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OCTADECANOIC ACID, TRIDECYL ESTER

Octadecanoic Acid, Tridecyl Ester may be used as a lubricant and lubricity-enhancing component in industrial formulations.
Octadecanoic acid, tridecyl ester can help reduce friction between surfaces and improve the handling and processing characteristics of oil-based systems.
Octadecanoic acid, tridecyl ester may be incorporated into metalworking fluids and other specialty lubricating formulations where a long-chain fatty ester is suitable.

CAS Number: 31556-45-3
EC Number / EINECS: 250-696-7
Molecular Formula: C31H62O2
Molecular Weight: 466.82 g/mol

SYNONYMS:
Tridecyl stearate, Tridecyl octadecanoate, Octadecanoic acid, tridecyl ester, Stearic acid, tridecyl ester, Tridecanol stearate, NSC 152080, Cirrasol LN-GS, Stearic acid, C11-14-isoalkyl esters, C13-rich, Octadecanoic acid, C11-14-isoalkyl esters, C13-rich,Octadecanoic acid, tridecyl ester,Tridecyl octadecanoate, 31556-45-3, Cirrasol LN-GS, EINECS 250-696-7, NSC 152080, Stearic acid, tridecyl ester, Tridecanol stearate, UNII-A8OE252M6L, Nsc152080, Cirrasol ln-gs, tridecyl stearate, Tridecanol stearate, STEARICACID,TRIDECYLESTER, Octadecanoic acid, tridecyl ester,Tridecyl stearate ISO 9001：2015 REACH,TRIDECYL STEARATE,Octadecanoic acid, tridecyl ester,UNII-A8OE252M6L,A8OE252M6L,LIPONATE TDS,ETHOX TDS,EINECS 250-696-7,NSC 152080,NSC-152080,UNIFLEX 188,KEMESTER 5721,1-TRIDECANOL, STEARATE,DTXSID2027967, RefChem:191459, DTXCID107967, TRIDECYL STEARATE [INCI], 250-696-7, 31556-45-3, tridecyl octadecanoate, Cirrasol LN-GS, Tridecanol stearate,Stearic acid, tridecyl ester,Octadecanoic acid,tridecyl ester,SCHEMBL153240,GKAVWWCJCPVMNR-UHFFFAOYSA-N,MFCD00072282,NSC152080, AS-78012, NS00014167, D93439,F844086, Q27273780, cirrasol LN-GS,octadecanoic acid, C11-14 iso-, C13-rich alkyl esters,octadecanoic acid, C11-14-isoalkyl esters, C13-rich,octadecanoic acid, tridecyl ester,stearic acid, C11-14 iso-, C13-rich alkyl esters,stearic acid, tridecyl ester,tridecanol stearate,tridecyl octadecanoate,tridecyl stearate,Octadecansaeure-tridecylester,STEARICACID,TRIDECYLESTER,Stearinsaeure-n-tridecylester,Cirrasol ln-gs,Tridecanol stearate,Stearinsaeuretridecylester,Octadecanoic acid,tridecyl ester

Octadecanoic acid, tridecyl ester (CAS 31556-45-3) is a long-chain fatty acid ester formed via the esterification of tridecyl alcohol (C13) with stearic acid (C18), classified as a wax monoester with the molecular formula C₃₁H₆₂O₂.
Octadecanoic acid, tridecyl ester exhibits a reported melting point range of 49.2–49.6°C and a density of 0.858 g/cm³ at 20°C, rendering it a solid at ambient temperature .

In cosmetic applications, Octadecanoic acid, tridecyl ester functions primarily as an emollient and texture-enhancing/thickening agent, with typical use concentrations ranging from 1–10% in finished formulations.
Octadecanoic acid, tridecyl ester is the ester obtained from the reaction of tridecyl alcohol combined with stearic acid.

Octadecanoic acid, tridecyl ester’s used in cosmetics as a texture-enhancer/thickening agent and emollient and may be animal-derived or synthetic.
In raw material form, Octadecanoic acid, tridecyl ester is described as a clear oily liquid that may have a light-yellow hue.
Octadecanoic acid, tridecyl ester is an ester of Tridecyl Alcohol (q.v.) and stearic acid.

