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S-Methylisothiourea hydroiodide

Also known as: Carbamimidothioic acid, methyl ester, monohydriodide (9CI), 2-Methyl-2-thiopseudourea hydroiodide, 2-Methyl-2-thio-pseudourehydriodide, 2-Methylisothiouronium iodide, Methyl carbamimidothioate hydroiodide, Methyl aminomethanimidothioate hydroiodide, S-Methylthiouronium iodide, S-Methylthiuronium iodide, S-Methylisothiouronium iodide, S-Methylisothiuronium iodide, [Amino(methylthio)methylidene]ammonium iodide, Pseudourea, 2-methyl-2-thio-, hydriodide (6CI), Pseudourea, 2-methyl-2-thio-, monohydriodide (8CI)

S-Methylisothiourea hydroiodide (CAS 4338-95-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C2H7IN2S and a molecular weight of 218.06000 g/mol. Key properties include a melting point of 82ºC, a boiling point of 138.8ºC at 760mmHg, a density of 1.26g/cm3 and a flash point of 37.7ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4338-95-8
Jingsj CID
J-8409-3
Molecular Formula
C2H7IN2S
Molecular Weight
218.06000 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point82ºC
Boiling Point138.8ºC at 760mmHg
Density1.26g/cm3
Flash Point37.7ºC
Exact Mass217.93700
PSA75.17000
LogP2.04110

Customs & Trade Information

HS Code2930909090
Summary2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of S-Methylisothiourea hydroiodide?

The CAS number of S-Methylisothiourea hydroiodide is 4338-95-8.

What are the molecular formula and molecular weight of S-Methylisothiourea hydroiodide?

S-Methylisothiourea hydroiodide has molecular formula C2H7IN2S and molecular weight 218.06000 g/mol.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "S-Methylisothiourea hydroiodide (CAS 4338-95-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8409-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.