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Octadecanamide is a long-chain fatty acid amide derived from stearic acid, typically appearing as a white to off-white, waxy solid with a faint fatty odor.
Owing to its waxy consistency, high melting point, and chemical inertness, Octadecanamide is widely used as a slip agent, mold release agent, and anti-blocking additive in plastics such as polyethylene, polypropylene, and PVC, where it improves surface smoothness and processing efficiency.
Octadecanamide is also employed in coatings, inks, rubber compounding, cosmetics, and metallurgy as a lubricant, dispersant, and thickener, valued for its non-toxic nature, thermal stability, and compatibility with a broad range of polymers and oils.
CAS Number: 110-30-5
EC Number: 203-755-6
Molecular Formula: C38H76N2O2
Molecular Weight: 593.02
Synonyms: Oxidized polyethylene wax (CAS 68441-17-8) condensation product with N,N'-(iminodipropane-1,3-diyl)distearamide (CAS 13998-73-7), N-[3-[(3-aminopropyl)amino]propyl]stearamide (42195-41-5), 3,3'-iminodi(propylamine) (CAS 56-18-8) and stearic acid (CAS 57-11-4), 931-860-3, Oxidized polyethylene wax (CAS 68441-17-8) condensation product with N,N'-(iminodipropane-1,3-diyl)distearamide (CAS 13998-73-7), N-(3-((3-aminopropyl)amino)propyl)stearamide (42195-41-5), 3,3'-iminodi(propylamine) (CAS 56-18-8) and stearic acid (CAS 57-11-4)N,N'-ETHYLENEBISSTEARAMIDE, N,N'-ETHYLENEBISOCTADECANAMIDE, 1,2-bis(octadecanamido)ethane, abrilwax10ds, Glyco(R) Asphalt Modifier beads, Acrawax(R) C atomized, N, N` Distearoylethyelendiamine, Acrawax(R) C beads
Octadecanamide is a long-chain fatty acid amide derived from stearic acid, typically appearing as a white to off-white, waxy solid with a faint fatty odor.
Octadecanamide is insoluble in water but dispersible in hot organic solvents and exhibits good lubricating, anti-blocking, and release properties.
Owing to its waxy consistency and chemical inertness, Octadecanamide is widely used as a slip agent, mold release agent, and anti-blocking additive in plastics such as polyethylene, polypropylene, and PVC, where it improves surface smoothness and processing efficiency.
Octadecanamide is also employed in coatings, inks, rubber compounding, and powder metallurgy to reduce friction and enhance product stability.
In addition, Octadecanamide serves as a lubricant and thickener in cosmetics and personal care formulations, where it contributes to texture, gloss, and stability.
Octadecanamide's non-toxic nature, thermal stability, and compatibility with a broad range of polymers and oils make it a valuable multifunctional additive in both industrial and consumer product applications.
Octadecanamide is a waxy white solid and is also found as powder or beads that is widely used as a form release agent.
Octadecanamide is derived from the reaction of ethylenediamine and stearic acid.
Octadecanamide is a white solid of low toxicity that provides a slippery coating for a variety of applications.
Octadecanamide is a synthetic or naturally derived wax-like compound that is primarily composed of stearamide, a type of amide derived from stearic acid, which is a long-chain fatty acid commonly found in animal fats, vegetable oils, and certain synthetic processes.
Octadecanamide is valued for its lubricating, anti-blocking, and surface-modifying properties, making it a widely used additive in plastics, coatings, rubber, cosmetics, and industrial applications.
Octadecanamide has a high melting point.
Octadecanamide’s used as ati-blocking/slip agent, external lubricant and decrease friction of polymer surface.
Applications are PVC processes, Masterbatch (polyolefins), engineering plastic compounds (PA 6, 66, PP, ABS, PS) and TPU. Forms are powder and bead.
Octadecanamide is derived from renewable vegetable oils.
Octadecanamide exhibits excellent lubricating properties internally and/or externally in most plastics such as ABS, PS, PP, and etc.
