DISODIUM CYANODITHIOIMIDOCARBONATE

CAS: 138-93-2 ANTIMICROBIAL AGENT, FLAVORING AGENT OR ADJUVANT

Disodium cyanodithioimidocarbonate is a synthetic dithiocarbamate‑type antimicrobial agent used as a microorganism control agent and as a component in certain food contact materials under specific regulatory conditions.

What It Is

Disodium cyanodithioimidocarbonate is a synthetic chemical compound identified by the Chemical Abstracts Service with the registry number 138‑93‑2, belonging to the class of dithiocarbamate salts. It is composed of sodium, nitrogen, carbon, and sulfur atoms bound in a structure that confers activity against a broad spectrum of microorganisms. Its other recognized names include carbamodithioic acid, cyano‑, disodium salt and disodium cyanocarba modithioate, reflecting its chemical relationships and historical naming conventions. The presence of multiple synonyms highlights the compound’s use in industrial and regulatory documentation. Disodium cyanodithioimidocarbonate is not a naturally occurring substance; rather, it is manufactured by chemical synthesis methods that produce the disodium salt form of the cyanodithioimidocarbonate moiety. In regulatory inventories, particularly those maintained by the U.S. Food and Drug Administration (FDA) for food contact substances, it appears under indirect additive regulations with associated sections such as 21 CFR 173.320, 175.105, 176.300, 178.3120, and 181.30, indicating specific permitted uses as a processing aid or as a component of packaging materials under defined conditions of use. These regulatory citations reflect the contexts in which the compound may be encountered in the food industry, specifically as a processing antimicrobial and a component in adhesives and coatings that can contact food. The compound’s antimicrobial properties derive from its chemical structure, which interacts with microbial cells to limit growth or survival under controlled conditions. In industrial settings, it has been used to control microbial slime and biofilm formation in processing systems, where microorganisms can adversely affect product quality and equipment performance. Although it has antimicrobial functionality, disodium cyanodithioimidocarbonate is subject to regulatory specifications that determine how and where it can be applied in food processing or contact materials rather than being a direct ingredient in finished foods.

How It Is Made

Disodium cyanodithioimidocarbonate is produced through synthetic chemical reactions involving precursor compounds that provide the cyanide, dithio, and imidocarbonate groups. Specific manufacturing routes are proprietary to chemical producers, but generally involve controlled reactions between carbon disulfide derivatives and cyanamide or related compounds under basic conditions, followed by neutralization with sodium salts to form the disodium salt. These processes occur in industrial chemical facilities equipped to handle reactive and potentially hazardous intermediates. Laboratories and chemical manufacturers adopt controlled conditions, including temperature regulation, agitation, and pH monitoring, to achieve consistent product quality and to minimize byproduct formation. The manufacturing of disodium cyanodithioimidocarbonate must conform to safety and environmental standards, as the intermediates and final product can pose hazards if not properly contained. For example, thiocarbamate and dithiocarbamate chemistries can generate flammable gases when mixed with incompatible substances such as aldehydes or hydrides, requiring careful management of reaction conditions and storage environments. In addition, industrial synthesis processes typically incorporate purification steps such as crystallization, washing, and filtration to remove unreacted precursors and to achieve the desired purity level for regulatory compliance in permitted applications. Because this compound is used in highly specific industrial applications, detailed commercial production protocols are typically not published in the open scientific literature. Instead, producers provide safety data sheets and technical specifications to customers that describe handling precautions, physical properties, and stability profiles. In regulatory filings for food contact use, companies must demonstrate that the purified disodium cyanodithioimidocarbonate meets defined identity and purity criteria appropriate for its intended application. These criteria can include limits on impurities, moisture content, and physical characteristics appropriate for blending into processing formulations or incorporation into adhesives and coatings.

Why It Is Used In Food

Disodium cyanodithioimidocarbonate is used in food processing and food contact materials primarily for its antimicrobial properties and its ability to control microbial growth in environments where sanitation is critical. In sugar cane and beet sugar mills, for example, microbial slime can accumulate in equipment and pipelines, compromising processing efficiency and product quality. Adding controlled amounts of antimicrobial agents like disodium cyanodithioimidocarbonate to processing water helps limit the development of bacterial and fungal biofilms that can adhere to surfaces and impair operations. In addition to its direct application in process water, disodium cyanodithioimidocarbonate can serve as a constituent of adhesives and coatings used in food packaging materials. When incorporated into adhesives under specified regulatory conditions, it contributes to the functional performance of the material while limiting microbial contamination on surfaces that may contact dry food. Similarly, it can be included in coatings for paper and paperboard intended to contact food, where it acts as a slimicide that helps maintain the integrity and cleanliness of packaging substrates. The use of this compound in food‑related applications is governed by regulatory provisions that specify how it may be applied and under what conditions to ensure that food safety and quality are not compromised. Its inclusion in indirect food additive regulations reflects a balance between technological need — controlling spoilage organisms and maintaining hygienic processing environments — and safety considerations that limit direct exposure to consumers. By restricting its use to specific processing and food contact applications, regulatory frameworks seek to derive the functional benefits of disodium cyanodithioimidocarbonate while minimizing unnecessary exposure in finished products.

