TOPIC:

Comparison of the suitability of the bottles materials PE and PET for the storage and retention of sodium chlorite
by Armin Schüttler

Not every material is suitable for the storage of sodium chlorite. From our manufacturer of sodium chlorite used for storage tanks of stainless steel or "polyolefins" prescribed.
Polyolefins denote a class of plastics to the PE also belongs.
PET does not belong to this class.
Many vendors sell their products in PET bottles. The only problem is, the PET, to our knowledge, no manufacturer is mentioned as a suitable material for the storage of sodium chlorite.
PE (polyethylene) is a chemically completely different substance than PET (polyethylene terephthalate). This is what we want to illustrate for you.
The images show areas of the polymer chains.



The square brackets mark in each case a repeating unit (monomer). A long chain of these units is then the corresponding polymer.




The red arrows indicate carbon atoms, which, due to the proximity of oxygen low electron density. These bodies are sensitive to reactions with sodium chlorite, so a fraction of the polymer chains is possible.

This process should take place repeatedly, a slow fragmentation of the bottle material is possible. The smaller the pieces are, the better they can be absorbed into the sodium chlorite.

We assume that:
The older the solution is, the bigger the fragments of it.
The older the solution is, the smaller the fragments.
The smaller the fragments are, the more of it dissolves in sodium.

Based on these considerations, we can by the use of PET bottles, for storage of sodium chlorite, really only advise.
For this reason, we only use bottles made of PE (polyethylene). We have used anti-freeze are made of PP (polypropylene). PP counts as PE to the group of polyolefins and is therefore also suitable for the storage of sodium chlorite.

The red arrows indicate the carbon atoms due the proximity of oxygen low electron density.

These bodies are sensitive to reactions with sodium chlorite, whereby a fraction of the polymer chains is possible.This process should take place repeatedly, is a slow decomposition of the bottle material possible. The smaller the fragments are the better they can in the Sodium chlorite solution are added.

Caution: We assume that these
Effects can be used with PET ...
Buy MMS therefore only in PE-bottles!
The older the solution is the more fragments of it.

The older the solution is so small, these fragments.

The smaller the fragments are the more of them dissolve in the sodium chlorite.

Generally speaking, sodium must be stored only in PE, glass or stainless steel

Chlorine dioxide solution may only be stored in glass!

A few seconds of contact with plastic (eg syringes PE) contaminate the solution.

Steve,
What type of tubing do you prefer?

Thank you,i did suspect that CDS when made ready for drinking would be better stored in
glass,so will use a coloured glass bottle in future. I am a new comer to this forum and have already found answer's to two queries that are in my mind.

Acids in Safety Bottles


Safety and high quality from the same bottle!

Customer issue

Glass bottles have very long useful lives. As containers for all manner of chemicals, they remain a valuable inert material for everyday use in the laboratory. Yet however much care is taken, breakage does occur. It is something that simply has to reckoned with. Serious injury, contamination or consequential damage can be the result. You can avoid it with us!

Merck’s solution
All our experience in dealing with the hazard potential of acids in glass bottles has been incorporated in the specifications of the new Merck “Safebreak” bottle, the safest safety bottle!

“Safebreak” is a glass bottle coated with polyethylene. Should e.g. the bottle fall and break, the liquid and glass splinters are reliably retained within the polyethylene coating. Each Safebreak bottle is fitted with a screw cap made of polyethylene but with an integrated PTFE component. This cap renders the bottle absolutely airtight so that no liquid or vapour can escape.



Benefits for you

The computer-designed exclusive Merck Safebreak bottle combines all the advantages in one: It meets all safety requirements and it ensures that the customer receives exactly the same quality of content as that dispatched from Merck. It can be incorporated in all logistic systems.
The Safebreak bottle withstands considerable impact force. Should a breakage occur, the acid and any glass splinters can be reliably contained and the user cannot be injured by escaping acid. Even after frequent opening and closing, the screw cap remains perfectly intact so that the environment is protected from leakage and contamination. The bottle can be easily and ecologically disposed of and re-used, just as the conventional glass bottle, and the PE is burnt off without affecting the environment. No vapor can contaminate the workplace environment!.




