Molekula
4,5-Dichloro-2-octyl-isothiazolone
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
4,5-Dichloro-2-octyl-isothiazolone is a broad-spectrum biocide used in industrial and consumer applications to prevent microbial growth in water-based systems. It is effective against bacteria, fungi, and algae. CAS: 64359-81-5, Molecular Formula: C11H17Cl2NOS, Molecular Weight: 282.22 g/mol, Storage: Ambient, Signal Word: Danger. Molekula supplies 4,5-Dichloro-2-octyl-isothiazolone from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 g — $58.70 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White/ off white crystalline powder |
| Purity | ≥ 97.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 (8) |
| Packing Group | II |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 40-46 °C |
| Density | 1.28 g/cm³ at 25 °C (melted and so |
| Vapour Pressure | 7.4 × 10⁻⁶ mmHg at 25 °C |
| log P (octanol/water) | 2.8 |
Source: PubChem CID 91688 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90026830 |
| CAS Number | 64359-81-5 |
| IUPAC Name | 4,5-dichloro-2-octyl-1,2-thiazol-3-one |
| EC Number | 264-843-8 |
| Molecular Formula | C11H17Cl2NOS |
| Molecular Weight | 282.22 |
| Exact Mass | 281.0408 |
| SMILES | CCCCCCCCN1C(=O)C(=C(S1)Cl)Cl |
| InChIKey | PORQOHRXAJJKGK-UHFFFAOYSA-N |
| InChI | InChI=1S/C11H17Cl2NOS/c1-2-3-4-5-6-7-8-14-11(15)9(12)10(13)16-14/h2-8H2,1H3 |
| PubChem CID | 91688 |
| UN Number | UN2928 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2934102000 |
| Tariff Code | 2934100090 |
Safety & GHS
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Corrosive
GHS05
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Toxic
GHS06
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- EUH071 Corrosive to the respiratory tract
- H302 Harmful if swallowed
- H314 Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
- H330 Fatal if inhaled
- H341 Suspected of causing genetic defects
- H360 May damage fertility or the unborn child
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P264 Wash thoroughly after handling
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+341 IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 3(2H)-Isothiazolone, 4,5-dichloro-2-octyl-
- 4,5-Dichloro-2-n-octyl-3(2H)-isothiazolone
- 4,5-Dichloro-2-n-octyl-4-isothiazolin-3-one
- 4,5-dichloro-2-octyl-3-isothiazolone
- 4,5-Dichloro-2-octylisothiazol-3(2H)-one
- Anti-Foulant C-9211M
- dcoit
- Kathon 930
- SEA-NINE
- Sea-Nine 211
Frequently asked questions
What is 4,5-Dichloro-2-octyl-isothiazolone used for?
It is primarily used as a biocide in industrial water systems, coatings, marine antifouling paints, wood preservation and plastics to prevent microbial growth.
What is the chemical formula and molecular weight?
The formula is C11H17Cl2NOS with a molecular weight of 282.22 g/mol.
How should this compound be stored?
It should be stored at ambient temperature, away from moisture and incompatible materials.
What grade is available?
Available in technical grade; custom purity options may be available upon request.
Can Molekula supply this in bulk?
Yes, Molekula can supply 4,5-Dichloro-2-octyl-isothiazolone in bulk quantities; please contact sales for details.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) compliant with GHS standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.