Worldwide shipping · 120+ destinationsCOA & GHS SDS with every lotMon–Sat, 09:30–18:30 IST
VAQORACHEMICALS
Analytical ReagentsAvailable on request

Methylchloroisothiazolinone

Synonyms: 5-Chloro-2-methyl-3-isothiazolone · 5-Chloro-2-methyl-4-isothiazolin-3-one · 5-Chloro-2-methyl-3(2H)-isothiazolone · Kathon CG 5243

CAS No.26172-55-4
FormulaC4H4ClNOS
Mol. weight149.60
Catalogue No.VQ-039108
PurityOn COA
HSN—

Methylchloroisothiazolinone (CAS 26172-55-4) – analytical reagent. C4H4ClNOS, MW 149.6. From Vaqora Chemicals, with COA and worldwide delivery.

Pack sizesPrice on quotation · bulk available
100 mg
250 mg
1 g
5 g
Bulk / custom pack · kg to MT
Enquire
Enquire
Batch COA with every lot
16-section GHS SDS
Export to 120+ countries
DG-compliant packing

About Methylchloroisothiazolinone

Listed under CAS 26172-55-4, Methylchloroisothiazolinone is an analytical reagent available from Vaqora Chemicals. Formula C4H4ClNOS, molecular weight 149.6 g/mol. The IUPAC name is 5-chloro-2-methyl-1,2-thiazol-3-one. Common synonyms include 5-Chloro-2-methyl-3-isothiazolone and 5-Chloro-2-methyl-4-isothiazolin-3-one.

Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Danger” with 13 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for agrochemical formulations and laboratory analysis. Our customers for this product work in academic and industrial research and agrochemical production.

Available in 100 mg, 250 mg, 1 g and 5 g packs, Methylchloroisothiazolinone 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 nameMethylchloroisothiazolinone
Catalogue No.VQ-039108
CAS Number26172-55-4
IUPAC name5-chloro-2-methyl-1,2-thiazol-3-one
Molecular formulaC4H4ClNOS
Molecular weight149.6 g/mol
Exact mass148.9702
InChIKeyDHNRXBZYEKSXIM-UHFFFAOYSA-N
SMILESCN1C(=O)C=C(S1)Cl
PubChem CID33344
Physical properties
Physical formOther
LogP (XLogP3)0.9
H-bond donors / acceptors0 / 2
TPSA45.6 Ų
Synonyms5-Chloro-2-methyl-3-isothiazolone, 5-Chloro-2-methyl-4-isothiazolin-3-one, 5-Chloro-2-methyl-3(2H)-isothiazolone, Kathon CG 5243, 3(2H)-Isothiazolone, 5-chloro-2-methyl-, 5-chloro-N-methylisothiazolone, 5-chloro-2-methylisothiazolin-3-one, 5-chloro-n-methylisothiazolin-3-one, HS 818, n-methyl-5-chloroisothiazolone, N-Methyl-5-chloroisothiazolin-3-one, 5-chloro-2-methyl-3(2H)-isothiazolinone

Safety & hazard information (GHS)

GHS05 Corrosive
Corrosive
GHS06 Toxic
Toxic
GHS07 Harmful / irritant
Harmful / irritant
GHS09 Environmental hazard
Environmental hazard

Signal word: Danger

Hazard statements

  • H300Fatal if swallowed
  • H301+H311Toxic if swallowed or in contact with skin
  • H301Toxic if swallowed
  • H310Fatal in contact with skin
  • 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
  • H331Toxic if inhaled
  • H335May cause respiratory irritation
  • 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, P319, P320, P321, P330, P333 + P317

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

Documents

Frequently asked questions

What is the CAS number of Methylchloroisothiazolinone?

The CAS Registry Number of Methylchloroisothiazolinone is 26172-55-4. It is also known as 5-Chloro-2-methyl-3-isothiazolone, 5-Chloro-2-methyl-4-isothiazolin-3-one, 5-Chloro-2-methyl-3(2H)-isothiazolone.

What is the molecular formula and molecular weight of Methylchloroisothiazolinone?

Methylchloroisothiazolinone has the molecular formula C4H4ClNOS and a molecular weight of 149.6 g/mol. Its IUPAC name is 5-chloro-2-methyl-1,2-thiazol-3-one.

Which grade and pack sizes of Methylchloroisothiazolinone can I order?

We supply Methylchloroisothiazolinone, in 100 mg, 250 mg, 1 g, 5 g packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Methylchloroisothiazolinone?

Yes. Every lot of Methylchloroisothiazolinone 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 Methylchloroisothiazolinone be shipped internationally?

Yes. Methylchloroisothiazolinone 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.

Enquire about Methylchloroisothiazolinone

We reply within one business day with price, pack options, lead time and documentation.

By submitting you agree to our privacy policy. We never share your details.

Why buyers choose Vaqora

  • Batch-traceable lots with COA
  • R&D packs to multi-tonne supply
  • IATA / IMDG dangerous-goods packing
  • EXW, FOB, CIF, DAP Incoterms
  • Custom synthesis & sourcing
How ordering works

Related products

Pirimicarb chemical structure
Pirimicarb
CAS
23103-98-2
Formula
C11H18N4O2
MW
238.29 g/mol
VQ-039124
Dichlofluanid chemical structure
Dichlofluanid
CAS
1085-98-9
Formula
C9H11Cl2FN2O2S2
MW
333.2 g/mol
VQ-039126
Quinalphos chemical structure
Quinalphos
CAS
13593-03-8
Formula
C12H15N2O3PS
MW
298.3 g/mol
VQ-039137
Isoacteoside chemical structure
Isoacteoside
CAS
61303-13-7
Formula
C29H36O15
MW
624.6 g/mol
VQ-039149
Flutriafol chemical structure
Flutriafol
CAS
76674-21-0
Formula
C16H13F2N3O
MW
301.29 g/mol
VQ-039066

More in Analytical Reagents →