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Thymol powder, colorless crystal or colorless crystal powder, has pungent and herbal odor, similar to thymol aroma, molecular formula C10H14O, CAS 89-83-8, stable. Incompatible with strong oxidants, organic materials and strong bases. Slightly soluble in water, easily soluble in glacial acetic acid, paraffin oil, ethanol, ether, chloroform, ethyl acetate, carbon disulfide, olive oil and other organic solvents. It naturally exists in cheese, papaya fruit, black tea, green tea, thyme oil, oregano oil, clove basil oil. Thymol has a wide range of uses. It is a common edible flavor, preservative, fungicide and antioxidant. At the same time, it is also the primary raw material for the synthesis of many chemicals, such as the hydrogenation of thymol to menthol.
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Chemical Formula |
C10H14O |
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Exact Mass |
150 |
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Molecular Weight |
150 |
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m/z |
150 (100.0%), 151 (10.8%) |
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Elemental Analysis |
C, 79.96; H, 9.39; O, 10.65 |
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There are two methods of synthetic Thymol powder:
Method 1: the synthesis methods of thymol mainly include: (1) taking citronello as raw material, first catalyze the closed-loop formation of isohu menthol, and then catalyze the dehydrogenation to thymol. The process is simple, and the yield of thymol is high, but the preparation process of the dehydrogenation catalyst used is complex, and the service life of the catalyst is short; (2) α- Verbenone can be obtained by catalytic oxidation of pinene, and then thymol can be obtained by catalytic cracking. The yield of thymol synthesized by this method is low, and decahydronaphthalene or other non-polar large volume organic matter need to be used as solvent in the process. Although the solvent can be recycled, it still has certain pollution to the environment; (3) Thymol is prepared by alkylation of m-cresol, isopropanol and other substances that can provide isopropyl group under the action of catalyst. This method has a short process flow and has a certain industrial application prospect,
Method 2: the preparation method of thymol is as follows: after m-cresol and isopropanol are stirred evenly, Al Cu / HAP catalyst is added to the mixture of m-cresol and isopropanol, and then stirred evenly again to obtain the reaction material. The reaction material is reacted to obtain the target product thymol. The preparation method of the above Al Cu / HAP catalyst is as follows: dissolve Al (NO3) 3 · 9h2o and CuSO4 · 5H2O in dilute hydrochloric acid to obtain a mixed solution; Adding hydroxyapatite (HAP) to the above mixed solution to obtain a solid-liquid mixture; Add NaOH solution to the obtained solid-liquid mixture, stir it evenly, filter the above materials, wash the obtained filter residue with deionized water, dry it, and calcine it to obtain the catalyst Al Cu / HAP
Thymol powder, also known as 5-methyl-2-isopropylphenol, is a phenolic compound with a unique herbal aroma. The hydroxyl and isopropyl substituents in its molecular structure endow it with a strong pungent and musky aroma, making it an indispensable key raw material in the spice industry. From high-end perfume to daily care products, thymol, with its long-lasting fragrance retention, excellent stability and multi-functional chemical properties, has shown a wide range of application values in the fragrance industry.
Thymol is known as the "skeleton of fragrance" in the perfume industry, and its application has expanded from traditional fuqi fragrance to modern oriental and woody perfume:
Flavor construction: as the core component of Fuqi flavor, it cooperates with lavender oil, coumarin, oak moss, etc. to give perfume a strong herbal flavor and sense of hierarchy. For example, the amount of thymol in a classic male fragrance reaches 12%, which increases the persistence of middle note by 40%.
Fragrance retention technology: Thymol is encapsulated in β - cyclodextrin through microcapsule embedding technology, which extends the fragrance retention time of perfume to 24 hours, and reduces the aroma release rate by 30%.
Innovative application: In the marine perfume, thymol and ambergris are compounded to simulate the moist smell of seaweed, making perfume more natural. The sales of a new product exceeded 500000 bottles in the first year of listing.
2. Personal care essence
The application of thymol in daily chemical essence has expanded from basic flavor blending to functional essence development:
Antibacterial essence: A hand sanitizer essence with antibacterial effect was developed by mixing thymol with tea tree oil and eucalyptus leaf oil. The inhibition rate of Staphylococcus aureus was 99.9%, and the aroma acceptance was increased by 20%.
