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BYK® -W 9012

Technical DataSheet | Supplied by Byk (Altana Group)

BYK® -W 9012 by BYK (Altana Group) is a mixture of poly(oxy-1,2-ethanediyl), a-methyl w-phosphate and phosphoric acid. Acts as a solvent-free wetting and dispersing agent. It reduces the compound viscosity which makes it possible to have a higher filler content in the resin. Offers improvement in the homogeneity and batch reproducibility of aluminium trihydroxide (ATH)-filled compounds. It is completely soluble in water. Suitable for closed mold applications. Recommended for low emission sheet molding composites & blow molding composites (SMC/BMC), LS formulations, epoxy systems and pultrusion. It is listed in TSCA, EINECS, ENCS, TCSI and PICCS. Complies with REACH (1907/2006), RoHS (2002/95/EC), WEEE (2002/96/EC), CONEG and RoHS 2 (2011/65/EC). Typical level of BYK® -W 9012 by BYK (Altana Group) ranges from 0.5-1% (as supplied) based on the total formulation.

BYK® -W 9012 Product details

Product Type
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Chemical Composition
Physical Form
Product Status
Applications/ Recommended for
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Labels/Agency Rating

BYK® -W 9012 Properties


Value & Unit
Test Condition
Test Method
Density @ 20°C
xxxx g/ml
Flash point
xxxxx °C
Surface tension, Dynometer (Ringmethode)
xxxx mN/m
Acid value
xxx mg KOH/g

Solubility Properties

Test Condition
Test Method
Completely soluble in
Last edited Nov 16, 2017
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