Sonett Laundry Powder 2,4kg

By Sonett

In stock | Ordered before 22:00 on workdays, delivered tomorrow

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Washing powder for all colored and white clothes made of cotton, linen, hemp and mixed fibers from 40° - 95°C. The first part of the Sonett three-part modular system.
1.2 kg of Sonett washing powder is sufficient to wash 83 kg of dry laundry.
Not suitable for wool and silk. For these delicate fabrics, we recommend SONETT liquid detergent for wool and silk.

It is the Sonett Modular System with its separate dosage of the 3 main components of the detergent, namely:
  1. Detergent
  2. Softener
  3. Bleach Complex and Stain Remover (for white clothes)

which really enables the optimal use of the individual substances, depending on the laundry’s degree of soiling, the water hardness and your individual wish for whiteness. For a soap-based detergent, soft water is an absolute precondition. Thanks to the modular principle, the basis is thus provided for making use of the unsurpassed advantages of soap even when hard water conditions prevail.

We abstain from using anticaking agents, fillers, optical brighteners, phosphates, and enzymes.  

Dosing for 4.5 kg of laundry: (a measuring cup is included in the box)
soft water: 50-90ml
medium hard water: 90ml + 40ml SONETT water softener
hard water: 90ml + 70ml SONETT water softener

Origin and properties of the ingredients
The main active ingredient of the Sonett Laundry Powder is soap, manufactured from various plant-based oils – such as palm oil, rape seed, sunflower and coconut oil – by simmering them with alkaline solution. The oils originate 100% from organic or biodynamic cultivation. Soap as an active washing substance uniquely amalgamates all of the properties required for the washing process–the moistening, dissolving, and absorbing of dirt. Sodium carbonate is a result of calcium reacting chemically with common salt. Metasilicate is obtained by melting quartz sand and sodium carbonate to form a compound. Sodium carbonate and metasilicate both intensify the washing lye, thanks to their alkalinity, and promote the removal of fatty substances in particular. Both zeolite A and phyllosilicate have silicate rock as their basic raw material. In addition to their property of binding lime in water, these substances also simultaneously bind the organic substances and colour pigments dissolved in the suds and prevent them from being deposited on the laundry. Fatty alcohol sulphate, derived from coconut oil, intensifies the soap’s fat-dissolving property.


Soap made from vegetable oils has one outstanding feature compared to all other active washing substances, namely that, right after its use, it loses its surface active properties immediately on chemically reacting with the calcium that is always present in waste water, and neutralises its effect on live organisms (primary degradation).
The calcium soap thus formed is then 100% micro-organically degraded into carbon dioxide and water (secondary degradation).
Coconut oil alcohol sulphate made from natural, renewable raw materials, during manufacturing remains intact in its internal molecular structure. Therefore, it is easily detected and degraded by microorganisms in the waste water, thus being reintegrated into the natural cycle rapidly and completely.
The remaining constituents of the detergent – sodium carbonate, clay minerals, and silicates – are mineral substances which need no further degradation in nature. Soap and coconut oil alcohol sulphate are classified as being readily biodegradable according to OECD guidelines.

Suitable for septic tanks and filtration systems.

The NCP Label (Nature Care Product) certifies.

Suggested use

Ranges of application

Suitable for all coloured and white textiles made from cotton, linen, hemp and fabric blends of between 40 and 95 °C (100–200 °F).

Suitable for HE washing machines.

Application / Dosage
Unsuitable for wool, silk, and micro-fibres. For those, we recommend to use our Sonett Olive Laundry Liquid for Wool and Silk.

Add Softener into the detergent compartment of the washing machine. Fill Laundry Detergent into a measuring ball and put it straight into the drum.

soft water: 50-90ml
medium hard water: 90ml + 40ml SONETT water softener
hard water: 90ml + 70ml SONETT water softener


List of ingredients as per EC 648/2004
Sodium soap*, sodium carbonate, bentonite, zeolite, sodium C12–C14 fatty alcohol sulphate (sodium lauryl sulfate), sodium silicate, sodium metasilicate, sodium disilicate

*certified organically grown

  • 2,4kg
Shipping & Returns

Orders placed on business days before 22:00 we aim to ship the same day. However, we do not always succeed. Sometimes products are out of stock and your order may take a little longer to arrive.

Free shipping for orders over € 49 within NL and BE.

You have the right to cancel your order up to 30 days after receipt without giving any reason, provided the seal has not been broken. If the seal is broken, your order is final and cannot be returned. If you make use of your right of withdrawal, you have another 14 days after cancellation to return your product. You will then be credited the full order amount including shipping costs.

Read more in our FAQs page.

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Non-toxic household care is an approach to maintaining a clean and healthy living environment without relying on products that contain harmful chemicals. It involves choosing cleaning supplies and other household essentials made from natural, safe ingredients that pose no risk to human health or the environment. By embracing non-toxic solutions, individuals can create a home that supports the well-being of their family while minimizing their ecological footprint.

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