Octadecanamide functions as anti-static, dispersing agent, flow modifier, mold release-, slip- and anti-blocking agent.
Octadecanamide is used in appliances, personal safety/protection equipment, building & construction, electrical market, electronics/computer, fiber, textile and carpets.
Octadecanamide is also applicable in packaging, household, products/consumer goods, wiring & cables, pipe, hoses, fittings, urban equipment and road.
Octadecanamide is HALAL and JHOSPA certified.
Octadecanamide is a hard and brittle white high melting point wax, its industrial products are slightly yellow ne particles, non-toxic, no side eects on humans, insoluble in most solvents at room temperature, stable to acids and bases, and aqueous media, soluble in hot chlorinated hydrocarbons and aromatic hydrocarbons solvents, Octadecanamide’s powder slippery feeling strong, above 80 ℃ to water with wettability of Octadecanamide.
Octadecanamide is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 1 000 to < 10 000 tonnes per annum.
Octadecanamide is used by consumers, in articles, by professional workers (widespread uses), in formulation or repacking, at industrial sites and in manufacturing.
Octadecanamide can be added in the coating production to increase the uniform dispersion of pigment and ller,inprove the surface leveling property of baking paint,prevent the stripping o of paint lmand improve water-proof and acid-resistant and alkaliresistant property.
In nitrocellulose lacquers,Ethylene bis stearamide (EBS) can bring about the atting action.
In synthetic ber industry, Octadecanamide can improve the heat-resistant, weather-resistant property of polyester and polyamide and bring about certain antistatic eects.
Octadecanamide is used in the spinning of antistatic nylon ber as additive and also is able to reduce the breaking of yarn.
Octadecanamide has excellent colour and colour stability and special property showing the low viscosity in molten form under high temperature.
Octadecanamide is a stable high melting compound.
Octadecanamide's melting point is signicantly higher than that of a comparable monomer.
In rubber manufacturing, Octadecanamide is used as a lubricant and processing aid to improve the performance and durability of rubber products.
Octadecanamide reduces the viscosity of rubber mixtures, making them easier to shape and mold.
Octadecanamide provides a smooth, glossy finish to rubber goods such as tires, seals, and gaskets.
Octadecanamide prevents rubber sheets from sticking together during storage and processing.
Octadecanamide is sometimes used in cosmetic and personal care formulations, especially in lipsticks, creams, and lotions, due to its emollient, structuring, and moisture-resistant properties.
Octadecanamide adds body and texture to lotions, creams, and balms.
Helps lock in moisture and improves the longevity of cosmetic formulations.
Octadecanamide gives skincare and makeup products a smooth, luxurious feel.
Octadecanamide is a bio-based EBS wax (ethylene-bis-Octadecanamide) supplied as white fine granules.
Octadecanamide is used as a processing aid, dispersing agent and release agent.
The wax additive has high melting point and temperature stability.
This makes Octadecanamide particularly suitable for the bitumen industry.
Octadecanamide is paraffin-free.The wax provides optimized bitumen stability and is suitable for polymer-stabilized bitumens.
Due to Octadecanamide's high melting point, the additive offers good thermal stability.
Octadecanamide is used to lower the processing temperature and viscosity.
As a degassing agent Octadecanamide is used in powder coatings.
In PVC applications and masterbatches the Octadecanamide is used as an internal and external lubricant.
Octadecanamide is also used in metal processing, lubricants, and other industrial applications.
Helps in casting and molding metal parts, reducing sticking to molds.
Improves machining efficiency by providing lubrication in cutting, drilling, and grinding processes.
Octadecanamide prevents powders from clumping, improving their flowability and storage stability.
Octadecanamide, is available in powder, granule, or flake form.
In the production of ABS, PC, PP, PVC, and PS products, Octadecanamide serves as an internal/external lubricant during injection molding, aiding in the easy separation of products from molds.
Additionally, Octadecanamide acts as an antiblocking agent in the production of various polymer films like PVC and BOPP, providing a glossy finish to finished products.
