CALCIUM CAPRATE

CAS: 13747-30-3 ANTICAKING AGENT OR FREE-FLOW AGENT, EMULSIFIER OR EMULSIFIER SALT, LUBRICANT OR RELEASE AGENT

Calcium caprate is a calcium salt of capric acid used in food formulations to improve flow, prevent clumping, and assist emulsification.

What It Is

Calcium caprate is a chemical compound formed by the calcium salt of capric acid, a saturated fatty acid with a 10‑carbon chain. It is identified by the Chemical Abstracts Service (CAS) number 13747‑30‑3, which is a unique numeric identifier assigned to chemical substances for regulatory and scientific use. The compound is also known under other names including calcium decanoate and calcium bis(caprate), reflecting its chemical structure and composition. As a member of the class of metal carboxylates, calcium caprate combines a metal ion (calcium) with the carboxylate anion derived from capric acid. In food science, it is categorized based on its technical functionality, particularly where calcium caprate may act as an anticaking agent or free‑flow agent, emulsifier or emulsifier salt, and a lubricant or release agent in various formulations. From a regulatory standpoint, calcium caprate has been evaluated and is referenced under specific provisions in the U.S. Code of Federal Regulations, indicating that it is recognized within defined food additive tolerance and usage sections. Its inclusion in regulatory inventories shows it can be used in specific food contact and formulation contexts when meeting defined specifications. The compound’s identity, structural properties, and functional roles are well established in regulatory and food science databases, although consensus on some safety endpoints and intake thresholds may vary among international expert bodies. Because calcium caprate is used to perform specific technological functions in food systems, it is typically not present in food at high concentrations. Instead, it is incorporated in controlled amounts to improve product texture, stability, and processing behavior. Its recognition by regulatory agencies under specified sections further underscores its role as a permitted additive when used according to defined regulatory criteria. However, the specific allowable use levels and conditions of use may depend on the type of food and application, and adherence to regulatory provisions is required for compliance and safety assurance.

How It Is Made

Calcium caprate is manufactured through chemical processes that combine a calcium source with capric acid or its salts. In general terms, synthesis involves reacting decanoic acid or a soluble decanoate salt (such as sodium or potassium decanoate) with a calcium salt like calcium chloride or calcium hydroxide. The reaction typically proceeds in a controlled solvent environment where the calcium ions displace the original counterions from the decanoate, forming the calcium caprate salt and releasing the displaced ions. The resulting calcium caprate precipitates out of solution due to its relative insolubility under the reaction conditions and can be filtered, washed, and dried to obtain a solid product. This method of metathesis or double‑decomposition reaction is common for preparing metal carboxylates, and reaction parameters such as solvent choice, temperature, and reagent stoichiometry are adjusted to optimize yield and product purity. Typical solvents may include alcohols like ethanol or methanol, which dissolve the reactants while facilitating the precipitation of the calcium salt. Following isolation, the wet solid is washed to remove soluble byproducts and dried under controlled conditions to achieve the desired physical form and moisture content. The end product is often a white to off‑white powder that exhibits properties consistent with carboxylate salts. Industrial production scales these principles to larger equipment, with quality control measures in place to ensure that the resulting calcium caprate meets purity and identity specifications required for food additive use. Manufacturing practices also emphasize safety, handling protocols, and documentation to align with regulatory standards. Although detailed proprietary methods may vary among producers, the fundamental chemistry reflects a combination of calcium ions with decanoate anions under controlled conditions to form the final additive used in food and related applications.

Why It Is Used In Food

Calcium caprate serves distinct technological functions in food systems that are important for product quality and processing. One of its key roles is to act as an anticaking agent or free‑flow agent. In powdered or granulated food products, ingredients can absorb moisture or interact with other components, leading to clumping or aggregation. Incorporating an anticaking agent helps maintain flowability, ensuring that powders remain free‑flowing during handling, packaging, and consumer use. This is particularly beneficial in products such as dry mixes, seasonings, and powdered beverages. Another reason calcium caprate may be used is its function as an emulsifier or emulsifier salt. Emulsifiers facilitate the mixing of oil and water phases in food; they reduce interfacial tension and help stabilize emulsions. In formulations where fat and water coexist, such as dressings, sauces, or emulsified desserts, an emulsifier can contribute to improved texture, uniformity, and shelf stability. As an emulsifier salt, calcium caprate can interact with both hydrophilic and hydrophobic components, aiding in the maintenance of a stable dispersion. Calcium caprate’s role as a lubricant or release agent further broadens its utility. In processing equipment, the additive can reduce friction and assist in the release of product from molds or surfaces, which is valuable in confectionery or molded food items. These combined functions make calcium caprate a multifunctional additive in formulations where product performance and processing efficiency are priorities. By addressing flow, stability, and handling characteristics, it supports manufacturers in achieving consistent quality and consumer appeal.

