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Sonett Organic Softener Blodgoringsmiddel (18 oz/ 500g) ( Pack of 1 ) ( Pack of 2 ) ( Pack of 4 )



  • Binds the calcium dissolved in water, thus allowing the detergent to develop its full washing performance
  • Garantees the most economical use of the laundry detergents
  • Without phosphates and petrochemical substances
  • 100% biodegradable


Special product feature


By adding the softener separately after previously having determined the amount necessary, depending on the local water hardness, the most economical use of the detergent employed is guaranteed. As is the case with the laundry detergent, we only use ingredients absolutely necessary and acceptable for the production of the softener, and abstain completely from using fillers, phosphates, and other petrochemical softening substances such as phosphonates, NTA (nitrilotriacetates) and EDTA (ethylenediaminetetraacetic acid).


Ranges of application

Component 2 in the Sonett Modular System.

Ranges of application

By adding the softener separately after previously having determined the amount necessary depending on the local water hardness, the detergent’s most economical use is guaranteed.


Laundry Powder:
from water hardness 8.4 °dH upwards


Laundry Liquid:
from water hardness 14 °dH upwards





Product declaration

Zeolith A >30%

Soda 15–30%

Citrat 5–15%


List of ingredients as per EC 648/2004

Zeolite, sodium carbonate, sodium citrate


Further information on INCI names ‣


Danger symbol



Causes serious eye irritation. If medical advice is needed, have product container or label at hand. Keep out of reach of children. Wear eye protection. If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Dispose of contents/container according to the local/national regulations.

Origin and properties of the ingredients

Zeolite A (sodium aluminium silicate), the softener’s main ingredient, is made from the raw materials sodium silicate and sodium aluminate which are easily accessible. This silicate works according to the principle of the ion exchange device, i.e. trapping the calcium and magnesium ions the cause of hard water, thus producing soft water for washing with soap detergents. Soda (sodium carbonate) manufactured from calcium and common salt, reacts chemically with the limescale in the water, thus eliminating from the washing water one of the causes of its hardness. Citrate, the salt of citric acid, obtained by fermenting sugar-containing by-products such as molasses, binds limestone particularly at low temperatures.


Technical data

Density: 20 °C approx. 0.6–0.7 g / cm³  

68 °F approx. 0.021–0.025 oz / in³


pH value: 20 °C, 5 g / l itre  H₂O

68 °F, 0.18 oz / 34 fl oz US H₂O

approx. 10–11



Zeolite A is a water-insoluble mineral, similar to sand, which is deposited in sewage sludge as a solid. Sodium carbonate, being a mineral by nature, needs no further degradation. Citric acid, an organic substance, is completely degraded into carbon dioxide and water within 2 to 3 days.

Suitable for septic tanks and filtration systems.


NCP (Nature Care Product)

CSE (Certified Sustainable Economics)

Vegan Society



500 g (18 oz) can: PP

1 kg (35 oz) cardboard package: 85% recycling material

Outer packaging: PE

5 kg (11 lb) cardboard box: 100 % recycling material

Inner bag / handle: PE