Limestone Powder (GCC)

Limestone Powder (GCC) from Pakistan

Ground calcium carbonate (GCC) is a fine, crystalline white powder made by milling high-purity limestone. It serves as a functional filler and extender across numerous industries, providing opacity, brightness, impact strength, rheology control, and cost optimization. Pakistan has abundant high-calcium limestone reserves ideal for GCC production.

Key Properties

• Calcium Carbonate (CaCO₃): 96-99%

• Brightness: 94-97%

• Whiteness: 92-95%

• Oil Absorption: 12-17 g/100g

• pH: 8.5-9.5

• Specific Gravity: 2.6-2.8

Available Grades

• Coarse: 35 mesh (0.5 mm), 50 mesh (0.3 mm)

• Fine: 100 mesh (150 μm), 200 mesh (75 μm), 325 mesh (45 μm)

• Superfine: 400 mesh (37 μm), 600 mesh (25 μm), 800 mesh (18 μm)

• Micronized: 10 μm, 5 μm, 3 μm, 2 μm

• Custom grinds and narrow size ranges available

Applications

Paints and coatings, plastics and rubber, adhesives and sealants, paper and board, pharmaceuticals and nutraceuticals, cosmetics and personal care, ceramics and glass, animal feed, and other specialty applications.

Quality Assurance

Each lot includes a Certificate of Analysis reporting CaCO₃ purity, particle size distribution, brightness, whiteness, pH, and other key properties. Pre-shipment samples are provided for approval. Independent lab testing and on-site inspection can be arranged.