What is stearic acid and what are its uses

What is stearic acid for? Stearic acid is often used in the plastic processing industry, which can play a role as a heat stabilizing agent in environmental protection. Stearic acid is also widely used in the rubber industry as a film remover, plasticizer and softening and vulcanizing agent. In this cosmetics industry, stearic acid is used as viscosity regulator, stabilizer and sunscreen. In addition, it is used in textile, medicine, leather making and other industries. Calcium stearate is a new type of plastic additive. Because of its own properties, it is used in many fields. What are the raw materials for synthesizing calcium chloride? The synthesis of calcium stearate is divided into wet method and dry method. The raw materials of different production processes are also different. The wet synthesis of calcium stearate includes double decomposition method and saponification method. The double decomposition method takes stearic acid as the main raw material, melts at appropriate temperature, reacts with sodium hydroxide solution, and then the generated sodium stearate and soluble calcium salt (such as calcium chloride) undergo double decomposition reaction to produce calcium stearate precipitation; Saponification method is that soluble calcium salt reacts with sodium hydroxide to produce calcium hydroxide, and then saponification with stearic acid to produce calcium stearate. The dry method of stearic acid manufacturer is to directly react calcium oxide or calcium hydroxide with stearic acid under certain conditions to produce calcium stearate. At present, dry process is the mainstream process, which is environmentally friendly and convenient. Zinc stearate is commonly used in plastic processing industry. What is stearic acid used for? As an environment-friendly heat stabilizer, zinc stearate is not a dangerous product. This product is a white light powder with a specific gravity of 1.095. It is greasy, insoluble in water, and soluble in hot organic solvents such as ethanol, benzene, turpentine. In case of strong acid, it is decomposed into stearic acid and corresponding zinc salt. Zinc stearate has hygroscopicity.

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What is stearic acid? How to store it

What is stearic acid? How to store it? Stearic acid, namely octadecanoic acid, has a simple structural formula of CH3 (CH2) 16COOH, which is produced by hydrolysis of oil and fat and is mainly used to produce stearate. Each gram is dissolved in 21ml ethanol, 5ml benzene, 2ml chloroform or 6ml carbon tetrachloride. It exists in flue-cured tobacco, burley tobacco, oriental tobacco and smoke. It is the fatty acid that makes up stearin. Chinese alias: octadecanoic acid; Octadecylic acid; Order of the Secretary; Aliphatic acid; Hard wax acid; Stearic acid; Octadecylic acid; Octadecylic acid, ammonium octadecanoate; Stearic acid and ammonium stearate. Properties and stability of stearic acid: pure products are white soft tablets with luster. Slightly soluble in cold water, soluble in alcohol and acetone, easily soluble in benzene, chloroform, ether, carbon tetrachloride, carbon disulfide, amyl acetate and toluene, non-toxic. Is the hardening oil easy to be oxidized? Before hardening, there are unsaturated bonds in the molecules, which are easy to be