629-14-1 Usage
Chemical Properties
Different sources of media describe the Chemical Properties of 629-14-1 differently. You can refer to the following data:
1. Clear colorless liquid
2. Ethylene glycol diethyl ether is a colorless liquid.
Uses
Ethylene glycol diethyl ether is a important solvent, used for ink, paint and coating industry. Mainly used in polymer, electrochemistry, boracium chemistry, resin, nitro cellulose, In this product , the benzene, xenene, terphenyl, anthracene reacts with sodium and then bring about the complex; it is also used in surface treatment, halogen analysis in gasoline, acetic acid recycle in diluted acetic acid, depaint agent, thinner, flushing agent, stabilizer, anti oxidant , thickener of lube.
General Description
A clear colorless liquid with a faint ether-like odor. Flash point 95°F. Less dense than water and insoluble in water. Vapors heavier than air.
Air & Water Reactions
Highly flammable. Insoluble in water.
Reactivity Profile
Ethylene glycol diethyl ether can react with oxidizers. Ethylene glycol diethyl ether is incompatible with strong acids.
Health Hazard
Inhalation causes irritation of nose and throat. Contact with liquid irritates eyes but has little or no effect on skin. Ingestion causes irritation of mouth and stomach.
Fire Hazard
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Safety Profile
Moderately toxic by
ingestion. Mildly toxic by inhalation. An
experimental teratogen. Experimental
reproductive effects. An eye irritant. An
aprotic solvent. A very dangerous fire
hazard when exposed to heat or flame; can
react with oxidizing materials. To fight fire,
use CO2, dry chemical. See also GLYCOL
ETHERS and various cellosolve entries.
Potential Exposure
Ethylene glycol diethyl ether is used
as an aprotic solvent; in chemical manufacturing; as a
solvent for detergents and in other cleaning products
Shipping
UN1153 Ethylene glycol diethyl ether, Hazard
Class: 3; Labels: 3-Flammable liquid
Purification Methods
After refluxing for 12hours, a mixture of the ether (2L), conc HCl (27mL) and water (200mL), is added with slow passage of nitrogen. The solution is cooled, and KOH pellets are added slowly and with shaking until no more dissolves. The organic layer is decanted, treated with some KOH pellets and again decanted. It is then refluxed with, and distilled from sodium immediately before use. Alternatively, after removal of peroxides by treatment with activated alumina, the ether is refluxed in the presence of the blue ketyl formed by sodium-potassium alloy with benzophenone, then distilled. [Beilstein 1 H 468, 1 II 519, 1 III 2078, 1 IV 2379.]
Incompatibilities
Forms explosive mixture with air when
heated. Incompatible with oxidizers (chlorates, nitrates,peroxides, permanganates, perchlorates, chlorine, bromine,
fluorine, etc.); contact may cause fires or explosions. Keep
away from alkaline materials, strong bases, strong acids,
oxoacids, and epoxides. Attacks some plastics, rubber and
coatings. May slowly form unstable reactive peroxides during prolonged storage or on exposure to air and light. Also
incompatible with strong acids; aluminum and its alloys
Check Digit Verification of cas no
The CAS Registry Mumber 629-14-1 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,2 and 9 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 629-14:
(5*6)+(4*2)+(3*9)+(2*1)+(1*4)=71
71 % 10 = 1
So 629-14-1 is a valid CAS Registry Number.
629-14-1Relevant articles and documents
METHOD FOR PREPARING DOUBLE-SEALED-END GLYCOL ETHER
-
Paragraph 0042; 0043; 0045; 0047, (2017/12/27)
Disclosed is a method for preparing a double end capped glycol ether, the method comprising: introducing into a reactor a raw material comprising a glycol monoether and a monohydric alcohol ether, and enabling the raw material to contact and react with an acidic molecular sieve catalyst to generate a double end capped glycol ether, a reaction temperature being 50-300° C., a reaction pressure being 0.1-15 MPa, a WHSV of the glycol monoether in the raw material being 0.01-15.0 h?1, and a mole ratio of the monohydric alcohol ether to the glycol monoether in the raw material being 1-100:1. The method of the present invention enables a long single-pass lifespan of the catalyst and repeated regeneration, has a high yield and selectivity of a target product, low energy consumption during separation of the product, a high economic value of a by-product, and is flexible in production scale and application.
Selective synthesis of dimethoxyethane via directly catalytic etherification of crude ethylene glycol
Yu, Weiqiang,Lu, Fang,Huang, Qianqian,Lu, Rui,Chen, Shuai,Xu, Jie
supporting information, p. 3327 - 3333 (2017/07/28)
Etherification of ethylene glycol with methanol provides a sustainable route for the production of widely used dimethoxyethane; dimethoxyethane is a green solvent and reagent that is applied in batteries and used as a potential diesel fuel additive. SAPO-34 zeolite was found to be an efficient and highly selective catalyst for this etherification via a continuous flow experiment. It achieved up to 79.4% selectivity for dimethoxyethane with around 96.7% of conversion. The relationship of the catalyst's structure and the dimethoxyethane selectivity was established via control experiments. The results indicated that the pore structure of SAPO-34 effectively limited the formation of 1,4-dioxane from activated ethylene glycol, enhanced the reaction of the activated methanol with ethylene glycol in priority, and thus resulted in high selectivity for the desired products. The continuous flow technology used in the study could efficiently promote the complete etherification of EG with methanol to maintain high selectivity for dimethoxyethane.
Preparation method for double-terminated glycol ether
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Paragraph 0068; 0069; 0070; 0097, (2017/04/03)
The invention discloses a preparation method for double-terminated glycol ether. The preparation method comprises the following steps: a) introducing raw materials containing glycol monoether and monohydric ether alcohol into a reactor for contact and reaction with an acidic molecular sieve catalyst under the conditions that reaction temperature is 50 to 300 DEG C, reaction pressure is 0.1 to 15 MPa, the mass space velocity of the glycol monoether in the raw materials is 0.01 to 15.0/h, and a mol ratio of monohydric ether alcohol to glycol monoether in the raw materials is 1-100: 1, and separating obtained products so as to obtain a double-terminated glycol ether product, unreacted glycol monoether and monohydric ether alcohol, by-product components and other components; and b) returning the unreacted glycol monoether and monohydric ether alcohol and the by-product components obtained in the step a) to the reactor. The preparation method has the advantages that the catalyst has long single-pass life; the target product, i.e., double-terminated glycol ether has high yield and selectivity; energy consumption in separation of the products is low; by-products have high economic value; production scale can be large or small; and application of the method is flexible.
