4,5-二甲基噻唑

Name: 4,5-二甲基噻唑
Brand: 济南圣和化工有限公司

CAS 3581-91-7C5H7NSMW 113.18

济南圣和化工主营供应 4,5-二甲基噻唑（CAS 3581-91-7），归类于有机化学品，分子式 C5H7NS，分子量 113.18。我们面向国内化工贸易与生产企业提供稳定的现货供应，报价响应快，支持对公转账并可开具增值税发票。

产品概览

CAS号	3581-91-7
分子式	C5H7NS
分子量	113.18
熔点	83 - 84 °C
沸点	157.00 to 159.00 °C. @ 760.00 mm Hg
LogP	1.8
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

应用领域

有机化学品

4,5-二甲基噻唑在有机化学品领域使用广泛。采购前请确认纯度等级与包装形式，以批次 COA 为验收依据。

包装与储存

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

运输常规化工运输

样品可协商提供

交期现货/按订单安排

供应说明：4,5-二甲基噻唑常规包装为按订单/批次确认(不公开发布)，储存时应密封置于阴凉干燥处，避免与氧化剂混放。济南圣和化工有限公司支持国内物流发货，大货交期与运费以订单确认为准。

质量与文件

每批产品随货提供 COA（分析证书）；可按需提供 MSDS/技术数据表及第三方检测报告。纯度与包装以批次 COA 及订单确认为准。

关于供应商

济南圣和化工有限公司位于山东济南，主营化工原料供应，精选产品 3,000+ 种，覆盖有机化学品、无机化学品、食品添加剂、医药中间体等 12 大分类。我们随货提供 COA 分析证书，一个工作日内回复报价，欢迎国内外采购方长期合作。

常见问题

4,5-二甲基噻唑的 CAS 号是多少？

4,5-二甲基噻唑的 CAS 号为 3581-91-7。

该产品的纯度和包装规格是什么？

常规纯度规格为按批次COA提供(不公开发布)，包装为按订单/批次确认(不公开发布)，随货提供 COA。

4,5-二甲基噻唑有什么用途？

主要应用于有机化学品。

如何购买或获取报价？

请发送邮件至 info@591daili.com 或通过 WhatsApp 联系，注明产品名称、CAS 号与需求数量，一个工作日内回复报价。供应商：济南圣和化工有限公司。

PubChem 公开数据

Description

4,5-Dimethylthiazole · CAS 3581-91-7 · C5H7NS. UNII U3RP5I088G. Boiling Point: 157.00 to 159.00 °C. @ 760.00 mm Hg; Boiling Point: 158 °C (742 mm Hg); Melting Point: 83 - 84 °C.

Identification

CAS Registry Number	3581-91-7
PubChem CID	62510
Molecular formula	C5H7NS
IUPAC name	4,5-dimethyl-1,3-thiazole
UNII (FDA)	U3RP5I088G
FEMA number	3274
JECFA number	1035

Computed Descriptors

Molecular Weight	113.18
XLogP3	1.8
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	113.02992040
Monoisotopic Mass	113.02992040
Topological Polar Surface Area	41.1
Heavy Atom Count	7
Formal Charge	0

Physical & Chemical Properties

Boiling Point	157.00 to 159.00 °C. @ 760.00 mm Hg
Boiling Point	158 °C (742 mm Hg)
Melting Point	83 - 84 °C
Density	1.067-1.072
Refractive Index	1.516-1.524

Physical description & handling notes

Solid
Clear colourless liquid; roasted, nutty, meaty, boiled poultry-like odour
Soluble in ether
Miscible at room temperature (in ethanol)

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Substance added to food: FLAVORING AGENT OR ADJUVANT Flavoring Agents FLAVOURING_AGENT: Flavouring Agent Green, Nut, Roast, Roasted No safety concern at current levels of intake when used as a flavouring agent

GHS Hazard Classification

Reported hazard statements	H302 (98.1%)

H302 (98.1%): Harmful if swallowed [Warning Acute toxicity, oral]

P264, P270, P301+P317, P330, and P501 (click each P-code to see the statement)

Documented Uses

Flavouring Agent -> FLAVOURING_AGENT -> JECFA Functional Classes
Flavoring Agents -> JECFA Flavorings Index

Synonyms

4,5-DIMETHYLTHIAZOLE; 3581-91-7; 4,5-Dimethyl-1,3-thiazole; Thiazole, 4,5-dimethyl-; 4,5-dimethyl thiazole; FEMA No. 3274; EINECS 222-703-3; BRN 0105694; U3RP5I088G; DTXSID40189348; 4-27-00-00986 (Beilstein Handbook Reference); 4,5-DIMETHYL THIAZOLE [FHFI]; RefChem:507854; DTXCID70111839; 222-703-3; 4,5-dimethyl-thiazole

Frequently Asked Questions

What are the CAS number and molecular formula of 4,5-Dimethylthiazole?

CAS 3581-91-7; molecular formula C5H7NS; molecular weight — g/mol.

What other names is 4,5-Dimethylthiazole known by?

4,5-DIMETHYLTHIAZOLE, 3581-91-7, 4,5-Dimethyl-1,3-thiazole, Thiazole, 4,5-dimethyl-, 4,5-dimethyl thiazole, FEMA No. 3274.

What is the regulatory status of 4,5-Dimethylthiazole?

Documented regulatory listings: EU Flavoring substances; FDA Substance added to food: FLAVORING AGENT OR ADJUVANT; Flavoring Agents.

Is 4,5-Dimethylthiazole classified as hazardous?

Hazard statements reported: H302.

What are the key physical properties of 4,5-Dimethylthiazole?

Boiling Point: 157.00 to 159.00 °C. @ 760.00 mm Hg; Boiling Point: 158 °C (742 mm Hg); Melting Point: 83 - 84 °C; Density: 1.067-1.072.

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.