oxidized by oxygen in the air and cause oil deterioration; It reacts with hydrogen and becomes hardened oil. Without unsaturated bond, it is not easy to be oxidized Hardening oil is relatively stable to heat and can be mixed with other waxes to improve solvent resistance, oil resistance, hardness and melting point. It is used in cosmetics, lubricating grease, leather shoe oil, crayons and pharmaceuticals. Storage method of stearic acid Type 200 stearic acid is packed in cardboard boxes. Type 800 stearic acid is packed in woven bags lined with plastic bags. Store in a cool and ventilated place. It can be packed in cardboard boxes or woven bags lined with plastic bags. The net weight of each box (bag) is 25kg or 50kg. Store in a cool, dry and ventilated place, and keep away from fire sources and oxidants. Store and transport according to general chemical regulations. Physical property data of stearic acid, property: white waxy transparent solid or yellowish waxy solid. It can be dispersed into powder with slight smell of butter. Relative density (g/mL, 20/4 ℃): 0.9408; Relative vapor density (g/mL, air=1): not determined; Melting point (oC): 67~69; Boiling point (oC, normal pressure): 183-184 (133.3pa); Boiling point (oC, 5.2kPa): 360; Refractive index (n20D): 1.455; Flash point (oC):>110 Gas phase standard combustion heat (enthalpy) (kJ · mol-1): -11446.9; Gas phase standard claimed heat (enthalpy) (kJ · mol-1): -781.2; Standard combustion heat (enthalpy) of liquid phase (kJ · mol-1): - 11343.4; Liquid phase standard claimed heat (enthalpy) (kJ · mol-1): -884.7; Standard combustion heat (enthalpy) of crystalline phase (kJ · mol-1): - 11280.4; The claimed heat (enthalpy) of crystal phase standard (kJ · mol-1): -947.7; Critical pressure (KPa): logarithm value of oil-water (octanol/water) partition coefficient not determined: not determined; Upper explosive limit (%, V/V): not determined; Lower explosive limit (%, V/V): not determined; Solubility: insoluble in water, slightly soluble in cold ethanol, easily soluble when heated. Slightly soluble in acetone and benzene, easily soluble in ether, chloroform, hot ethanol, carbon tetrachloride and carbon disulfide. Stearic acid calculates chemical data. What is stearic acid and how to store it? Calculation reference value of drainage parameter (XlogP): 7.4; Number of hydrogen bond donors: 1; Number of hydrogen bond receptors: 2; Number of rotatable chemical bonds: 16; Number of tautomers: topological molecular polar surface area (TPSA): 37.3; Number of heavy atoms: 20; Surface charge: 0; Complexity: 202; Number of isotope atoms: 0; Determine the quantity in the atomic structure: 0; Quantity in uncertain atomic structure: 0; Determine the quantity in the chemical bond structure: 0; Quantity in uncertain chemical bond structure: 0; Number of covalent bond units: 1 Many people ask where to buy where it is cost-effective? It is not enough to just look at the brand. It needs to be determined according to different groups. In terms of the products to be used, the manufacturers we should choose must be clear eyed and not blindly choose. What is stearic acid? How to store it? The properties of stearic acid, storage method and physical and chemical properties should be understood. If you have any questions, you can contact Keita customer service directly.

