Blends 

Oxyper SBC50/50

Oxyper SBC50/50 is a 50/50 blend of oxyper S131 and soda ash light particularily suitable for laundry additive formulations.

Oxyper SBC60/40

Oxyper SBC50/50 is a 60/40 blend of oxyper S131 and soda ash light particularily suitable for laundry additive formulations.

OXYPER® S, sodium carbonate peroxyhydrate, is an oxidising agent which can be decomposed by water, direct sources of heat, catalysts etc. Decomposition is accompanied by the liberation of oxygen and steam which can support combustion and cause pressure bursts in confined spaces. Decomposition in the presence of organic material can be rapid and highly exothermic.

We recommend the following general guidelines for storage of sodium carbonate peroxyhydrate:

• Store at <40oC in a dry area.
• Protect from direct sunlight.
• Keep away from heat sources.
• Avoid contamination by moisture, dirt or other chemicals.
• Keep away from organic material, acids, alkalis, reducing agents and metallic contamination.

Contact your local Solvay Office for further information.

OXYPER® sodium carbonate peroxyhydrate is available both in 25 kg and in I tonne bulk bags.

For larger applications, OXYPER® products can be delivered in bulk.

Please contact your local Solvay Office for further information.

OXYPER® products (UN 1479) are oxidisers in category 5.1 of the ADR (road), RID (rail), IMDG (sea) and IATA (air) transport regulations.

The transport of sodium carbonate peroxyhydrate may be subject to special restrictions in certain countires.

Road transport must always be covered by a transport safety sheet (TREMCARD).

When handling OXYPER® S products always wear gloves, dust mask and goggles. Practice good industrial hygiene. Only use equipment made of suitable materials, e.g. plastic, stoneware, glass, stainless steel (e.g. 316L) and avoid the use of incompatible materials.

For more detailed information please refer to the Material Safety Data Sheet. Further information on the handling of sodium carbonate peroxyhydrate is available from your local Solvay office.

If you require any information in the event of an emergency involving sodium carbonate peroxyhydrate please call the number shown.

Information will be provided on topics such as product identification, properties, hazards and actions to take in the event of fires, major spills etc.

CALL: 00 - 49 - 89 45 56 03 21

The phoneline will operate anywhere in eastern or western Europe and in all local languages.

Important : this is an emergency telephone line and must not be used for non-emergency calls.

  In domestic laundry, 
  industrial laundry and 
  dishwashing processes a
  bleach is normally added to
  aid the removal of
  'bleachable' stains, such as
  those associated with
  polyphenolic molecules 
                                                derived from tea, coffee, red wine, fruit juices etc. This bleaching step involves the chemical destruction of the chromophore in the stain, and also helps to remove the stain molecule from the surface by increasing the solubility of the oxidised stain molecule.

Unlike traditional bleaches which can cause damage to both dyes and fibres, and which need to be added seperately due to poor compatibility with other formulations ingredients, the use of persalt based bleach systems enable a wide range of complete formulations to be produced. The use of persalts in formulated detergent powders, in dishwash powders and tablets, and in bleach additive products present the formulator with a number of options for incorporation of an effective bleach system for washing under all conditions.

Bleaching of oxidisable stains by persalt products is enhanced by increasing temperature, the concentration of hydrogen peroxide, the length of time taken for the wash and the pH. Persalts dissolve in water to provide an alkaline solution of hydrogen peroxide, with a natural pH of 10 - 10.5, maximising the level of the perhydroxyl anion, the active species available for bleaching, and are ideal for providing a bleaching effect on a wide range of bleachable stains.

The bleach performance can be enhanced at low temperatures by the inclusion of peroxygen bleach activators into formulations. The most widely used is the activator Tetra Acetyl Ethylene Diamine (TAED), which reacts with the hydrogen peroxide present in solution to produce peracetic acid and the peracetate anion in situ.

The use of persalt products with TAED gives a rapid generation of peracetic acid over a wide temperature range, which improves the bleaching of stains at cold to medium wash temperatures (30 - 500C). A sufficient molar ratio of Persalt : TAED is required for efficient generation of peracetic acid, and to maintain bleach performance for both medium and high temperature washing.

In addition to enhancing the stain removal the presence of peracetic acid provides an enhanced biocidal activity which can reduce the level of bacteria remaining on clothes and surfaces.

