Omya Optical® - FL is a high-purity, fine natural calcium carbonate powder, primarily used in the activated sludge process for municipal and industrial wastewater treatment. It functions as a pH stabilizer, pigment, and filler, improving dewatering and promoting faster sedimentation. This white powder is compliant with several regulatory standards, including ISO 9001, ISO 14001, and ISO 45001, as well as the Clean Water Act (CWA) and Clean Air Act (CAA). It is certified under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA).

Chemical Family: Calcium Salts, Carbonates

Applicable Processes: Industrial Wastewater Treatment, Municipal Wastewater Treatment, Neutralization, Wastewater Neutralization

Features: Faster Sedimentation, High Alkali Stability, Improved Dewatering, Reduced Bulking, pH Stabilizing

Enhanced TDS

Identification & Functionality

Features & Benefits

Applications & Uses

Applicable Processes
Main Applications
  • Neutralization of acidity and stabilization of pH within the activated sludge treatment process.
  • Improved formation of bio-flocs in activated sludge.
  • Reduced bulking and better sedimentation before decantation.
  • Improved dewatering of sludge from municipal wastewater treatment.
  • Improved alkalinity control.

Properties

Color (Properties)
Physical Form
SDS Physical and Chemical Properties
ValueUnitsTest Method / Conditions
Minimum Ignition Energy (at 20°C, 1013 hPa)min. 1,000mJ-
Explosive PropertiesNot Explosive--
Decomposition Temperaturemin. 600°C-
Solubility in Water (at 20°C, 1013 hPa)0.014g/l-
Density (at 20°C, 1013 hPa)2.3 - 2.8g/ccDIN-ISO 787/10
Burning Number1--
Flammability (Solid, Gas)The product is not flammable--
Flash PointDoes not flash--
Boiling PointDecomposes below the boiling point--
Melting Point (at 1013 hPa, Decomposes below the melting point)min. 800°C-
pH Value (at 20°C, 100 g/l Concentration)8.5 - 9.5-DIN-ISO 787/9
OdorCharacteristic--
AppearanceWhite powder--
Chemical Analysis
ValueUnitsTest Method / Conditions
Total Carbonate Content99%-
Specifications
ValueUnitsTest Method / Conditions
Specific Gravity2.71--
Apparent Bulk Density (packed)72Ib/ft³Omya GLS 002
Apparent Bulk Density (loose)28Ib/ft³Omya GLS 001
Median Particle Size (sedigraph, d50%)3.2μmOmya GLS 041

Regulatory & Compliance

Packaging & Availability

Packaging and Stability Information

Bulk, Supersacks and 50lb bags