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Ulmer Weiss WL is a fine calcium carbonate powder with a yellow index of 5.2 that is designed for use as a filler, pigment, or mixing agent in manufacturing processes. Common applications of this product include paper, paperboard, paints, varnishes, coatings, printing inks, mastics, soaps, detergents, rubber, and polishing mixtures. Ulmer Weiss WL is a solid powder in appearance with a characteristic odor.

Functions: Colorant, Filler

Chemical Family: Aluminum Compounds, Calcium Salts, Carbonates, Magnesium & Magnesium Compounds

Pigment Type: Inorganic Pigments

Color: White

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Knowde Enhanced TDS

Identification & Functionality

Chemical Name
Pigment Type
CASE Ingredients Functions
CAS No.
471-34-1
EC No.
207-439-9

Applications & Uses

Compatible Substrates & Surfaces
Cure Method

Properties

Color
Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
CaC0399,2%
MgCO30,4%
Fe20335%
Al2030,1%
Si02 (Silicates)0,25%
Volatile Matter at 105°Cmax. 0,2%DIN EN ISO 787-2
Loss on Ignition43,8DIN EN 459-2
HC1-insoluble0,3%DIN 55 918
Loose Bulk Density0,75g/cm3
Packed Bulk Density1,4g/cm3DIN EN ISO 787-11
Oil Absorbtion16g/100gDIN EN ISO 787-5
DOP Absorption27g/100gDIN EN ISO 787-5
Electrical Conductivity (10%)46pS/cmDIN EN ISO 787-14
pH Value9.6DIN EN ISO 7879
Density2,7g/cm3DIN EN ISO 787-10
Hardness (Mohs)3
Refractive Index1,59
Percentage of particles finer than 40 µm99,9%DIN 53 734
Optical Properties
ValueUnitsTest Method / Conditions
Brightness88C/2°, DIN 53 163
Yellow Index5,2DIN 6167
CIELAB-Colour values L95DIN 6174
CIELAB-Colour values a0,2
CIELAB-Colour values b2,9
Particle Size Distribution
ValueUnitsTest Method / Conditions
Percentage of particles finer than 24 µm98,1%Laser-Granulometer
Percentage of particles finer than 16 µm91%Laser-Granulometer
Percentage of particles finer than 8 µm72%Laser-Granulometer
Percentage of particles finer than 4 µm46%Laser-Granulometer
Percentage of particles finer than 2 µm25%Laser-Granulometer

Technical Details & Test Data

Particle Size Distribution

Particle size distribution curve of ULMER WEISS WL (Laser-Granulometer Sympatec Helos R3)

Ulmer Weiss WL - Particle Size Distribution