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Blockx Soft Pastels are handmade in Belgium using pure pigments in the same tradition started by company founder and chemist Jacques Blockx in 1844. Pastels are soft and velvety in texture. Best-suited for use on pastel paper.
Color Swatches created using heavy to light application and were applied on 100 lb (163 gsm) drawing paper material.
bismuth orthovanadate or bismuth vanadium oxide
Bismuth Yellow is an intense, light value, semi-opaque yellow pigment with good tinting strength.
Bismuth Yellow has excellent lightfastness.
Bismuth orthovanadate is harmful if swallowed. It is irritating to the eyes, respiratory system, and skin. Exposure may cause conjunctivitis, rhinitis, and reversible irritation of the respiratory tract. More severe cases may cause bronchitis, bronchospasms, and asthma like disease. It may cause polycythemia, red blood cell destruction and anemia, albuminuria and hematuria, gastrointestinal disorders, nervous complaints, and severe cough. However, bismuth vanadium oxide is completely insoluble in water. This limits absorption and biological activity. In waterbased paints, it must be suspended in a binder vehicle. Because of low absorption, such clinical symptons are primarily limited to cases of long-term occupational exposure.
Bismuth orthovanadate occurs naturally in several minerals. Although it was synthesized in the 1920s, it was not developed as a commercial pigment until the 1970s.
Permanent Lemon Yellow, Vanadium Yellow.
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CA Prop 65
Material Safety Data Sheet
® Blockx is a registered trademark.
Dick Blick Art Materials®, Blick®, Blick Studio®, and Artists Pick Blick® are registered trademarks of Dick Blick Holdings Inc.
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