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Are you currently working on CDS and would like more in-depth information? Then you've come to the right place. Below we answer the most frequently asked questions and go into many details about CDS.
In this article, we cover the following CDS products and manufacturing processes:
Chlorine dioxide is a yellow-reddish gas with a pungent, suffocating odor.
Chlorine dioxide is a chemical compound of chlorine and oxygen.
The chemical formula is
ClO2
This means that we have one chlorine atom and two oxygen atoms.
Boiling point: 11 °C
Decomposition from 45 °C
Chlorine dioxide solution is by definition water in which chlorine dioxide gas is dissolved.The term "CDS" comesfromchlorine dioxidesolution .InEnglish"CDS "Chlorine dioxide solution.
A standardized value for the concentration of chlorine dioxide is 0.3 % or 3000 ppm (parts per million). This means: 1 liter CDS contains 3 grams of chlorine dioxide gas.
Chlorine dioxide is used as a bleaching agent in the textile and pulp industry and has now largely replaced chlorine.
In various countries, chlorine dioxide solution is used as a food additive, including as a flour treatment agent and preservative.
The solution is widely used in the USA to sterilize poultry, red meat, fish, seafood in abattoirs and fruit and vegetables.
Chlorine dioxide is an excellent disinfectant.
As a gas, it is used in areas such as building disinfection and disinfection of laboratories. Thanks to its gaseous properties, chlorine dioxide is also used successfully to combat mold and fungi.
In certain countries (e.g. Japan), chlorine dioxide is used to disinfect the air. This is carried as a solid in small bags around the neck. A defined quantity of chlorine dioxide gas constantly flows into the wearer's ambient air and sterilizes it.
In addition, small capsules and bags are placed at certain points in buildings, where they release flowing chlorine dioxide gas and thus keep the room air and surfaces germ-free.
Drinking water treatment
The city of Zurich and various other cantons use chlorine dioxide solution to disinfect drinking water in the water supply. In Germany, it has been used for years to disinfect drinking water from Lake Constance.
German drinking water ordinance
ClO2: 0.2-0.4 mg/l.
Is chlorine dioxide solution the same as chlorine in the swimming pool?
Chlorine gas, sodium hypochlorite or calcium hypochlorite are used in swimming pools. These must not be confused with chlorine dioxide, as they have different chemical compositions and are fundamentally different!
Is CDS bleaching lye?
Chlorine dioxide solution can bleach clothes, but it has nothing to do with the chlorine bleach solution that is often incorrectly cited in the press.
See Wikipedia:https://de.wikipedia.org/wiki/Natriumhypochlorit.
Both chemical formulas contain the chlorine atom, but are completely different:
- Chlorine dioxide has the formula
ClO2
bleaching lye is sodium hypochlorite and has the formula NaClO (e.g. swimming pool chemistry)
.While a correctly produced chlorine dioxide solution has a neutral pH value (approx. pH 7), bleaching lye has an extremely high pH value >11!
CDS hardly reacts with acid. Accidental splashes on the skin can be quickly washed off with water without leaving any residue.
However, NaClO reacts violently and dangerously with acids!
Contact with the skin or garden can lead to serious damage to health, as the chlorine bleach solution is viscous and can only be dissolved with a lot of water. water can be rinsed off slowly. This means that the exposure time is considerably longer than with CDS, for example.
CDS compared to chlorine, ozone and hydrogen peroxide
Chlorine dioxide is even more effective against bacteria than chlorine!
In contrast to chlorine, CDS is also effective against viruses and many protozoa (single-celled organisms).
Many scientific studies, particularly in the USA and Japan, have confirmed this for many years.
As an alternative to chlorine, ozone gas (O3) is also used. The disadvantage is that ozone can react with bromides, which occur naturally in water. This reaction forms carcinogenic bromate. This reaction does not take place with chlorine dioxide.
In medicine, hydrogen peroxide (H2O2) is still frequently used in medicine to disinfect the human body. Unfortunately, this (in contrast to CDS) destroys human tissue as well as germs due to its high redox potential.
