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15-Crown-5 CAS No.:33100-27-5 made by Hangzhou Shitai Biotech Co.,LTD in China
Mar 12, 2018

PRODUCT   NAME

15-Crown-5

CAS   No.:

33100-27-5

Synonyms

1,4,10,13-Pentaoxacyclopentadecane

Formula:

C10H20O5

Molecular   Weight:

220.26300

PSA:

46.15000

LogP:

0.08300

 

Structure

Description

Appearance   & Physical State:

colourless   liquid

Density:

1.109

Melting   Point:

-20ºC

Boiling   Point:

100-135ºC   (0.2 mmHg)

Flash   Point:

139.1ºC

Refractive   Index:

1.464-1.466

Water   Solubility:

MISCIBLE

Stability:

Stable.   Incompatible with oxidizing agents, strong acids. Avoid exposure to water or   moist air.

torage   Condition:

Store   in a tightly closed container. Store in a cool, dry, well-ventilated area   away from incompatible substances.

 


Symbol:

http://or.molbase.net/themes/pic/images/GHS07.png
  GHS07

Sign:

Warning

hazard   declaration:

H302; H315; H319



waring   notice:

P305   + P351 + P338

RTECS:

SB0200000

Hazard   Class:

6.1(b)

Safety   Statements:

S26-S39

HS   Code:

29329995

Packing   Group:

III

WGK   Germany:

3

RIDADR:

UN   2810

Risk   Statements:

R20/22;   R36

Hazard   Codes:

Xn

 

certificate of analysis

 

ProductName: 15-Crown-5

Cas:        33100-27-5

Batch No.:     20130502

MFG Date:  May.02.2013

Analysis Date: May.02.2013

 

Inspect Item

Quantity Standard

Inspection Result

Appearance

Colorless to light yellow transparant liquid

Comforms

Water(KF)

≤0.2%

0.11%

Purity

≥98.0%

98.31%

Conclusion

In accordance with enterprise standard

QC Manager:李莉                  Analyst: 王华



15-Crown-5 CAS No.: 33100-27-5 is a Hangzhou Shitai Biotech Co., a fine chemical produced by LTD. 4 years ago, our company had developed this product and offered it to customers. The production cost of this product is high. The largest characteristic of crown ethers is that it can complex with positive ions, especially with alkali metal ions, and is complex with different metal ions with the size of the ring. The crown ethers are usually obtained by the Williamson synthesis method, that is, using the alcohol salt (often two glycoll or three glycoll) and halogenated alkanes            Williamson synthetic method            The reaction is generated. The reaction of 18 - Crown (ether) - 6 is the reaction of two chloro Sanya ethyl two ether and three glycolic hydroxyl group to form crown ethers. The essence is that two chloro Sanya ethyl two ether is removed from the chlorine atom and three glycolic hydroxyl groups are removed from hydrogen atoms to form macrocyclic compounds. This property of crown ethers is very useful in synthesis, so that many reactions that are difficult to react or even do not occur under the traditional conditions can be carried out smoothly. The crown ether is complexed with the positive ions in the reagent, so that the positive ions can be dissolved in organic solvents, and the corresponding negative ions also enter into organic solvents. Crown ether is not complexed with negative ions, which makes the reaction of free or exposed negative ions highly reactive and can react quickly. In this process, crown ethers bring the reagents into organic solvents. They are called phase transfer agents or phase transfer catalysts. The reaction that occurs is called phase transfer catalysis. The reaction rate is fast, the condition is simple, the operation is convenient, and the yield is high.

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