIC ESTERS.
Category: Organic Chemicals.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for ketene (CAS 463-51-4), compiled from public chemistry databases.
| CAS Registry Number | 463-51-4 |
|---|---|
| PubChem CID | 10038 |
| Molecular formula | C2H2O |
| IUPAC name | ethenone |
| UNII (FDA) | LEP3SM032A |
| Molecular Weight | 42.04 |
|---|---|
| XLogP3 | 0.8 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 0 |
| Exact Mass | 42.010564683 |
| Monoisotopic Mass | 42.010564683 |
| Topological Polar Surface Area | 17.1 |
| Heavy Atom Count | 3 |
| Boiling Point | -69 °F at 760 mmHg (NIOSH, 2024) |
|---|---|
| Boiling Point | -56 °C |
| Boiling Point | -49.8 °C @760 [mm Hg] |
| Boiling Point | -69 °F |
| Melting Point | -238 °F (NIOSH, 2024) |
| Melting Point | -150 °C |
| Melting Point | -151 °C |
| Melting Point | -238 °F |
| Vapor Density | 1.45 (AIR= 1) |
| Vapor Pressure | 750 [mm Hg] @-50 °C |
Ethenone; KETENE; Carbomethene; Keto-ethylene; 463-51-4; LEP3SM032A; DTXSID1052113; CHEBI:48003; KETOETHYLENE; RefChem:794269; DTXCID3030682; CHEBI:48002; 207-336-9; Ethylenone; KETEN; 12071-23-7
| Reported hazard statements | H220 (100%), H315 (100%), H318 (100%), H330 (93.7%), H335 (93.7%), H370, H280, H319 |
|---|
H220 (100%): Extremely flammable gas [Danger Flammable gases]
H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
ketene · CAS 463-51-4 · C2H2O. UNII LEP3SM032A. Boiling Point: -69 °F at 760 mmHg (NIOSH, 2024); Boiling Point: -56 °C; Boiling Point: -49.8 °C @760 [mm Hg].
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 乙烯酮