Adi Example Calculation

Because no specific acceptable daily intake (ADI) value has been established for disodium cyanodithioimidocarbonate in the context of general dietary exposure, an illustrative calculation can demonstrate how ADIs are typically used rather than provide a numeric estimate for this compound. For a substance with an established ADI, the amount of exposure considered safe is expressed relative to body weight. For example, if an ADI were set at X mg per kilogram of body weight per day, a person weighing 60 kilograms would have an illustrative safe exposure threshold of 60 times X mg per day. This hypothetical calculation shows how regulators translate an ADI into a personalized context based on body mass. In the case of disodium cyanodithioimidocarbonate, regulatory oversight emphasizes limiting migration and exposure to negligible levels based on the specific conditions of use rather than establishing a broad ADI. Therefore, while the structure of an ADI calculation is illustrative, it does not yield a numeric exposure threshold for this compound. Instead, regulatory conditions ensure that any exposure from permitted uses remains minimal and well below levels that would raise safety concerns based on toxicological evidence and migration testing.

Safety And Health Research

Safety evaluations for disodium cyanodithioimidocarbonate focus on its toxicological profile, exposure potential, and the conditions under which humans might come into contact with residues. Regulatory assessments consider endpoints such as acute toxicity, irritation potential, and the likelihood that residues could migrate into food at levels of concern when used in processing systems or food contact materials. Data from industrial safety sources indicate that the compound can be hazardous if misused or improperly handled in laboratory or production settings, with potential for irritation and other effects in high‑dose exposures. However, these findings pertain to occupational and laboratory risks rather than consumer dietary exposure. In regulatory filings for food contact substances, manufacturers are typically required to provide data demonstrating that any migration of the additive or its breakdown products into food will be negligible and within safe limits consistent with established safety principles. Studies used to support these assessments may include chemical characterization, migration testing under simulated use conditions, and analyses of byproducts. Because disodium cyanodithioimidocarbonate is permitted in specific applications with defined conditions of use, exposure assessments are narrowly tailored to those uses rather than broad dietary exposure across multiple food categories. Researchers and regulatory scientists also examine the environmental fate of the compound, particularly in industrial effluents. In aqueous environments, dithiocarbamate compounds can degrade to simpler sulfur‑containing products and require management to prevent environmental release. Safety and health research in this context informs wastewater handling procedures and effluent treatment requirements to protect ecological systems. Together, these lines of research form the basis for regulatory decisions and guidance on safe handling, permissible use, and exposure mitigation within the narrow contexts where disodium cyanodithioimidocarbonate may be encountered in food processing and contact materials.

Regulatory Status Worldwide

In the United States, disodium cyanodithioimidocarbonate is recognized in the FDA’s Inventory of Food Contact Substances Listed in 21 CFR, which indicates that it may be used in defined indirect food additive applications when used under the conditions specified in referenced sections of the Code of Federal Regulations. The listed regulation codes include 21 CFR 173.320 for controlling microorganisms in sugar processing, 21 CFR 175.105 for components of adhesives, 21 CFR 176.300 for paper and paperboard components, 21 CFR 178.3120 for certain adjuvants and production aids, and 21 CFR 181.30 for specific prior‑sanctioned food ingredient uses in packaging materials. These sections collectively describe contexts in which the compound can be incorporated into materials that contact food, with the stipulation that such uses are consistent with good manufacturing practice and do not result in unsafe residues. Outside the United States, regulatory frameworks vary. In the European Union, indirect food additives and processing aids are regulated under specific directives and regulations that establish lists of permitted substances and conditions of use. At present, no widely recognized European Food Safety Authority (EFSA) opinion or Union list entry specifically authorizes disodium cyanodithioimidocarbonate for food contact or processing applications in the EU, reflecting differences in regulatory approaches and permitted substances. Absence of specific authorization in one jurisdiction does not imply prohibition, but rather that authorization may not have been sought or granted. Global bodies such as the World Health Organization (WHO) and the Food and Agriculture Organization (FAO) maintain databases of food additives evaluated for safety and usage, but disodium cyanodithioimidocarbonate is not prominently featured in these listings with an established acceptable daily intake or widespread international consensus on use. As with many specialized technical additives, its regulatory status is highly context‑dependent and tied to specific permitted applications rather than general food additive use across categories.

Taste And Functional Properties

Disodium cyanodithioimidocarbonate itself does not contribute desirable taste characteristics to food products and is not used as a direct flavoring ingredient. Its functional role is technical: limiting the presence and growth of microorganisms in processing systems and materials that contact food. Consequently, sensory effects on taste are generally absent or negligible when the compound is used in accordance with regulatory permissions, as its purpose is not to impact flavor but to maintain hygienic conditions. As a technical antimicrobial, its activity depends on its chemical stability in solution and its ability to interact with microbial cells under the conditions of use. In aqueous processing environments, the compound can exhibit solubility that enables it to disperse effectively and exert inhibitory effects on slime‑forming bacteria and fungi. Its stability under processing conditions, including variations in pH and temperature commonly encountered in industrial operations, contributes to its utility in settings such as sugar mills and water treatment systems. When incorporated into adhesives or coatings for packaging, the compound is generally bound within the material matrix, where it serves as a slimicide or anti‑microbial control agent without migrating significantly into food. Functional performance in these contexts depends on the formulation of the base adhesive or coating and the regulatory conditions that define acceptable use. Because sensory properties such as taste, aroma, and mouthfeel are critical considerations in finished foods, additives like disodium cyanodithioimidocarbonate that serve non‑sensory roles are evaluated for their minimal impact on organoleptic properties when used appropriately.

