ketene (CAS 463-51-4) — formula C2H2O, molecular weight 42.04; category organic chemicals.
| 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 | Uses: Used in the synthesis of acetic anhydride and other organic chemicals, [ACGIH] Polymerizes readily and cannot be stored. Obtained from diketene, [CAMEO], 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, FOR ACETOACETANILIDE & N, N-DIALKYLACETOACETAMIDES, Acetylating agent, generally reacting with compounds having an active hydrogen atom, reacts with ammonia to give acetamide. Starting point for making various commercially important products, especially acetic anhydride and acetate esters., Methods of Manufacturing: BY THERMAL DECOMPOSITION OF ACETONE, DIKETENE OR ACETIC ANHYDRIDE., PYROLYSIS OF ACETONE OR ACETIC ACID BY PASSING ITS VAPOR THROUGH A TUBE AT 500-600 °C., General Manufacturing Information: Ethenone: ACTIVE |
| Category | Organic Chemicals |
Documented applications: Uses: Used in the synthesis of acetic anhydride and other organic chemicals, [ACGIH] Polymerizes readily and cannot be stored. Obtained from diketene, [CAMEO], 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, FOR ACETOACETANILIDE & N, N-DIALKYLACETOACETAMIDES, Acetylating agent, generally reacting with compounds having an active hydrogen atom, reacts with ammonia to give acetamide. Starting point for making various commercially important products, especially acetic anhydride and acetate esters., Methods of Manufacturing: BY THERMAL DECOMPOSITION OF ACETONE, DIKETENE OR ACETIC ANHYDRIDE., PYROLYSIS OF ACETONE OR ACETIC ACID BY PASSING ITS VAPOR THROUGH A TUBE AT 500-600 °C., General Manufacturing Information: Ethenone: ACTIVE.
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: Uses: Used in the synthesis of acetic anhydride and other organic chemicals, [ACGIH] Polymerizes readily and cannot be stored. Obtained from diketene, [CAMEO], 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, FOR ACETOACETANILIDE & N, N-DIALKYLACETOACETAMIDES, Acetylating agent, generally reacting with compounds having an active hydrogen atom, reacts with ammonia to give acetamide. Starting point for making various commercially important products, especially acetic anhydride and acetate esters., Methods of Manufacturing: BY THERMAL DECOMPOSITION OF ACETONE, DIKETENE OR ACETIC ANHYDRIDE., PYROLYSIS OF ACETONE OR ACETIC ACID BY PASSING ITS VAPOR THROUGH A TUBE AT 500-600 °C., General Manufacturing Information: Ethenone: ACTIVE.
Category: Organic Chemicals.
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