Octadecanoic acid, tridecyl ester is a fast-absorbing emollient that leaves no shine.
Octadecanoic acid, tridecyl ester has a dry, non-greasy feel on application with an elegant, velvety after-feel.
Octadecanoic acid, tridecyl ester, or tridecyl stearate, is a long-chain fatty ester containing one ester functional group and two long hydrocarbon portions.

One portion of Octadecanoic acid, tridecyl ester originates from stearic acid and contains 18 carbon atoms, while the alcohol-derived portion contains 13 carbon atoms.
The esterification of stearic acid with tridecyl alcohol produces a molecule that is substantially less polar than either of Octadecanoic acid, tridecyl ester's parent functional groups.

Consequently, tridecyl stearate has a strongly hydrophobic and oil-compatible character, very low water solubility and a high calculated octanol/water partition coefficient.
Its long hydrocarbon structure gives Octadecanoic acid, tridecyl ester useful lubricity, spreading properties, slip, emolliency and sensory characteristics.
For this reason, Octadecanoic acid, tridecyl ester is particularly relevant to cosmetic and personal-care formulations, while ester chemistry also makes it useful in specialty lubricant and formulation applications.

Octadecanoic Acid, Tridecyl Ester is an ester formed from octadecanoic acid, commonly known as stearic acid, and tridecyl alcohol.
Octadecanoic acid, tridecyl ester is a long-chain fatty ester with a high proportion of hydrocarbon groups and a strongly hydrophobic character.
Octadecanoic acid, tridecyl ester is generally insoluble or only slightly soluble in water and shows good compatibility with many non-polar organic materials.

Octadecanoic acid, tridecyl ester's long-chain structure contributes to low volatility, good lubricity, and resistance to moisture.
Octadecanoic Acid, Tridecyl Ester is typically encountered as an industrial specialty ester used in formulations where lubrication, surface properties, and water repellency are desired.

Octadecanoic acid, tridecyl ester's physical properties can vary depending on purity, isomeric composition, and the manufacturing process.
Octadecanoic acid, tridecyl ester can be useful as a functional component in oil-based formulations because of its fatty ester structure and relatively high molecular weight.

USES and APPLICATIONS of OCTADECANOIC ACID, TRIDECYL ESTER:
Industrial applications include Octadecanoic acid, tridecyl ester's use as an internal lubricant in magnetic recording media and as a processing aid in synthetic fiber spin finishes, where its thermal stability and lubricity are exploited.
Octadecanoic acid, tridecyl ester is used as a skin-conditioning agent and an emollient.

Octadecanoic acid, tridecyl ester can also be used as an emollient or conditioning component in selected industrial and personal-care formulations.
Its hydrophobic nature makes Octadecanoic acid, tridecyl ester useful in applications where water resistance or moisture-repellent properties are required.
Octadecanoic acid, tridecyl ester may serve as a plasticizing or softening component in certain polymer and coating formulations.

Octadecanoic acid, tridecyl ester can be used as a formulation aid in paints, coatings, polishes, and surface-treatment products where improved spreading and surface feel are desirable.
Octadecanoic acid, tridecyl ester's low volatility and oily character can also be advantageous in specialty formulations requiring persistent lubricating or surface-modifying properties.

Octadecanoic acid, tridecyl ester may be considered for use in agricultural formulations and other oil-based systems where fatty esters are employed as carriers or formulation components.
The exact application of Octadecanoic acid, tridecyl ester depends on the purity, technical grade, formulation requirements, and performance characteristics of the particular commercial material.

-Cosmetics and Personal Care uses of Octadecanoic acid, tridecyl ester:
The best-documented application of Octadecanoic acid, tridecyl ester is in cosmetic and personal-care formulations.
Octadecanoic acid, tridecyl ester functions primarily as an emollient and skin-conditioning agent.
Octadecanoic acid, tridecyl ester can help soften the skin, improve the feel of a formulation and provide a smooth, lubricated sensation after application.

Octadecanoic acid, tridecyl ester can be incorporated into: Skin creams, Facial moisturizers, Body lotions, Creams, Cleansers, Sun-care products, After-sun products, Hair-care products, Baby-care formulations, Decorative cosmetics, Make-up formulations, Anti-aging products, Anti-acne formulations, Skin-conditioning products.
Commercial technical information specifically lists skin care, sun care, hair care, body care, baby care, decorative cosmetics, facial care, creams, lotions and cleansers as application areas of Octadecanoic acid, tridecyl ester.

