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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1980366Generated: October 26, 2026

2-Methyl-3,4,5-trichloroisothiazolium fluorosulfonate → 4,5-Dichloro-2-methyl-4-isothiazolin-3-one

https://huagongshe.com/reaction/1980366

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-Methyl-3,4,5-trichloroisothiazolium fluorosulfonateHCID 12889022—
SolventSodium AcetateHCID 517045—
Product4,5-Dichloro-2-methyl-4-isothiazolin-3-oneHCID 14701770.3%

Reaction Steps

2-Methyl-3,4,5-trichloroisothiazolium fluorosulfonate (16.9 g, 0.058 mol) was added in portions to 150 ml of a saturated sodium acetate solution. After stirring for 30 min. the solid was collected, washed with water, and recrystallized from ethanol to yield 7.5 g (70%) of 4,5-dichloro-2-methyl-4-isothiazolin-3-one, mp 119°-120°.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04508908
Source datasetuspto-grants-1985_04
ORD IDord-72c5f81b3a8747988a0b633c2c04b580
Source noteuspto-grants-1985_04