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Hydrazine hydrate

CAS

Purity

CHARACTER

hydrazine hydrate, chemical formula N2H4 · H2O, is a colorless transparent oily liquid, with a strong ammonia smell, soluble in water and alcohol solvents. Hydrazine hydrate is an important organic chemical raw material and reducing agent, which is widely used in the fields of medicine, pesticide, dye, rubber and water treatment. In pharmaceutical manufacturing, hydrazine hydrate is used to synthesize a variety of drug intermediates; in the pesticide industry, it is used as an important raw material for pesticides and herbicides; in addition, hydrazine hydrate is also used to synthesize dyes and rubber auxiliaries to improve product performance and quality; in the field of water treatment, hydrazine hydrate is used as a reducing agent to remove heavy metal ions and organic pollutants in water. As a multifunctional organic compound, hydrazine hydrate is widely used in many industrial fields.

APPLICATIONS

(1) Hydrazine hydrate has an important application in the field of sewage treatment. Because of its strong reducibility, it can be used to treat industrial wastewater such as chromium-containing wastewater. By reducing hexavalent chromium to trivalent chromium, it is easier to remove or precipitate, thereby Purify water quality.

(2) In the field of pesticides, hydrazine hydrate is an important raw material in pesticide production, which can be used to synthesize a variety of pesticides, fungicides and herbicides. These pesticides have a wide range of applications in agricultural production and are of great significance to improve crop yield and quality.

(3) Hydrazine hydrate also plays an important role in the field of medicine. It can be used to synthesize a variety of drug intermediates, such as anti-tuberculosis drugs, anti-cancer drugs, etc. These drugs play an important role in the treatment of human diseases and protect people's health.

(4) In the field of dyes, hydrazine hydrate can be used to synthesize a variety of dyes, such as azo dyes, triphenylmethane dyes, etc. These dyes have the advantages of bright colors and high color fastness, and have a wide range of applications in textile, leather and other industries.

(5) In addition, hydrazine hydrate can also be used as a raw material for foaming agents for the production of various foam plastics and rubber products, which are widely used in construction, transportation, packaging and other fields. At the same time, in the electroplating industry, hydrazine hydrate is also used in silver plating, gold plating and other processes, as a reducing agent can provide bright, dense coating.

INDICATORS

ABILITIES

1. Packing: barreled, scattered water
2. Logistics: car transportation, shipping
3. Payment request: EXW/FOB/FCA/CFR only accepted

HONORARY

Chinese name	Hydrazine hydrate
English Name	hydrazine hydrate
Alias	hydrazine hydrate hydrazine hydrate
English alias	hydrazine hydrate Diamide monohydrate Hydrazinium hydroxide Hydrazine monohydrate Hydrazinium hydroxide solution
CAS	10217-52-4 7803-57-8
EINECS	206-114-9
Chemical formula	H6N2O
molecular weight	50.053
InChI	InChI=1/H4N2.H2O/c1-2;/h1-2H2;1H2/p-1
Density	1.03 g/mL at 20°C
Melting Point	-57°C
Boiling Point	120.1 °C(lit.)
Flash Point	204 °F
water soluble	miscible
Vapor pressure	5mm Hg ( 25 °C)
refractive index	n20/D 1.428(lit.)
physicochemical properties	Density 1.032 Melting Point -51.5 ° C Boiling Point 120.1 ° C Refractive Index 1.4285-1.4315 Flash Point 75°C
Dangerous Goods Signs	T-Toxic Substances N-Substances Hazardous to the Environment
Risk Terms	R23/24/25-Toxic by inhalation, skin contact and if swallowed. R34-causes burns. R43-May cause sensitization in contact with skin. R45-May cause cancer. R50/53-Very toxic to aquatic organisms and may have long-term adverse effects on the aquatic environment.
Safety terminology	S45-In the event of an accident or feeling unwell, seek medical attention immediately (if possible, show their label). S53-Avoid contact, special instructions must be obtained before use. S60-The substance and its container must be disposed of as hazardous waste. S61-Avoid release to environment. Refer to Special Instructions/Safety Data Sheet.
Dangerous Goods Transport No.	UN 2030
Upstream raw materials	Sodium hypochlorite Chlorine Urea Sodium hydroxide
Downstream Products	1-Hydroxybenzotriazole Methylmercaptothiadiazole 3,6-dichloropyridazine

