乙烯酮

Name: 乙烯酮
Brand: 济南圣和化工有限公司

CAS 463-51-4C2H2OMW 42.04

乙烯酮，CAS 登记号 463-51-4，由济南圣和化工有限公司现货供应，可提供纯度按批次COA提供(不公开发布) 的规格，下游主要用于有机化学品。支持样品与小批量试用，批量价格请联系我们获取，验收以批次 COA 为准。

规格参数

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)

LogP0.8

纯度按批次COA提供(不公开发布)

包装按订单/批次确认(不公开发布)

应用领域有机化学品

类别有机化学品

用途与场景

有机化学品

包装与供货

包装规格按订单/批次确认(不公开发布)

纯度规格按批次COA提供(不公开发布)

储存条件密封、阴凉干燥处保存

供货周期现货/按订单安排

文件与支持

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常见问题

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本页已列出乙烯酮的 CAS 号：463-51-4，可与随货 COA 核对。

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主要涉及有机化学品。

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PubChem 公开数据

Description

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].

Identification

CAS Registry Number	463-51-4
PubChem CID	10038
Molecular formula	C2H2O
IUPAC name	ethenone
UNII (FDA)	LEP3SM032A

Computed Descriptors

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
Formal Charge	0

Physical & Chemical Properties

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

Physical description & handling notes

Colorless gas with a penetrating odor; [NIOSH]
COLOURLESS GAS WITH CHARACTERISTIC ODOUR.
Colorless gas with a penetrating odor.
COLORLESS GAS
Colorless gas.
PENETRATING ODOR

GHS Hazard Classification

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]

Documented 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.
BY THERMAL DECOMPOSITION OF ACETONE, DIKETENE OR ACETIC ANHYDRIDE.

Synonyms

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

Frequently Asked Questions

What are the CAS number and molecular formula of ketene?

CAS 463-51-4; molecular formula C2H2O; molecular weight — g/mol.

What other names is ketene known by?

Ethenone, KETENE, Carbomethene, Keto-ethylene, 463-51-4, LEP3SM032A.

Is ketene classified as hazardous?

Hazard statements reported: H220, H315, H318, H330, H335.

What are the key physical properties of ketene?

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.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.

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