乙烯酮（CAS 463-51-4）：分子式 C2H2O、分子量 42.04。
| CAS号 | 463-51-4 |
|---|---|
| 分子式 | C2H2O |
| 分子量 | 42.04 |
| 熔点 | -238 °F (NIOSH, 2024) |
| 沸点 | -69 °F at 760 mmHg (NIOSH, 2024) |
| LogP | 0.8 |
| 应用领域 | 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 |
登记用途：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。
乙烯酮 是一种化工化合物，登记 CAS 号为 463-51-4，分子式 C2H2O（分子量 42.04）。
登记 CAS 号：463-51-4
其分子式 C2H2O 由 2 个碳、2 个氢、1 个氧 组成。
别名/同义词：乙烯酮 · ketene
乙烯酮 的 CAS 登记号为 463-51-4。
分子式 C2H2O，分子量 42.04。
别名/同义词：乙烯酮、ketene。
登记用途：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。
乙烯酮（CAS 463-51-4）的独立参考数据，整理自公开化学数据库。
| 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].
数据来源：PubChem / Wikidata；与随货 COA 不一致时以 COA 为准。
English page: ketene