-Emollient uses of Octadecanoic acid, tridecyl ester:
One of Octadecanoic acid, tridecyl ester's principal functions is to act as an emollient.
An emollient helps improve the surface feel of skin by providing lubrication and helping reduce the perception of dryness and roughness.
Octadecanoic acid, tridecyl ester is described as a medium-feel emollient with rapid absorption and a velvety after-feel.

-Texture Modification uses of Octadecanoic acid, tridecyl ester:
Octadecanoic acid, tridecyl ester can also contribute to the texture and sensory properties of formulations.
Octadecanoic acid, tridecyl ester can help produce: Smooth spreading, Improved slip, Soft skin feel, Velvety after-feel, Reduced tackiness, Improved cream texture, Improved oil-phase aesthetics.
These properties are valuable in creams, lotions, make-up products and other leave-on formulations.

-Hair Care uses of Octadecanoic acid, tridecyl ester:
Octadecanoic acid, tridecyl ester can be incorporated into certain hair-care products where lubrication, conditioning and improved sensory characteristics are desired.
Commercial technical information lists hair care among Octadecanoic acid, tridecyl ester's recommended application areas.

-Sun Care uses of Octadecanoic acid, tridecyl ester:
Octadecanoic acid, tridecyl ester can be used in sunscreen and sun-care formulations as an emollient and sensory modifier.
Octadecanoic acid, tridecyl ester helps formulate an oil phase with good spreadability and a smoother skin feel.

-Make-Up and Decorative Cosmetics uses of Octadecanoic acid, tridecyl ester:
Octadecanoic acid, tridecyl ester is also suitable for decorative cosmetics and make-up because emollient esters can improve spreading, slip and the feel of pigments and other oil-phase ingredients.
Octadecanoic acid, tridecyl ester may therefore occur in formulations such as: Foundations, Concealers, Lip products, Cream make-up, Make-up bases, Skin tints, and related products.

-Lubricating Applications of Octadecanoic acid, tridecyl ester:
Outside cosmetics, Octadecanoic acid, tridecyl ester has been identified in industry as a lubricating agent.
Octadecanoic acid, tridecyl ester's long hydrocarbon chains and ester functionality can provide useful lubricating characteristics, particularly where a low-volatility, oil-compatible ester is desired.

BENEFITS AND ADVANTAGES of OCTADECANOIC ACID, TRIDECYL ESTER:
Octadecanoic acid, tridecyl ester has several technical advantages.

Good emolliency:
Octadecanoic acid, tridecyl ester provides a soft, smooth skin feel.

Excellent lipophilicity:
Its high hydrophobicity makes Octadecanoic acid, tridecyl ester highly compatible with oil phases.

Low water solubility:
This makes Octadecanoic acid, tridecyl ester appropriate for oil-phase formulations and water-resistant systems.

Good spreading characteristics:
Octadecanoic acid, tridecyl ester can help cosmetic products spread evenly over the skin.

Good slip:
Octadecanoic acid, tridecyl ester can reduce drag during application.

Velvety after-feel:
Commercial cosmetic suppliers specifically describe Octadecanoic acid, tridecyl ester as producing a velvety after-feel.

Low volatility:
Octadecanoic acid, tridecyl ester's high molecular weight and very low estimated vapor pressure reduce evaporation under normal conditions.

Lubricating properties:
The ester structure and long hydrocarbon chains provide useful lubricity.

Nonionic character:
Octadecanoic acid, tridecyl ester does not carry an ionic charge under normal conditions.

Formulation versatility:
Octadecanoic acid, tridecyl ester can be incorporated into numerous oil-based and emulsion-type cosmetic systems.

Texture enhancement:
Octadecanoic acid, tridecyl ester can improve the sensory characteristics of creams and lotions.

Compatibility with cosmetic oils:
Its strongly lipophilic nature allows Octadecanoic acid, tridecyl ester to work effectively within the oil phase.

CHEMICAL PROPERTIES of OCTADECANOIC ACID, TRIDECYL ESTER:
Octadecanoic acid, tridecyl ester contains a single ester functional group (-COO-) connecting a C18 fatty-acid-derived chain with a C13 alcohol-derived chain.
Octadecanoic acid, tridecyl ester is therefore a monoester of a long-chain fatty acid.

