硫氢化钠

研究了硫氢化钠和2-溴丙烷在催化剂作用下合成异丙硫醇的反应动力学，建立了动力学模型。

Kinetics for synthesizing isopropyl mercaptan from NaHS and2-bromopropane in the presence of catalyst was studied ; the reaction and the kinetic model of the whole process were investigated .

针对生产氯化钡、硫氢化钠等产品的化工厂的困境，在不做大量投资、不做大的改动、不改变原厂的基础上，提出了改善产品结构、革新生产工艺的方法。

In view of the difficult position of the plant of producting BaCl_2 and NaHS , and on the basis of existing process , the improvement of the product structure is put forward .

目的：探讨硫化氢供体&硫氢化钠（sodiumhydrosulfide，NaHS）对大鼠高肺血流性肺动脉高压及内源性一氧化碳（CarbonMonoxide，CO）／血红素氧合酶（HemeOxygenase，HO）体系的影响。

Objective : To explore the possible impact of hydrogen sulfide donor-NaHS ( sodium hydrosulfide ) on experimental pulmonary artery structural remodeling induced by high pulmonary flow and endogenous carbon monoxide / heme oxygenase pathway .

片状硫氢化钠生产工艺改进

The process improvement of flaky sodium hydrosulfide production

硫酸皮肤素在硫氢化钠脱毛过程中分布变化

The Distribution Change of Dermatan Sulphate Proteoglycan during the unhairing Process with Sodium Hydrosulfide

提高硫氢化钠法合成巯基乙酸选择性的方法

The methods of improving the selectivity of the synthesis of thioglycolic acid with sodium hydrosulphide

静脉使用不同剂量硫氢化钠对正常大鼠重要脏器的影响

Intravenous Injected Different Doses of Sodium Hydrosulfide and Observed the Impact on the Important Organ of Normal Rats

以氯乙酸和硫氢化钠为原料，常压合成了巯基乙酸。

The mercaptoacetic acid was synthesized under atmospheric pressure using chloroacetic acid and sodium hydrosulfide as raw materials .

复分解法生产硫酸钡联产硫脲、硫氢化钠的研究

Producing thiourea and sodium hydrosulfide along with barium sulfate in double decomposition reaction of barium sulfide and sulphuric acid

17和环氧氯丙烷进行醚化反应，然后以硫氢化钠对醚化产物进行巯基改性得到巯基改性D&C红No。

17 was prepared from sodium hydrosulfide and the intermediate , which was synthesized from D & C Red No.

以硫氢化钠作巯基化剂，取代氯乙酸中的氯来合成巯基乙酸。

Mercaptoacetic acid is synthesized , using sodium sulfhydrate as sulfhydryl agent which is substituted for chlorine in chloroacetic acid .

硫化钡&盐酸复分解法制钡盐、硫脲、硫氢化钠

Manufacturing the Barium Salts , as well Thiourea and Sodium Hydrosulfide by the Double Decomposition Reaction of Barium sulfide and Hydrochloric Acid

副反应多导致硫氢化钠法生产巯基乙酸过程中巯基乙酸收率低。

The main matter that causes the low ratio of yield in synthesis of thioglycolic acid with sodium hydrosulphide is that it has many auxiliary reactions during reaction course .

本文对巯基乙酸的合成工艺进行了比较研究，认为硫氢化钠法和硫代硫酸钠法生产成本低，适宜于选矿用巯基乙酸的生产，而硫脲法可得到较高浓度的巯基乙酸。

Using sodium hydrosulphide or sodium thiosulfate as materials , the production cost of TGA is low . While , a high content of TGA can be obtained with thiourea as reactant .

利用热力学理论研究了发生这些副反应的原因，并提出予以防止的工艺条件，以提高硫氢化钠法的选择性。

This paper studies the causes that cause these side-reactions with thermodynamic methods , using relevant conditions of technology to prevent them from happening , thus improving the selectivity of synthesis with sodium hydrosulphide methods .

以丙烯腈和硫氢化钠为主要原料，通过正交试验考察了原料摩尔比、加成反应温度、水解时间及硫粉用量4种因素对合成β巯基丙酸收率的影响。

Acrylonitrile and sodium hydrosulfide were used as main materials for the synthesis of β - mercaptopropionic acid . The influences of four factors ( the mole ratio of the raw materials , the addition reaction temperature , the hydrolysis time , the powdered sulfur usage ) were investigated .