γ-Valerolactone CAS 108-29-2
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γ-Valerolactone | GAMMA-VALEROLACTONE NATURAL
CAS 108-29-2 | C5H8O2 | 100.12
- Appearance: transparent liquid
- Purity: 99. 0%min
- Stock: In stock
- Sample: Available
- Zhishang Chemical: γ-Valerolactone Supplier & Manufacturer
Basic Info of γ-Valerolactone
| CAS No: | 108-29-2 |
| Name: | γ-Valerolactone |
| Formula: | C5H8O2 |
| Weight: | 100.12 |
| EINECS: | 203-569-5 |
| Other Names: | GAMMA-VALEROLACTONE NATURAL |
| Type: | Additives, Food Additive |
| Shelf Life: | 3 years |
| Brand Name: | Zhishang Chemical |
| Place of Origin: | China |
What is γ-Valerolactone?
γ-Valerolactone (GVL) is an environment-friendly organic solvent extensively used in natural synthesis and biorefining due to its high boiling point, flash point, and chemical security. Arise from the Mizoroki-Heck response carried out by Strappaveccia et al. utilizing GVL as a solvent confirmed that GVL is significantly a lot more effective than standard organic solvents. Various other traditional natural reactions, such as the Hiyama reaction, Catellani reaction, and Sonogashira-Hagihara reaction, have actually likewise shown high sensitivity in GVL solvents.
γ-Valerolactone not just has broad application potential customers as a renewable solvent, artificial additive, and intermediate in natural and pharmaceutical synthesis, however it is also a crucial prospective eco-friendly gas additive that can replace the ethanol component in gasoline-ethanol blends, boosting gas burning performance.
Prep work Method
- Preparation of Nano-TiO2 Catalyst: Commercial Degussa P25 nano-TiO2 particles were calcined at 500– 700 ℃ for 6– 60 hours to acquire anatase and rutile mixed-crystal nanoparticles; or industrial Degussa P25 nano-TiO2 bits were calcined at 750– 1000 ℃ for 6– 60 hours to get pure rutile nanoparticles.
- Include 0.25-1.25 g of stimulant per 100-500 ml of response option. Add the nano-TiO2 catalyst prepared in step 1) to the isopropanol levulinic acid reaction remedy, where the focus of levulinic acid in the isopropanol levulinic acid reaction remedy is 0.5 mol/L. Simultaneously, include a rare-earth element source solution at 0.5-1.0 wt% of the stimulant amount. Under magnetic mixing, evacuate the system or introduce argon gas to get rid of oxygen.
- After eliminating oxygen, stop discharge or argon gas intro, turn on the ultraviolet light, regulate the response temperature level at 15-60 ℃, and react for 10-36 hours. Different the driver by static rainfall, and after that get the item γ-Valerolactone by vacuum cleaner purification. The noble metal source solution is an isopropanol service of chloroplatinic acid or palladium chloride.
γ-Valerolactone Uses
γ-Valerolactone, abbreviated as GVL, is a lactone-type natural compound that exists as an anemic liquid at room temperature level and stress, in the form of a racemic mixture. γ-Valerolactone is conveniently available from biomass such as cellulose and is a possible gas and eco-friendly solvent. It can also work as a forerunner for the production of γ-hydroxyvalerate (GHV).
γ-Valerolactone, as a polar aprotic solvent for dissolving and depolymerizing lignin, can boost the ether bond task of lignin under mild conditions, speeding up the depolymerization rate. The reduction in the activation energy of the response in the GVL/H2O solvent system leads to an enhanced price of cellulase hydrolysis and xylose dehydration.
Fang et al. discovered that in the fractionation and separation of lignocellulose biomass, GVL/H2O helps with the breaking of β-O-4 aromatic ether bonds in lignin, while the water material influences lignin elimination. The ideal water web content in the GVL/H2O solvent system (35%– 50%) is most for lignin removal, producing cellulose pulp with a pureness of as much as 90.3%.
