2-Methyl-4-isothiazolin-3-one hydrochloride
Also known as: 2-Methyl-3-isothiazolone hydrochloride, Methylisothiazolinone hydrochloride, 2-Methylisothiazol-3-one hydrochloride, 2-methyl-1,2-thiazol-3-one hydrochloride, 2-methyl-2H-isothiazol-3-one hydrochloride, 3(2H)-Isothiazolone, 2-methyl-, hydrochloride, MIT hydrochloride, N-Methylisothiazolone HCl, MFCD06804636
2-Methyl-4-isothiazolin-3-one hydrochloride (CAS 26172-54-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H6ClNOS and a molecular weight of 151.62 g/mol. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage, H317 — May cause an allergic skin reaction and H334 — May cause allergy or asthma symptoms if inhaled. It is listed by 1 supplier, from 3.44 to 4.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 26172-54-3
- Jingsj CID
- J-1096043-3
- Molecular Formula
- C4H6ClNOS
- Molecular Weight
- 151.62 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | 97% 500g | ¥1,720.00 | $0.51 /gBest ¥3.44/g CNY | CN China MOQ 500g | |
In Stock | 97% 100g | ¥380.00 | $0.57 /g ¥3.80/g CNY | CN China MOQ 5g | |
Made to Order | 97% 25g | ¥100.00 | $0.6 /g ¥4.00/g CNY | CN China MOQ 25g |
Physicochemical Properties
| Exact Mass | 150.98600 |
|---|---|
| PSA | 50.24000 |
| LogP | 1.24880 |
| Storage Conditions | 2-8°C |
| SMILES | CN1C(=O)C=CS1.Cl |
| InChIKey | SJXPQSRCFCPWQQ-UHFFFAOYSA-N |
| InChI | 1S/C4H5NOS.ClH/c1-5-4(6)2-3-7-5;/h2-3H,1H3;1H |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
- H317 — May cause an allergic skin reaction
- H334 — May cause allergy or asthma symptoms if inhaled
Activity & Biological Data
| Additional Information | [1]. Rubén Alvarez-Sánchez, et al. Covalent Binding of the 13C-labeled Skin Sensitizers 5-chloro-2-methylisothiazol-3-one (MCI) and 2-methylisothiazol-3-one (MI) to a Model Peptide and Glutathione. Bioorg Med Chem Lett. 2004 Jan 19;14(2):365-8. [2]. Aynur O Aptula, et al. From Experiment to Theory: Molecular Orbital Parameters to Interpret the Skin Sensitization Potential of 5-chloro-2-methylisothiazol-3-one and 2-methylisothiazol-3-one. Chem Res Toxicol. 2005 Feb;18(2):324-9. |
|---|
Customs & Trade Information
| HS Code | 2934999090 |
|---|---|
| Summary | 2934999090. other heterocyclic compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 2-Methyl-4-isothiazolin-3-one hydrochloride?
The CAS number of 2-Methyl-4-isothiazolin-3-one hydrochloride is 26172-54-3.
What are the molecular formula and molecular weight of 2-Methyl-4-isothiazolin-3-one hydrochloride?
2-Methyl-4-isothiazolin-3-one hydrochloride has molecular formula C4H6ClNOS and molecular weight 151.62 g/mol.
Which suppliers offer 2-Methyl-4-isothiazolin-3-one hydrochloride?
1 supplier(s) listed; reference unit price ¥3.44–4.00 /g.
Is 2-Methyl-4-isothiazolin-3-one hydrochloride hazardous?
2-Methyl-4-isothiazolin-3-one hydrochloride has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage; H317 — May cause an allergic skin reaction; H334 — May cause allergy or asthma symptoms if inhaled.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Methyl-4-isothiazolin-3-one hydrochloride (CAS 26172-54-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1096043-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.