The benefits of glass plus the safety of PE bottles
Merck’s acids for analysis – available in Safebreak bottles

by Merck Millipore

Glass bottles are still the most preferred packaging for reagents. Also because acids in glass remain stable longer than those stored in PE bottles. Unfortunately glass can break. Merck has developed the Safebreak bottle, a revolutionary solution that combines the stability benefits of glass with the safety benefits of PE.

Engineered with safety, quality and the environment in mind

The Safebreak safety bottle is a glass bottle coated with polyethylene. If the bottle should break the PE coating contains the acid and glass splinters. The benefits of the Safebreak bottle don’t stop there. Each Safebreak bottle is fitted with a screw cap made of polypropylene with an integrated PTFE component. This cap makes the bottle completely airtight. No liquid or vapor can escape. Finally, the Safebreak bottle can be disposed of as regular glass; during incineration, the PE coating is burnt off without affecting the environment.

Hi Charlotte. What type of syringe do you use for for CDS. What does it look like.
Are you still making CDS in the 3 bottles with tubing between them ?
And why does Steve not use the plastic tubing. If he said so I must have missed it.
Thanks,

Charlotte , Thanks for the descriptive photos and I will check our local feed store for them.. I like the storage bottles that Alfernandes posted to perhaps use for CDS. Its good to know what is out there.

Hi Charlotte and Woofy

Other link of Safebreak Protected Bottles:

Creaco Safebreak® Protected Bottles

www.creaco.co.uk/bottles.htm





Why protect bottles?

Glass is the preferred medium for the packaging of liquid chemicals. It is basically inert, transparent and has good surface quality allowing for easy cleaning. It's disadvantage is the vulnerability to breakage.
If a bottle of dangerous chemicals is dropped (mineral acids, strong alkali etc) the results can range from widespread contamination of glass and chemical contents in sensitive areas, to a worse case scenario of serious injury to laboratory personnel, especially given the hazardous nature of some of the chemicals used, or other traumatic consequences.

Creaco primarily developed Safebreak® protected bottles for the chemical industry, for safety in such places as laboratories.


Creaco Safebreak® Protected bottles provide the solution.

The Creaco Safebreak® protected bottle provides a solution to this problem. The protective coating on the bottle will contain all the glass and hazardous chemicals in case of an accident, minimising risk and contamination, and making clearing up the hazard much easier.
The protective surlyn® coating on the bottle has a good resistance to most solvents and only the most aggressive acids can affect it after a significant period of exposure. This means that the bottles contents, even if hazardous, will be contained within the protective 'skin' in the event of an accident. In addition it has a high tear strength and exceptional clarity. The coating has the added advantage of raising the breakage threshold of the glass container making it safer in transit.

Creaco supply Safebreak® bottles to the chemical industry ranging in size from 10ml to 4000ml. We have supplied the coating service to major chemical companies in the UK and Europe for over twenty years and are acknowledged throughout this field.


Creaco protects a wide range of bottles

Creaco Safebreak® protected bottles are not just limited to the chemical industry. Cosmetic companies are supplying and developing new products in glass aerosol bottles. The propellant (containing no CFC's) operates at a high pressure and could previously only be supplied in tin plate containers. Glass is the preferred medium for many cosmetics as it's aesthetic properties together with it's weight and clarity convey the impression of purity and quality of product. A disadvantage of glass is that it can break, and if the container is pressurised, the consequences of breakage can be serious.

Creaco Ltd have a solution to this problem. A thick covering of DuPont Surlyn®, a tough absolutely transparent plastic with a high tear strength is applied to the glass. The plastic coating faithfully follows the contours of the bottle, completely covering any difficult shapes. Should the aerosol be broken all the glass fragments and normally all the contents are contained. In extreme cases a small seepage of product may occur but there is no danger of flying glass. The coating is environmentally friendly and contains no ozone depleting chlorine or fluorine compounds. It also meets all food and drug industry standards and passes all appropriate flammability tests.

Creaco Ltd can also apply coloured coatings, either transparent, translucent or solid colour and metallic or pearlescent effects to glass, giving exciting marketing potential. In addition the coating readily accepts a wide range of labeling methods. Creaco offer a protection service for your custom aerosol bottles.

I did not find an answer to " where can i find a supply of HDPE bottles with metered tips"?
I have tried eye dropper one and two ounce bottles for storing activated mms in the refrig. and the rubber/plastic bulbs on the ends deteriate and add black particles to the dispenced solution.
Any suggestions and experience is appreciated.

I answered you just now in the bee thread.