Octadecanamide functions as an external lubricant that reduces adhesion of the polymer melt to processing equipment parts, acting as a slip agent.
Octadecanamide prevents the formation of air bubbles, thereby reducing the risk of the fish-eye effect.
Octadecanamide can also act as a color pigment dispersant in the production of polymer color concentrates.
Octadecanamide consists mainly of stearamide (C18H37NO), which is an amide of stearic acid (C18H36O2).
Octadecanamide is typically a white, odorless, and waxy solid that is insoluble in water but can be dispersed in organic solvents, oils, and molten polymers.
Octadecanamide is also used in paints, coatings, and printing inks as an anti-blocking, matting, and slip-enhancing additive.
Prevents freshly coated surfaces from sticking together during drying.
Octadecanamide reduces gloss in coatings to create a satin or matte finish.
Enhances the durability of paints and coatings by making surfaces more resistant to scratches, scuffs, and wear.
Octadecanamide is a synthetic was with a common chemical name, N, N’-Ethylene-Bis-Stearmide.
Octadecanamide has excellent colour and colour stability and special property showing the low viscosity in molten form under high temperature.
Octadecanamide is a synthetic wax that has fatty amide groups that can interact with the surface of a variety of nanoparticles.
Octadecanamide can be used for a wide range of applications such as lubricants, activators and dispersing agents that reduce the friction in the system and increase the rate of processing.
Octadecanamide is an organic compound with the formula (CH2NHC(O)C17H35)2.
Octadecanamide is a waxy white solid and is also found as powder or beads that is widely used as a form release agent.
Octadecanamide is derived from the reaction of ethylenediamine and stearic acid.
Octadecanamide is a white solid of low toxicity that provides a slippery coating for a variety of applications.
Octadecanamide is a synthetic wax used as a dispersing agent or internal/external lubricant for benets in plastic applications to facilitate and stabilize the dispersion of solid compounding materials to enhance processability, to decrease friction and abrasion of the polymer surface, and to contribute color stability and polymer degradation.
Octadecanamide is also used in process industries as release agent and antistatic agent for the production of thermoplastics,and wiring.
Octadecanamide is used in powder metallurgy.
One of the major applications of Octadecanamide is in the plastics industry, where it functions as an anti-blocking agent, slip agent, and lubricant in polymer formulations.
In plastic films and packaging materials, Octadecanamide prevents layers from sticking together, improving handling and processing efficiency.
Octadecanamide reduces surface friction, making plastic films smoother and easier to separate.
In injection molding and extrusion processes, Octadecanamide helps prevent plastic parts from sticking to molds, facilitating easy removal.
Octadecanamide enhances the flowability of polymers by reducing internal friction, making it easier to manufacture thin films, sheets, and molded products.
Octadecanamide can also be an additive in paint and a solvent in paint coating.
Octadecanamide is synthetic wax that is widely used as a release agent, antistatic agent, and antifoaming agent.
Octadecanamide acts as a dispersing agent or internal/external lubricant in plastic applications to facilitate and stabilize the dispersion of solid compounding materials to enhance processability, to decrease friction and abrasion of the polymer surface, and to contribute color stability and polymer degradation.
Octadecanamide also nds use in adhesives and powder metallurgy.
Octadecanamide is oered as a vegetable- or tallow-based grade.
The primary use for Ethylene bis stearamide (EBS) is in the manufacture of plastics, where it has multiple functions.
Octadecanamide is also suitable for adhesives and sealants as an anti-block and slip agent.
Octadecanamide is an organic compound otherwise called EBS.
Octadecanamide is derived from the reaction of ethylenediamine and stearin.
Octadecanamide is a waxy white solid that is also found in powder or bead form.
Octadecanamide is a versatile, wax-like compound that plays a crucial role in plastics, rubber, coatings, cosmetics, and industrial applications.
Octadecanamide's anti-blocking, lubricating, and slip-enhancing properties make it essential for improving material performance, surface finish, and process efficiency.
