尤物视频污,99热99热99超碰,精品久久久久女少妇,少妇精品无码,日B视屏久久香色,亚洲美女午夜福利av,国产美女被操,国产九九精品,国产久久色情

China 2-Метоксикоричная кислота - China Supplier
China 2-Метоксикоричная кислота - China Supplier China 2-Метоксикоричная кислота - China Supplier

2-Метоксикоричная кислота

цена:подлежащий переговорам
Категория отрасли: Chemicals/Polymers
Категория продукции:
Марка:
Спецификация:


Contact Info
  • адрес:Jiang'an District of Wuhan, Zip: 430000
  • контакт с: Eason Xiao
  • Телефон:18171091217
  • электронная почта:kim.landmarkind@protonmail.com

прочие продукты

описание
дополнительная информация

Molecular Formula:C10H10O3

Molecular Weight:178.18

EINECS No.:228-047-4

Melting point: 182-186 °C

Purity: >99%

Appearance: White crystal powder,Insoluble in water, soluble in ethanol, ethyl acetate and other organic solvents

Package specification: 200kg/blue barrel

Storage:  sealed, store in cool, dry, ventilated place

 

Preparation method: From the aqueous poplar aldehyde and dimethyl sulfate methylation reaction was made.

The 3kg sodium hydroxide is mixed with 30% aqueous solution and added by stirring In a solution containing 12.2kg of water, Yang aldehyde and 80L water, heated to boiling.

The 12.9kg sulfuric acid dimethyl ester is slowly added to keep the reaction fluid reflux

About 3h Plus, continue to reflow 2-3h, cooling oil, with 5% sodium hydroxide solution washed, and then washed to ph 8, plus anhydrous potassium carbonate Dry. Remove the desiccant after decompression distillation, collect 120 ℃ (2.0kPa) fraction, that is, O-methoxy benzaldehyde.

Methylation reactions are also Can be carried out in solvent toluene, yield 60%.

 

Usage:

 2-Methoxycinnamic acid 

 is an organic synthetic intermediate for the production of spices and pharmaceuticals. O-methoxy basic formaldehyde can be used in production.

methoxy-phenyl-methyl Aldehyde can be used in the production of epinephrine-induced cough ning. O-methoxy cinnamic acid is mainly used in the fragrance of daily. Cinnamic acid is an important organic chemical raw material, widely used in drugs, flavors, essence and fragrances and light-sensitive materials and other fine Preparation of chemical products.

Cinnamic acid is a cinnamon-flavored spice that blends apples, cherries, fruits and floral fragrances as a flavoring ingredient. Generally has a good effect of incense, and can make the fragrance of the main fragrance more fresh through hair, but also as soap, shampoo, washing powder, daily cosmetics in the aromatic mixture.

 

Specifications

 

Item

Requirements

Results

Assay

>99%

99.15%

Description

White crystal powder

White crystal powder

Melting point

182-186 °C

 

185°C

Acidity

≤1mgKOH/g

0.41mgKOH/g

 

Категория отрасли: Chemicals/Polymers
Категория продукции:
МаркаBrand:
Спецификация:
Stock:
Origin:
About Toocle.com - Partner Programme - Old Version
Copyright ? Toocle.com. All Rights Reserved.
(浙)-經(jīng)營性-2023-0192
ChatGlobal Chat Me 莎车县| 大兴区| 金华市| 湟中县| 大同市| 乃东县| 湟中县| 沧州市| 万州区| 建宁县| 德令哈市| 锦州市| 黑龙江省| 永善县| 罗源县| 漯河市| 五大连池市| 瑞金市| 文山县| 拉萨市| 太保市| 龙泉市| 望城县| 栾川县| 通城县| 日照市| 辽中县| 临汾市| 收藏| 舟山市| 出国| 盐池县| 镇原县| 广元市| 丰城市| 天镇县| 贡觉县| 庐江县| 平利县| 定远县| 清水县|