Octadecanoic acid, tridecyl ester contains:
31 carbon atoms
62 hydrogen atoms
2 oxygen atoms
1 ester functional group
No nitrogen, sulfur, phosphorus or halogen atoms

Octadecanoic acid, tridecyl ester's structure can be represented conceptually as: C17H35–COO–C13H27
This structure explains many of Octadecanoic acid, tridecyl ester's physical properties.
The long saturated hydrocarbon chains strongly reduce polarity, while the ester group provides the limited polar functionality necessary for interactions with other formulation components.

Because the hydrocarbon chains are saturated, Octadecanoic acid, tridecyl ester contains no carbon-carbon double bonds.
This distinguishes Octadecanoic acid, tridecyl ester from unsaturated fatty esters such as tridecyl oleate.

Octadecanoic acid, tridecyl ester is therefore:
Highly hydrophobic.
Highly lipophilic.
Low in polarity.
Very poorly soluble in water.
Compatible with many oils and lipophilic formulation components.
Low in volatility.

Relatively resistant to evaporation under ordinary conditions.
Capable of providing lubrication and slip.
Octadecanoic acid, tridecyl ester is suitable for producing a smooth, non-tacky sensory profile in cosmetic formulations.
The very high calculated Log P of approximately 14.5 is particularly indicative of Octadecanoic acid, tridecyl ester'strong preference for non-aqueous/lipid environments.

CHARACTERISTICS of OCTADECANOIC ACID, TRIDECYL ESTER:
Octadecanoic acid, tridecyl ester can be characterized as a long-chain fatty acid ester, oleochemical ester, hydrophobic organic compound, high-molecular-weight aliphatic ester, nonionic ester, low-volatility material, strongly lipophilic substance, oil-compatible material, emollient ester, lubricating ester, and surface-conditioning ingredient.

Octadecanoic acid, tridecyl ester's long carbon chains provide a combination of hydrophobicity, lubricity and spreading behavior.
The ester linkage prevents it from behaving like a free fatty acid; consequently, Octadecanoic acid, tridecyl ester generally has a much less acidic character than stearic acid itself.

Unlike stearic acid, Octadecanoic acid, tridecyl ester does not possess a free carboxylic acid group.
This makes Octadecanoic acid, tridecyl ester useful where formulators want the functional properties of a fatty material without introducing the same level of acidity associated with a free fatty acid.
Octadecanoic acid, tridecyl ester can provide slip, softness, spreading, emolliency and a smooth after-feel, making it especially useful in cosmetic formulations.

PHYSICAL and CHEMICAL PROPERTIES of OCTADECANOIC ACID, TRIDECYL ESTER:
Chemical Name: Octadecanoic acid, tridecyl ester
Common Name: Tridecyl Stearate
IUPAC Name: Tridecyl octadecanoate
CAS Number: 31556-45-3
EC Number / EINECS: 250-696-7
PubChem CID: 35847
Molecular Formula: C31H62O2
Molecular Weight: 466.82 g/mol
Molecular Weight, calculated: approximately 466.83 g/mol
InChIKey: GKAVWWCJCPVMNR-UHFFFAOYSA-N

Canonical SMILES: CCCCCCCCCCCCCCCCCC(=O)OCCCCCCCCCCCCC
Chemical Family: Fatty acid esters / long-chain aliphatic esters
Functional Class: Emollient, skin-conditioning ester, lubricant-type ester
Physical character: Long-chain, highly hydrophobic organic ester.
Appearance: Tridecyl stearate can occur as a clear, colorless to slightly yellow oily material.
Commercial physical form can depend on purity, composition and temperature.
Some suppliers describe it as a liquid, while other databases classify the pure material as a solid around ambient conditions because its melting behavior is close to room temperature.
Physical State: Solid or oily liquid depending on temperature and grade.
Commercial cosmetic grades can remain liquid at room temperature, whereas highly pure material may exhibit wax-like/solid behavior near room temperature.

