CIT/MIT 14% BiocideZEELCHEM™ 501 · Manufacturer & Supplier
CIT/MIT 14% is a broad-spectrum, non-oxidizing isothiazolinone biocide made from CMIT and MIT in roughly a 3:1 ratio. ZEELCHEM™ 501 controls bacteria, algae, fungi and biofilm slime in cooling towers, paper mills, RO systems and water-based paints and emulsions.
CIT/MIT 14% Biocide Chemical Identity
| Components | 5-Chloro-2-methyl-4-isothiazolin-3-one (CMIT) + 2-methyl-4-isothiazolin-3-one (MIT) |
|---|---|
| Formula (CMIT) | C₄H₄ClNOS · 149.59 g/mol |
| Formula (MIT) | C₄H₅NOS · 115.15 g/mol |
| Ratio | CMIT : MIT ≈ 3 : 1 |
| Chemical class | Isothiazolinone biocide |
| CAS number (mixture) | 55965-84-9 |
CIT/MIT 14% Biocide Specifications
Typical specification for ZEELCHEM™ 501. Every batch is dispatched with a batch Certificate of Analysis (COA).
| Parameter | Specification |
|---|---|
| Composition | CMIT + MIT aqueous solution |
| CAS number | 55965-84-9 |
| Active isothiazolinones | 14.0 – 14.5% min |
| CMIT / MIT ratio | ≈ 3 : 1 |
| Specific gravity | 1.26 – 1.32 g/cm³ |
| pH (neat, 25 °C) | 2.0 – 4.0 |
| Appearance | Clear amber / green-yellow liquid |
Applications & Recommended Dosing
Typical starting doses. Final dosing depends on your water analysis and system conditions; our chemists can help you optimize it.
| Application | Dose |
|---|---|
| Cooling towers (shock slug dose) | 15.0 – 50.0 ppm |
| Paper & pulp slime prevention | 25 – 100 g/ton pulp |
| RO membrane offline CIP | 400 – 1,000 ppm |
| Paints, adhesives & latex emulsions | 0.05 – 0.20% |
- Cooling tower microbial control
- Paper & pulp slime prevention
- RO membrane offline cleaning (CIP)
- Paints, adhesives & latex emulsions
How CIT/MIT 14% Biocide Works
Cell penetration
Diffuses through bacterial cell walls and dense slime layers that chlorine cannot reach.
Thiol reaction
Reacts with cellular –SH (thiol) groups, blocking respiration and ATP synthesis.
Rapid kill
Growth stops within minutes; complete kill follows in 4–12 hours.
Key Benefits
- Broad spectrum: bacteria, fungi and algae
- Non-oxidizing and non-foaming
- Does not corrode heat-exchanger tubes
- Penetrates biofilm and slime matrices
- Breaks down to non-persistent products after dilution in effluent treatment
How much CIT/MIT 14% Biocide do you need?
Packaging, Storage & Safety
⬢Packaging
- 25 kg & 50 kg HDPE carboys
- 250 kg UN-approved HDPE drums
- 1,250 kg IBC totes
❄Storage & Shelf Life
- Store below 40 °C in original tightly closed containers
- Cool, dark, ventilated warehouse, away from sunlight and reducing agents
- Shelf life: 12 months in factory-sealed containers
⚠Handling & Safety
- GHS Class 8 / 6.1: corrosive and skin sensitizer
- Wear a chemical splash suit or apron, butyl or nitrile gloves, face shield and vapour respirator during transfer
- Neutralize spills with freshly prepared 5% sodium metabisulfite solution, then collect for disposal
Always read the Safety Data Sheet (MSDS/SDS) before handling. Pan-India dispatch from Vadodara, Gujarat.
TDS, MSDS & COA for CIT/MIT 14% Biocide
Request documents instantly on WhatsApp. ZEEL PRODUCT is ISO 9001:2015, ISO 14001:2015 & ISO 22000:2018 certified.
Safety Data Sheet (MSDS)
16-section GHS-format safety, handling and transport information.
Request MSDS →CIT/MIT 14% Biocide: Frequently Asked Questions
What is CIT/MIT 14% biocide and how does it work?
It is a non-oxidizing broad-spectrum biocide made of CMIT and MIT. It penetrates microbial cells and reacts with thiol groups, stopping respiration and growth of bacteria, algae and fungi.
What is the CIT/MIT dosage for cooling towers?
15–50 ppm as an intermittent shock dose, once or twice a week, to control biofilm.
What is the CMIT to MIT ratio in ZEELCHEM™ 501?
About 3:1 (roughly 10.5–11% CMIT and 3.5–4% MIT), for a total of 14.0–14.5% active.
Can CIT/MIT be used for RO membrane cleaning?
Yes, for offline clean-in-place at 400–1,000 ppm in the CIP solution for polyamide membranes.
How fast does CIT/MIT kill microorganisms?
Microbial growth is inhibited within minutes, and a complete kill occurs in 4–12 hours.
Is CIT/MIT an oxidizing biocide?
No. It is non-oxidizing, so it can be alternated with chlorine or bromine in a dual-biocide programme.
What packaging is available for CIT/MIT 14%?
25 kg and 50 kg HDPE carboys, 250 kg UN-approved drums and 1,250 kg IBC totes.
How should CIT/MIT be stored?
In original sealed containers, below 40 °C, in a cool, dark, ventilated area away from sunlight and reducing agents. Shelf life is 12 months.
What safety gear is mandatory for handling CIT/MIT?
A splash suit or apron, butyl or nitrile gloves, a face shield and a vapour respirator during transfer. It is corrosive and a skin sensitizer.
How are CIT/MIT spills neutralized?
With a freshly prepared 5% sodium metabisulfite solution, followed by collection and disposal as per local regulations.
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Bulk pricing, samples and technical support for plants across India, from Gujarat and Maharashtra to Delhi NCR and South India.