亚洲成人三区,一级毛片久久久,国产精品密蕾丝视频下载,欧美成人国产va精品日本一级

 

Dabco NEM/Niax NEM/Jeffcat NEM

2023-11-13by admin

CAS 100-74-3/N-ethylmorpholine

Overview:

Chinese name: N-ethylmorpholine

Alias: Dabco NEM, Niax NEM, Jeffcat NEM, Lupragen N104, PC CAT NEM, N-ethylmorpholine, ethylmorpholine

English name: N-ethylmorpholine, 4-Ethylmorpholine; ethylmorpholine; N-Ethyl morpholine; 4-ethylmorpholin-4-ium

Molecular Formula: C6H13NO

Relative molecular mass: 115.2

CAS No.: 100-74-3

Dabco NEM Niax NEM Jeffcat NEM Lupragen N104 PC CAT NEM N-Ethyl morpholine Ethyl morpholine

Physical and Chemical Properties:

N-Ethyl morpholine is colorless transparent liquid under normal condition.

Density (20℃): 0.92g/cm3

Viscosity (23℃): 2.3mPa.s

Water solubility: soluble in water

Flash point (TCC): 32℃;

Hydroxyl value: no data

Freezing point -63℃

Boiling point:139.2℃

Melting point:-63℃

Relative density 0.916(20/20℃)

Refractive index 1.4415

Flash point 27℃

Preparation method:

Obtained by reacting morpholine with ethyl bromide:

Morpholine was slowly added into ethidium bromide under stirring and cooling, and the reaction temperature was controlled below 70℃. After addition, reflux reaction for 6 hours. After recovering the ethylene bromide, cool and neutralize with 50% sodium hydroxide solution to strong alkaline. Separate the oil layer, the aqueous layer is extracted with ether, the extract is incorporated into the oil layer, the ether is recovered, dried with anhydrous sodium carbonate and fractionated at atmospheric pressure to obtain N-ethyl morpholine.

Applications:

N-Ethylmorpholine is a medium-strength tertiary amine catalyst, which is mainly used as polyester-type polyurethane soft foam catalyst in the polyurethane industry, with good skin-forming properties, and still has a strong catalytic effect on the gel reaction after the foam rises to a high point, so as to make the bubble holes expand to a large extent.

Uses:

Used as solvent, also used in organic synthesis. Used as a solvent for oils and resins, also used as an intermediate in organic synthesis. The product is soluble in water, alcohol, ether, can be used as solvents, catalysts, dyes, pharmaceuticals, surfactants, intermediates, but also for the production of preservatives, emulsifiers and coatings.

Storage and transportation:

Should be sealed and stored in dry, cool and ventilated warehouse

Packing:

200KG/drum Storage: it is recommended to store in dry and cool area with proper ventilation. Please fasten the packaging cover as soon as possible after the original packaging to prevent the mixing of other substances such as moisture and other substances that may affect the performance of the product. Store in a cool and dry place, keep the container sealed and avoid contact with oxides. Do not inhale dust and avoid contact with skin and mucous membranes. Store in a cool, ventilated warehouse. Keep away from fire and heat source. The temperature inside the warehouse should not exceed 30℃. Protect from direct sunlight. Keep the container sealed. Equipped with appropriate varieties and quantities of fire fighting equipment. Prohibit the use of mechanical equipment and tools that are easy to generate sparks. Load and unload lightly to prevent damage to packaging and containers.

Company?Name:

Newtop?Chemical?Materials?(Shanghai)?Co.,?Ltd.

Sales?Manager:

Hunter

E_Mail:

?sales@newtopchem.com

Telephone:

86-152 2121 6908

Fax:

86-021-5657?7830

Address:

Rm.?1104,?No.?258,?Songxing?West?Road,

Baoshan?District,?Shanghai,?China?(Mainland)

Website:

www.mimgu.com?

admin

主站蜘蛛池模板: 杭锦旗| 萝北县| 石台县| 玛纳斯县| 北票市| 嘉黎县| 平安县| 库尔勒市| 右玉县| 霍林郭勒市| 宣汉县| 嘉定区| 镇沅| 南城县| 曲周县| 东明县| 罗江县| 和硕县| 文成县| 峨眉山市| 四子王旗| 漳州市| 大邑县| 衡阳县| 开江县| 古蔺县| 东山县| 师宗县| 富源县| 胶州市| 大新县| 镇原县| 德阳市| 客服| 禹州市| 米脂县| 英德市| 罗平县| 苍溪县| 昌邑市| 朔州市|