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C-Chain Distribution
For Oilfield Chemicals
Tallow Fatty Acids
Formulators often need more than a general-purpose fatty acid. The material’s degree of unsaturation, solidification behavior, color, and chain distribution can affect processing, handling, downstream reactions, and suitability for the finished formulation.
EMERY® tallow fatty acids offer a versatile source of C16-C18 chemistry for industrial applications ranging from metallic soaps and alkyd resins to rubber chemicals and metalworking fluids. Emery offers several grades with distinct iodine value, titer, color, and composition specifications, allowing formulators to evaluate the product around their specific processing and performance requirements.
Contact Us to request technical data, discuss grade selection, or connect with the Emery team.
Tallow Fatty Acid Quick Facts
| Category | Details |
| Feedstock origin | Animal-derived tallow |
| Typical chemistry | A mixture of primarily C16 and C18 saturated and unsaturated fatty acids |
| Common applications | Metallic soaps, alkyd resins, cleaners, rubber chemicals, metalworking fluids, oilfield chemicals, textiles, and buffing compounds |
| Emery grades | EMERY® 401, EMERY® 531, EMERY® 534, and EMERY® 536 |
| Grade-selection factors | Acid value, iodine value, titer, color, chain distribution, processing conditions, and finished-product requirements |
| Next step | Contact Us to discuss your application. |
What Are Tallow Fatty Acids?
Tallow fatty acids are animal-derived oleochemicals produced from rendered tallow. They consist primarily of C16 and C18 fatty acids, including oleic, palmitic, and stearic acids. Their carboxyl groups provide reactive sites for producing soaps, esters, metallic salts, and other industrial derivatives.
Tallow and tallow fatty acids are related, but they are not chemically identical. Tallow primarily contains triglycerides, which consist of fatty acids attached to glycerol. During fatty acid production, those triglycerides are split or hydrolyzed to separate the fatty acids from the glycerol portion. The resulting fatty acid stream may then be refined, distilled, or hydrogenated according to the desired grade.
The composition of tallow fatty acids is not fixed across every product. Feedstock, processing, hydrogenation, and grade specifications can change the balance of saturated and unsaturated components and the material’s physical properties.
Key Properties and Performance
A product name alone does not provide enough information to select a tallow fatty acid. Formulators should review the published specifications and evaluate how they relate to the complete formulation.
| Property | What it indicates | Why it matters |
| Acid value | The amount of potassium hydroxide required to neutralize the fatty acids in a defined sample | Supports reaction calculations and comparison of fatty acid materials |
| Iodine value | The degree of unsaturation in the fatty acid mixture | Helps compare grades for stability, physical behavior, and downstream chemistry |
| Titer | Solidification behavior | Affects storage, heating, transfer, processing, and finished physical form |
| Color | The measured appearance of the raw material | May matter when producing light-colored or appearance-sensitive products |
| C16/C18 distribution | The relative amount of major fatty acid chain lengths | Helps distinguish grades and evaluate their fit for the intended chemistry |
Hydrogenation is another important distinction. The process reduces unsaturation by converting some carbon-carbon double bonds into single bonds. Depending on the degree of hydrogenation, this can change iodine value, titer, oxidation behavior, and physical form.
These properties interact with one another. Final performance should therefore be evaluated in the complete formulation rather than predicted from one specification alone.
Common Industrial Applications
Tallow fatty acids serve as reactive raw materials, chemical intermediates, and functional formulation components. Their exact role depends on the selected grade and downstream chemistry.
Metallic Soaps and Chemical Derivatives
Fatty acids can react with metals or metal compounds to form metallic soaps. These materials are used in applications such as lubricants, plastics, rubber processing, coatings, and other industrial formulations.
Tallow fatty acids can also react with alcohols to form esters and with alkalis to form conventional soaps. Their C16-C18 composition makes them useful starting materials for a range of fatty acid derivatives.
Alkyd Resins, Paints, and Coatings
Tallow fatty acids can serve as reactive feedstocks in alkyd resin chemistry. Formulators should consider iodine value, fatty acid composition, color, viscosity targets, drying requirements, and compatibility with the rest of the resin system when evaluating a grade.
Rubber, Plastics, and Buffing Compounds
Rubber and plastics manufacturers use fatty acids and their derivatives as processing materials, intermediates, lubricants, stabilizer components, and release aids. Tallow-based materials are also used in buffing compounds, where physical form, binding behavior, and processing temperature may influence selection.
Metalworking Fluids and Lubricants
Fatty acids and their derivatives can support lubricity, emulsification, corrosion-control chemistry, and other formulation functions in industrial fluids. The appropriate grade depends on the base fluid, metal type, operating conditions, temperature, and complete additive package.
Explore Emery’s broader portfolio of metalworking fluid additives for additional formulation options.
Cleaners, Oilfield Chemicals, and Textiles
Additional tallow fatty acid uses include industrial and institutional cleaners, oilfield corrosion-inhibitor chemistry, construction chemicals, textile softeners, and other industrial intermediates. The selected material should be tested for the intended reaction, substrate, processing conditions, and finished-product requirements.
