Undecanal is additionally referred to as Undecyl aldehyde. Anemic to light yellow oily liquid. It has an oily odor and has an orange and also rose-like scent after dilution. Has a sweet preference. Occurs naturally in orange as well as lemon oils. The loved one molecular mass is 170.32. The relative density is 0.8251 (25 ° C). Melting point -4 ° C, boiling point 223 ° C, 120 ° C (2.666 × 103Pa), 117 ° C (2.400 × 103 Pa), 109 ～ 115 ° C (0.667 × 103Pa). Refractive index 1.4520. The flash point is 96 ° C. Insoluble in water and glycerin, soluble generally organic solvents such as ethanol and also propylene glycol.
It is unpredictable in both acidic and also alkaline media. Easy to polymerize in air. objectives: flavors. Prepare rose, tuberose, jasmine as well as various other flower-scented significances for cosmetics and soap significances; edible spices allowed my nation’s GB2760-1996 policies, and prepare lemon, orange, orange and also other fruit-scented essences for food.
-2 °C (lit.)
109-115 °C/5 mmHg (lit.)
0.825 g/mL at 25 °C (lit.)
5.94 (vs air)
38Pa at 20℃
Colorless to Light yellow
at 1.00 % in dipropylene glycol. waxy soapy floral aldehydic citrus green fatty fresh laundry
Soluble in dipropylene glycol, fixed oils, propylene glycol and water (14.27 mg/L at 25°C)
Undecanal is commonly utilized in fragrance formulas. A small amount (< 0.5%) is used for rose, tuberose, acacia, orange bloom, jasmine, iris as well as various other flower scents. It can also be utilized as a top note for citrus and also other fruity fragrances. Likewise used in dream flavors. It can be utilized in the preparation of lemon, white lemon, tangerine, orange, cucumber, honey, fresh, as well as numerous fruity substances and also gum flavors.
Undecanal is a food seasoning that is allowed to be made use of according to GB 2760– 1996. It is generally used to prepare citrus such as lemon, lemon, orange and cucumber, honey and gum tissue essence
Undecanal has a rose fragrance in a watered down state; a floral fragrance; a fruity as well as sweet orange fragrance, utilized as a flower essence pump modifier, made use of in cosmetics; in soap essence.
Application of Undecanal
1. Used in the synthesis of methyl nonacetaldehyde Methyl nonacetaldehyde is an important raw material for the preparation of modern fragrances. It has an aldehyde aroma accompanied by notes of ambergris, citrus and vanilla. Because of its strong aroma, good diffusivity and long-lasting fragrance, it is often used as the first fragrance preparation of aldehyde fragrance, and it can also be used in the preparation of flavors such as tobacco fragrance and amber fragrance. In addition, it can also be directly used as a raw material for cosmetics and food flavors. CN201810211803.X provides a synthetic method of methyl nonacetaldehyde.
Including (a) using Undecanal and formaldehyde as raw materials in the solvent methanol, using morpholine/acetic acid as a catalyst, wherein Undecanal is dropped into the reaction system in a dropwise manner, and reacted at 70-80°C to form methylene undecane Aldehyde; (b) with methylene undecanal as raw material, palladium/carbon as catalyst, hydrogenation reaction generates methyl nonacetaldehyde. The synthetic equation of this synthetic method is:
The invention adopts morpholine/acetic acid as a catalyst for the aldol reaction, has mild reaction conditions and high selectivity. Furthermore, the present invention uses dropwise addition of Undecanal to reduce the generation of side reactions and increase the selectivity and yield of the reaction; further, the second step reaction of the present invention adopts the addition method of hydrogenation, which has high selectivity. It has the advantages of high reaction selectivity and high yield.
2. Used to prepare durable new latex paint Existing environmental protection wall coatings are divided into two kinds of water-based latex coatings and oily environmental protection wall coatings. The construction of water-based latex paint is greatly affected by temperature, and it cannot be applied in colder areas, and it also has requirements for humidity. When the humidity is high, the drying period is too long. In addition, the existing water-based latex coatings have poor anti-fouling performance, do not have good water resistance and abrasion resistance, are easy to powder, fade, have poor aging resistance, and have problems such as low gloss of the coating film. CN201511015561.X provides a durable novel latex paint and a preparation method thereof, which has less volatile organic compound content, less environmental pollution, energy saving, emission reduction, and low-carbon environmental protection.
