What is Sodium Myristate?
Sodium myristate (CAS Number: 822-12-8) is the sodium salt of myristic acid, a saturated fatty acid with 14 carbon atoms. It belongs to the class of compounds known as fatty acid salts or soap-like substances. Chemically, it consists of a hydrophilic (water-loving) sodium head attached to a long hydrophobic (water-repelling) hydrocarbon chain, giving it amphipathic properties that make it useful in food applications.
Common Uses
Sodium myristate is used in food manufacturing for multiple technical functions:
**Emulsifier**: It helps blend oil and water-based ingredients that normally don't mix, stabilizing emulsions in products like dressings, sauces, and processed foods.
**Anticaking Agent**: In powdered products such as salt, spices, and dry mixes, sodium myristate prevents clumping and maintains flowability during storage and transport.
**Release Agent**: It functions as a lubricant in food processing, preventing sticking during manufacturing and packaging of baked goods, confections, and other products.
Sodium myristate is used in relatively small quantities, typically ranging from 0.1% to 1% depending on the application and desired effect.
Safety Assessment
Sodium myristate has an established history of use in food and cosmetic applications. According to FDA records, there have been zero adverse events and zero recalls associated with this additive, indicating a strong safety profile in commercial use.
From a toxicological perspective, sodium myristate is derived from myristic acid, a naturally occurring saturated fatty acid found in foods like coconut oil, palm oil, and dairy products. The sodium salt form is considered to have low toxicity. Studies on similar fatty acid salts show they are generally poorly absorbed in the gastrointestinal tract and are readily metabolized or excreted.
The compound is non-toxic at typical dietary exposure levels. No acute toxicity, chronic toxicity, genotoxicity, or carcinogenicity concerns have been identified in scientific literature at food use levels. Allergic reactions are extremely rare, as fatty acid salts do not typically trigger immune responses.
Regulatory Status
Sodium myristate is not on the FDA's Generally Recognized as Safe (GRAS) list. However, this does not indicate a safety concern; rather, it reflects that the additive may be used under FDA regulations through a different approval pathway or may have limited commercial significance in certain markets.
The additive is approved for use in food in the European Union under the E-number system (E470a encompasses fatty acid salts including sodium myristate) and is regulated by EFSA (European Food Safety Authority). It appears on the FDA's Food Additives Status List and is permitted for use as an indirect food additive in certain applications.
Regulatory acceptance varies by jurisdiction and specific food application, so manufacturers must verify compliance with local regulations before use.
Key Studies
While specific studies exclusively on sodium myristate are limited, safety data on fatty acid salts generally demonstrate minimal health concerns at food use levels. Research on similar compounds (sodium palmitate, sodium stearate) shows they are metabolized similarly to dietary fats and do not accumulate in tissues.
Safety assessments by EFSA on E470a (fatty acid salts) have confirmed acceptable daily intake levels well above typical food exposure. Myristic acid itself, the parent compound, has been extensively studied as a dietary component with established metabolic pathways.
No epidemiological evidence links sodium myristate consumption to adverse health outcomes. The zero adverse event reports and zero recalls in FDA databases support its continued safe use at current levels in food applications.