Adi Example Calculation

To illustrate how an ADI calculation works in general, consider a hypothetical substance with a stated ADI of X mg per kilogram of body weight per day. For a person weighing 70 kilograms, the daily intake consistent with the ADI would be calculated by multiplying the ADI value by body weight. For example, if the ADI were 10 mg per kilogram per day, a 70‑kilogram person’s hypothetical ADI equivalent would be 700 mg per day. Such calculations help contextualize intake levels relative to body size. It is important to note that this example is purely illustrative. For calcium caprate, no specific ADI value has been allocated by international expert evaluation, so an actual ADI calculation for this compound is not applicable. Instead, the example demonstrates how regulatory benchmarks are applied once an ADI has been established. When regulators do allocate an ADI, manufacturers and risk assessors can estimate typical exposure from food use and compare it to the ADI to ensure that combined exposure from all sources remains within safe limits. This approach supports evidence‑based decisions on formulation and labeling to protect public health.

Safety And Health Research

Safety and health research related to calcium caprate focuses on understanding how it behaves in food systems, how it is processed in the body, and what exposure levels pose minimal risk. Expert committees and regulatory agencies consider data from toxicological studies, including acute and chronic toxicity, genotoxicity, and reproductive or developmental endpoints, when evaluating food additives. For calcium caprate and related salts of fatty acids, available evaluations have historically examined whether there is evidence of adverse effects at exposure levels relevant to human consumption. International expert evaluations have considered data from studies involving similar fatty acid salts, recognizing that many such compounds are components of normal dietary lipid metabolism and are broken down into common metabolic intermediates. Because of the general similarity to other fatty acid derivatives found in food, broad safety profiles may be inferred within regulated use levels. However, formal evaluations may conclude that specific health guidance values such as an acceptable daily intake are not needed when available data indicate low toxicity at likely exposure levels. It is important to differentiate between general nutritional fatty acids present in foods and specific additive forms like calcium caprate. Additive forms are assessed not only for their metabolic fate but also for any unique effects related to the compound’s structural and physicochemical properties. Regulatory safety assessments also consider how the compound interacts with biological systems, potential for accumulation, and whether there is credible evidence of hazards at realistic exposure levels. While comprehensive primary studies dedicated to calcium caprate may be limited, its classification within a broader group of fatty acid salts allows risk assessors to draw upon mechanistic understanding and comparative data. The outcome of such research and evaluation efforts informs regulatory decisions on allowable uses and conditions within food products. Overall, the safety and health research context for calcium caprate emphasizes careful review of toxicological evidence, relevance to typical human exposure, and consideration of structurally related compounds. This approach supports risk management decisions that balance technological benefit with consumer protection, helping ensure that food additive use remains within established safety margins.

Regulatory Status Worldwide

Calcium caprate appears in the U.S. Food and Drug Administration’s inventory of substances recognized for specific functions in food, with references under sections 21 CFR 172.863 and 21 CFR 175.300 that outline conditions for its use as a food additive or in food contact applications under prescribed conditions. These regulatory citations indicate that the compound is permitted within the scope of specified technological functions when used in accordance with regulatory provisions. The regulatory inventory listing reflects that this substance has been evaluated and included in a framework that defines allowable food additive substances and conditions of use in the United States. The fact that it appears under multiple CFR sections suggests that it may be suitable for both direct additive uses and indirect food contact roles, contingent on meeting established criteria within those provisions. The listing of calcium caprate under such regulations supports compliance and safety oversight by food manufacturers. At the international level, calcium caprate has been examined by expert bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA). The JECFA database shows that it is associated with a broader class of salts of capric, caprylic, and lauric acids that have been evaluated historically. For this class, no acceptable daily intake (ADI) was allocated by the committee at the time of evaluation, and relevant specifications may have been withdrawn or reconsidered in subsequent assessments. The lack of an allocated ADI and changes in specification status reflect the evolving nature of international evaluations and the need to interpret historical data with contemporary risk assessment principles. Given these regulatory references, calcium caprate’s status in different jurisdictions may vary based on national and regional evaluations of safety and technological need. Manufacturers must refer to the latest regulatory texts and guidance in their specific markets to determine approved uses, conditions, and allowable levels. While included in U.S. Codified Federal Regulations, similar listings or evaluations by other authorities may provide parallel guidance or conditions for use in food systems.

