Hesse Bleaching agent BW 804

  • extra-strong bleaching agent
  • intensely brightening
  • to thin with water
A chemical stain on a hydrogen peroxide base with an extra strong bleaching effect.
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  • Description
  • Information on use
  • Sample process
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Fields of application

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Technical specifications

Appearance not relevant
Density series kg/l 1.18
Flow time (+/- 15 %) 60 s / DIN EN ISO 2431 - 3 mm
Form of delivery fluid
VOC EU % 0 %
Number of coats (max) 3
Amount per layer (minimum) 40 g/m²
Amount per layer (max) 100 g/m²
Total application volume 300 g/m²
Mixing ratio (by volume) 100 : 5 Bleaching activator BA 811
Mixing ratio (gravimetric) 100 : 5 Bleaching activator BA 811

Information on use

Drying 48 h / 20 °C
Surface preparation The wood must be dry, dust-free and grease-free.
Substrate sanding grits from-to 120 - 180
Finishing After sufficient drying of the bleaching agent for at least 48 h / 20 °C a subsequent coat of matching PU lacquers permitted for use on bleached woods can be applied, such as DG 4717-0004, DG 4741-0001, DG 4716, DE 4259x(gloss level), etc. In the case of exotic woods and cherry, only apply the next coat after 72 h drying.
Yield per coat 12 - 30 m²/l

The spreading rate is heavily dependent on the type of application. The specifications relate to a liter of ready-for-use product, if necessary including hardener and thinner.
Working Temperature Range 16 - 25 °C
Storage temperature 5 - 30 °C
Working temperature 20 °C
conditions of transport frost-free - up to a maximum of 35 °C
Processing instructions An activator must be added to the bleaching agent prior to application: 5% (grav.) BA 811.
Apply activated bleaching agent richly on wood with synthetic sponge or brush with synthetic bristles. Remove excess with wrung up sponge. Due to the intense roughening of the wood by the bleaching process, the bleached surface should be re-sanded with a sanding sponge, grit size 150. Under-dosing of activator or use of another activator type may cause surface blemishes. By contaminations such as wood dust, lacquer mist, etc., the pot life is shortened significantly. Initiating, clearly visible appearance of gas bubbles indicates the early end of usability.
Particular instructions Lighten by adding: water. To maintain the structure of certain kinds of wood, e.g. of walnut and cherry, we recommend bleaching with diluted bleaching agent. Mixture 1 part bleaching agent : 2 parts water. Add activator only after dilution.
General instructions on workmanship Please ask for our separate Technical Information on this topic. Protective equipment: rubber apron, rubber gloves and eye protection!

Material Safety Data Sheets


Our technical information is continually adapted to keep up to date with the latest technology and statutory regulations. The latest version is always available online at www.hesse-lignal.de or talk to your local account manager. This information is for advice and is based on the best knowledge available and careful research in line with the current state of the art. This information cannot be held as legally binding. We also refer you to our terms and conditions of business. Safety data sheet is provided in accordance with EC regulation no. 1907/2006.