   
  Detergent products are
  formulated with a range of
  materials all required to
  deliver specific cleaning
  performance. Such 
  formulations contain 
  surfactants, builders, sequestrants, perfumes, corrosion inhibitors, enzymes, optical brighteners and bleaches.The major use worldwide for solid forms of hydrogen peroxide, is as bleaching agents in domestic laundry powders.

For many years sodium perborate tetrahydrate was the standard bleaching agent in laundry detergent powders, with sodium perborate monohydrate used in markets with low washing temperatures. In recent years detergent powders have undergone many changes in formulation, with the aim of improving cleaning performance and reducing the impact of cleaning products on the environment. This has lead to the introduction of more compact detergent formulations and the introduction of detergent tablets, based on new raw material technologies.

The introduction of these new formulations has resulted in a reduction of the chemical dosages used in the wash, and to a reduction in packaging waste. The growth of these formulations has also lead to an increase in the use of sodium carbonate peroxyhydrate in fully formulated detergent products.

OXYPERR S products have a high available oxygen content and high bulk density, ideal for use in detergent powder and tablet formulations, and provide both bleach and builder functions.

Because detergent formulations vary from country to country, based on factors such as water hardness, legislation and consumer preferences, Solvay provides formulators with technical support to ensure that their persalt based formulations produce optimum performance.

  Peroxygen bleaches based on
  Solvay persalt products offer
  many  benefits to industry. Unlike 
  traditional products that require a
  separate bleach cycle, persalt
  based bleaches are used with
  detergent in the break suds cycle,
  where higher alkalinity and higher
  water temperatures enhance the
  bleaching and cleaning power.
  Eliminating the need for a 
  separate bleach cycle removes the need for subsequent rinses and an antichlor stage. This reduces processing time and thus increases throughput capacity. The economy of the commercial laundry process can be further improved with the resulting savings in chemical, water and energy costs.

While traditional bleaches can destroy dyes and finishes in some synthetic fabrics, persalt based oxygen bleaches are safely used on most washable fabrics. Also, bleaching systems based on persalts cause less fibre damage than chlorine based products, and can help to extend fabric life, reducing replacement costs.

  
  Laundry additive products 
  containing a bleaching agent
  are used in domestic
  laundering to improve stain
  removal and maintain fabric
  brightness. These products
  are generally formulated with
  persalts.
Many dry bleach products are based on OXYPER®S, sodium carbonate peroxyhydrate, due to its rapid dissolution in low temperature wash liquors, although sodium perborate products can also be used. Persalt based dry bleaches can be used as additives to the wash cycle or used for pre-soaking of stained fabrics, prior to washing.

Persalts can be used as stand alone bleaches, or formulated with other ingredients, including a bleach activator, fluorescent whitening agents and enzymes.

For medium to high temperature washing, products containing only persalts provide effective stain removal. persalt based products also give effective stain removal at cold temperatures (20oC) when used in soak and pre-soak products. In addition to the bleaching of stains, persalt based formulations will help remove odours, protect colours by the removal of chlorine from the water, and provide a bactericidal effect.

   
   A typical automatic dishwashing 
   formulation has to meet several
   basic requirements. It must
   remove soil, control foaming, 
   inhibit corrosion, and prevent
   precipitation of water hardness
   ions to reduce spotting and
   streaking. The challenge to
   formulators is to find the
   combination of ingredients that
provides good performance, whilst improving safety to the consumer and the environment.

Persalts products offer several benefits. They include good compatibility with other ingredients, the ability to reduce alkalinity, reduced glass etching and metal corrosion, and low environmental impact. The replacement of chlorinated compounds with persalts in dishwashing formulations has allowed other changes in the formulation to deliver more effective cleaning performance.

Dishwashing temperatures are high enough for good stain removal performance. If required, organic activators, such as TAED, can be added to increase the bleaching performance of persalts at lower temperatures. This can also provide an additional benefit in enhancing the bactericidal activity of the product.

The use of persalts allows formulators to use enzymes for the removal of starch and protein soils, reducing spotting and improving overall cleaning. Enzymes can also compensate for the loss of detergent efficacy when less aggressive chemicals are incorporated in the formulation. Sequestering agents can further reduce spotting by controlling water hardness and preventing protein redeposition.

In addition, persalts allow formulators to use more cost effective surfactants and perfumes due to improved compatibility between formulation ingredients.