磺酸

Kinetic reaction behavior of neo- polyhydric alcohols with fatty acids catalyzed by sulfuric acid was studied.

比较了Brnsted酸，包括硫酸、磷酸、对甲苯磺酸，催化季戊四醇与脂肪酸的酯化反应行为，结果表明，硫酸催化酯化反应速率最快，能有效催化不同类型的新戊基多元醇与脂肪酸的酯化反应，羟基转化率达到98%以上。

The proposed method is of high practicability in on-line determination of sulfamic acid and DL-malic acid in electropolishing solution.

对实现抛光液中氨基磺酸和DL-苹果酸的在线监测具有实际意义。

A good linear relationship could be obtained in the concentrations ranged from 1.6 to 175 mg/L for sulfamic acid and from 3.2 to 175 mg/L for DL-malic acid. The detection limits of each acid were 0.4 mg/L and 0.8 mg/L, respectively.

两者的线性范围分别为1.6~175mg/L和3.2~175mg/L；检出限分别为0.4mg/L和0.8mg/L；相对标准偏差分别小于1.1%和0.9%(n=9)；氨基磺酸的加标回收率在97%~103%之间，DL-苹果酸的加标回收率在93%~105%之间。

The relative standard deviation were less than 1.1% for sulfamic acid and 0.9% for DL-malic acid (n=9). The standard addition recovery of sulfamic acid was 97%-103% and that of DL-malic acid was 93%-105%.

方法用于新型电镀抛光液中氨基磺酸和DL-苹果酸的同时测定，具有很好的实用性。

The technical characteristic,function mechanics and produce techniques of naphtha-lene sulfate salt series superplasticizer,the high performance water-reducing agent such as sulfamic acid series and polycarboxylic acid se-ries,and the multiple superplasticizers are discussed.

对国内外仍广泛应用的萘系高效减水剂，氨基磺酸盐系、聚羧酸系等新型高性能减水剂以及复合型高效减水剂的主要特性、作用原理和合成或生产工艺进行了介绍。

With solid sulfanilic acid as catalyst we can synthesize iso-amyl acetate from acetic acid and iso-amyl alcohol .

用固体酸对氨基苯磺酸作催化剂，以异戊醇和冰乙酸直接酯化合成乙酸异戊酯。

Some typical newly catalysts, such as sulfoacid, inorganics, solid superacids, etc on the reaction of p-hydroxybenzoic esters was summed up especially introduce heteropoly acid catalyst.

总结了磺酸、无机物、固体超强酸等几种典型的合成对羟基苯甲酸酯反应的新型催化剂，重点介绍了杂多酸催化合成对羟基苯甲酸酯。

Sulfonic acid is a foaming acid available from some of the oil companies.

磺酸是从一些炼油公司获得的一种起泡酸。

The main categories are: naphthalene series water reducer, high-performance polycarboxylate superplasticizer, Sulphamate superplasticizer, fat-type superplasticizer.

主要类别有：萘系减水剂、聚羧酸高性能减水剂、氨基磺酸盐减水剂、脂肪类减水剂。

Adhesive has environmentally-friendly products are mainly urea-formaldehyde resin, melamine urea-formaldehyde resin and modified phenolic resin; concrete water reducer products are mainly water-reducing agent has Sulphamate, polycarboxylate water reducer and superplasticizer melamine.

胶粘剂产品主要有环保型脲醛树脂、三聚氰胺改性脲醛树脂和酚醛树脂；混凝土减水剂产品主要有氨基磺酸盐减水剂、聚羧酸减水剂和三聚氰胺减水剂。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。