Basic information
- CAS
55965-84-9- Standard SMILES
Cn1sc(Cl)cc1=O.Cn1sccc1=O- InChIKey
QYYMDNHUJFIDDQ-UHFFFAOYSA-N- Molecular formula
- C8H9ClN2O2S2
- Average molar mass
- 264.8 g/mol
Overview
industrial biocide & cosmetic preservative formulation; contains methylcholoro-isothiazolinone and methylcholoroisothiazolinone
Names & identifiers
- Preferred name
- Kathon
- IUPAC
- 5-chloro-2-methyl-1,2-thiazol-3-one;2-methyl-1,2-thiazol-3-one
- English name
- Methylchloroisothiazolinone/methylisothiazolinone mixture (MCIT/MIT)
- Molecular formula
- C4H5NOS.C4H4ClNOS
- Molecular weight
- 264.75
Names & synonyms
Show more names
Database identifiers
- CAS
55965-84-9- PubChem CID
- 41679
- ChEMBL
CHEMBL108095- EC Number
- 611-341-5、911-418-6、932-593-5
Properties
Computed structural properties
- Topological polar surface area
- 91.2 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 0
- Heavy atoms
- 15
- Formal charge
- 0
- Complexity
- 277
Experimental & physicochemical properties
Physicochemical properties
- Boiling point
- 100.1 ℃ · 100.1℃ at 101.325kPa
- Density
- 20 · d20 1.19
- vapor pressure
- 0.003 · 0.003-17Pa at 20-45℃
- storage temp.
- Sealed in dry,Room Temperature
- solubility
- Chloroform (Soluble), DMSO (Slightly), Methanol (Slightly), Water
- form
- Liquid
- color
- Colorless to light yellow
- PH
- 3.43 at · 3.43 at 20℃ and 10g/L
- InChI
- InChI=1S/C4H4ClNOS.C4H5NOS/c1-6-4(7)2-3(5)8-6;1-5-4(6)2-3-7-5/h2H,1H3;2-3H,1H3
- InChIKey
- QYYMDNHUJFIDDQ-UHFFFAOYSA-N
- SMILES
- O=C1C=C(SN1C)Cl.O=C1C=CSN1C
- LogP
- -0.34 · -0.34-0.81 at 10-30℃ and pH5-9
- Surface tension
- 72.6 · 72.6-73mN/m at 1-1.106g/L and 19.5-20℃
- Dissociation constant
- 2.81 · 2.81-4.2 at 20-25℃
- Indirect Additives used in Food Contact Substances
- 5 · 5-CHLORO-2-METHYL-4-ISOTHIAZOLIN-3-ONE MIXTURE WITH 2-METHYL-4-ISOTHIAZOLIN-3-ONE
- FDA 21 CFR
- 175.105 · 175.105; 176.170
- FDA UNII
- 15 O9QS218W · 15O9QS218W
- EPA Substance Registry System
- 5 · 5-Chloro-2-methyl-3(2H)-isothiazolone mixt. with 2-methyl-3(2H)-isothiazolone (55965-84-9)
- Symbol(GHS)
- 6 · GHS06,GHS05,GHS09
- Signal word
- Danger
- Hazard statements
- 301 · H301-H310-H314-H317-H330-H410
- Precautionary statements
- 264 · P264-P270-P301+P310-P321-P330-P405-P501-P262-P264-P270-P280-P302+P350-P310-P322-P361-P363-P405-P501-P260-P264-P280-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P305+P351+P338-P405-P501-P261-P272-P280-P302+P352-P333+P313-P321-P363-P501-P260-P271-P284-P304+P340-P310-P320-P403+P233-P405-P501-P273-P391-P501
- Toxicity
- 50 · LD50 (mg/kg) orally in rabbits: 30; i.p. in male, female rats: 4.6, 4.3; LC50 (6 day) in trout, sunfish (mg/l): 0.14, 0.54; LC50 (8 day dietary) in Bobwhite quail, Peking duck (mg/kg/day): >60, >100 (J. Am. Coll. Toxicol.)
- REACH Registrations
- Active
Safety & regulation
GHS classification
GHS Classification
Danger
H301: Toxic if swallowed [Danger Acute toxicity, oral]
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, P362+P364, P363, P391, P403+P233, P405, and P501 (click each P-code to see the statement)
This chemical does not meet GHS hazard criteria for < 0.1% (1 of 1945) of reports.
Danger
H301 (99.8%): Toxic if swallowed [Danger Acute toxicity, oral]
Hazard information
Regulatory Information
3(2H)-Isothiazolone, 5-chloro-2-methyl-, mixt. with 2-methyl-3(2H)-isothiazolone is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of 3(2H)-Isothiazolone, 5-chloro-2-methyl-, mixt. with 2-methyl-3(2H)-isothiazolone are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)
Status: Active Update: 14-03-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/23870
Mixture of methylchloroisothiazolinone and methylisothiazolinone: Does not have an individual approval but may be used under an appropriate group standard
Hazard Classes and Categories
Acute Tox. 3 (99.8%)
Acute Tox. 3 (100%)
Acute Tox. 4 (100%)
Acute toxicity (inhalation) - category 2
Acute Tox. 2
Safety data
- Toxicity
- LD50 (mg/kg) orally in rabbits: 30; i.p. in male, female rats: 4.6, 4.3; LC50 (6 day) in trout, sunfish (mg/l): 0.14, 0.54; LC50 (8 day dietary) in Bobwhite quail, Peking duck (mg/kg/day): >60, >100 (J. Am. Coll. Toxicol.)
- Signal word
- Danger
- Symbol(GHS)
- GHS06,GHS05,GHS09
- Hazard statements
- H301-H310-H314-H317-H330-H410
- REACH Registrations
- Active
- Precautionary statements
- P264-P270-P301+P310-P321-P330-P405-P501-P262-P264-P270-P280-P302+P350-P310-P322-P361-P363-P405-P501-P260-P264-P280-P301+P330+P331-P303+P361+P353-P363-P304+P340-P310-P321-P305+P351+P338-P405-P501-P261-P272-P280-P302+P352-P333+P313-P321-P363-P501-P260-P271-P284-P304+P340-P310-P320-P403+P233-P405-P501-P273-P391-P501
Chemistry & industry
Pharmacology
Uses & manufacturing
Applications
DescriptionKathon 886 metalwork fluid is a mixture of the two isothiazoliones contained in Kathon CG, at a 13.9% concentration. It is mainly contained in metalwork fluids. As an active component of Aigezid Ⅱ and contained in a water bath used for phtotographic development, it caused contact dermatitis in a photograph developer.
DescriptionMethylchloroisothiazolinone/methylisothiazolinone mixture (MCIT/MIT) is a mixture of isothiazolinone-derived biocides. It is effective against Gram-positive and Gram-negative bacteria with MIC values of 0.0002, 0.0002, 0.00005, and 0.00005% (w/w) for S. aureus, P. aeruginosa, A. niger, and C. albicans, respectively. MCIT/MIT can elicit contact sensitization. Formulations containing MCIT/MIT have been used for controlling microbial growth in industrial and household products.
UsesAntimicrobial preservative in cosmetics, hygeine products, paints, emulsions, cutting oils, paper coatings, and water storage and cooling units.
Upstream & downstream products
Upstream raw materials
Suppliers100 total
Related reactions
Compound notes
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