Acceptable Daily Intake Explained

An acceptable daily intake (ADI) is a regulatory concept used to describe the amount of a substance that can be consumed daily over a lifetime without appreciable health risk, based on toxicological data and safety factors. For many common food additives, regulatory bodies such as the Joint FAO/WHO Expert Committee on Food Additives (JECFA) or EFSA establish numerical ADIs expressed in milligrams per kilogram of body weight per day. These values help guide permissible use levels and exposure assessments. At present, there is no widely recognized numerical ADI established by JECFA or EFSA specifically for disodium cyanodithioimidocarbonate for general dietary exposure, largely because its use is limited to specific processing and food contact scenarios rather than as a direct ingredient in foods. As such, regulatory authorities focus on ensuring that any migration into food from contact materials or processing aids remains so low that consumer exposure is minimal and not a concern. In the context of indirect food additives, conditions of use and good manufacturing practice serve as proxies for controlling exposure. Although a formal ADI number is not available for this compound, consumers and practitioners can understand that indirect additives are evaluated with an emphasis on minimizing exposure. Regulators require data showing that migration into food will be minimal and that any residues are substantially lower than levels associated with adverse effects in toxicological studies. By framing exposure control through stringent use conditions and safety assessments, regulatory frameworks aim to maintain consumer safety without the need for a specific ADI for every technical substance used in processing.

Comparison With Similar Additives

Disodium cyanodithioimidocarbonate shares functional similarities with other antimicrobial agents used in food processing and food contact applications, although its specific chemical class and regulatory context set it apart. For example, ethyl lauroyl arginate is another antimicrobial compound evaluated and authorized for use in certain food categories and packaging contexts in some jurisdictions, with specific permitted levels and regulatory opinions established. In contrast, disodium cyanodithioimidocarbonate’s use is narrowly defined in process water systems and indirect food contact materials rather than broad inclusion in multiple food categories. Other antimicrobials such as sorbic acid and its salts serve as preservatives in a range of food products due to their efficacy in inhibiting yeasts and molds, with established acceptable daily intake values and wide regulatory acceptance. Sorbates function directly within food matrices to extend shelf life, whereas disodium cyanodithioimidocarbonate is not used for shelf life extension in finished products but rather for microbial control in processing environments. Silver‑based antimicrobial coatings represent another class of antimicrobial agents used in some packaging materials. These coatings rely on controlled release of ionic silver to inhibit microbial growth on surfaces. Like disodium cyanodithioimidocarbonate, their regulatory acceptance depends on conditions of use and safety assessments that ensure minimal migration. The comparison highlights that while multiple antimicrobial technologies exist, their applications, regulatory acceptance, and consumer exposure contexts can differ significantly based on chemical properties and intended use conditions.

Common Food Applications Narrative

In the broader landscape of food processing and packaging, disodium cyanodithioimidocarbonate finds its niche in specialized applications where microbial control is necessary for maintaining equipment and material performance. In sugar production facilities, processing water circulating through extraction and clarification stages can become a breeding ground for bacteria and fungi, leading to slime formation that hinders flow and fouling of heat exchangers. Incorporating antimicrobial agents such as disodium cyanodithioimidocarbonate into these waters helps suppress microbial populations and minimizes operational disruptions. Beyond sugar mills, the compound’s utility extends to paper and paperboard coatings that are designed for contact with dry food products such as bakery items, confectionery, and dry mixes. In these settings, slimicides are added to surface formulations to reduce microbial colonization on the packaging material, protecting the substrate during storage and handling. Similarly, adhesives used to bind packaging laminates can include antimicrobial agents to enhance hygienic performance without compromising the structural integrity of the package or the safety of the food. Food processors and packaging manufacturers choose additives like disodium cyanodithioimidocarbonate where specific regulatory authorizations allow their inclusion. These niche uses reflect targeted solutions to microbial challenges in controlled settings rather than broad application across diverse food categories. As with all indirect additives, the implementation of disodium cyanodithioimidocarbonate in process water systems, coatings, and adhesives is accompanied by conditions of use that align with safety evaluations and regulatory frameworks, ensuring that its functional benefits are realized without introducing unintended risks to consumers or final products.

Safety & Regulations

FDA

  • Notes: Listed in FDA food contact substance inventory with associated CFR sections but specific approval conditions and limitations require review of the d regulations.

EFSA

  • Notes: No specific EFSA evaluation or E number authorization for this compound was identified.

JECFA

  • Notes: No JECFA acceptable daily intake or evaluation entry was identified for general dietary use.

Sources

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