Direct application of hydrazine hydrate

1. Anticorrosion additive used for circulating water in thermal power plants and nuclear power plants. 2. Deoxidizer for water used in industrial boilers and high-pressure steam boilers. Hydrazine hydrate is a deoxidizer, which can reduce the dissolved oxygen in water and is used to further remove the residual trace dissolved oxygen in boiler feed water after thermal deoxidization. Because dissolved oxygen in feedwater will cause corrosion of boiler tube wall. Adding hydrazine hydrate to the boiler feed water can not only deoxidize, but also prevent the formation of iron scale and copper scale in the boiler.

2024-05

2024-05-24

Introduction and properties of dimethylacetamide

Dimethylacetamide, the full name is N,N-dimethylacetamide (chemical formula: CH3C(O)N(CH3)2, abbreviated as Dmac or DMA. A commonly used aprotic polar solvent. Colorless transparent liquid, flammable. Can be used with Organic solvents such as water, alcohol, ether, ester, benzene, chloroform and aromatic compounds can be mixed at will. It is used in pharmaceuticals, synthetic resins, and is also used as a solvent for polyacrylonitrile spinning and the extraction of styrene from the carbon eight fraction. Distilled solvents, etc. are produced by the action of diamine and acetyl chloride.

2024-05

2024-05-15

Precautions for use and operation of cyclohexylamine

As cyclohexylamine is irritating to the skin and mutagenic to the human body, the staff shall wear a direct gas mask (half mask), chemical safety goggles, anti-corrosion work clothes, rubber oil resistant gloves and conduct airtight operation in strict accordance with the operating procedures in daily work contact. The working environment shall be ventilated to avoid kindling and heat source.

2024-05

2024-05-02

Dimethyl sulfoxide: the universal solvent for industry and science

Dimethyl sulfoxide is an extremely important aprotic polar solvent that is soluble in both water and organic solvents. Its excellent solubility makes it a powerful assistant in fine chemical synthesis, solvent extraction and other fields.

2024-04

2024-04-08

Composition and function of cyclohexylamine corrosion and scale inhibitor

In industry, cyclohexylamine is prepared by aniline catalytic hydrogenation, and the commonly used catalyst is cobalt. It can also be divided into two methods: atmospheric pressure and pressurization. In the atmospheric method, the molar ratio of aniline to hydrogen is 1:2, the addition reaction temperature is 150~180 ℃, and the pressure in the reactor is atmospheric. In the pressurization method, the molar ratio of aniline to hydrogen is 1:10, the addition reaction temperature is about 240 ℃, and the pressure in the reactor is 14.61MPa. The fixed bed liquid phase hydrogenation method is adopted.

2024-03

2024-03-27

The improvement of NMP helps the rapid development of lithium batteries.

The Chinese name of NMP is N -Methy-Pyrrolidone, is a key chemical solvent and extractant in electronic chemicals. Since the 1990s, NMP has risen in the domestic petrochemical industry. After more than 20 years of development, it has gradually been completely localized by the initial basic import. The scope of application has been gradually limited to the petrochemical, coating, pesticide and other industries. Expanded to use in insulation materials and blending solvents, especially lithium-ion batteries, chemical solvents for industrial plastics and printed circuit boards, electronic cleaners for liquid crystal displays.

2024-03

2024-03-20

Main uses and storage methods of THF

2024-02

2024-02-28

What chemical substance is dmac?

Dmac is a very common chemical substance. The Chinese name of dmac is dimethylacetamide, and its full name is N,N-dimethylacetamide. The chemical formula of dmac is: CH3C(O)N(CH3)2.

2024-02

2024-02-26

Development status of global N-Methylpyrrolidone (NMP) industry

N-Methylpyrrolidone(NMP) is a colorless and transparent liquid with boiling point of 202 ℃ and flash point of 95 ℃. It has low volatility, good thermal and chemical stability. It can be miscible with water and soluble in organic solvents such as ether and acetone.

2024-01

2024-01-30

Chemical Properties and Uses of Dicyclohexylamine

Dicyclohexylamine，CAS No. 101-83-7, semi colorless liquid with fishy smell. Dicyclohexylamine has the chemical properties of secondary amine. It is strongly alkaline and can form salts with various acids. Acylation reaction may occur.

2024-01

2024-01-04