Nature

Hydrazine hydrate is a colorless transparent oily liquid with a light ammonia smell. An aqueous solution of hydrazine hydrate or a salt of hydrazine having a content of 40% to 80% is generally used industrially. Relative density 1. 03 (21 ℃); melting point -40 ℃; boiling point 118.5 ℃. Surface tension (25 ℃) 74.0 mN/m, refractive index 4284, heat of generation -242 lkj/mol, flash point (open cup) 72.8 ℃. Hydrazine hydrate has strong alkalinity and hygroscopicity. Hydrazine hydrate liquid exists in the form of dimer, miscible with water and ethanol, insoluble in ether and chloroform; it can erode glass, rubber, leather, cork, etc., and decompose into Nz, NH3 and Hz at high temperature; Hydrazine hydrate is extremely reductive and reacts violently with halogen, HN03, KMn04, etc., and can absorb C02 in the air to produce smoke.

preparation method

Sodium hypochlorite and sodium hydroxide are mixed into a solution according to a certain proportion, and a mixture of urea and a small amount of potassium permanganate is added while stirring, and the mixture is directly heated to 103~104 ℃ by steam for oxidation reaction. Reaction liquid by distillation, fractional distillation, vacuum concentration of 40% hydrazine, and then by caustic soda dehydration decompression distillation of 80% hydrazine. Or ammonia and sodium hypochlorite as raw materials. 0.1% bone glue was added to ammonia water to inhibit the excessive decomposition of hydrazine. Sodium hypochlorite is added to ammonia water, and the oxidation reaction is carried out under strong stirring at normal pressure or high pressure, and the reaction is continued to generate hydrazine. The reaction solution is distilled to recover ammonia, and then sodium chloride and sodium hydroxide are removed by normal controlled distillation. The evaporation gas is condensed into low-concentration hydrazine, and then fractionated to produce hydrazine hydrate with different concentrations.

Use

can be used as a breaker for oil well fracturing fluids. As an important fine chemical raw material, hydrazine hydrate is mainly used for the synthesis of foaming agents such as AC and TSH; it is also used as a cleaning treatment agent for deoxidation and carbon dioxide removal of boilers and reactors; it is used in the pharmaceutical industry to produce anti-tuberculosis and anti-diabetes drugs; it is used in the pesticide industry to produce herbicides, plant growth conditioners and bactericidal, insecticidal and rodent drugs; in addition, it can also be used to produce rocket fuel, diazo fuel, rubber additives, etc. In recent years, the application field of hydrazine hydrate is still expanding.

Security

It is highly toxic, strongly eroding the skin and blocking enzymes in the body. Acute poisoning, can damage the central nervous system, in most cases can be fatal. In the body mainly affects the metabolic function of carbohydrates and fats. It has hemolytic properties. Its vapor can erode the mucous membrane and cause dizziness; irritate the eyes, make the eyes red and festering. Damage to the liver, lower blood sugar, blood shortage, and cause anemia. The maximum permissible concentration of hydrazine in air is 0.1 mg/m3. Staff should be fully protected, skin and eyes contact with hydrazine, should be directly washed with a large amount of water, and ask a doctor to check and treat. The work area must be adequately ventilated and the concentration of hydrazine in the environment of the production area must be checked frequently with appropriate instruments. Should be stored in a cool, ventilated, dry warehouse, the temperature is lower than 40 ℃, and prevent sunlight. Keep away from fire and oxidant. In case of fire, water, carbon dioxide, foam, dry powder, sand and other fire fighting.

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