Is rosin considered an organic compound, the chemical name of rosin

Rosin [1] is divided into three types: resin rosin, wood rosin, and oil slick rosin. Resin rosin, also known as relaxation incense, has a light color, a large acid value, and a high softening point; Wood rosin, also known as extracted rosin, is not as good as lipid rosin, dark in color, small in acid value, and easy to crystallize from some solvents; Slick rosin is also known as tall oil rosin. Rosin is two kinds of transparent and brittle solid natural resins, which are relatively complex mixtures, composed of resin acids (abietic acid, sea pine acid), a small amount of fatty acids, pine anhydride and neutrals.

The main component of rosin is resin acid, accounting for about 90%, the molecular formula is C19H29 Cooh, and the molecular weight. Resin acid is the most representative rosin acid, which is an unsaturated acid containing conjugated double bonds, strongly absorbing ultraviolet light, and can be automatically oxidized or induced after oxidation in the air. The appearance of rosin is pale yellow to light brown, with a glassy luster, with a turpentine odor and density.

The melting point is 110 1 35, the softening point (global method) is 72 76, and the boiling point is about 300 (. Glass transition temperature tg-30-38. Refractive index.

Flash point (open cup) 216. The ignition point is about 480 500. It is easy to oxidize in the air and darkens the color.

Soluble in ethanol, ether, acetone, toluene, carbon disulfide, dichloroethane, turpentine, petroleum ether, gasoline, oil and alkali solution. Reduced solubility in gasoline. Insoluble in cold water, slightly soluble in hot water.

Rosin has excellent properties such as viscosity, emulsification, softening, moisture-proof, anti-corrosion, insulation, etc., but the disadvantage is that the crystallization tendency in the solvent is large. The crystallinity of rosin is due to the difference in the solubility of the isomers in some solvents and the moisture in rosin. The moisture content of rosin is not crystallized; > easy to crystallize; > heavily crystallized.

Rosin crystallization is one of the important problems affecting the quality of rosin, which can cause flocculent or precipitate small particles in the adhesive, and also make the glue opaque. The crystallinity of rosin can be detected by the following method: take log rosin L fragments and 10ml of acetone and put them in a test tube, plug tightly, dissolve and stand still, if the crystallization is precipitated within 15min, the rosin is easy to crystallize; If it is precipitated after 2 hours, it indicates that this rosin is not easy to crystallize and can be used with confidence.

The quality of rosin depends on the color, acid value, softening point, transparency, etc. Generally, the lighter the color, the better the quality; The higher the rosin acid content, the greater the acid number and the higher the softening point.

The viscosity of rosin is very good, especially the pressure sensitivity, fast stickiness, and low temperature stickiness are very good, but the cohesion is poor. Because rosin contains double bonds and carboxyl groups, it has strong reactivity, so it is relatively unstable to light, heat and oxygen, showing poor aging resistance and poor weather resistance, and is prone to chalking and discoloration. Rosin is divided into 6 grades: special, one, two, three, four, and five.

Manufactured from pine resin, mingzi or wood pulp oil slick. It is a complex mixture consisting mainly of various diterpene resin acids, but also contains small amounts of fatty acids and neutrals, the amount of which varies depending on the rosin species.

Calculate! It is an organic substance in itself, and if it is not a single medium, it can be called a compound.

It is a mixture, without a specific chemical name, consisting of various diterpene resin acids, and also contains small amounts of fatty acids and neutrals, the amount of which varies according to the type of rosin. English name: colophony Latin name: colophonium

Rosin is a complex mixture consisting mainly of various diterpene resin acids, with small amounts of fatty acids and neutrals, the amount of which varies depending on the type of rosin. There is no chemical name.

Chemical name Resin Acid, molecular formula Cl9H29Cooh, relative molecular weight 302.

Structural formula: rosin is a mixture of various rosin acid isomers.

Using pine resin-rich pine as a raw material, the volatile aromatic terpene mixture obtained by different processing methods is called turpentine.

Rosin is a natural resin made from pine resin, a renewable pine forest resource.

In terms of chemical composition, pine resin is a solution of resin acid dissolved in terpenes. After the processing of pine resin, rosin (the main component is resinic acid) and turpentine (the main component is terpenes) can be obtained.

The annual production of rosin in the world is about 110,120 million tons. Turpentine production is about 250,000 tons.