Due to its biodegradability and generally safe handling characteristics, Octadecanamide is widely used across multiple industries.
However, proper safety precautions should be taken when handling powdered forms to avoid inhalation risks.
With its broad range of applications and minimal environmental impact, Octadecanamide remains a valuable and widely used material in manufacturing and consumer products.
Market Overview of Octadecanamide:
The global amide wax market—which includes Octadecanamide among other fatty amide waxes—is estimated at around USD 826.78 million in 2024 and is projected to grow to approximately USD 1,095.09 million by 2030, achieving a compound annual growth rate (CAGR) of about 4.79 % over that period.
Within the broader amide wax sector, Octadecanamide holds an important niche as a slip, anti-blocking, and mold release additive in plastics, films, coatings, inks, and rubber compounds.
The slip additives market (in which fatty amides like stearamide are a key subsegment) is forecast to grow strongly, with fatty amides expected to maintain one of the highest growth rates among slip additive types, driven by the ongoing expansion of plastic packaging, film, and polymer processing.
A more specific analog, ethylene bis stearamide (EBS)—a related amide wax product—is often used in similar functional roles (nucleating agent, lubricant, anti-blocking agent).
The EBS market was valued at about USD 367.4 million in 2023 and is projected to reach USD 610 million by 2033, at a CAGR of ~5.2 %.
Some reports estimate EBS market valuations ranging higher (e.g. ~USD 1,260 million in 2021 with growth toward 1,861 million by 2029) depending on inclusion of derivative and application segments.
Geographically, Asia-Pacific is expected to lead growth in demand for stearamide and amide waxes, fueled by rapid industrialization, increasing plastic and packaging production, and growth in coatings, rubber, and polymer industries in countries such as China and India.
The region’s low-cost manufacturing base also supports supply expansion.
The Europe EBS/amide wax market is projected to grow from around USD 76 million in 2023 to USD 124.5 million by 2034, at ~4.7 % CAGR.
Key drivers include the rising demand for high-performance plastic films, coatings, and packaging, where slip, anti-block, and release properties are essential.
The shift toward thinner films, higher-speed production, and more demanding surface finishes also enhances the need for effective additives like stearamide.
Meanwhile, challenges include regulatory scrutiny over additives, pressure to develop more sustainable/biobased materials, and competition from alternative slip/anti-block agents (e.g. silicones, fluoropolymers).
In summary, the market for Octadecanamide and related fatty amide waxes is poised for steady expansion over the coming decade, supported by growth in plastics, packaging, coatings, and advanced polymer processing, with particularly strong potential in Asia-Pacific markets.
Uses of Octadecanamide:
Octadecanamide is a bis-amide polymer additive that lowers the temperature at which the asphalt softens.
Octadecanamide is used as processing aid for resins and polymers and as defoaming agent.
Octadecanamide is traditionally used as lubricant and binder for cold compaction of powdered metal parts.
Octadecanamide is a bis-amide polymer additive that lowers the temperature at which the asphalt softens.
Octadecanamide is a widely used lubricant, high melting wax and white/yellow liquid.
Octadecanamide has good compatibility applied in most of the plastics with the function of lubricating, dispersing, fusing, breaking, smoothing, anti-stick and anti-static.
Octadecanamide has excellent connectivity and dispersion on pigments and buffers.
Octadecanamide is used as processing aid for resins and polymers and as defoaming agent.
Octadecanamide atomized is traditionally used as lubricant and binder for cold compaction of powdered metal parts.
Octadecanamide is used as a processing aid for resins and polymers and as a defoaming agent.
Octadecanamide beaded is an effective lubricant, processing aid, slip additive and pigment dispersant aid for most polymers.
Octadecanamide can be used to improve the dispersion of halloysite nanotube into a polylactic acid matrix, which can be potentially used as biodegradable plastic.
Octadecanamide may also be used as a lubricant to improve the strength of high density polyethylene (HDPE)/wood composites.
Octadecanamide is an ethylenebisstearamide, specifically developed to afford low, consistent viscosities and superior cost performance in paper pulp defoamer applications.
