Scoralite®: High-Purity Precipitated Calcium Carbonate for Pharmaceutical, Food, and Industrial Applications

Precipitated calcium carbonate (PCC) is a synthetically produced form of calcium carbonate (CaCO₃) manufactured through a controlled chemical reaction, as opposed to ground calcium carbonate (GCC), which is produced by mechanically crushing and milling naturally occurring limestone. The precipitation process allows manufacturers to precisely control particle size, crystal shape (morphology), and purity — properties that cannot be achieved by grinding natural sources.

Calcium carbonate exists in three crystalline polymorphs: calcite, aragonite, and vaterite. The specific polymorph and particle shape produced during precipitation depend on process conditions — temperature, pH, carbonation rate, and the presence of additives. Scoralite® uses a proprietary carbonation process that consistently yields a cubic calcite morphology: a particle shape that is rare in standard PCC production and that delivers measurable performance advantages in tablet manufacturing, mouthfeel, and flowability.

Scoralite® is manufactured exclusively at the Scora production site in Caffiers, northern France — an ICL-owned facility that houses three distinct production plants: one for magnesium compounds and two dedicated to calcium carbonate. The site combines state-of-the-art production infrastructure with an in-house research unit, giving the team the capability to continuously refine the Scoralite® formulation and respond to customer-specific requirements.

Quality is Scora’s defining operational principle. The facility maintains GMP II certification for Scoralite® powder production — the standard required for pharmaceutical excipient and API manufacturing. A dedicated quality control laboratory conducts continuous testing against stringent manufacturing specifications, ensuring that every batch meets the chemical purity, morphological consistency, and elemental impurity thresholds that pharmaceutical and food clients demand.

Scoralite® DC — the directly compressible granular variant — is produced in a separate facility under GMP I conditions. The French health authorities have formally classified Scoralite® DC as a medicine, reflecting the rigor of its manufacturing standards. This classification is one of the strongest regulatory endorsements a pharmaceutical excipient can receive and is a direct reflection of ICL’s commitment to pharmaceutical calcium solutions of the highest standard.

Scoralite® powder is produced using a proprietary precipitation technique that yields a distinctive cubic crystal morphology. This cubic shape is not cosmetic — it has direct, measurable consequences for how the material behaves in tablet manufacturing and in the consumer experience of finished products.

Superior Mouthfeel and Reduced Chalkiness

Tablets containing standard calcium carbonate are frequently described by consumers as chalky — a textural experience driven by the irregular, abrasive particle shapes of ground calcium carbonate. Scoralite’s cubic particles produce a smoother, less abrasive sensation during chewing and dissolve more rapidly in mouth saliva. Clinical and sensory evaluations consistently show that chewable tablets made with Scoralite® powder produce better mouthfeel, less chalkiness, and faster dissolution than those made with standard GCC.

Exceptional Whiteness and Low Lead Content

Whiteness is a critical quality parameter for pharmaceutical tablets, cosmetic formulations, and food products. Scoralite’s controlled synthesis process produces a high-brightness white powder with minimal impurities that would cause discoloration. The extremely low lead content — part of the broader ultra-low heavy metal profile — is particularly valued by pharmaceutical manufacturers for whom USP and EP pharmacopoeia compliance is mandatory.

ICH Q3D Elemental Impurity Compliance

ICH Q3D is the International Council for Harmonisation guideline governing elemental impurities in pharmaceutical products — covering 24 elements including lead (Pb), mercury (Hg), arsenic (As), cadmium (Cd), iron (Fe), and aluminium (Al). Scoralite® is produced with extremely low levels of all regulated heavy metals and is fully compliant with ICH Q3D. For pharmaceutical manufacturers integrating Scoralite® as an API or excipient, this compliance eliminates a significant component of the elemental impurity risk assessment and simplifies regulatory submissions.

Smaller Tablet Size

The cubic morphology of Scoralite® particles allows for higher packing efficiency and better compressibility in tablet matrices. This means manufacturers can produce tablets with equivalent calcium content at a smaller physical size — an important benefit for patient compliance, particularly in elderly populations and children, who find large chewable calcium tablets difficult to consume.

