General Description
Chinese name: 18- crown ether -6
English name: 18-Crown-6
Nickname: 18- crown -6 ether
Appearance: White crystal
Purpose: Used as metal ion complexing agent; Organic reagents, pharmaceutical intermediates; Used as a complexing reagent and phase transfer catalyst
Packing: 25kg/ barrel
| Melting point |
42-45 °C(lit.) |
| Boiling point |
116°C 0,2mm |
| density |
1,175 g/cm3 |
| refractive index |
1.4580 (estimate) |
| Fp |
>230 °F |
| storage temp. |
Store at 0-5°C |
use1
One of the most important features of crown ethers is that they can form stable complexes with various metal salts, ammonium salts, and organic cation compounds. Using this property, various salts can be dissolved in organic solvents. Crown ether can chelate cations into the ring, and at the same time it can form complexes due to the outwardly facing organic genes, and it can also be soluble in non-polar organic solvents. At this time, the unsolvated anion exists in the solvent in the form of a naked anion, so it is extremely active. Crown ethers can dissolve alkali metals and organic alkali metal compounds in organic solvents. Therefore, it has found a wide range of applications in organic synthesis, optical resolution, heavy metal chelation, separation, analysis, and physiologically active medicine and biochemistry. For example, as a phase transfer catalyst, many reactions that are difficult to react or even do not occur under traditional conditions can be carried out smoothly. This type of reaction has a fast rate, simple conditions, convenient operation and high yield. For example, the yield of the condensation reaction of benzoin in an aqueous solution is extremely low. If 7% of crown ether is added to the aqueous solution, a 78% yield of benzoin can be obtained. This reaction can also be carried out in benzene (or aceto nitrile). Although potassiumcyanide is insoluble in benzene, if 18-crown-6 is added, not only the reaction can occur, but the yield can be as high as 95%. Toxicity of 18-crown-6: The oral lethal dose of rats is 300 mg/kg. Irritating to eyes and skin.
use2
Used as a complexing reagent and phase transfer catalyst. It is widely used in the pharmaceutical industry, electronic solid sealant, adhesive production and other fields.
use3
Strong complexing agent for alkali metal ions. Colorimetric determination reagent for the determination of potassium salt in serum. Organic Synthesis. Phase transfer catalyst.
use4
Macrocyclic ether organic compounds. The main uses are high-efficiency phase transfer catalysts for fine organic synthesis, complexing agents, and extractants for separation and extraction of precious metals and rare earth elements. It can be used for ion enrichment, separation and masking in chemical analysis. It can also be used as ion conductive material and liquid crystal display element production material in medicine, biochemistry field and electronic industry.
use5
Used as a metal ion complexing agent
Physical properties: 18-crown ether-6 is a chemical with the formula C12H24O6. Colorless viscous liquid, crown ether, also known as macrocyclic ether, is a macrocyclic compound containing multiple oxygen atoms. When naming, label the total number of atoms in the ring before the prefix and the number of oxygen atoms in the ring after the name. This was accidentally discovered by Pedersen of DuPont in 1967 and found that this class of compounds had many unusual properties.
Transport and storage: The product can be transported by car or train. In accordance with the dangerous goods transport regulations.
Emergency measures: First aid measures Skin contact: remove contaminated clothing and rinse with plenty of running water. Eye contact: Lift eyelid and rinse with running water or saline. Seek medical attention. Inhalation: Quickly remove from the scene to fresh air. Keep your airway clear. Give oxygen if breathing is difficult. If breathing stops, immediately give artificial respiration and seek medical attention. Ingestion: Drink enough warm water to induce vomiting. Gastric lavage, drainage. Seek medical attention. If breathing stops, give artificial respiration immediately. Seek medical attention.
Note: The net weight of each barrel is 25kg. Packing containers should be tightly sealed. Jinan Trands Chemical reminds you that the goods should be stored in a dry, ventilated warehouse, the temperature does not exceed 35 degrees Celsius, and away from fire sources, oxidants, acids.
Storage: Stored in the dry and ventilated inside storeroom, prevent direct sunlight, slightly pile and put down
We can provide you with different standard,such as CP, USP, EP, BP, etc.
At the same time,we also can provide you with various certificates such as SGS, GMP, COA, MSDS, SDS, etc.
We guarantee 100% safe transportation of the goods to your hands,so that you do not need to worry about customs clearance.---100% safe through customs.
At the same time,if there is a deduction,we can reissue or reissue it for you.Our product quality and service are consistent.
"Quality best,custom first" is what we adhering all the time
We always believe that the customer comes first, your satisfaction is our greatest achievement.
| By Express |
By Air |
By Sea |
| Suitable for under 50kg |
Suitable for more than 50kg |
Suitable for more than 500kg |
| Fast: 3-7 days |
Fast: 3-7 days |
slow: 3-7 days |
| High cost |
Medium cost |
Low cost |
| Door to door service |
Port to port service |
Port to port service |
Company Profile
Hebei Guanlang Biotechnology Co., Ltd. was founded in 2007 , located in Shijiazhuang city which is the capital of Hebei Province and hub sector among Beijing Tianjin and Hebei and has advantage of convenient transportation . Our company is a modern hightech chemical enterprise with Research & Development, production and sales.
Our company has strong technical strength, advanced equipment, strict quality management system and high-quality aftersales service, adhers to the "customer first and forge ahead" business philosophy and insists on integrity as the company's survival. All for the customers' satisfaction, all for the longterm healthy development of the enterprise. In the past 10 more years, we have been strictly managing the whole trade process, focusing on every detail, providing customers with allround services such as product purchase, R & D, quality control, logistics management and so on, and become reliable cooperation company and partner for our clients. Nowadays We formed large varieties, large scale, complete categories, refined degree, added value and high technology content product chain .There are several series including pharmaceutical products, food grade additives, industrial grade, fertilizer grade and mineral products.
In recent five years, the company has implemented the strategy of "going out" vigorously. We has established our branches in Hubei China, Vietnam and Mexico, making our market and sales network more and more perfect. Our company will continue to adhere to the strategic positioning of fine chemical industry in the future and competition ideas of irreplaceable product differentiation, and strive to become to the leading of Chinese chemical industry.
As a way to use the resource on the expanding info in international trade, we welcome prospects from everywhere on the web and offline. In spite on the high quality items we offer, effective and satisfying consultation service is supplied by our qualified after-sale service group. Item lists and detailed parameters and any other info weil be sent to you timely for the inquiries. So please make contact with us by sending us emails or call us when you've got any questions about our organization.
Certifications
FAQ
Q1: Can I get some samples?
A: Yes, we can supply the free sample, but the shipping cost be paid by our customers.
Q2: How to start orders or make payments?
A: Proforma invoice will be sent first after confirmation of order, enclosed our bank information. Payment by T/T, Western Union .
Q3: How to confirm the Product Quality before placing orders?
A: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.
Q4:What's your MOQ?
A:Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
Q5: How about delivery leadtime?
A:Delivery lead time: About 3-5 days after payment confirmed. (Chinese holiday not included)
Q6:Is there a discount?
A:Different quantity has different discount.
Q7: How do you treat quality complaint?
A:First of all, our quality control will reduce the quality problem to near zero. If there is a real quality problem caused by us, we will send you free goods for replacement or refund your loss.
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