冰醋酸

The R f value of the glucosamine sulfate was 0.36 measured by paper chromatography with the solvent system of pyridine, ethyl acetate, water and glacial acetic acid (5∶5∶3∶1 in volume).

经纸层析鉴定，以吡啶、乙酸乙酯、水和冰醋酸按体积比 5∶5∶3∶1组成的溶剂系统进行展层，氨基葡萄糖硫酸盐的Rf 值为 0 。36。

The Rf value of the glucosamine sulfate was 0.36 measured by paper chromatography with the solvent system of pyridine, ethyl acetate, water and glacial acetic acid (5:5:3:1 in volume).

经纸层析鉴定，以吡啶、乙酸乙酯、水和冰醋酸按体积比5：5：3：l组成的溶剂系统进行展层，氨基葡萄糖硫酸盐的Rf值为0.36。

The Company perennial operating a variety of organic chemical raw materials, varieties include: methanol, ethanol, ethylene glycol, n-butyl alcohol, isobutyl alcohol, isopropyl alcohol, acetic acid, vinyl acetate, acetic acid acetate, acetic acid small lipid , styrene, toluene, phthalic anhydride, xylene, acetone, butanone, cyclohexanone, DMF, sulfuric acid, methyl isobutyl ketone, glycol ether, three toluene, octyl resin, melamine, etc. and so on.

本公司常年经营各种有机化工原料，品种有：甲醇、乙醇、乙二醇、正丁醇、异丁醇、异丙醇、冰醋酸、醋酸乙烯、醋酸乙脂、醋酸丁脂、苯乙烯、甲苯、苯酐、二甲苯、丙酮、丁酮、环己酮、DMF、硫酸、甲基异丁基酮、乙二醇丁醚、三甲苯、二辛脂、三聚氰胺，等等。

I for Hong Kong and Taiwan-owned business enterprises in the chemical industry more than twenty years of marketing, agent distribution Chemical famous brand, the main service items are as follows: methanol, ethanol, ethylene glycol, n-butyl alcohol, isobutyl alcohol, isopropyl alcohol, ice acetic acid, vinyl acetate, acetic acid acetate, acetic acid Ding resin, styrene, toluene, phthalic anhydride, xylene, acetone, butanone, cyclohexanone, DMF, sulfuric acid, methyl isobutyl ketone, glycol ether, three toluene, octyl resin, melamine, and so on.

我公司为港台商独资企业，于化工行业行销二十余年，代理经销国外著名化工品牌，主要服务项目如下：甲醇、乙醇、乙二醇、正丁醇、异丁醇、异丙醇、冰醋酸、醋酸乙烯、醋酸乙脂、醋酸丁脂、苯乙烯、甲苯、苯酐、二甲苯、丙酮、丁酮、环己酮、DMF、硫酸、甲基异丁基酮、乙二醇丁醚、三甲苯、二辛脂、三聚氰胺，等等。

This year the company operating the various organic chemical raw materials, varieties are: methanol, ethanol, ethylene glycol, butanol, isobutanol, isopropanol, glacial acetic acid, vinyl acetate, B lipid, Ding acetic acid lipid, styrene, toluene, phthalic anhydride, xylene, acetone, butanone, cyclohexanone, DMF, sulphuric acid, methyl isobutyl ketone, glycol Dingmi, three toluene, 2 Xin fat, melamine.

本公司常年经营各种有机化工原料，品种有：甲醇、乙醇、乙二醇、正丁醇、异丁醇、异丙醇、冰醋酸、醋酸乙烯、醋酸乙脂、醋酸丁脂、苯乙烯、甲苯、苯酐、二甲苯、丙酮、丁酮、环己酮、DMF、硫酸、甲基异丁基酮、乙二醇丁醚、三甲苯、二辛脂、三聚氰胺。

The company operating a variety of perennial organic chemical raw materials, varieties include: methanol, ethanol, ethylene glycol, n-butyl alcohol, isobutyl alcohol, isopropyl alcohol, acetic acid, vinyl acetate, acetic acid acetate, acetic acid Ding resin, styrene, toluene , phthalic anhydride, xylene, acetone, butanone, cyclohexanone, DMF, sulfuric acid, methyl isobutyl ketone, glycol ether, mesitylene, octyl resin, melamine.

本公司常年经营各种有机化工原料，品种有：甲醇、乙醇、乙二醇、正丁醇、异丁醇、异丙醇、冰醋酸、醋酸乙烯、醋酸乙脂、醋酸丁脂、苯乙烯、甲苯、苯酐、二甲苯、丙酮、丁酮、环己酮、DMF、硫酸、甲基异丁基酮、乙二醇丁醚、三甲苯、二辛脂、三聚氰胺。

Soluble In water and insoluble in ethanol, acetone or glacial acetic acid.

在水中易溶，在乙醇、丙酮或冰醋酸中不溶。

The mobile phase was methyl alcohol-5% glacial acetic acid (22∶78) and detecting wavelength was 322 nm.

5%冰醋酸溶液（22∶78）为流动相，检测波长322 nm。

The mobile phase was methyl alcohol-5% glacial acetic acid (22∶78) and detecting wavelength was 322 nm.

方法采用HPLC法，uBondapak C18(4.0 mm×250 mm)柱，甲醇 5%冰醋酸溶液（22∶78）为流动相，检测波长322 nm。

Based on the comparison of coal desulfurization effects of several kinds of oxidants,the mixed oxidant of glacial acetic acid and hydrogen peroxide was selected as the best.

在用多种氧化剂对煤炭脱硫效果进行比较研究的基础上，筛选出脱硫效果最好的冰醋酸与过氧化氢混合物氧化剂。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