SafeSol Corrosion Information

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SafeSol Corrosion Information

Introduction	Effect on Metals
Resistance to Non-Metal Materials of Construction

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SafeSol Corrosion Information

Corrosion - Introduction

SafeSol is a 50% hydrogen peroxide solution catalysed using colloidal silver and stabilised using a number of other trace additives. The pH of the chemical is around 2.3
SafeSol is used at a variety of concentrations. The neat chemical will be dosed using conventional dosing equipment and it is important that tanks which contain the chemical and pumping systems and devices which are used to dose the chemical are fabricated in appropriate materials.
SafeSol is used as a surface disinfectant and it is important that the solution strengths used (generally 1% to 5%) will not affect any materials with which the solution will come into contact.
Finally SafeSol is used as a biocide for water treatment. Solution strengths are unlikely to exceed 200 ppm for this application and it is important to be aware of the effect, which dilute SafeSol might have on water system materials.

SafeSol is an extremely strong oxidising agent. It is also, in its neat form, acidic. It decomposes readily in the presence of soluble iron and readily reacts with reactive organic materials. The following tables are based on the best corrosion data we have available at present. Our experience indicates that neat solution will not cause any problems with any of the conventional dosing pumps or dosing tanks. The strengths found in water systems should pose no threat to the integrity of the system although corrosion products in steel systems could lead to the decomposition of the SafeSol solution. The reaction of SafeSol with organics means that it will remove biofilm and microbiological slimes from pipe work internals.

SafeSol and its Effect on Metals

Material of Construction	Corrosion Rate	Comments on Corrosion	Notes Corrosion rates are given as thousands of an inch per annum (mpy) In all cases apart from those mentioned the corrosion rates apply at temperatures up to 100 0C Recommendations The chemical will not present a problem in water systems (apart from the situation regarding soluble iron). The product should not be sprayed on to the metals indicated in the table viz copper, copper alloys, aluminium, zinc or galvanised steel or Ni /Mo alloy at concentrations greater than 1%. Careful consideration needs to be given to storing the neat chemical in a metal container. SafeSol Limited would recommend that the chemical should not be stored in metal containers and that an appropriate plastic is used.
Cast Iron (Grey)	< 20 mpy	10%SafeSolXL to neat
Silicon cast iron	20 - 50 mpy	10%SafeSolXL to neat. Do not spray with 5% solution
Mild Steel	< 20 mpy	10% to 50% satisfactory, but beware catalytic breakdown
Stainless Steel 302, 304, 321, 347	< 20 mpy	10% - 50% satisfactory
Austenitic Stainless Steels (molybdenum stabilised) 316, 317	< 2 mpy < 20 mpy	10% all other concentrates
Super Stainless )incelloy/Hastelloy)	< 2 mpy < 20 mpy	10% All other concentrations
Copper/Copper Alloys	< 50 mpy	Not recommended at concentrations greater than 2%
Nickel	< 20 mpy	Up to 20% SafeSolXL
Nickel / Copper	< 20 mpy	Up to 20% SafeSolXL
Ni /Cr / Fe 76-16-7	< 20	All concentrations and all temperatures above 30°C
Ni / Mo		Not advised above 2% SafeSolXL
Aluminium	< 20	Not advised above 2% SafeSolXL
Lead		Not advised above 2% SafeSolXL
Platinum	< 2	All concentrations suitable
Silver	< 2	All concentrations suitable
Titanium	< 2	All concentrations suitable
Zinc		Do not use above 2% SafeSolXL
Galvanised Steel		Do not use above 2% SafeSolXL

SafeSol and its Resistance to non-metal materials of Construction

Material of Construction	Effect of SafeSol and Comments	Notes The neat chemical can be stored in polypropylene, polyethylene or PVC drums. All dosing pumps tested in SafeSol have demonstrated that conventional materials are unaffected by all concentrations of SafeSol.
Acetyl Co polymer	Satisfactory
ABS	Do not use SafeSolXL above 20%
Cellulose Acetate	Do not use SafeSolXL above 10%
Epoxy	Satisfactory
Chlorine Sulphonyl Poly	Satisfactory
Flurocarbons	Satisfactory
Chemical Glass	Satisfactory
Nylon	Satisfactory
Polyester fibreglass	Satisfactory
Polythylene fibreglass	Satisfactory
Propopylene	Satisfactory to 80°C
PVC	Satisfactory
PVdf	Satisfactory
Butyl Rubber	Satisfactory
Fluorine containing rubbers	Satisfactory
Natural Rubber	Do not use