Taste And Functional Properties

Calcium caprate generally does not contribute a pronounced taste on its own when used at typical additive levels in food products. As a salt of a fatty acid, it may exhibit subtle sensory attributes related to fatty acid derivatives, but its functional impact is primarily technical rather than sensory. Because it is used in small quantities for technological purposes, it typically does not alter the overall flavor profile of the finished food in a noticeable way. Functionally, calcium caprate exhibits properties associated with metal carboxylates. It has limited solubility in water, which can be advantageous for certain anticaking and flow applications, as it remains on particle surfaces without rapidly dissolving. Its interactions with moisture and other components can help prevent powders from sticking together, keeping them free‑flowing. When acting as an emulsifier salt, its amphiphilic nature allows it to interface between aqueous and lipid phases, promoting dispersion and stability of emulsified systems. Such behavior contributes to improved texture and consistency in products where phase mixing is critical. Calcium caprate also displays thermal and pH stability within typical food processing ranges. It can withstand moderate heat treatments without significant degradation, making it suitable for inclusion in processes such as baking, extrusion, and cooking. Its stability across a range of pH values allows its use in acidic and neutral food matrices. Because of these properties, calcium caprate supports manufacturing goals focused on product uniformity, stability under storage conditions, and resilience during processing. These functional characteristics align with its classification as a technical additive with specific performance objectives in food systems.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) is a numerical estimate of the amount of a substance that can be ingested daily over a lifetime without appreciable health risk. It is typically expressed in milligrams per kilogram of body weight per day and is derived from toxicological data using conservative safety factors. The purpose of an ADI is to provide a benchmark for regulators and manufacturers to assess whether exposure to an additive through the diet is likely to be of negligible risk to human health. For calcium caprate, international expert evaluations have historically indicated that an ADI was not allocated for this compound or the broader class of similar salts. In such cases, regulatory bodies may conclude that there is insufficient need for an ADI because available data do not suggest adverse effects at typical exposure levels, or the compound’s metabolic profile aligns with substances that are naturally present in the food supply. When no ADI is allocated, safety assessments may instead rely on other risk assessment principles and regulatory frameworks to determine acceptable conditions of use. The absence of an ADI does not imply a safety concern but rather indicates that an intake threshold was not deemed necessary based on the evidence and expert judgment at the time of evaluation. Consumers and food professionals should understand that an ADI is not a recommended intake level but a reference point used by regulators to manage exposure. Regulatory decisions regarding food additives consider multiple lines of evidence, including toxicology, exposure estimates, and technological need. In the case of calcium caprate, existing evaluations have focused on its role and safety profile as part of a class of fatty acid salts, supporting its inclusion under defined regulatory provisions for specific functions in food.

Comparison With Similar Additives

Calcium caprate can be compared with other metal salts of fatty acids that serve similar technological functions in food systems. Examples include calcium stearate, magnesium stearate, and sodium stearate. Like calcium caprate, these compounds are metal carboxylates derived from fatty acids and are often used as release agents, flow aids, or emulsifiers. Calcium stearate, derived from stearic acid, has a longer fatty acid chain and typically offers stronger hydrophobic interactions compared to the 10‑carbon chain of calcium caprate. This difference can influence properties such as melting behavior and interaction with other components in a formulation. Magnesium stearate, another related additive, is widely used as a lubricant in tablet manufacturing and powder processing. Its functionality overlaps with that of calcium caprate in terms of reducing friction and aiding flow, though the specific choice between additives depends on formulation needs and regulatory constraints. Sodium stearate, a sodium salt of stearic acid, may act as an emulsifier or surfactant in certain food systems, promoting dispersion of oil and water phases. Compared to calcium caprate, sodium stearate often exhibits different solubility and interaction characteristics due to the sodium ion and longer fatty acid chain. These comparisons highlight that while metal salts of fatty acids share common functional roles, differences in metal ion and fatty acid chain length influence their technical performance. Food formulators select specific additives based on desired effect, compatibility with other ingredients, and regulatory approvals. Understanding these distinctions helps optimize product texture, stability, and processing efficiency in diverse food applications.

Common Food Applications Narrative

Calcium caprate finds its place in a range of food applications where technological performance is essential to product quality and manufacturing efficiency. In dry food mixes, powdered drink blends, and instant beverage formulations, it helps maintain powder flow and prevents clumping that can occur due to humidity or interaction with other ingredients. This free‑flow property is particularly valuable in products designed for quick reconstitution or measured dispensing. In seasoning blends and spice mixes, calcium caprate assists in keeping particles separate and flowable, which supports ease of use by consumers and consistent seasoning distribution when shaking or sprinkling. In some emulsified products such as sauces, dressings, and certain dairy derivatives, its emulsifying function can contribute to stable dispersions of oil and water phases, helping maintain the desired texture and appearance over shelf life. Its use as a lubricant or release agent also plays a role in confectionery and molded products, where it can help reduce sticking during processing and facilitate clean release from molds or equipment surfaces. Although often used at low concentrations, calcium caprate’s combined functions support a variety of product formats where physical stability, texture, and handling are priorities. Its effectiveness in improving powder properties and supporting emulsion stability aligns with formulation goals in multiple sectors of the food industry. By enabling consistent production outcomes and helping maintain product performance from manufacturing through consumer use, calcium caprate is a valuable technical tool for formulators working with complex ingredient systems.

Safety & Regulations

FDA

  • Approved: True
  • Regulation: 21 CFR 172.863 and 21 CFR 175.300

EFSA

  • Notes: EFSA evaluation details not found in available authoritative sources

JECFA

  • Notes: JECFA evaluation indicates no ADI allocated per referenced report
  • Ins Number: 470
  • Adi Display: No ADI Allocated

Sources

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