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What is stearic acid

What substance is stearic acid? Stearic acid is widely used in making cosmetics, plastics cold resistant plasticizer, release agent, stabilizer, surfactant, rubber vulcanization accelerator, waterproof agent, polishing agent, metal soap, metal mineral flotation agent, softener, pharmaceuticals and other organic chemicals. It can also be used as solvent of oil soluble pigment, wax pencil smoothing agent, wax paper polish agent, emulsifier of stearic acid glyceride, etc. The product is used in the food industry as a lubricant, defoamer and raw material for food additives such as glyceride stearate, sorbitol stearate and sucrose ester. It is used as raw material of auxiliary agent and daily chemical products. Stearic acid is widely used in the manufacture of PVC plastic pipes, plates, profiles and films. It is a PVC heat stabilizer with good lubricity and good light and heat stability. In plastic PVC pipes, stearic acid helps to prevent "coking" during processing. Adding stearic acid in PVC film processing is a good heat stabilizer and can prevent discoloration of finished film caused by exposure to sulfide. Most people don't know what oil crayons, hard candy and soap have in common. In fact, there is a link between them: they all contain a key component called stearic acid. Although you may not have noticed it before, once you start to look for it, you will find that many products used every day contain stearic acid, including candles, shaving cream, cosmetics and medicines. However, stearic acid is the leading role in cleaning products. Stearic acid is one of many fatty acids, which naturally exists in various plant and animal derivatives. Stearic acid is found in animal fats, cocoa butter and vegetable oils. When it is used in cosmetics, stearic acid acts as a thickener and curing agent. Stearic acid can also help soap shape - as well as candles, oil crayons, and hard candy. Shaping is not why stearic acid is added to soaps and bath products. As a surfactant, stearic acid has a strong cleaning ability. Surfactants are compounds that can help reduce the surface tension of water and enable it to mix with oil and dirt on the skin surface. Because of stearic acid, soap particles can attach to dirt and grease on the skin, making them loose and easily washed away by water. Stearic acid manufacturers mainly use the oil hydrolysis method for industrial production. Oil hydrolysis can be divided into three types according to pressure: 1. The hydrolysis period is long and takes tens of hours with the addition of catalyst under normal pressure. The conversion rate of fatty acids is low and the later separation effect is poor. 2. Medium pressure hydrolysis: no catalyst is needed, the hydrolysis cycle is about ten hours, and the conversion rate is basically 90%, which belongs to intermittent reaction and is gradually eliminated in China. 3. High pressure hydrolysis: no catalyst is needed, the hydrolysis cycle is about 5 hours, the conversion rate is basically 98-99%, and continuous production. The stearic acid produced has good color, high content and few impurities. At present, domestic projects are basically produced by this method. Some technologies are self-developed in China, and some technologies and equipment from abroad are introduced. The source of domestic stearic acid is basically made from imported palm oil through catalytic hydrogenation, high-pressure hydrolysis, fatty acid dehydrogenation, and vacuum distillation. Stearic acid exists in animal fats, oils and some vegetable oils in the form of glycerides. These oils are hydrolyzed to obtain stearic acid. Stearic acid is a kind of fatty acid that widely exists in nature. Almost all oils contain stearic acid in varying amounts. It has a high content in animal fat, such as 24% in butter, less in vegetable oil, 0.8% in tea oil, 6% in palm oil, but 34% in cocoa butter. The production methods of industrial stearic acid mainly include fractionation method and pressing method. A decomposing agent is added into the hardening oil, and then the crude fatty acid is obtained by hydrolysis, and then the finished product is obtained through water washing, distillation and decolorization. At the same time, the by-product is glycerin. Stearic acid can also be used as an emulsifier, which means that it can be combined with other substances (such as oil and water), which are usually separated and incompatible. Without stearic acid, your facial cleanser will not remain smooth and creamy, but will be separated like oil and vinegar in salad dressing. What substance is stearic acid? If you have any questions about this, you can directly contact Keita customer service.

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What kind of auxiliary agent is calcium stearate

What auxiliary agent is calcium stearate? What is calcium stearate? Stearic acid products produced in the chemical industry include glyceryl stearate, stearate, calcium stearate, etc. The processing and production of calcium stearate will cause environmental pollution. Calcium stearate manufacturers have been plagued by environmental pollution. How can calcium stearate manufacturers reduce the environmental pollution caused by calcium stearate production? The stearic acid manufacturer will share with you briefly. As a stabilizer, calcium stearate is applied to the stability of food packaging and medical appliances. It is a kind of additive. In addition, calcium stearate, composite stabilizer, calcium stearate, zinc stearate, etc. belong to stabilizers. Calcium stearate is mostly used as heat stabilizer of PVC, lubricant and release agent for plastic processing. In addition, it is also used in food packaging and medical appliances. The storage of calcium zinc stearate chemical products should be very careful. First, keep away from kindling. Second, the handling personnel should wear dust masks. Next, the stearic acid manufacturer will introduce the precautions for calcium zinc stearate storage in detail. Store in a cool and ventilated warehouse. Keep away from fire and heat source (spontaneous ignition point 900 ℃). It should be stored separately from oxidants and acids, and should not be stored together (acid will decompose into stearic acid and corresponding salts, causing deterioration). Secondly, calcium stearate manufacturers shall be equipped with corresponding types and quantities of fire-fighting equipment. The storage area shall be equipped with appropriate materials to contain the leakage. Use lined plastic bags for packaging and outer woven bags or gunny bags for packaging. The calcium zinc stearate manufacturer shall store it in a cool, dry and ventilated place. Tightly seal the package to prevent moisture. The storage temperature shall not be too high. It is recommended that operators wear self-priming filter type dust masks, chemical protective glasses, and explosion-proof ventilation systems and equipment to avoid dust generation;

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