Octadecanamide is used as lubricant with good inner or outer lubricant action and has good coordination when used together with other lubricants as high grade alcohols,aliphatic acid esters,calcium stearate and paran.
In the processing of ABS, bAS, hard PVC, polyformaldehyde, polycarbonate, polyurethane and phenolformaldehyde resins, Octadecanamide is used as lubricant demoulding agent with a quantity of 0.5~1.5 %.
Octadecanamide can be used as nucleation transparency agent to reduce the nucleating time in compounds such as polyolens,polyformaldehyde and polyamide, promote the structure of resin to become ne, thus improve the mechanical property and transparency of the products.
Octadecanamide can also be used as processing auxiliary of rubber.
Besides the lubricant demoulding property and modifying performance of ller surface, Octadecanamide can raise the surface neness of rubber pipes and rubber plates to act as rubber surface polishing agent.
Octadecanamide improves the kneading, processing and vulcanization performance of rubber grains in the processing of ouro-rubber.
Octadecanamide is a synthetic wax used as a dispersing agent or internal/external lubricant for benefits in plastic applications to facilitate and stabilize the dispersion of solid compounding materials to enhance processability, to decrease friction and abrasion of the polymer surface, and to contribute color stability and polymer degradation.
Octadecanamide is also used in process industries as release agent and antistatic agent for the production of thermoplastics,and wiring.
Octadecanamide is used in powder metallurgy.
Octadecanamide is a synthetic wax that has fatty amide groups that can interact with the surface of a variety of nanoparticles.
Octadecanamide can be used for a wide range of applications such as lubricants, activators and dispersing agents that reduce the friction in the system and increase the rate of processing.
Octadecanamide can be used to improve the dispersion of halloysite nanotube into a polylactic acid matrix, which can be potentially used as biodegradable plastic.
Octadecanamide may also be used as a lubricant to improve the strength of high density polyethylene (HDPE)/wood composites.
Octadecanamide acts as both an internal and external lubricant to enhance malleability of the PVC resin.
Octadecanamide will inherently lower the viscosity of the polymer resin and can decrease friction and abrasion of the polymer surface.
Octadecanamide is also a dispersal agent and helps contribute to color uniformity and stability of the resulting extruded PVC product.
Adding Octadecanamide to your thermoforming process will increase productivity by reducing shear stress.
The overall product has a high gloss nish, smooth surface and increased tensile strength.
Octadecanamide is not just for PVC thermoforming, it is suitable as an additive for nearly any thermoplastic manipulation with benets similar to those described above for the PVC process.
Octadecanamide can be used with ABS, polystyrene, polyethylene, polypropylene and more.
In plastic masterbatch applications Octadecanamide reduces the amount of resin/binder necessary which translates to cost savings.
Octadecanamide will also help with pigment dispersal and give the nished product a more vibrant glossy nish.
Octadecanamide is a synthetic substance that has a smooth texture.
Octadecanamide is available in white beads that have no distinguishable scent.
This non-toxic substance is soluble in chlorinated and aromatic solvents.
In a general solvent under normal temperatures, Octadecanamide will dissolve.
Octadecanamide is used in products across many industries because of its high-temperature lubrication and lowtemperature anti-stick and surface-smoothing properties.
Plastics and Polymers:
Functions as a slip agent to reduce surface friction in polyethylene (PE), polypropylene (PP), PVC, and other thermoplastics.
Octadecanamide acts as an anti-blocking agent, preventing plastic films or sheets from sticking together during production and storage.
Octadecanamide improves flow, release, and processing in extrusion, injection molding, and film production.
Rubber Industry:
Octadecanamide is used as a lubricant and processing aid in rubber compounding.
Octadecanamide helps in mold release, reduces tackiness, and enhances surface finish of rubber goods.
Coatings, Paints, and Inks:
Octadecanamide provides slip, scuff resistance, and anti-blocking properties in coatings and printing inks.
