Anhydrous Hydrazine Buy
Anhydrous hydrazine is a strong reducing agent. Mixtures of hydrazine and very strong oxidizers are hypergolic (i.e., they auto-ignite on contact). Hydrazine and hydrazine blends are used as fuels in hypergolic bipropellant combinations. They also have other properties, such as high specific impulse. Anhydrous hydrazine in contact with platinum group metal catalysts will decompose in a controlled reaction and can be used as a monopropellant.
anhydrous hydrazine buy
Physical properties of anhydrous hydrazine are given in Table 2 below. Many of these properties are similar to those of water. In addition, anhydrous hydrazine is a strong reducing agent. Mixtures of hydrazine and a very strong oxidizers are hypergolic. They also have other properties, such as high specific impulse, which makes them valuable as aerospace fuels.
Anhydrous hydrazine (N2H4) is a clear, colorless, hygroscopic liquid with a distinct ammonia-like odor. It is a highly polar solvent, miscible with other polar solvents but immiscible with non-polar solvents.
Anhydrous hydrazine is available in monopropellant and standard grades. Monopropellant grade meet all requirements of the most recent version of Military Specification MIL-P-26536. Specifications for standard grade anhydrous hydrazine are given below.
Physical properties of anhydrous hydrazine are given below. Many of these properties are similar to those of water. In addition, anhydrous hydrazine is a strong reducing agent. Mixtures of hydrazine and very strong oxidizers are hypergolic. They also have other properties, such as high specific impulse, which make them valuable as aerospace fuels.
General description: Sensitive determination of hydrazine with detection limit of 10.0nM has been achieved by employing an electrochemical sensor. Hydrazine undergoes dehydrogenation in the presence of bimetallic NiRh nanoparticles (NPs) supported on nitrogen-doped porous carbon (NPC) derived from metal-organic frameworks (ZIF-8) to afford hydrogen.
Application: Hydrazine may be used in the synthesis of:. pyridyl aminated O-linked sugar chains from glycoproteins. nanocomposite of manganese oxide embedded in graphene sheets (GS-Mn3O4). formyl hydrazine by reacting with ethyl formate
A method for preparation of pyridylamino (PA-) derivatives of O-linked sugar chains from glycoproteins was developed. A glycopeptide containing O-linked Gal beta 1-3GalNAc was prepared from fetuin and treated with anhydrous hydrazine followed by N-acetylation of free amino groups. Sugar chains released were pyridylaminated with improved reaction conditions and excess reagents were removed by gel filtration. Gal beta 1-3GalNAc-PA obtained together with PA-Gal as a by-product was quantified by HPLC. Conditions for the hydrazine treatment were investigated and the treatment at 40 degrees C for 350 h gave the best results for releasing O-linked sugar chains. The total yield of Gal beta 1-3GalNAc-PA from the glycopeptide was 53% under the established conditions and that of PA-Gal was 18%. The present method was applied to a glycoprotein, and the expected PA-O-linked sugar chains were obtained. Under these conditions, N-linked sugar chains were also released.
ISO 15859-7:2004 specifies limits for the composition and physical properties of anhydrous hydrazine (N2H4) and establishes the sampling and test requirements applicable for the verification of the anhydrous hydrazine composition.
ISO 15859-7:2004 is applicable to anhydrous hydrazine propellant, intended for use as fuel in propellant systems of space systems as well as in both flight hardware and ground facilities, systems, and equipment, of grades: standard [normal production and quality control (suitable for most uses)], monopropellant [normal product with strict control of specified impurities (to be specified only for monopropellant catalytic engines where extended life of the catalyst is desired)] and high purity (special production with strict control of specified impurities).
Hydrazine is an inorganic compound with the chemical formula N2H4. It is a simple pnictogen hydride, and is a colourless flammable liquid with an ammonia-like odour. Hydrazine is highly toxic unless handled in solution as, for example, hydrazine hydrate (N2H4xH2O).Hydrazine is mainly used as a foaming agent in preparing polymer foams, but applications also include its uses as a precursor to polymerization catalysts, pharmaceuticals, and agrochemicals, as well as a long-term storable propellant for in-space spacecraft propulsion. Additionally, hydrazine is used in various rocket fuels and to prepare the gas precursors used in air bags. Wikipedia
Hydrazine hydrate and anhydrous hydrazine are highly carcinogenic, toxic and air unstable compounds however as the sulfate salt, the hydrazine is much more stable and can be handled without much of the safety concerns as pure hydrazine. Hydrazine hydrate is produced when hydrazine sulfate is reacted with a strong base such as sodium hydroxide.
Concentrated (20 - 30%) ammonia is mixed with methyl ethyl ketone and a few hundred mg of gelatin and cooled down to 0C. Sodium hypochlorite is then added dropwise until the stoichiometric amount has been added. A hydrophobic azine (methyl ethyl ketazine) which is less dense than water, will then separate. This azine is then mixed with a stoichiometric amount of 17% sulfuric acid, and heated to the boiling point of MEK to ensure full hydrolysis of the azine. Finally, the solution is chilled to 0C to precipitate the hydrazine sulfate. The solution is then vacuum filtered.[1]
When mixed with a solution of silver nitrate, a silver mirror will be formed on the surface of the container. Hydrazine sulfate also finds a variety of uses in organic syntheses such as the preparation of 2,4 dinitrophenylhydrazine, and the preparation of luminol.
