2-Methyl-4-isothiazolin-3-one

Name: 2-Methyl-4-isothiazolin-3-one
Brand: Vaqora Chemicals
SKU: VQ-019616

About 2-Methyl-4-isothiazolin-3-one

Vaqora Chemicals supplies 2-Methyl-4-isothiazolin-3-one, an analytical reagent registered under CAS number 2682-20-4. The compound has the formula C4H5NOS, corresponding to a molecular weight of 115.16 g/mol. Systematically, it is named 2-methyl-1,2-thiazol-3-one. It is also known as Methylisothiazolinone or 2-Methyl-3(2H)-isothiazolone.

Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Danger” with 8 hazard statements. Review the Safety Data Sheet before use.

Key uses span agrochemical formulations and laboratory analysis. It is used across academic and industrial research and agrochemical production.

Available in 1 kg packs, 2-Methyl-4-isothiazolin-3-one is dispatched with a Certificate of Analysis (COA) to destinations worldwide. A Safety Data Sheet (SDS) and technical specifications are available on request. Larger quantities and custom packaging are available. Request a quote for pricing and lead time.

Typical applications

Agrochemical formulations
Laboratory analysis

Industries

Specifications & identifiers

Chemical identifiers
Product name	2-Methyl-4-isothiazolin-3-one
Catalogue No.	VQ-019616
CAS Number	2682-20-4
IUPAC name	2-methyl-1,2-thiazol-3-one
Molecular formula	C₄H₅NOS
Molecular weight	115.16 g/mol
Exact mass	115.0092
InChIKey	BEGLCMHJXHIJLR-UHFFFAOYSA-N
SMILES	CN1C(=O)C=CS1
PubChem CID	39800

Physical properties
Physical form	Other
H-bond donors / acceptors	0 / 2
TPSA	45.6 Å²
Synonyms	Methylisothiazolinone, 2-Methyl-3(2H)-isothiazolone, 2-Methyl-4-isothiazoline-3-one, N-methylisothiazolone, 3(2H)-Isothiazolone, 2-methyl-, 2-methyl-3-isothiazolone, n-methylisothiazolin-3-one, Neolone 950, 2-methyl-1,2-thiazol-3(2H)-one, 2-Methyl-4-isothiazoline-3-ketone, methyl-isothiazolinone, methylisothiazolidinone

Safety & hazard information (GHS)

Corrosive

Toxic

Environmental hazard

Signal word: Danger

Hazard statements

H301Toxic if swallowed
H311Toxic in contact with skin
H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H318Causes serious eye damage
H330Fatal if inhaled
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P260, P261, P262, P264, P264 + P265, P270, P271, P272, P273, P280, P284, P301 + P316, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P320, P321, P330, P333 + P317, P361 + P364

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 2-Methyl-4-isothiazolin-3-one?

The CAS Registry Number of 2-Methyl-4-isothiazolin-3-one is 2682-20-4. It is also known as Methylisothiazolinone, 2-Methyl-3(2H)-isothiazolone, 2-Methyl-4-isothiazoline-3-one.

What is the molecular formula and molecular weight of 2-Methyl-4-isothiazolin-3-one?

2-Methyl-4-isothiazolin-3-one has the molecular formula C4H5NOS and a molecular weight of 115.16 g/mol. Its IUPAC name is 2-methyl-1,2-thiazol-3-one.

Which grade and pack sizes of 2-Methyl-4-isothiazolin-3-one can I order?

We supply 2-Methyl-4-isothiazolin-3-one, in 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 2-Methyl-4-isothiazolin-3-one?

Yes. Every lot of 2-Methyl-4-isothiazolin-3-one is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 2-Methyl-4-isothiazolin-3-one be shipped internationally?

Yes. 2-Methyl-4-isothiazolin-3-one is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.