DIETHYLENE GLYCOL DISTEARATE
DIETHYLENE GLYCOL DISTEARATE (CAS 109-30-8) is a diester of diethylene glycol and stearic acid, a waxy white solid widely used industrially as an emulsifier and stabilizer in various products.
What It Is
DIETHYLENE GLYCOL DISTEARATE is a chemical compound formed by esterifying diethylene glycol with two molecules of stearic acid to produce a diester. It appears as a waxy, white solid at room temperature and is characterized by its long hydrocarbon chains and nonionic surfactant nature, which make it useful in multiple industries for modifying texture and compatibility between otherwise immiscible phases. Its CAS registry number is 109-30-8, and it may be referenced under various synonymous chemical names that describe its ester structure or functional groups. The structure confers both lipophilic and hydrophilic components, allowing it to function as an emulsifying agent and rheology modifier in applications ranging from cosmetics to industrial formulations. While databases document its physicochemical identity, there is limited high‑level evidence supporting direct dietary use or regulatory approval as a food additive, and it is not commonly listed among codified food additives in major food additive regulatory inventories. This narrative is based on publicly available chemical profiles and technical descriptions.
How It Is Made
DIETHYLENE GLYCOL DISTEARATE is manufactured through a chemical synthesis process involving the esterification of diethylene glycol with stearic acid or its derivatives under controlled conditions. The reaction typically proceeds with a molar excess of stearic acid or through azeotropic removal of water to drive the equilibrium toward formation of the diester linkage. Catalysts such as acid catalysts may be used to enhance the esterification reaction, and the resulting crude product is often purified by neutralization and recrystallization to achieve a high‑purity diester product. The process yields a substance that is non‑ionic and possesses significant lipophilic character due to the two stearate chains, which influences both its physical behavior and its utility as a formulation excipient.
Why It Is Used In Food
There is limited evidence that DIETHYLENE GLYCOL DISTEARATE is intentionally used as a direct food additive in regulated food products in major jurisdictions, and it does not appear to be widely codified in standard food additive lists; its presence in regulatory databases may reflect historical listings rather than approved direct food uses. Instead, compounds with structural similarity or partial functional overlap are used in food‑related applications primarily for technical functions such as emulsification, stabilization, or solubilization of flavoring agents. The high lipophilicity and emulsifying capacity of the diester structure mean that such molecules can help disperse oil‑based components into aqueous food matrices in certain formulation contexts. However, without explicit inclusion in core food additive regulations or specific permitted use cases identified through authoritative inventory searches, it should be considered primarily as a technical excipient in non‑food or indirect applications rather than a direct food ingredient.
Adi Example Calculation
Because an explicit regulatory ADI for DIETHYLENE GLYCOL DISTEARATE is not established in authoritative food additive evaluations, an illustrative intake calculation using a numeric ADI cannot be provided. In risk assessment, authorities use established ADIs to benchmark exposure scenarios for authorized food additives, but absent such a consensus value for this compound, users should not apply arbitrary figures, and calculated exposure examples would not be grounded in formal regulatory guidance.
Safety And Health Research
Comprehensive toxicological evaluations specific to DIETHYLENE GLYCOL DISTEARATE in food contexts are not readily found in mainstream food safety evaluations. In industrial and cosmetic sectors, general safety data sheets describe handling precautions, physical hazards, and the potential for irritation with direct exposure. Broader concerns in similar chemical classes often focus on impurity profiles, particularly free diethylene glycol, which is known to have toxicity concerns. Where diester products are used, quality control to minimize free diethylene glycol contamination is emphasized due to known hazards associated with that contaminant. Given the absence of explicit food additive approvals, safety considerations should be framed in terms of general chemical handling and impurity control rather than established dietary exposure risk thresholds.
Regulatory Status Worldwide
Based on available regulatory search results and food additive inventories, DIETHYLENE GLYCOL DISTEARATE does not appear on core food additive expression lists such as food additives permitted under the U.S. Food and Drug Administration's direct additive regulations, nor is it clearly referenced with an E‑number or specific authorized use category in the European Union. Searches in the FDA Substances Added to Food inventory indicate general listings for many substances but do not confirm explicit additive approval or conditions of use for DIETHYLENE GLYCOL DISTEARATE. As such, definitive regulatory approvals or permitted food use conditions require consultation of specific national regulatory texts or additive petitions for clarity. Its presence in industrial or cosmetic contexts is better documented than regulatory sanction for direct food inclusion.
Taste And Functional Properties
DIETHYLENE GLYCOL DISTEARATE itself has no intrinsic flavor impact and is not used for taste modulation. Its functional properties derive from its amphiphilic structure that permits it to reduce interfacial tension between oil and water components, enhancing dispersion and stability of complex mixtures. This surfactant behavior confers utility in stabilizing emulsions, improving texture, and contributing to the visual and physical properties of formulated products. Its relatively low water solubility but good affinity for organic phases make it suited for systems where long‑chain fatty acid esters help sustain heterogeneous mixtures. Physical properties such as melting point and waxy texture can also influence viscosity and sensory characteristics when used at formulation‑relevant levels in topical, cosmetic, or industrial products.
Acceptable Daily Intake Explained
An Acceptable Daily Intake (ADI) is a regulatory construct representing the amount of a substance that can be consumed daily over a lifetime without appreciable health risk, based on toxicological data. For DIETHYLENE GLYCOL DISTEARATE specifically, there is no established food additive ADI in major international food additive schedules because it is not a commonly authorized food additive. Consequently, there is no consensus numeric ADI value assigned by bodies such as JECFA or EFSA for this compound, and normative exposure limits in food have not been codified.
Comparison With Similar Additives
Compared with classical food emulsifiers like lecithin or mono‑ and diglycerides of fatty acids, DIETHYLENE GLYCOL DISTEARATE differs in that it is a diester of a glycol and fatty acids rather than glycerol, and it has not been codified as a direct food additive in major food additive lists. Lecithin and glycerides are widely authorized and evaluated with established use levels and ADIs, whereas DIETHYLENE GLYCOL DISTEARATE is used mainly in cosmetic or industrial formulations where emulsification and appearance effects are valued. Other surfactants such as polysorbates have clear regulatory statuses with detailed specifications, while glycol diesters are typically encountered outside primary food additive categories.
Common Food Applications Narrative
While DIETHYLENE GLYCOL DISTEARATE is not widely documented as an authorized direct food additive, molecules with similar nonionic surfactant properties are sometimes encountered indirectly in food‑related contexts where emulsification or solubilization of flavoring or color components is needed. For instance, in complex liquid formulations where oil‑soluble components must be dispersed uniformly, formulating agents with long hydrophobic chains and hydrophilic linkers assist in achieving stable blends. In such broad conceptual terms, diester surfactants can support texture and stability, though the actual use of DIETHYLENE GLYCOL DISTEARATE in food is not standard. Regulatory databases suggest that related glycol esters may appear in inventories, but explicit conditions of food use are not codified, and therefore it is not routinely mentioned in mainstream food additive lists like those maintained by major food safety authorities.
Safety & Regulations
FDA
- Notes: No explicit FDA food additive regulation identified for DIETHYLENE GLYCOL DISTEARATE in the available authoritative sources.
EFSA
- Notes: No EFSA food additive evaluation or E number found in authoritative sources for this specific compound.
JECFA
- Notes: JECFA database does not list an explicit ADI for DIETHYLENE GLYCOL DISTEARATE; regulatory food use information not found.
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