Redox potential
The redox potential (ORP) is a measure of the electrical voltage that indicates how strongly a substance releases or absorbs electrons.It is measured in volts (V) measured.
| ORP Ozone | 2.07 Volt |
| ORP hydrogen peroxide | 1.78 volts |
| ORP CDS | 0.95 Volt |
The cell membranes of human cells remain tight at an ORP of CDS 0.95 volts. But not at higher voltages.
This means that hydrogen peroxide and ozone attack the human cells as well as the pathogens. This is in contrast to CDS.
"Toxicity" of CDS (source Wikipedia)
The mean dose "LD50" is usually given as a dose whose lethal effect relates to 50 percent of the observed population within 3 days.
Comparison of "lethal dose" LD50 of common salt and CDS
Assumption: human of 70 kg body weight
LD50 common salt (NaCl) : 3,000 mg/kg body weight or 3g/kg body weight.
Amount of table salt LD50: 70 * 3g =210 g NaCl per person
LD50 chlorine dioxide (ClO2): 94 mg/kg body weight.
Content in 1 kilo CDS: 3 gramsClO2
i.e. 1 g or 1 ml CDS contains 0.003gClO2
LD 50ClO2: 70 * 0.094g = 6.58 g
ClO2 per person6,58 gClO2/3 gClO2 /l =2.19 liters CDS per person
To have a 50% probability of dying within 3 days, you must ingest either 210g of table salt or 2.19 liters of CDS at once!
This disproves all claims about the toxicity of CDS!
Decomposition products of CDS
Chlorine dioxide decomposes during use and decomposition (more or less slowly during storage) in minute quantities of water and common salt. There are no other residues.
Storage: Can CDS "run off"?
Chlorine dioxide solution steadily decreases in concentration.
The speed of this process depends not only on its pH value, which should be as neutral as possible (it is much faster at a lower pH value), but also on storage.
The gas tends to decompose, causing the concentration of the solution to decrease.
Depending on the frequency of use and the storage temperature, exposure to light, the concentration of the contents may decrease more slowly or more quickly over time.
Reason: When the bottle is opened (especially above 11°C), a smaller amount of chlorine dioxide gas escapes from the bottle each time and the concentration decreases. Light (UV radiation) can also neutralize the chlorine dioxide. When stored at >45°C, CDS decomposes.
We make the following recommendation Storage:
- Store upright
- Protect from sunlight
- store below 11°C
- Always close containers tightly
- Bottle in use: optimal storage in the refrigerator
Quality test: Is my CDS still good?
A simple way to check: As long as the drops are yellow and smell of "swimming pool", it still contains at least a certain amount of chlorine dioxide. If necessary, increase the application quantity accordingly.
A more precise "analysis option" is ourCDS-Messstäbchen . These provide an approximate value for the effective concentration.
Colorless solutions without a "swimming pool odor" have lost their effect and can be poured into the sink.
How long does CDS keep in the refrigerator?
The minimum shelf life of our CDS guarantee is 6 months, provided the container is unopened, is stored in a dark and cool place.
Depending on the storage conditions, the CDS can remain usable for many months longer.
Traveling with CDS
When traveling, make sure that CDS is kept away from heat and sunlight.
Practical alternative: to CDS: Our world innovation "CDS powder". Only supplied to professional users
CDS powder is an ideal dry CDS carrier that is 100% transportable and storable!
Heat and sunlight cannot harm the powder.
What's more, a bag of CDS powder is lighter than 5 grams and can be stored anywhere!
If you add the CDS powder in 100 ml of water, you will obtain pure, pH-neutral CDS with a concentration of 0.3% after 8-10 hours!
Alternative to CDS Powder: CDS Fix (available for all)
CDS Fix consists of a 100ml bottle of base agent and a bag of activator.
Advantage: These components can be exposed to heat and sunlight without hesitation and can only be used when needed.
Add the activator to the base agent, CDS 0.3% is obtained after 8-10 hours.
General production methods for CDS
There are various methods for producing CDS:
The following manufacturing methods are generally known as chemical and/or electrolytic reactions.
However, the concentration, pH value and residual substance content (purity) vary greatly depending on the components and process.
The above methods are generally known to end users and are used by them more or less successfully.
Then there are numerous other processes that are known and used by the industry.
At mychem.ch you can find the right chlorine dioxide solution in various ways.
The production and quality including the concentration of our CDS and its components are described in the respective articles in the store.
