Manufacturer Good Price Oleic acid CAS:112-80-1
Description
Its iodine value is 89.9 and its acidic value is 198.6. It is insoluble in water, but soluble in alcohol, benzene, chloroform, ether and other volatile oil or fixed oil. Upon exposure to air, especially when containing some impurities, it is susceptible to oxidation with its color turning into yellow or brown, accompanied with rancid odor. At normal pressure, it will be subject to decomposition 80~100 °C. It is manufactured through the saponification and acidification of animal and vegetable oils. Oleic acid is an indispensable nutrient in animal food. Its lead salt, manganese salt, cobalt salt belong to paint driers; its copper salt can be used as fish net preservatives; its aluminum salt can be used as the water repellent agent of fabric as well as the thickener of some lubricants. When being epoxidized, oleic acid can produce epoxy oleate (plasticizer). Upon subjecting to oxidative cracking, it can generate azelaic acid (raw material of polyamide resin). It can be sealed. Store it on darkness.
Oleic acid exists in the animal and vegetable oil fat in large amount, being mainly in the form of glyceride. Some simple oleic esters can be applied to the textile, leather, cosmetics and pharmaceutical industries. The alkali metal salt of oleic acid can be dissolved in water, being one of the main components of soap. The lead, copper, calcium, mercury, zinc and other salts of oleic acid are soluble in water. It can be used as dry lubricants, paint drying agent and waterproofing agent.
Oleic acid mainly comes from nature. Oil fat containing high content of oleic acid, after subjecting to saponification and acidification separation, can produce oleic acid. Oleic acid has cis-isomers. Natural oleic acids are all cis-structure (trans-structure oleic acid can’t be absorbed by the human body) with certain effect of softening the blood vessels. It also plays an important role in the metabolism process of human and animal. However, the oleic acid synthesized by the human body itself can’t meet the needs, so we need food intake. Thus, consumption of edible oil of high oleic acid content is healthy.
Synonyms
9-cis-Octadecenoicacid;9-Octadecenoic acid, cis-;9Octadecenoicacid(9Z);Oleic acid, AR;OLEIC ACID, 90%, TECHNICALOLEIC ACID, 90%, TECHNICALOLEIC ACID, 90%, TECHNICALOLEIC ACID, 90%, TECHNICAL;Oleic acid CETEARYL ALCOHOL Manufacturer;Oleic Acid - CAS 112-80-1 - Calbiochem;OmniPur Oleic Acid
Applications of Oleic acid
Oleic acid, Oleic acid, also known as cis-9-octadecenoic acid, being of chemical properties of single unsaturated carboxylic acid and is widely presented in animal and vegetable oils. For example, olive oil contains about 82.6%; peanut oil contains 60.0%; sesame oil contains 47.4%; soybean oil contains 35.5%; sunflower seed oil contains 34.0%; cottonseed oil contains 33.0%; rapeseed oil contains 23.9%; safflower oil contains 18.7%; the content in the tea oil can be as high as 83%; in animal oil: lard oil contains about 51.5%; butter contains 46.5 %; whale oil contains 34.0%; cream oil contains 18.7%; Oleic acid has a stable (α-type) and unstable (β-type) two types. At low temperature, it can appear as crystal; at high temperature, it appears as colorless transparent oily liquid with lard odor. It has a relative molecular mass of 282.47, relative density of 0.8905 (20 ℃ liquid), M.p. of 16.3 ° C (α), 13.4 ° C (β), boiling point of 286 °C (13.3 103 Pa), 225 to 226 °C(1.33 103 Pa), 203 to 205 °C (0.677 103 Pa), and 170 to 175 °C (0.267 103 to 0.400 103 Pa), the Refractive index of 1.4582 and viscosity of 25.6 mPa • s (30 ° C).
It is insoluble in water, being soluble in benzene and chloroform. It is miscible with methanol, ethanol, ether and carbon tetrachloride. Because of containing double bond, it can be easily subject to air oxidation, thus producing bad smell with the color turning yellow. Upon using nitrogen oxides, nitric acid, mercurous nitrate and sulfurous acid for treatment, it can be converted to elaidic acid. It can be converted into stearic acid upon hydrogenation. Double bond is easy to react with halogen to produce halogen stearic acid. It can be obtained through the hydrolysis of olive oil and lard oil, followed by steam distillation and crystallization or extraction for separation. Oleic acid is an excellent solvent for other oils, fatty acids and oil-soluble substances. It can be used for the manufacture of soap, lubricants, flotation agents, such as ointment and oleate.
Uses:
GB 2760-96 defines it as a processing aid. It can be used as antifoaming agent, fragrance, binder, and a lubricant.
It can be used for the manufacture of soap, lubricants, flotation agents, ointment and oleate, being also an excellent solvent for fatty acids and oil-soluble substances.
It can be used for the precise polishing of gold, silver and other precious metals as well as polishing in electroplating industry.
