25990-94-7

Basic information

• Product Name: 2,5,8,11,14,17,20,23,26-nonaoxaheptacosane
• Synonyms: 2,5,8,11,14,17,20,23,26-nonaoxaheptacosane;octaethylene glycol dimethyl ether
• CAS NO: 25990-94-7
• Molecular Formula: C₁₈H₃₈O₉
• Molecular Weight: 398.48892
• EINECS: 247-396-3
• Mol File: 25990-94-7.mol

Chemical Properties

• Boiling Point: 439.5 °C at 760 mmHg
• Flash Point: 166.3 °C
• Appearance: /
• Density: 1.04 g/cm³
• Vapor Pressure: 1.63E-07mmHg at 25°C
• Refractive Index: 1.441
• CAS DataBase Reference: 2,5,8,11,14,17,20,23,26-nonaoxaheptacosane(CAS DataBase Reference)
• NIST Chemistry Reference: 2,5,8,11,14,17,20,23,26-nonaoxaheptacosane(25990-94-7)
• EPA Substance Registry System: 2,5,8,11,14,17,20,23,26-nonaoxaheptacosane(25990-94-7)

Safety Data

• Hazardous Substances Data: 25990-94-7(Hazardous Substances Data)

Usage

Uses

Used in Pharmaceutical Industry:
2,5,8,11,14,17,20,23,26-Nonaoxaheptacosane is used as a surfactant and dispersing agent for the production of pharmaceuticals. Its ability to form stable emulsions and reduce surface tension aids in the creation of various drug formulations.
Used in Personal Care Products:
In the personal care industry, 2,5,8,11,14,17,20,23,26-Nonaoxaheptacosane is used as an emulsifier, detergent, and lubricant. Its compatibility with skin and hair makes it suitable for use in a wide range of cosmetic and personal care products.
Used in Food Additives:
2,5,8,11,14,17,20,23,26-Nonaoxaheptacosane is utilized as an emulsifier and surfactant in the food industry. Its capacity to stabilize emulsions and lower surface tension helps improve the texture, appearance, and shelf life of various food products.
Used as a Lubricant:
Due to its hydrophobic nature and low toxicity, 2,5,8,11,14,17,20,23,26-Nonaoxaheptacosane is used as a lubricant in various industrial applications, reducing friction and wear between moving parts.
Used as a Detergent:
2,5,8,11,14,17,20,23,26-Nonaoxaheptacosane's surfactant properties make it an effective detergent in cleaning products, as it can emulsify and disperse dirt and oils, making them easier to wash away.

InChI:InChI=1/C18H38O9/c1-19-3-5-21-7-9-23-11-13-25-15-17-27-18-16-26-14-12-24-10-8-22-6-4-20-2/h3-18H2,1-2H3

Upstream product

• 112-35-6 triethylene glucol monomethyl ether 
• 111-44-4 3-oxa-1,5-dichloropentane 
• 111-77-3 2-(2-methoxyethoxy)ethyl alcohol 
• 55400-73-2 ((oxybis(ethane-2,1-diyl))bis(oxy))bis(ethane-2,1-diyl) dimethanesulfonate 
• 112-60-7 Tetraethylene glycol 

Relevant articles and documents

Structural Requirements for Glyme Catalysis in Butylaminolysis of Aryl Acetates in Chlorobenzene. Identification of -OCH2CH2OCH2CH2OCH2CH2O- as the Optimal Subunit for Catalysis

The catalytic behavior of linear (open-chain) polyethers (glymes) in butylaminolysis of 4-nitrophenyl acetate carried out in chlorobenzene has been reexamined (J.Am.Chem.Soc. 1980, 102, 2865-2866).The observation of a break in a plot of the catalytic rate constant vs chain length indicates that four oxygens in a -OCH2CH2OCH2CH2OCH2CH2O- subunit are necessary for optimal catalysis.The break, occuring at four oxygens in the profile (corresponds to triglyme), has been verified by a Hammett analysis, which employed four additional aryl acetates (3-chlorophenyl, 3-bromphenyl, 3-cyanophenyl, and 4-cyanophenyl).This break was missed in a previous study (J.Am.Chem.Soc. 1980, 102, 2865-2866) because differing amounts of impurities in the glymes increased the experimental scatter of the data.The Hammett study supports the conclusions of others that breakdown of the zwitterionic tetrahedral intermediate is rate-limiting.The break in the polyether plot implies a specific structure for a glyme-zwitterionic tetrahedral intermediate complex, which contains an ammonium ion that hydrogen bonds to the ether oxygens.

AFFINITIES OF CROWN ETHERS, GLYMES, AND POLYAMINES FOR ALKALI PICRATES IN TOLUENE. APPLICATION OF POLYMER-SUPPORTED LINEAR POLYETHERS.

This work reports the measurements of K values for polyamines, glymes, a few glycols (including that of a long-chain polyethylene glycol, carbowax 6000), and some frequently used cation-binding ligands as complexers of lithium or sodium picrate in toluene as solvent. K values for different resins obtained with the same soluble ligand provide a comparison of the effectiveness of these resins in binding ionic solutes.