Tallow vs. Vegetable Fatty Acids
Tallow and vegetable fatty acids both come from natural fats and oils, but feedstock labels do not establish identical composition or performance. Buyers should compare the exact grades rather than assume that two fatty acids are interchangeable because they share a similar name.
| Consideration | Tallow fatty acids | Vegetable fatty acids |
| Feedstock | Animal-derived fats | Plant-derived oils and fats |
| Composition | Commonly rich in C16 and C18 saturated and monounsaturated fatty acids | Varies substantially among palm, soybean, canola, coconut, and other sources |
| Available processing | May be distilled, partially hydrogenated, or fully hydrogenated | May also be distilled, fractionated, or hydrogenated |
| Documentation considerations | Animal-origin, customer-policy, and market requirements may apply | Plant source, non-GMO, RSPO, allergen, or other documentation may apply |
| Best selection method | Compare the grade’s specifications and application fit | Compare the grade’s specifications and application fit |
Neither source is automatically better for every formulation. Required fatty acid distribution, iodine value, titer, color, certification, regional availability, and customer restrictions should guide the decision.
Formulators can compare Emery’s related portfolios of oleic acids, stearic acids, and other products derived from natural oils and fats.
Emery Tallow Fatty Acid Grades
Emery offers four EMERY® tallow fatty acid grades with different published specification ranges.
| Product | Description | Acid value, mg KOH/g | Iodine value | Titer, °C | Published color | C16, % | C18, % |
| EMERY® 401 | Partially hydrogenated tallow fatty acid | 200-208 | 37-45 | 44-50 | 80% min at 440 nm; 93% min at 550 nm | 23-26 | 23-28 |
| EMERY® 531 | Tallow fatty acid | 200-208 | 45-70 | 36-44 | 19% min at 440 nm; 81% min at 550 nm | 20-27 | 17-23 |
| EMERY® 534 | Tallow fatty acid | 202-208 | 45-60 | 40-44 | 3 Gardner max | 20-27 | 16-21 |
| EMERY® 536 | Tallow fatty acid | 204-208 | 52 max | 40.5 min | 80% min at 440 nm; 95% min at 550 nm | 23-28 | 16-23 |
EMERY® 401 is the partially hydrogenated option in the published portfolio. EMERY® 531 has the broadest listed iodine-value range and lowest titer range, while EMERY® 534 and EMERY® 536 provide different iodine, titer, and color specifications.
These distinctions provide useful screening criteria, but the specifications do not replace formulation testing or technical review.
Contact Us to request the appropriate technical data sheet or discuss an EMERY® grade.
How to Choose the Right Tallow Fatty Acid Grade
Begin with the application and manufacturing process rather than choosing solely by product name.
- Define the fatty acid’s role. Determine whether it will be used directly or converted into a soap, ester, metallic salt, resin, or another derivative.
- Review the required iodine value. Consider how the degree of unsaturation may affect downstream chemistry, stability, and physical behavior.
- Evaluate titer and handling. Confirm storage temperature, heating capability, transfer method, and the physical form required during production.
- Establish color requirements. Light-colored finished products may require tighter raw-material color specifications.
- Compare chain distribution. Review the published C16 and C18 ranges alongside the complete fatty acid profile needed for the application.
- Confirm documentation and supply requirements. Ask about current North American availability, packaging, technical data, safety information, feedstock documentation, and any required certifications.
A qualified tallow fatty acid supplier should provide more than a product name. Technical support, reliable specifications, documentation, and access to representative samples can help formulators screen a grade before production-scale testing.
Frequently Asked Questions About Tallow Fatty Acids
What is the difference between tallow and tallow fatty acids?
Tallow primarily consists of triglycerides. Tallow fatty acids are the free fatty acids obtained after those triglycerides are split, allowing the fatty acids to be used directly or converted into other chemical derivatives.
What are the main tallow fatty acid uses?
Common uses include metallic soaps, alkyd resins, cleaners, metalworking fluids, lubricants, oilfield chemicals, textile chemicals, rubber processing materials, construction chemicals, and buffing compounds.
What fatty acids are found in tallow fatty acid products?
Tallow fatty acid products commonly contain mixtures of C16 and C18 fatty acids, including palmitic, stearic, and oleic acids. Exact composition varies by feedstock, processing, and product grade.
What is partially hydrogenated tallow fatty acid?
Partially hydrogenated tallow fatty acid has undergone controlled hydrogenation to reduce some of its unsaturation. This changes properties such as iodine value, titer, stability, and physical behavior.
Are tallow fatty acids renewable?
Animal fats and oils are recognized as renewable feedstocks for the chemical industry. However, renewable origin alone does not establish a product’s complete sustainability profile. Buyers should review sourcing, manufacturing, transportation, certifications, and available lifecycle information.
Are tallow and vegetable fatty acids interchangeable?
Not automatically. Even when grades have similar chain lengths, differences in composition, iodine value, titer, color, documentation, and physical behavior may affect processing and finished performance.
How do I choose among Emery’s tallow fatty acid grades?
Compare acid value, iodine value, titer, color, chain distribution, processing needs, and finished-product requirements. Emery’s technical team can help identify appropriate grades for further testing.
Looking for a vegetable-derived option? See our vegetable fatty acids.
Need a technical data sheet or sample of our tallow fatty acids? Contact our team. Contact Us