In addition, incorporating the research of Luterbacher et al., X-ray diffraction of the pure cellulose strong acquired after γ-Valerolactone treatment revealed an increase in the extremely energetic amorphous cellulose portion, showing that the existence of γ-Valerolactone might play a role in interrupting the crystallinity of cellulose.
γ-Valerolactone, as a reaction tool, not only gives a website for chemical reactions yet likewise acts as a medium for electron transfer during the response, changing the security of the protonated change state and thus impacting reaction kinetics. On the other hand, GVL boosts the saccharification rate by dissolving lignin and raising the task of acid protons, thereby increasing the price of acid-catalyzed responses with its result on the stimulant.
γ-Valerolactone is made use of as a solvent in the preparation of sugars: in the acid-catalyzed saccharification procedure, the γ-Valerolactone/ water supply enhanced sugar yield by almost 80%, two times that of the same system making use of water.
The price constant for the hydrolysis of cellobiose to sugar in the GVL/water system is 30 times that in distilled water, and the obvious activation energy is likewise lowered by concerning one-third. Luterbacher et al. reported a pilot-scale manufacturing of soluble carbs utilizing a mix of biomass-derived γ-valerolactone, water, and weaken acid as solvents.
Specifications & Packaging
Specification
| Item | Specification |
| Product Name | γ-Valerolactone |
| CAS No. | 108-29-2 |
| Appearance | transparent liquid |
| Shelf Life | 3 years |
| Packing | 1kg/bag,25kg/bag or as your requirements |
Product Nature
| Melting point | −31 °C |
| Boiling point | 207-208 °C |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | Soluble in chloroform and methanol |
| form | liquid |
| color | transparent |
| PH | 7 (H2O, 20℃) |
| Odor | herbaceous, sweet, tobacco, woody |
| biological source | synthetic |
| Water Solubility | MISCIBLE |
Product Packaging
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Application of γ-Valerolactone
γ-Valerolactone, generally known as octadecaldehyde or coconut aldehyde, is a pale yellow or anemic oily liquid. When focused, it has a coconut scent; when weakened, it has an almond or peach bloom fragrance. γ-Valerolactone can be used in flavorings calling for an oily aroma and in several flavors, such as coconut and almond flavorings. γ-Valerolactone is a major lactone flavor representative utilized in food and premium cosmetics. Domestically and worldwide, it is generated making use of heptanal gotten from castor oil fracturing as a basic material.
This approach involves expensive basic materials, complex production procedures, and high expenses. With the growth of the petrochemical industry, the new route of synthesizing alkyl γ-lactones using olefins is ending up being significantly remarkable, possibly minimizing manufacturing prices and making it possible for domestic products to replace imported flavors. Saturated lactones are a really crucial class of food flavors, naturally occurring in different fruits, and are now extensively made use of in the formula of various beverages, baked products, and various other food flavors.
Gamma-lactones are a course of lactone compounds gotten by the lactoneation of gamma-hydroxycarboxylic acids. They are rich in velvety and fruity fragrances, characterized by long-lasting and mellow scents. γ-Valerolactone is a regular depictive compound of gamma-lactones, possessing a coconut aroma and an oily odor. γ-Valerolactone can be used in flavorings and spices needing an oily smell (such as coconut and almond flavors).
γ-Valerolactone is utilized as the primary flavoring agent in coconut flavors and is likewise used in blending flavors of lotion, almond, peach, cherry, nuts, and tropical fruits. The usage levels are: 55 mg/kg in baked products; 33 mg/kg in candies; 28 mg/kg in puddings; 15 mg/kg in eating gum tissue; 14 mg/kg in frozen desserts; and 11 mg/kg in soft drinks.
γ-Valerolactone can be used to formulate fruity beverage flavors, such as coconut and bitter almond flavorings, and is also made use of as a scent in high-end cosmetics. It is additionally a raw material for organic synthesis.
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γ-Valerolactone Supplier and Manufacturer
As a γ-Valerolactone supplier and manufacturer with a strict standard product quality system certificate, Zhishang Chemical has long been providing the best γ-Valerolactone raw materials to customers all over the world.
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