Anti dandruff essence: 0.5% thymol was added to the shampoo essence, which, together with zinc pyrithione (ZPT), improved the anti dandruff effect by 35%, and covered up the drug odor. The annual sales of a brand of anti dandruff shampoo reached 1 billion yuan.
Fragrance retention technology: Thymol is dispersed in silicone oil through nano emulsification technology, which extends the fragrance retention time of essence of shower gel to 8 hours, and reduces the skin residue to 0.1 mg/cm ², which meets the safety standard.
The application of thymol in food essence has expanded from traditional spices to health functional products:
Spice essence: simulate the spice of black pepper in the meat flavor essence, and the dosage of 0.1-0.3% can significantly improve the authenticity of the meat flavor. In a ham sausage essence, thymol and maltol cooperate to increase the meat flavor intensity by 50%.
Refreshing essence: It is compounded with menthol to develop an export flavor essence. The cool feeling lasts for 45 minutes without burning feeling. The annual output of a brand of sugar free chewing gum reaches 2 billion pieces.
Health function: thymol is added to essence of functional drink, which can delay oxidation and deterioration of essence by using its antioxidant property, so that the shelf life of the product can be extended to 18 months, and at the same time, the awareness of "health sense" of the drink can be improved.
4. Household cleaning products essence
The application of thymol in household fragrance essence has expanded from basic deodorization to antibacterial and acarid function:
Antibacterial essence: 0.2% thymol is added to the laundry detergent essence, and together with the surfactant, the sterilization rate reaches 99%, and the fragrance retention time of the fabric reaches 7 days. The market share of a brand of laundry detergent is increased to 25%.
Mite removing essence: a special essence for bed products is developed by mixing it with eucalyptus cerebrum. The mortality rate of mites in 24 hours at 1% concentration reaches 100%. The annual sales volume of a mite removing spray exceeds 5 million bottles.
Odor management: cover up the ammonia smell in the pet deodorant essence. The deodorization effect can be improved by 40% when the dosage is 0.5%, and the pet acceptance can reach more than 90%.
The application of thymol in the field of natural essence has promoted the green transformation of the fragrance industry:
Bio synthesis: By using genetically engineered yeast fermentation to produce thymol, the yield reaches 15 g/L, the purity is 99.5%, and the carbon emissions are reduced by 60% compared to chemical synthesis methods. A certain biotechnology company has achieved industrial production.
Natural combination: in cooperation with rosemary extract, limonene and other natural ingredients, it has developed an all natural essence, which is used in organic skin care products, making the product pass ECOCERT certification, and the annual sales of a brand of natural face cream has increased by 300%.
Sustainable packaging: after microencapsulation, thymol is embedded into a degradable film, so that essence can continue to release fragrance after packaging is abandoned, and extend the product life cycle. A packaging enterprise has applied for related patents.
2. Intelligent fragrance and emotion regulation
The application of thymol powder in the field of intelligent fragrances has opened up a new dimension in the fragrance industry:
Emotional Fragrance: Research has found that a concentration of 0.01 ppm of thymol can increase alpha brainwave activity, alleviate anxiety, and a certain intelligent aromatherapy machine adjusts its release amount through AI, reducing user stress levels by 25%.
Memory trigger: Adding thymol to elderly care fragrances and utilizing its association with childhood herbal fragrances to awaken long-term memory, a pilot project in a certain elderly care institution improved cognitive function scores by 15%.
Environmental adaptation: By using Internet of Things technology to monitor indoor temperature and humidity, the release of thymol is automatically adjusted to increase the matching degree between aroma intensity and environment by 40%. A certain smart home brand has launched related products.
The application of thymol in 3D printing fragrance has realized the precise control of essence:
Multi material printing: By combining thymol with polylactic acid (PLA), a 3D printable fragrance silk material has been developed. By adjusting the printing layer thickness to control the aroma release rate, a creative company has launched customized fragrance services.
Microfluidic technology: The microfluidic chip is used to print thymol and other spices layer by layer to achieve accurate control of the front, middle and base note of the fragrance. A laboratory sample increased the complexity score of perfume by 30%.
Skin adaptation: Obtain the user's facial contour through 3D scanning technology, and print out the fragrance facial mask that fits the face. The thymol concentration gradient design improves the aroma absorption efficiency by 50%. A beauty brand has entered the clinical trial stage.
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