▌ Chlorine dioxide at your convenience
By Ralph Berdin, Brenntag Nordic
February 2016
CHLORINE DIOXIDE
Properties
Molecular formula: ClO2
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Yellowish, volatile gas at room temperature
Chlorine type odour
Highly soluble, remains in the water a true, dissolved gas
Inorganic free radical in oxidation state +4
Inactivation by electron exchange in lieu of chlorine atom exchange
Favourable environmental footprint (green chemistry)
Excellent antimicrobial properties over a wide pH range (2-10)
Used for potable water treatment since 1944; commonly employed in
many other industries
 EU, USEPA approved, listed in WHO Drinking Water Quality
Guidelines
Sjef Swinkels – Brenntag Holding GmbH
3/4/2016
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CHLORINE DIOXIDE
Benefits
Sidelining many of the drawbacks and limitations known from chlorine
 Broad spectrum antimicrobial efficacy; germicide, virucide, fungicide, sporicide,
algaecide, slimicide
 Unique inactivation mechanism; oxidation of genetic machinery, no known immunity
building by microorganisms
 Powerful oxidising agent; more than twice the oxidative capacity of chlorine, but has
lower oxidation strength
 Fast acting, selective oxidation chemistry
 Oxidises without chlorinating, no (eco)toxic or carcinogenic halogenated disinfection
by-products (THMs, HAAs, AOX)
 Residual biocidal activity
 Minimises corrosion to processing equipment, tanks and lines
 Improved aesthetics (taste and odour control)
 Removes biofilm from water distribution systems
Sjef Swinkels – Brenntag Holding GmbH
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BIOFILM
Chlorine dioxide mechanism against biofilm
Effectiveness
 Chlorine dioxide diffuses through the protective layer and inactivates the
pathogens from the inside out
 Chlorine dioxide inactivates bacteria: ClO2 + bacteria → ClO2 Acid producing bacteria in biofilm convert part of the chlorite back to chlorine
dioxide: ClO2- + acid → ClO2
 Gelatinous mass production stops
 Dead biofilm is released and stripped from the surface
Sjef Swinkels – Brenntag Holding GmbH
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CHLORINE DIOXIDE
Limitations of conventional methods
What have you heard about chlorine dioxide?
 Chlorine dioxide is not stable, long term storable nor
transportable
 Dangerous feed stock chemicals
 Explosion risk at elevated concentrations and temperatures
 Impurities and by-products
 Taste and odour problems
 Corrosive (275% HCl excess; acidification and chlorides)
 Requires capex
 Generation process is complex, safety measures, staff
training, servicing and maintenance
 Not suitable for small applications
Sjef Swinkels – Brenntag Holding GmbH
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CLORIOUS2
Brenntag’s chlorine dioxide program
With Clorious2, Brenntag is committed to deliver its clients the power and
versatility of chlorine dioxide in sanitation, oxidation and disinfection with
enhanced safety, reliability and ease of use.
 By overcoming the limitations and drawbacks of conventional methods
 By improving ease of use, handling and operation
 By maximising safety
 By enhancing quality
 By increasing access to chlorine dioxide for a wider public
 By discovering and developing new applications
Sjef Swinkels – Brenntag Holding GmbH – Confidential
3/4/2016
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PACKAGING
Dedicated drums
 Sealed drums (208 kg net)
 Fluorinated HDPE
 TÜV tested, BAM approved
 Integrated extractor
Sjef Swinkels – Brenntag Holding GmbH
3/4/2016
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PACKAGING
Dedicated cans
 Sealed cans (28 kg net)
 Metal with fluorinated HDPE
liner
 TÜV tested, BAM approved
 Integrated extractor
Sjef Swinkels – Brenntag Holding GmbH
3/4/2016
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DISPENSING
CDS TriSure™
 Ensures dry coupling and decoupling
 No liquid or vapour release
 No exposure to the chemical for operators
 Maximises work place safety
 Materials compatible with chlorine dioxide
 Available in both pack sizes
Sjef Swinkels – Brenntag Holding GmbH
3/4/2016
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CLORIOUS2
The ultimate chlorine dioxide delivery system
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Transportable, ready-to-use chlorine dioxide solution
No on site chemical mixing, no generator, no handling
High purity, concentrated chlorine dioxide in aqueous solution (approx. 0.6%)
Long term stable and replicable
High efficiency, almost 100% conversion of chlorite into chlorine dioxide
Patented chemistry based on oxidation of chlorite; no acidification or chlorination
No flavour taint at concentrations < 0.5 ppm chlorine dioxide
Closed system, no chemical exposure or odour
No flavour taint
Safe to use, easy to apply
Safe, simple, pure
Sjef Swinkels – Brenntag Holding GmbH
3/4/2016
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REGULATIONS
Overview of applicable regulations and standards
 REACH: pre-registered under No. 17-2119892809-15-0000
 Biocidal Products Regulation: Chlorine dioxide not added to
Union list yet
 After inclusion in Union list: 24 months to submit a dossier
for product authorisation
 Inclusion in Union list not expected before 2017
 Transitional regimes vary per EU Member State
 Precursors listed in EN 12671 and in accordance with EN
938 and EN 12926
 Bactericidal in compliance with EN 1276
 Yeasticidal in compliance with EN 1650
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Thank you!
For more information please contact:
Ralph Berdin
Brenntag Nordic AB
Koksgatan 18
P.O Box 50 121
S-202 11 Malmö
Sweden
Phone: +46 40 28 73 00
Mobile: +46 705 28 73 25
E-Mail: [email protected]
http://www.brenntag.com
Please be informed that this presentation contains confidential information. The presentation shall be kept confidential and shall not be distributed without prior written
permission of Brenntag Holding GmbH.
Sjef Swinkels – Brenntag Holding GmbH
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