Hydrazine is an inorganic component with N2H4 as its chemical formula. This compound is a colorless and highly flammable oily liquid with an ammonia-like odor. Its characteristics are expressed below:
|Density||1.021 g cm−3|
|Melting point||2 °C|
|Boiling Point||114 °C|
Hydrazine is extremely noxious and hazardously unstable till it dissolves in water and procures hydrazine hydrate (NH2NH2 · xH2O). Hydrazine molecular weight is 32 and the hydrazine hydrate with one H2O molecule or monohydrate has a molecular weight of 50. The ratio of their weight is 32/50 or 0.64. it means 100% of hydrazine hydrate contains 64 % of hydrazine. so it is important to clearly expression by means of application due to not misunderstanding of these two products.
Because of its spectacular structure with two amines, hydrazine is a key parameter for the preparation of many organic heterocyclic compounds. In the specific reaction, hydrazine reacts with imides to produce triazoles. As a brilliant nucleophile compound, it can attack sulfonyl and acyl halides. To produce hydrazones there is a need to Reaction occurrence between The tosylhydrazine and carbonyls. it also has a Wide variety of applications in agrochemicals, as an anti-scaling, purification processes heating and cooling systems
Hydrazine hydrate is a colorless liquid that smells like ammonia. It is Also called Hydrazine Monohydrate. This compound is miscible in water in any congruence and it is not soluble in chloroform. If this component mix with the carbon dioxide in the air the product is a white fume. It is known with H6N2O as its chemical formula. Its characteristics are expressed below:
|Density||1.032 g/ml at 20⁰C|
Hydrazine Hydrate marketplace
It is estimated that the Compound Annual Growth Rate of hydrazine hydrate market gains 4.9% up to 2024. Increasing the requirement of polymer foams in related industries have a major effect on the hydrazine hydrate market due to the prognosis period. Its application in many industries will help the market to grow.
hydrazine hydrate Synthesis
There are some methods for hydrazine hydrate synthesis and three methods are mentioned here:
First method: synthesis of hydrazine hydrate from hydrazine sulfate and potassium hydroxide, for this purpose, the mixture of dehydrating hydrazine sulfate and comminuted potassium hydroxide and distilled water were placed. For the first of reaction heating is not dispensable and in the following heating is necessary. Reaching pure hydrazine hydrate needs fractional distillation and it will distill in the temperature range of 117 to 119.
Second method: synthesis of hydrazine hydrate from hydrazine sulfate and sodium hydroxide
In this method hydrazine sulfate and sodium hydroxide are applied to a flask with a condenser and distilled water are appended gently through the condenser; the reaction starts and it is very important that any vapors should not be released through the condenser. Hydrazine hydrate may be titrated with standard acid using methyl orange as an indicator or about 0.1 gram, accurately weighed, of the hydrazine hydrate solution is diluted with about 100 ml of water, few drops of starch indicator added, and immediately before titration 5 grams of sodium bicarbonate is introduced. The product is distilled by direct heating. The distillate is a clear liquid and it consists of 40-45% of hydrazine hydrate.
Third method: A procurement procedure of hydrazine hydrate which contains the step of hydrolyzing a ketazine in a distillation column to reach hydrazine hydrate in presence of silicon dioxide and nonionic surface active agent having a polyoxyethylene group in its molecule.
Hydrazine hydrate applications
it has a wide range of applications in industries and can be applied as pharmaceutical intermediates, procurement of superb purity metals, in combinatorial fibers, dyes and as reducing agent and it also can use an oxygen scavenger to regulate the concentration of oxygen to prevent corrosion. One of its important usages is as the precursor to polymerization catalysts. Another application of hydrazine hydrate is as rocket fuel and gas precursors preparation in airbags.
Hydrazine hydrate safety and Precautions
This chemical is grouped as hazardous materials by the 2012 OSHA Hazard Communication Standard
Cause it is very air sensitive so do not allow evaporation to dryness it causes smoke
Acquire special instructions before use
Before use read all statements about precautions
Do not tactility until all safety precautions have been read and realized
Use personal protective tools as required Wash face, hands and any exposed skin thoroughly after handling
Do not eat, drink or smoke when using this component
Use only outdoors or in a well-ventilated area
Do not breathe dust/fume/gas/mist/vapors/spray
Polluted work clothing should not be allowed out of the workplace
Put on protective gloves
Keep away from heat/sparks/open flames/hot surfaces
No smoking Keep cool
Noxious if swallowed
Noxious in contact with skin Causes extreme skin burns and eye damage
May cause respiratory inflammation
May cause an allergic skin reaction
Noxious if inhaled May cause cancer