Octadecanamide improves dispersion of pigments and contributes to smoothness and gloss.
Powder Metallurgy and Metal Processing:
Octadecanamide serves as a die lubricant in powder metallurgy, reducing friction during compaction and improving part release.
Octadecanamide helps minimize tool wear and energy consumption during metal forming.
Cosmetics and Personal Care:
Functions as a thickener, binder, and lubricant in creams, lotions, and sticks.
Contributes to texture, smoothness, and stability of formulations.
Other Applications:
Octadecanamide is used in textiles as a softening or anti-static agent.
Octadecanamide plays a role in adhesives and sealants to improve processability and reduce tack.
Applied as a mold release agent in various specialty manufacturing sectors.
Benefits of Octadecanamide:
Octadecanamide provides excellent slip and lubricity, which reduces friction and improves surface smoothness in plastics and coatings.
Octadecanamide offers strong anti-blocking properties, which prevent plastic films and sheets from sticking together.
Octadecanamide improves processing efficiency by acting as a mold release agent and reducing energy consumption during extrusion, molding, and compaction.
Manufacturers benefit from the thermal stability and chemical inertness of Octadecanamide, which ensure consistent performance in high-temperature and demanding applications.
The cosmetic and personal care industry values Octadecanamide for enhancing texture, gloss, and stability in formulations.
The rubber industry benefits from reduced tackiness and improved mold release provided by Octadecanamide.
Octadecanamide supports pigment dispersion and surface quality, which result in improved gloss, smoothness, and durability of inks and coatings.
Industries prefer Octadecanamide because it is non-toxic, safe for handling, and compatible with a wide range of polymers and oils.
Production of Octadecanamide:
Octadecanamide is produced industrially through the amidation of stearic acid, a saturated fatty acid commonly derived from natural fats and oils, with ammonia or amines under controlled conditions.
In this process, the carboxyl group of stearic acid reacts to form an amide bond, generating stearamide as a waxy, solid end product.
Manufacturers typically employ elevated temperatures and catalytic systems to accelerate the amidation reaction and improve yield, while alternative transamidation techniques may also be used depending on raw material availability and desired purity levels.
Once the crude product is obtained, Octadecanamide is purified by steps such as filtration, washing, and recrystallization, which help to remove residual fatty acids, catalysts, or by-products.
The purified wax is then processed into flakes, beads, or powdered forms that facilitate easy handling and uniform blending into polymer, coating, or cosmetic formulations.
Industrial production facilities maintain strict quality control, monitoring parameters such as melting point, particle size distribution, and moisture content to ensure performance consistency across applications.
In recent years, producers have also begun adopting greener production strategies, including the use of renewable vegetable-based stearic acid and more energy-efficient reaction conditions, aligning the manufacturing of Octadecanamide with sustainability goals while meeting the growing global demand from plastics, rubber, coatings, and personal care industries.
History of Octadecanamide:
The history of Octadecanamide is rooted in the early industrial use of fatty acids and their derivatives, which began gaining importance in the late 19th and early 20th centuries as by-products of the soap and candle-making industries.
Stearic acid, the parent compound of stearamide, was one of the first fatty acids to be produced on a large scale from animal fats and vegetable oils, and chemists soon discovered that its conversion to amides produced waxy solids with unique lubricating and anti-blocking properties.
By the mid-20th century, as the plastics and polymer industries expanded rapidly, demand for processing aids that could improve mold release, reduce friction, and enhance surface quality led to the commercial development of Octadecanamide.
Octadecanamide's adoption grew quickly in polyethylene and polypropylene film production, where it served as a reliable slip and anti-blocking agent, helping manufacturers achieve higher processing speeds and better product performance.
At the same time, the rubber, coatings, and ink industries began incorporating Octadecanamide to improve dispersion, reduce tackiness, and provide smoother finishes.
Over the decades, improvements in production methods—such as more efficient amidation reactions, better purification techniques, and the shift from animal-derived to plant-based stearic acid sources—made Octadecanamide more consistent and sustainable.
