甲基乙炔

Name: 甲基乙炔
Brand: 济南圣和化工有限公司

CAS 74-99-7C3H4MW 40.06

甲基乙炔，CAS 登记号 74-99-7，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74-99-7

分子式C3H4

分子量40.06

熔点-153 °F (NIOSH, 2024)

沸点-10 °F at 760 mmHg (NIOSH, 2024)

LogP0.9

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

每批随货提供 COA；可按需提供 MSDS 及技术文件。邮件注明产品名称与 CAS 号，一个工作日内回复报价。

常见问题

在哪里能查到甲基乙炔的 CAS 号？

本页已列出甲基乙炔的 CAS 号：74-99-7，可与随货 COA 核对。

可以提供哪些规格和包装？

常见纯度为按批次COA提供(不公开发布)，包装形式为按订单/批次确认(不公开发布)，特殊规格可在询价时说明。

甲基乙炔一般用在什么产品里？

主要涉及有机化学品。

下单流程是怎样的？

来信 info@591daili.com 或 WhatsApp 联系，提供产品名称、CAS 号与数量，确认价格与交期后即可安排发货，验收以批次 COA 为准。

PubChem 公开数据

Description

Methylacetylene · CAS 74-99-7 · C3H4. UNII 086L40ET1B. Boiling Point: -10 °F at 760 mmHg (NIOSH, 2024); Boiling Point: -23.2 °C; Boiling Point: -10 °F.

Identification

CAS Registry Number	74-99-7
PubChem CID	6335
Molecular formula	C3H4
IUPAC name	prop-1-yne
UNII (FDA)	086L40ET1B

Computed Descriptors

Molecular Weight	40.06
XLogP3	0.9
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	0
Rotatable Bond Count	0
Exact Mass	40.0313001276
Monoisotopic Mass	40.0313001276
Topological Polar Surface Area	0
Heavy Atom Count	3
Formal Charge	0

Physical & Chemical Properties

Boiling Point	-10 °F at 760 mmHg (NIOSH, 2024)
Boiling Point	-23.2 °C
Boiling Point	-10 °F
Boiling Point	-23.3 °C @760 [mm Hg]
Melting Point	-153 °F (NIOSH, 2024)
Melting Point	-102.7 °C
Melting Point	-153 °F
Solubility	In water, 3,640 mg/L at 25 °C
Density	0.607 at 25 °C/4 °C
Density	.607 (p> 1 atm)

Physical description & handling notes

1-propyne appears as a colorless liquefied gas with a sweet odor. mp: -104 °C, bp: -23.1 °C. Insoluble in water, soluble in ethanol, chloroform and benzene. Moderately toxic by inhalation. Used as a specialty fuel. Denser than air. Vapors may ignite at distant sources of ignition and flash back.
Liquid; Gas Vapor
Colorless gas with a sweet odor. [Note: A fuel that is shipped as a liquefied compressed gas]; [NIOSH]
COLOURLESS COMPRESSED GAS WITH CHARACTERISTIC ODOUR.
Colorless gas with a sweet odor.
Colorless gas [Note: Shipped as a liquefied compressed gas].

GHS Hazard Classification

Reported hazard statements	H220 (98.8%), H280 (100%), H335 (52.9%), H336 (34.7%)

H220 (98.8%): Extremely flammable gas [Danger Flammable gases]

H280 (100%): Contains gas under pressure; may explode if heated [Warning Gases under pressure]

Documented Uses

Used as a welding fuel and chemical intermediate; [ACGIH]
Gas Welding and Cutting [Category: Weld]
... Propyne is used as a welding torch fuel, as a specialty fuel, and chemical intermediate.
Thermal or catalytic pyrolysis of propene
Propyne and propadiene can be recovered from cracked gas by solvent extraction.
In ethylene plants ... removed by selective hydrogenation of the C3 stream after it has been separated from heavier hydrocarbons.

Synonyms

Propyne; Methylacetylene; prop-1-yne; 1-PROPYNE; Allylene; 74-99-7; Methyl acetylene; Acetylene, methyl-; 086L40ET1B; DTXSID0026387; CHEBI:48086; RefChem:6178; DTXCID406387; 200-828-4; METHYLACETYLENE-D1; MFCD00036235

Frequently Asked Questions

What are the CAS number and molecular formula of Methylacetylene?

CAS 74-99-7; molecular formula C3H4; molecular weight — g/mol.

What other names is Methylacetylene known by?

Propyne, Methylacetylene, prop-1-yne, 1-PROPYNE, Allylene, 74-99-7.

Is Methylacetylene classified as hazardous?

Hazard statements reported: H220, H280, H335, H336.

What are the key physical properties of Methylacetylene?

Boiling Point: -10 °F at 760 mmHg (NIOSH, 2024); Boiling Point: -23.2 °C; Boiling Point: -10 °F; Boiling Point: -23.3 °C @760 [mm Hg].

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.

获取甲基乙炔报价

供应商：济南圣和化工有限公司 · 一个工作日内回复。

邮件询价 WhatsApp