Please understand that we keep the exact formulations of our own developments secret.
For information on the respective production method of CDS powder and the two-component solution (sodium chlorite & hydrochloric acid), please refer to the product description.
BioClean
BioClean is an officially approved biocide with the approval number CHZN3849.
BioClean is a disinfectant and also consists of our chlorine dioxide solution of 0.3% chlorine dioxide (ClO2) in water.
Disinfectants are substances that kill microorganisms and can therefore prevent the transmission of pathogens.
Instructions for use for drinking water disinfection
Pre-filter raw water (e.g. stream water) through a cloth (e.g. pocket handkerchief) or filter, depending on contamination and turbidity caused by suspended matter. Add 0.7 ml or 12-18 drops of BioClean per liter of water and mix briefly. Is sterilized after 20 minutes of dark storage. Very suitable for disinfecting drinking water in motorhomes. The cleaner the raw water, the less BioClean is required.
Instructions for use for surface disinfection:
Lightly moisten the surface to be cleaned with damp household paper or cloth. Then, depending on how dirty it is, apply 5-10 drops per dm2 area of BioClean. Spread evenly over the surface to be cleaned. Repeat treatment as required.
BioClean is a product with a wide range of applications. It can be used in a wide variety of everyday situations. Here are a few examples and suggestions:
Instructions for preparing chlorine dioxide solution from sodium chlorite and hydrochloric acid in drops
Preparation
Make sure that the room is well ventilated, as chemical chlorine dioxide gas escapes during the reaction and you must not inhale it.
Caution: Only mix small quantities, e.g. three drops each. Larger quantities produce large amounts of gas.
Procedure
Our matching products: Sodium chlorite 24-26% (or 25% pure) (NaClO2) & hydrochloric acid 4% pure (HCl)
Quantity ratioof finished Mychem CDS compared to the self-prepared CDS
One drop ofNaClO2 and HCIeach corresponds to theClO2 effective quantity of eight drops of our finished CDS.
Example: 3 drops ofNaClO2 mixed with 3 drops of HCl = 24 drops of Mychem CDS
water
Commercial chemicals are usually available as "technical grade". This is usually the "worst" quality and always contains a relatively large amount of "impurities" from the precursors and the manufacturing process in plants that were not very clean. "Normal" sodium chlorite and hydrochloric acid contain large amounts of such "impurities" (mostly toxic heavy metals).
The CDS obtainedby mixingNaClO2 and HCl logically contains these impurities and is usually nowhere near the purity of our finished, high-purity CDS.
For the production of our CDS products CDS powder, CDS Fix, CDS and BioClean, we only use high-purity, very expensive raw materials that are not commercially available.
The manufacturing process of our CDS is a special, complex Mychem in-house development based on the reaction process.
The result is our CDS in its purest form with truly 0.3%
ClO2 and a neutral pH value (approx. pH7).
| CDS Powder | CDS-Fix | CDS 0,3% | >BioClean | Sodium chlorite & hydrochloric acid | |
|---|---|---|---|---|---|
| Shelf life | >> 3 years | >> 3 years | > 6 months | > 6 months | > 5 years |
| Concentration | Full, decreasing from 0.3% | Full, decreasing from 0.3% approach | 0.3% decreasing | 0.3% decreasing | depending on production method 0.05 - 0.3% |
| purity | ultrapure | ultrapure | ultrapure | ultrapure | Depending on the production method, many by-products may be present |
| Size, manageability | < 5 grams, transportation, safe storage | 150 grams, transportation dangerous | >130 grams, transportation dangerous | >130 grams, transportation dangerous | >260 grams, transportation dangerous |
| Preparation effort | 8-10 hours maturing time | 8-10 hours maturing time | ready immediately | ready immediately | 3 minutes to several days (pickle jar method) |
Analysis values of CDS purchased on the market
The mychem chlorine dioxide solution with real 3000ppm
ClO2 has a strong yellow coloration and a pungent odor.
The content is monitored during production with an accurate analyzer.
Comparisons with all externally purchased CDS show that these areonly around 600-1000 ppmClO2!
The pH value is between 3.5 and 4.7, which is extremely acidic and dangerous in some cases.
Conclusion: The mychem CDS is very clean, effective and extensive!