It can be used as analysis reagents, solvents, lubricants and flotation agent, but also applied to the sugar processing industry
Oleic acid is an organic chemical raw material and can produce epoxidized oleic acid ester after epoxidation. It can be used as plastic plasticizer and for production of azelaic acid by oxidation. It is the raw material of polyamide resin. In addition, oleic acid can also be used as pesticide emulsifier, printing and dyeing auxiliaries, industrial solvents, metal mineral flotation agent, and release agent. Moreover, it can be used as the raw material for manufacture of carbon paper, round bead and typing wax paper. Various kinds of oleate products are also important derivatives of oleic acid. As a chemical reagent, it can be used as a chromatographic comparative sample and for biochemical research, detection of calcium, copper and magnesium, sulfur and other elements.
It can be applied to biochemical studies. It can activate the protein kinase C in the liver cells.
Benefits:
Oleic acid is a fatty acid found in animal and vegetable oils. Oleic acid is a mono-saturated fat generally believed to be good for one's health. Indeed, it is the chief fatty acid found in olive oil, comprising 55 to 85 percent of the important substance, which is commonly used in Mediterranean cuisine and has been hailed for its therapeutic characteristics since antiquity. Modern studies support the notion of the benefits of consuming olive oil, since evidence suggests that oleic acid helps lower levels of harmful low-density lipoproteins (LDLs) in the bloodstream, while leaving levels of beneficial high-density lipoproteins (HDLs) unchanged. Found also in significant quantities in canola, cod liver, coconut, soybean, and almond oils, oleic acid can be consumed from a variety of sources, some of which may soon contain even higher levels of the valuable fatty acid due to the efforts of genetic engineers.
Oleic acid occurs naturally in greater quantities than any other fatty acid. It is present as glycerides in most fats and oils. High concentrations of oleic acid can lower blood levels of cholesterol. It is used in the food industry to make synthetic butters and cheeses. It is also used to flavor baked goods, candy, ice cream, and sodas.
According to the American Diabetes Association, more than 25 million Americans have diabetes. In addition, 7 million have undiagnosed diabetes, and 79 million others have prediabetes. In a study published in February 2000 in the medical journal "QJM," researchers in Ireland found that diets rich in oleic acid improved the participants' fasting plasma glucose, insulin sensitivity and blood circulation. Lower fasting glucose and insulin levels, along with enhanced blood flow, suggest better diabetes control and less risk for other diseases. For millions of people with diagnosed diabetes and prediabetes, consuming foods rich in oleic acid may be beneficial in controlling the disease.
Specification of Oleic acid
|
ITEM |
Specification |
|
Condensation point，°C |
≤10 |
|
Acid value，mgKOH/g |
195-206 |
|
Saponification value，mgKOH/g |
196-207 |
|
Iodine valu，mgKOH/g |
90-100 |
|
Moisture |
≤0.3 |
|
C18:1 Content |
≥75 |
|
C18:2 Content |
≤13.5 |
Packing of Oleic acid
900kg/ibc Oleic acid
Storage should be at cool, dry and ventilate.
Q1: What is industrial oleic acid? What are its core physical and chemical properties?
Industrial oleic acid, chemically known as cis-9-octadecenoic acid, is one of the most commonly used unsaturated higher fatty acids refined from hydrolyzed natural animal and vegetable oils. At room temperature, it appears as a pale yellow to reddish-yellow transparent oily liquid with a slight characteristic grease odor. Core physical and chemical properties: It has good fluidity at normal temperature, is insoluble in water, and soluble in ethanol, ether, organic solvents and mineral oils. Its molecular structure contains unsaturated double bonds, endowing it with excellent reactivity, permeability, emulsifying performance and lubricity. It tends to solidify at low temperature and oxidize and discolor at high temperature. With active chemical properties, it can undergo saponification, esterification, hydrogenation, polymerization and other reactions, serving as a core basic raw material for oil chemical and fine chemical industries.
Q2: What are the CAS number, molecular formula, core parameters and executive standards of oleic acid?
CAS Number: 112-80-1; Molecular Formula: C₁₈H₃₄O₂; Molecular Weight: 282.46; Solidifying Point: ≤10℃; Iodine Value: 80–105g/100g; Acid Value: 195–205mg/g. mainstream industrial oleic acid on the market is divided into vegetable oleic acid and animal oleic acid, complying with general industrial standards. Core testing indicators include acid value, iodine value, solidifying point, color, moisture and saponification value. It is a universal raw material widely used in industrial lubrication, emulsification, cleaning and synthesis fields.
Q3: What are the core differences between vegetable oleic acid and animal oleic acid? How to select the appropriate type?