In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is that a durable novel latex paint is made of the following raw materials in parts by weight: 15-22 parts of white latex, 5-methyl-1-hexanol 3- 7 parts, 2.5-6.8 parts of light calcium carbonate, 10-30 parts of deionized water, 2.5-3.7 parts of oxalic acid, 2.5-6.8 parts of undecanal and 3.8-9.5 parts of ethyl 2-chloro-3-oxobutyrate. Optimized, the above-mentioned durable novel latex paint is made of the following raw materials in parts by weight: 19 parts of white latex, 5 parts of 5-methyl-1-hexanol, 4.2 parts of light calcium carbonate, 18 parts of deionized water, 3.1 parts of oxalic acid, 4.2 parts of Undecanal and 6.9 parts of ethyl 2-chloro-3-oxobutyrate.
Compared with existing products, the present invention improves the mildew resistance and scrub resistance of latex paint after mixing oxalic acid, Undecanal and ethyl 2-chloro-3-oxobutyrate, improves the life-span of latex paint finished products, and can Widely used in wall coating.
Three, prepare a kind of lipstick rose essence CN200810158983.6 provides a kind of rose essence for lipstick which has the advantages of very little consumption, pure and rich fragrance, and strong persistence.
The rose essence for lipstick of the present invention is refined by adopting the following components and percentage by weight: ethylcitronellal 0.8%-1.0%, hydroxycitronellal 5.0%-6.0%, Undecanal 0.1%-0.3%, Hexadecanal 1.0% ~ 1.3%, musk ketone 0.9% ~ 1.1%, musk 1.0% ~ 1.1%, rose 2.0% ~ 2.3%, citronellyl acetate 1.0% ~ 1.1%, geranyl acetate 2.0% ~ 2.2% %, geranyl butyrate 1.8%~2.0%, phenylacetic acid 0.1%~0.2%, agarwood acetate 4.0%~4.5%, geraniol 20.0%~22.0%, vanillyl alcohol 10.0%~12.0%, agarwood Alcohol 5.0%-6.0%, rhodamine alcohol 5.0%-6.0%, cinnamyl alcohol 2.0%-2.5%, phenylethyl alcohol 20.0%-22.0%, myrcene 10.0%-11.0%, nerol 3.5%-4.0%. The invention has the advantages that: the raw material of the rose essence for lipstick of the above formula has convenient source, pure and rich fragrance, strong persistence, very little dosage, generally 0.5%-1.0%.
Preparation of Undecanal
① It can be gotten by oxidation of undecyl alcohol or decrease of undecyl acid.
② Utilizing methyl undecylenate as raw material, catalytic hydrogenation to generate undecyl alcohol, and afterwards catalytic dehydrogenation under the action of copper driver, it can be prepared.
③ Utilizing α-hydroxylauric acid as basic material, it can be gotten by catalytic oxidation.
④ Hydrogenation of undecylenic acid methyl ester, a spin-off in the preparation of n-heptanal, to produce undecyl alcohol, and then gotten by ② method or ① method.
About Products: If you need Undecanal, the cosmetic raw material, please contact our service staff directly, we will provide you with high-quality products at the best price. As an experienced Undecanal manufacturer and supplier, ZSpharmac will provide Undecanal raw materials to customers all over the world for a long time. Over the years, the company has been adhering to the spirit of “integrity management, strict quality control, customer first”, and has won unanimous praise from domestic and foreign customers.
Company Profile and Corporate Culture
ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .
The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .
The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.
OUR MISSION Help China Chemicals to benefit the happiness of human life OUR VISSION Become the most trusted chemical supplier in the world OUR BUSINESS PHILOSOPHY Striver – oriented, enrich employees, customer first, deep service, seek development OUR VALUES Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight
The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.
“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.
Business Type: Manufacturer
Product Range: Cosmetic raw materials
Products/Service:Cosmetic raw materials (flavors and fragrances,antioxidant products, moisturizing and hydrating, whitening agents, cosmetic additives)
Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.
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We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.
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You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.
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Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
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Yes. We’ll give you product analysis report before shipping.
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Different quantity has different discount.
1. ≤50kg, Express delivery recommended, usually called as DDU service;
2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;
3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;
4. For high value products, please select air shipping and express delivery for safe.