Today, Octadecanamide remains an important processing additive in plastics, coatings, rubber, and cosmetics, valued for its balance of performance, safety, and compatibility, and its history reflects the broader evolution of fatty acid chemistry from traditional soap-making into advanced materials science.
Handling and Storage of Octadecanamide:
Handling:
Avoid creating dust during processing.
Handle in well-ventilated areas to prevent inhalation of fine particles.
Prevent contact with eyes and prolonged skin exposure.
Wash hands after handling.
Storage:
Store in a cool, dry, well-ventilated place, away from heat sources and open flames.
Keep containers tightly closed to avoid moisture uptake.
Store away from strong oxidizing agents.
Stability and Reactivity of Octadecanamide:
Stability:
Octadecanamide is stable under normal temperatures and storage conditions.
Conditions to Avoid:
Excessive heat, open flames, and prolonged exposure to strong oxidizers.
Incompatible Materials:
Strong oxidizing agents, strong acids, and bases may cause decomposition.
Hazardous Decomposition Products:
Carbon oxides (CO, CO₂), nitrogen oxides (NOₓ), and irritating fumes may be released if burned.
First Aid Measures of Octadecanamide:
Inhalation:
Move the exposed person to fresh air.
Seek medical attention if respiratory irritation develops.
Skin Contact:
Wash with soap and water.
Remove contaminated clothing.
Get medical advice if irritation persists.
Eye Contact:
Rinse cautiously with water for several minutes.
Remove contact lenses if present and easy to do.
Continue rinsing and seek medical attention if irritation continues.
Ingestion:
Rinse mouth with water.
Do not induce vomiting.
Seek medical attention if large amounts are ingested or if discomfort occurs.
Firefighting Measures of Octadecanamide:
Suitable Extinguishing Media:
Use water spray, dry chemical, carbon dioxide (CO₂), or foam.
Unsuitable Media:
Direct, high-pressure water jets (may spread material).
Fire/Explosion Hazards:
Dust may form combustible mixtures in air under certain conditions.
Protective Equipment:
Firefighters should wear full protective gear and self-contained breathing apparatus (SCBA).
Accidental Release Measures of Octadecanamide:
Personal Precautions:
Avoid dust formation and inhalation.
Use protective equipment and ensure adequate ventilation.
Environmental Precautions:
Prevent material from entering waterways or drains in large quantities.
Cleanup Methods:
Sweep up or vacuum the spilled material carefully to minimize dust.
Collect into suitable, labeled containers for disposal.
Wash spill area with water and detergent.
Exposure Controls / Personal Protective Equipment of Octadecanamide:
Engineering Controls:
Use local exhaust ventilation or general room ventilation to minimize dust levels.
Respiratory Protection:
Not normally required under normal handling; if dust is generated, use a NIOSH-approved particulate respirator.
Eye Protection:
Safety goggles with side shields.
Skin Protection:
Protective gloves (nitrile, neoprene) and long-sleeved protective clothing.
Hygiene Measures:
Do not eat, drink, or smoke while handling.
Wash hands and face thoroughly after use.