The two types differ significantly in raw material source, color, odor, stability and application scenarios, which can be selected according to actual demands: 1. Vegetable oleic acid: Refined from plant oils such as palm oil and soybean oil, it features light color, mild odor, low impurities, good oxidation resistance and stable performance without easy yellowing or deterioration. It is suitable for high-end scenarios including high-grade emulsifiers, cosmetic auxiliary materials, fine chemicals, textile printing and dyeing, and premium lubrication. 2. Animal oleic acid: Extracted from animal fats, it has a darker color, slightly heavier odor and higher solidifying point with higher cost performance, ideal for general industrial scenarios such as rubber additives, ordinary anti-rust oil, metal lubrication, plastic plasticizers and low-end detergent chemicals. Animal oleic acid is preferred for ordinary industrial demands, while vegetable oleic acid is the first choice for scenarios requiring strict color, odor and stability.
Q4: What grades does industrial oleic acid have? What are the applicable scenarios for each grade?
Industrial oleic acid is classified into three mainstream grades according to purity and refining degree with clear application divisions: 1. Standard industrial grade: With moderate purity and slightly yellow color, it is cost-effective and applied to rubber demolding, ordinary anti-rust oil, leather degreasing, low-end detergents and general chemical synthesis. 2. Refined hot-pressed grade: It has light color, low impurities and stable acid value, suitable for textile softeners, emulsifiers, metal cleaning agents, plastic additives and papermaking chemicals. 3. High-purity refined grade: Featuring water-white pale yellow appearance, low odor, low impurities and strong oxidation resistance, it is used for high-end daily chemical auxiliary materials, fine esterification synthesis, premium lubricants, biomedical intermediates and precision industrial additives.
Q5: How to simply judge the quality of industrial oleic acid?
Product quality can be quickly identified through intuitive observation, while accurate judgment requires third-party testing: 1. Color: High-quality oleic acid is clear and transparent without turbidity, blackening, delamination or precipitation; refined grade presents bright pale yellow. Inferior oleic acid is turbid and dark with suspended impurities. 2. Odor: Qualified product has a pure and mild grease smell without rancid or pungent odor, while deteriorated and inferior products have strong sour and rancid oil smell. 3. Fluidity: It flows evenly at room temperature without viscous agglomeration or floccules. 4. Low-temperature state: Qualified products only show slight turbidity and solidification at low temperature and quickly recover transparency after warming up, whereas inferior products are prone to severe agglomeration and delamination. Core testing indicators include acid value, iodine value, solidifying point, moisture and color.
Q6: Is low-temperature solidification and turbidity of oleic acid a quality problem?
This is not a quality problem but a normal physical property of oleic acid. As an unsaturated fatty acid, oleic acid has reduced solubility and increased viscosity at low temperatures, resulting in turbidity, solidification, delamination and whitening, which becomes more obvious as the temperature drops. Simply heat the environment to 20–30℃, let it stand for melting and stir slightly, and it will restore to a clear and transparent oily liquid. Its acid value, purity and service performance remain completely unchanged with no impact on industrial production.
Q7: What causes rancid odor of oleic acid?
Rancid odor is caused by chemical deterioration due to improper storage. Long-term open storage, high-temperature exposure, air oxidation, moisture ingress and expired storage will lead to oxidation and hydrolysis of the unsaturated double bonds in oleic acid, producing pungent rancid odor, deepened color, turbidity and precipitation. Deteriorated oleic acid has reduced activity and invalid indicators, with greatly weakened emulsifying, lubricating and synthetic properties, which cannot be used for production and must be scrapped.
Q8: What are the core industrial applications of industrial oleic acid?
Industrial oleic acid is a highly versatile fine chemical raw material, mainly applied in six core fields: 1. Emulsification and cleaning industry: Used to prepare Span, Tween, oleate soap, emulsifiers, metal degreasers and industrial detergents. 2. Metal processing industry: Applied in anti-rust oil, cutting fluid, grease, metal surface degreasing, anti-rust and lubricating auxiliaries. 3. Textile and leather industry: Served as textile softeners, levelers, leather degreasers, tanning auxiliaries and waterproof agents. 4. Rubber and plastic industry: Used as rubber release agents, softeners, plastic plasticizers, lubricants and antistatic auxiliaries. 5. Fine chemical industry: Raw material for esterification, saponification and hydrogenation reactions to synthesize various oleate esters and oleate chemical intermediates. 6. Other industries: Widely used in papermaking auxiliaries, coating dispersants, ink additives and biodiesel raw materials.
Q9: What is the core functional principle of oleic acid?
Oleic acid achieves multiple industrial functions relying on its molecular structure characteristics: 1. The long carbon chain structure provides excellent lubricating, anti-rust and hydrophobic properties, suitable for metal lubrication, rust prevention and waterproof scenarios. 2. With both hydrophilic carboxyl groups and lipophilic carbon chains, it has outstanding surface activity for emulsification, dispersion and decontamination, making it a core raw material for emulsification and cleaning. 3. The unsaturated double bonds have high activity and can participate in addition, esterification and hydrogenation reactions for modification and synthesis of various fine chemicals. 4. It features strong permeability, which can penetrate the material surface to improve softening, degreasing and leveling effects.