Resin rosin is called resin that is harvested and harvested to collect pine resin and then process and refine it. It is characterized by continuous harvesting of pine trees, which is conducive to the full use of resources.

China is rich in pine resin resources and is the country with the largest output of resin rosin, and the output of resin rosin will remain above 350,000 tons for a long time. Therefore, it is estimated that in the next 20-30 years, the annual production of resin rosin in the world can still be maintained at 65-700,000 tons.

Wood rosin is a rosin made by chopping pine roots or tree trunks, leaching resin with solvents, and processing and refining them. Mainly produced in the United States, the raw material depends on the original pine forests in the southeast of the country, and now due to the reduction of forest resources, resulting in a shortage of wood rosin raw materials, the output has dropped from 10,000 tons in 1950 to 20,000 tons at present. The former Soviet Union also produced wood rosin, but production also dropped sharply due to the reduction of resources.

It is estimated that the world's current wood rosin production accounts for less than 5% of the total rosin.

Drip method and steam method In Chinese mainland, there are currently pine resin processing methods"Drip method"with"Steam method"Two categories. \"Drip method"The pine resin is packed in a distillation pot, the noodles are heated with direct fire, and the noodles are dripped into water to accelerate the vaporization of turpentine, and the turpentine is steamed out to obtain rosin. \"Drip method"Rosin barks again"Native law"Rosin, due to the simple equipment and process, the quality is unstable, the color is darker or the softening point is lower, but it is cheaper.

"Steam method"It uses superheated steam to produce rosin, with stable quality and high softening point, light color and less impurities, suitable for export"Drip method"The rosin should be high. Rosin of the same grade,"Drip method"with"Steam method"The quality is very different, and the merchant must distinguish clearly when purchasing.

Rosin is the evaporation product of pine resin, and the relationship between pine resin and rosin is "mother and child".

The high-viscosity secretion secreted by pine trees is distilled, and its volatile liquid is called rosin, and the remaining cooled solid is called rosin.

Rosin rosin.

Rosin refers to a type of pine resin that can be obtained from a variety of pine trees, particularly longleaf pine found in the southeastern United States, but also from pine-like species around the world. Cut the mouth of these trees so that a highly viscous secretion called pine resin is distilled and extracted. This volatile liquid is pine perfume; The remaining hard resin is called rosin.

Therefore, rosin and pine resin are the same substance.

Rosin is a type of pine resin, and rosin includes rosin, but rosin does not just refer to rosin, so it cannot be said that rosin and pine resin are the same substance.

Summary. Hello, I am glad to answer for you: industrial rosin is mainly used in paint, papermaking, rubber manufacturing, etc.

It is not very toxic to the human body, but because it often contains heavy metals such as lead and toxic compounds, as well as peroxides produced after oxidation, it will seriously affect human health. The traditional Chinese medicine rosin must go through strict quality testing, and the content of various toxic substances must meet certain standards before it can be used in medicine.

Hello, I am glad to answer for you: industrial rosin is mainly used in paint, papermaking, rubber manufacturing, etc. It is not very toxic to the human body, but because it often contains heavy metals such as lead and toxic compounds, as well as the poor peroxide produced after oxidizing the rolling belt, it will seriously affect the health of the human body.

The traditional Chinese medicine rosin must go through strict quality testing, and the content of various toxic substances must meet certain standards before it can be used in medicine.

Edible rosin (food-grade rosin glycerides) is made of esterification of purified rosin and edible glycerin, with transparent yellowish or light yellow particles, and small odor after dissolving. It meets the national standards GB10287-88 and GB2760-86 standards for food-grade rosin glycerides, which can be safely used in food. It has excellent emulsifying properties and viscosity enhancement properties, and can be used as a base agent for gum to give gum foaming, forming, chewiness resistance and better taste.

Appearance early change to take the description: edible rosin glycerides are light yellow transparent solids. Main Applications:

As a basic agent for gum, Luda gives gum foaming, plasticizing, chewing resistance and other functions, and is used for bubble gum, chewing gum, sugar-free chewing gum, with good taste and antioxidant properties, and remains soft. It can also be used as an emulsion stabilizer in beverages. In fact, the ** edible rosin ** is not much higher than the industrial rosin**, and even the ** of some high-purity rosin is higher than the edible rosin!