In addition to the powder grade, ICL produces Scoralite® in granulated form under the Scoralite® DC product line. Granulation is achieved using fluidized bed technology to create agglomerated particles, which are then compounded with binders including pre-gelatinized starch, maltodextrin, PVP (povidone), and acacia gum.

The granulation process converts the calcium carbonate into directly compressible grades — materials that can be fed directly into tablet presses without requiring wet granulation steps. This significantly simplifies the manufacturing process for pharmaceutical clients, reducing production time, equipment requirements, and potential contamination risk.

Scoralite® DC inherits all the chemical purity advantages of the base powder, while additionally delivering enhanced flowability, improved compressibility, and — critically — the same superior taste and mouthfeel properties that distinguish Scoralite® from standard calcium carbonate excipients. The Scoralite® DC facility operates under GMP I standards, and the product carries formal classification as a medicine under French law.

Scoralite® serves four primary markets, each with distinct requirements that the product’s unique combination of purity, morphology, and regulatory compliance is uniquely positioned to meet.

Pharmaceutical: API for Osteoporosis and Excipient for Tablet Manufacturing

Scoralite® is approved for use as an active pharmaceutical ingredient (API) for the prophylactic and therapeutic treatment of osteoporosis — a bone-loss condition affecting an estimated 200 million people globally. As a calcium carbonate API, it delivers elemental calcium in a highly biocompatible form with exceptional purity and consistency. Beyond the osteoporosis indication, Scoralite® functions as a pharmaceutical excipient: a binder, filler, and flow agent in tablet compression; a pH control agent; and a calcium supplement in numerous oral dosage forms. Its ICH Q3D compliance and GMP II certification make it one of the most regulatory-ready calcium carbonate products available to pharma manufacturers globally. For full technical specifications, download the Scoralite® product datasheet.

Food: Calcium Fortification, Anti-Caking, and TiO₂ Replacement

Scoralite® holds FSSC 22000 certification — the leading food safety system standard — and is widely used across the food industry in multiple functional roles. As a calcium source (E170), it fortifies infant formula, dairy products, plant-based beverages, and baked goods, helping manufacturers address dietary calcium deficiencies in their target consumer populations. As an anti-caking agent, it improves the flowability of powdered food products. Scoralite® also serves as a white pigment alternative to titanium dioxide (TiO₂) in food applications where regulatory pressure on TiO₂ use is increasing — particularly in Europe following EFSA’s 2021 suspension of TiO₂’s food additive authorization.

Nutraceuticals: Calcium Supplements and Salt Manufacturing

In the nutraceutical sector, Scoralite® is used both as a direct calcium supplement ingredient and as the base material for manufacturing calcium salts — including calcium citrate, calcium ascorbate, and calcium lactate — which are used in dietary supplements and functional food products. The ultra-low heavy metal profile and consistent particle properties make Scoralite® a preferred source material for contract manufacturers serving premium supplement brands. The Scora facility also produces magnesium compounds, reflecting ICL’s full range of ICL magnesium and calcium compounds for health applications.

Industrial and Optical Applications

Scoralite’s extremely low heavy metal content makes it suitable for optical glass production, where trace metallic contamination causes light absorption and clarity defects. It is also used in specialty coatings, sealants, and high-end technical applications where standard calcium carbonate grades cannot meet purity or morphology requirements. The Scora facility’s multi-mineral production expertise — including its magnesium compounds line — is also the foundation for ICL magnesium innovations at Scora, including the TextiMag™ textile odor control technology.

Regulatory compliance is the foundation of Scoralite’s commercial value proposition. The following table summarizes the key standards and certifications applicable to the Scoralite® product line:

The calcium carbonate market offers many options. Scoralite® stands apart through a combination of factors that no standard GCC product can replicate: a proprietary cubic morphology that improves tablet performance; ultra-low heavy metal levels that exceed ICH Q3D requirements; dual GMP certifications (GMP II powder, GMP I DC) validated by French medicine classification; and an FSSC 22000-certified food production environment that supports multi-industry supply from a single trusted source.

For pharmaceutical, nutraceutical, food, and industrial manufacturers seeking a high-purity calcium carbonate supplier that combines regulatory excellence with performance differentiation, Scoralite® by ICL represents the most complete solution currently available. Contact ICL Industrial Products to request a technical data sheet, product sample, or consultation with the Scora team.