Identifiers of Octadecanamide:
Common Name: Stearamide
CAS Number: 124-26-5
EC/EINECS Number: 204-693-2
PubChem CID: 31284
ChemSpider ID: 29001
ChEBI ID: CHEBI:85133
UNII (FDA): 07T7M0K24D
Beilstein Registry Number: 1727247
Molecular Formula: C₁₈H₃₇NO
Molecular Weight: 283.49 g/mol
InChI: InChI=1S/C18H37NO/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h2-17H2,1H3,(H2,19,20)
InChI Key: VZYCZTXNWZJUKS-UHFFFAOYSA-N
SMILES: CCCCCCCCCCCCCCCCC(=O)N
Chemical Class: Long-chain fatty acid amide (derivative of stearic acid)
Functional Groups: Amide group (–CONH₂) attached to a saturated C18 hydrocarbon chain
CAS Number: 124-26-5
EC/EINECS Number: 204-693-2
PubChem CID: 31284
ChemSpider ID: 29001
ChEBI ID: CHEBI:85133
UNII (FDA): 07T7M0K24D
Beilstein Registry Number: 1727247
RTECS Number: WN6000000
Merck Index Number: 8613
HS Code (for trade): 29241900 (Fatty acid amides; other)
Molecular Formula: C₁₈H₃₇NO
Molecular Weight: 283.49 g/mol
InChI: InChI=1S/C18H37NO/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20/h2-17H2,1H3,(H2,19,20)
InChI Key: VZYCZTXNWZJUKS-UHFFFAOYSA-N
SMILES (Canonical): CCCCCCCCCCCCCCCCC(=O)N
Chemical Class: Long-chain fatty acid amide (derivative of stearic acid)
Functional Groups: Primary amide (–CONH₂) attached to a saturated C18 hydrocarbon chain
Physical State: Waxy solid (white to off-white)
Properties of Octadecanamide:
Appearance: White to off-white waxy solid; may be supplied in powder, beads, or flakes
Odor: Faint fatty or wax-like odor
Molecular Formula: C₁₈H₃₇NO
Molecular Weight: 283.49 g/mol
Density: ~0.94–0.97 g/cm³ at 20 °C
Melting Point: 100–110 °C (typically ~102–106 °C)
Boiling Point: Decomposes before boiling; estimated >350 °C
Flash Point: >200 °C (closed cup)
Refractive Index: Not applicable (solid waxy material)
Viscosity: Not applicable in solid state; molten state has low viscosity
Solubility in Water: Insoluble
Solubility in Organic Solvents: Soluble in hot ethanol, methanol, acetone, benzene, and chloroform; slightly soluble in hydrocarbons
pH (aqueous dispersion): Neutral to slightly basic
Partition Coefficient (log P): High (>5), reflecting lipophilic nature
Hygroscopicity: Non-hygroscopic; stable under dry storage conditions
Stability: Stable under normal handling; resistant to hydrolysis and oxidation under ambient conditions
Decomposition Products (when heated strongly): Carbon oxides (CO, CO₂), nitrogen oxides (NOₓ), and irritating fumes
Melting point: 144-146 °C (lit.)
Boiling point: 646.41°C (rough estimate)
Density: 1 g/cm³ (20℃)
Bulk density: 210 kg/m³
Vapor pressure: 0.000023 Pa (20 °C)
Refractive index: 1.4670 (estimate)
Flash point: 280℃
Storage temp.: 2-8°C
Solubility: ketones, alcohols, and aromatic solvents at their boiling points: soluble
Form: beads
pKa: 15.53±0.46 (Predicted)
Water solubility: 0 ng/L at 25℃
InChIKey: RKISUIUJZGSLEV-UHFFFAOYSA-N
LogP: 13.98 at 25℃
Appearance: White to off-white, waxy crystalline solid; supplied as flakes, beads, or fine powder
Odor: Faint fatty, wax-like odor
Molecular Formula: C₁₈H₃₇NO
Molecular Weight: 283.49 g/mol
Chemical Class: Long-chain fatty acid primary amide (derived from stearic acid)
Functional Groups: –CONH₂ (primary amide) attached to a saturated C18 hydrocarbon chain
Density: 0.940–0.970 g/cm³ at 20 °C
Melting Point: 100–110 °C (typical range 102–106 °C)
Boiling Point: >350 °C (decomposes before true boiling)
Flash Point: ~>200 °C (closed cup)
Auto-ignition Temperature: ~400 °C
Refractive Index: Not applicable (solid)
Viscosity: Low when molten; solid is waxy and brittle
Surface Tension (molten): ~28–32 mN/m (estimated)
Solubility:
Water: Insoluble
Organic Solvents: Soluble in hot ethanol, methanol, acetone, chloroform, and benzene; slightly soluble in hydrocarbons (toluene, hexane).
Oil/Fats: Highly miscible with vegetable oils, mineral oils, and other fatty derivatives.