Molecular Weight: 466.82 g/mol.
Molecular Formula: C31H62O2.
Boiling Point: Approximately 496.0 °C at 760 mmHg, calculated/predicted.
ChemicalBook reports 496.0 ± 13.0 °C, while the Cosmetic Ingredient Review assessment gives 496.0 °C as a calculated value.
Density: Approximately 0.858 g/cm³ at 20 °C, calculated. ChemicalBook gives approximately 0.858 ± 0.06 g/cm³ as a predicted value.
Flash Point: Approximately 262.7 °C, estimated by the TCC method.
Melting Point: A universally consistent experimentally verified value is not readily available in the principal databases. Some secondary sources estimate a melting range around 49–50 °C, whereas other databases list the melting point as unavailable.
Therefore, this value should be treated as estimated rather than a definitive specification.

Refractive Index: Approximately 1.454, reported by secondary chemical databases.
Log P / XlogP: Approximately 14.54, calculated/estimated. This extremely high value reflects the strongly lipophilic nature of the molecule. The Cosmetic Ingredient Review assessment reports a calculated Log P of 14.541.
Water Solubility: Extremely low. An estimated value of approximately 1.011 × 10⁻⁹ mg/L at 25 °C has been reported.
In practical terms, it should be regarded as practically insoluble in water.
Vapor Pressure: Very low, with a secondary database reporting approximately 5.6 × 10⁻¹⁰ mmHg at 25 °C.
This is consistent with its high molecular weight and long hydrocarbon chains.
Odor: Essentially odorless or with only a characteristic weak odor depending on the commercial grade.
A commercial tridecyl stearate technical data sheet describes the material as essentially odorless.

Water Compatibility: Very poor because the molecule contains only two oxygen atoms compared with 31 carbon atoms and has two extensive hydrocarbon regions.
Oil Compatibility: High. Its strongly lipophilic character makes it suitable for oil phases and ester-based formulations.
Polarity: Low.
Hydrophobicity: Very high.
Volatility: Very low under normal ambient conditions.
Thermal Behavior: The long-chain ester has a relatively high calculated boiling point and a low vapor pressure, although prolonged heating should still be avoided because thermal decomposition can occur before or around high-temperature boiling conditions.
CBNumber:CB5904574
Molecular Formula:C31H62O2
Molecular Weight:466.82
MDL Number:MFCD00072282

MOL File:31556-45-3.mol
Boiling point: 496.0±13.0 °C(Predicted)
Density: 0.858±0.06 g/cm3(Predicted)
Cosmetics Ingredients Functions: SKIN CONDITIONING
SKIN CONDITIONING - EMOLLIENT
LogP: 14.541 (est)
EWG's Food Scores: 1
FDA UNII: A8OE252M6L
EPA Substance Registry System: Tridecyl stearate (31556-45-3)
Molecular Weight: 466.8 g/mol
XLogP3-AA: 14.7

Hydrogen Bond Donor Count: 0
Hydrogen Bond Acceptor Count: 2
Rotatable Bond Count: 29
Exact Mass: 466.47498122 Da
Monoisotopic Mass: 466.47498122 Da
Topological Polar Surface Area: 26.3 Å²
Heavy Atom Count: 33
Formal Charge: 0

Complexity: 366
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1
Compound Is Canonicalized: Yes
ECHA EINECS - REACH Pre-Reg: 250-696-7
FDA UNII: A8OE252M6L

Nikkaji Web: J278.143C
XlogP3-AA: 14.70 (est)
Molecular Weight: 466.83354000
Formula: C31 H62 O2
Assay: 95.00 to 100.00
Boiling Point: 496.05 °C. @ 760.00 mm Hg (est)
Flash Point: 505.00 °F. TCC ( 262.70 °C. ) (est)
logP (o/w): 14.541 (est)
Soluble in: water, 1.011e-009 mg/L @ 25 °C (est)

FIRST AID MEASURES of OCTADECANOIC ACID, TRIDECYL ESTER:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation:
Fresh air.
*In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Call in ophthalmologist.
Remove contact lenses.
*If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of OCTADECANOIC ACID, TRIDECYL ESTER:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area.

FIRE FIGHTING MEASURES of OCTADECANOIC ACID, TRIDECYL ESTER:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2)
Foam
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of OCTADECANOIC ACID, TRIDECYL ESTER:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of OCTADECANOIC ACID, TRIDECYL ESTER:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.

STABILITY and REACTIVITY of OCTADECANOIC ACID, TRIDECYL ESTER:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available

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