Hydrazine ignites in contact with various oxidizers, like liq. ozone, liq. chlorine, chromyl chloride, dinitrogen tetroxide/nitrogen dioxide, conc. hydrogen peroxide, cobalt(III) fluoride, vanadium oxytrichloride . Reaction of anhydrous hydrazine with osmium tetroxide is extremely violent, basically an explosion. Reaction with elemental bromine or iodine however, while violent, it does not lead to ignition.[1]
Anhydrous hydrazine will rapidly and violently reduce iodine pentoxide to hydrogen iodide. Any elemental iodine produced is immediately reduced to HI. The reaction also produces side products like hydrogen, nitrogen, ammonia and copious amounts of ammonium iodide fumes. The reaction can sometimes be violent enough that it may cause an explosion.[2]
Anhydrous hydrazine can be made by reacting hydrazine sulfate with a strong base, filter the reaction product and drying the resulting condensate. Avoid distilling the resulting hydrazine at atmospheric conditions and pressure, as it may explode. Distillation can be done in an inert atmosphere, but any trace of air may lead to an explosion.
Free hydrazine is extremely toxic and should only be handled with proper protection. It will slowly decompose to release nitrogen and ammonia. As a solution is less dangerous, though it's fumes are still very toxic. It may explode during its distillation in the presence of oxygen, due to its low autoignition point, so it's best to perform the distillation in an oxygen-free environment.
While it can be stored in sealed or closed containers, the best and safest way to store hydrazine is in salt form, most often as the sulfate form. It can be easily liberated from this form with an alkali when or if needed.
Hydrazine will slowly leach silica from glass, so avoid storing it in glass containers. Type 304L and 347 stainless steel containers are generally used for storing hydrazine, though high density polyethylene is also suitable.[4]
32050. (a) Prior to the transport of anhydrous hydrazine,methylhydrazine, dimethylhydrazine, Aerozine 50, fuming nitric acid,liquid fluorine, or nitrogen tetroxide in bulk packaging, except whenthat packaging contains only residue, outside the confines of afacility where that material was used or stored, or prior to thedelivery of that bulk material to a carrier for transport, eachcarrier shall provide advance notification, in writing, of theshipment, to the department, which, in turn, shall notify the sheriffof each county and police chief of each city in which is located theproposed route. Notification shall be made through the Departmentof Justice's California Law Enforcement Telecommunications System.The sheriffs and police chiefs shall, in turn, make timelynotification to the fire chiefs within their respective jurisdictionsthrough a mutually agreed upon communications system. (b) Subdivision (a) applies only to the extent that it does notconflict with federal law. (c) For the purposes of this section, the following definitionsapply: (1) "Bulk packaging" has the same meaning as defined in Section171.8 of Title 49 of the Code of Federal Regulations. (2) "Fire chief" means the fire chief of each county and city firedepartment and the fire chief of each fire protection districtserving a population greater than 15,000 in which is located theproposed route. This paragraph does not apply to any fire chief of afire department or fire protection district that is composed of 50percent or more volunteer firefighters. (3) "Residue" has the same meaning as defined in Section 171.8 ofTitle 49 of the Code of Federal Regulations.32051. (a) Each advance notification required by Section 32050shall contain all of the following information: (1) The name, address, and emergency telephone number of themanufacturer, shipper, carrier, and receiver of the shipment. (2) A current copy of a material data safety sheet, as designatedby the department, regarding the material. (3) If the shipment is originating within California, the point oforigin of the shipment and the 48-hour period during which departureof the shipment is estimated to occur, the destination of theshipment within California, and the 48-hour period during which theshipment is estimated to arrive. (4) If the shipment is originating outside of California, thepoint of origin of the shipment and the 48-hour period during whichthe shipment is estimated to arrive at the state boundary, thedestination of the shipment within California, and the 48-hour periodduring which the shipment is estimated to arrive. (5) A telephone number and address for current shipmentinformation. (b) The department shall design a standard notification form toinclude all of the information specified in subdivision (a) and shallmake these forms available by April 1, 1989.32052. (a) The notification required by Section 32050 shall reachthe department at least 72 hours before the beginning of the 48-hourperiod during which departure of the shipment of any materialdesignated in Section 32050 is estimated to occur, and the departmentshall notify the sheriffs and the police chiefs as specified insubdivision (a) of Section 32050 at least 36 hours before thebeginning of the 48-hour departure period specified in subdivision(a) of Section 32051, who shall notify the fire chiefs, as providedin Section 32050. A copy of the notification shall be retained bythe department for three years. (b) The carrier shall also notify, by telephone or telegram, thedepartment if there are any changes in the scheduling of a shipment,in the routes to be used for shipment, or any cancellation of ashipment. The department shall, in turn, notify the sheriffs and thepolice chiefs specified in subdivision (a) of Section 32050 thatwould be affected by these changes in the scheduling of a shipment,in the routes to be used for a shipment, or the cancellation of ashipment, who shall notify the fire chiefs, as provided in Section32050. The department shall maintain for three years a record ofeach telegram and telephonic notification.32053. (a) Any carrier who violates Section 32050, 32051, or 32052,in addition to any other penalty provided by law, is subject to acivil penalty of not less than five hundred dollars ($500) or morethan one thousand dollars ($1,000) for each violation. For purposesof this section, each day of a continuing violation is a separateviolation. (b) When establishing the amount of the civil penalty, the courtshall consider, in addition to other relevant circumstances, all ofthe following: (1) The extent of the harm caused by the violation. (2) The persistence of the violation. (3) The number of prior violations by the same violator. (4) The deterrent value of the penalty based on the financialresources of the violator.Disclaimer: These codes may not be the most recent version. California may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources. 041b061a72