| ADIPOYL HYDRAZIDE | ||
|
PRODUCT IDENTIFICATION |
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| CAS NO. |
1071-93-8 |
|
| EINECS NO. | 213-999-5 | |
| FORMULA | H2NNHCO(CH2)4CONHNH2 | |
| MOL WT. | 174.20 | |
| H.S. CODE | ||
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TOXICITY |
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| SYNONYMS | Hexanedioic acid dihydrazide; | |
| Adipodihydrazide; Adipic dihydrazide; | ||
| DERIVATION |
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|
CLASSIFICATION |
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PHYSICAL AND CHEMICAL PROPERTIES |
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| PHYSICAL STATE | slightly
yellow crystalline powder |
|
| MELTING POINT |
175 - 178 C |
|
| BOILING POINT | ||
| SPECIFIC GRAVITY | ||
| SOLUBILITY IN WATER |
50 g/l |
|
| AUTOIGNITION |
360 C |
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| VISCOSITY | ||
| PH |
9.5 ((at 10g/l, 20 C) |
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| VAPOR DENSITY | ||
| NFPA RATINGS | Health: 1; Flammability: 0; Reactivity: 0 | |
| FLASH POINT | > 109 C | |
| STABILITY | Stable under ordinary conditions | |
|
GENERAL DESCRIPTION & APPLICATIONS |
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Adipic Acid (also called hexanedioic acid) is a white, crystalline compound of
C6 straight-chain dicarboxylic acid; slightly soluble in water and soluble in
alcohol and acetone. Almost all of the commercial adipic acid is produced from
cyclohexane through two sequent oxidation processes. The first oxidation is the reacting
of cyclohexane with oxygen in the presents of cobalt or manganese catalysts at a
temperature of 150 - 160 C, which produce cyclohexanol and cyclohexanone. Then,
the intermediates are further reacted with nitric acid and air with a catalyst
(copper or vanadium) or without nitric acid. Cyclohexane can be prepared by the
hydrogenation of benzene. There are other ways such as the reactions using
phenol, butadiene, and various fats as the starting material. Adipic acid
consumption is linked almost 90% to nylon production by the polycondensation
with hexamethylenediamine. Nylon, having a protein-like structure, is further
processed into fibers for applications in carpeting, automobile tire cord and
clothing. Adipic acid is used in manufacturing plasticizers and lubricants
components. It is used in making polyester polyols for polyurethane systems.
Food grade adipic acid is used as gelling aid, acidulant, leavening and
buffering agent. Adipic acid has two carboxylic acid, -COOH, groups, which can
yield two kinds of salts. Its derivatives, acyl halides, anhydrides, esters,
amides and nitriles, are used in making target products such as flavoring
agents, internal plasticizers, pesticides, dyes, textile treatment agents,
fungicides, and pharmaceuticals through further reactions of substitution,
catalytic reduction, metal hydride reduction, diborane reduction, keto formation
with organometallic reagents, electrophile bonding at oxygen, and condensation.
Hydrazine (anhydrous) is a clear, fuming, corrosive liquid with an ammonia-like odor; melting at 1.4 C, boiling at 113.5 C, specific gravity 1.011. It is very soluble in water and soluble in alcohol. It decomposes on heating or exposure to UV to form ammonia, hydrogen, and nitrogen, which may be explosive with a blue flame when catalysed by metal oxides and some metals such as platinum or Raney nickel. It is prepared from ammonia with chloramine in the presence of glue or gelatin (to inhibit decomposition of the hydrazine by unreacted oxidants) as the hydrate form usually (100% monohydrate contains 64% by weight hydrazine). Hydrazine is also prepared from sodium hypochlorite with urea in the presence of glue or gelatin. Botht ammonia and amines are nitrogen nucleophiles which donate electrons (they are Lewis bases). But hydrazine (diamine) has much stronger nucleophilicity which makes it more reactive than ammonia. Hydrazine has dibasic and very reactive properties. Hydrazine is used as a component in jet fuels because it produce a large amount of heat when burned. Hydrazine is used as rocket fuel. Hydrazine is used as an oxygen scavenger for water boiler feed and heating systems to prevent corrosion damage. Hydrazine is used as a reducing agent for the recovery of precious metals. It is used as a polymerization catalyst and a chain extender in urethane coatings. It and its derivatives are versatile intermediates. They have active applications in organic synthesis for agrochemicals, pharmaceuticals, photographic, heat stabilizers, polymerization catalysts, flame-retardants, blowing agents for plastics, explosives, and dyes. Recently, hydrazine is applied to LCD (liquid crystal displays) as the fuel to make faster thin-film transistors. Hydrazide is an acyl hydrazine. Acyl (-CO) is an organic radical formed by removal of a hydroxyl group from an organic acid (carboxyl group). Adipoyl hydrazide is used as polyurethane dispersion. |
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| SALES SPECIFICATION | ||
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APPEARANCE |
slightly yellow crystalline powder | |
| ASSAY |
99.5% min (DRY) |
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| PURITY (HPLC) |
95.0% min |
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| METHANOL |
0.1% max |
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|
MOISTURE |
0.4% max |
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|
HYDRAZINE |
500ppm max |
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| TRANSPORTATION | ||
| PACKING | 25kgs in Bag | |
| HAZARD CLASS | ||
| UN NO. | ||
| OTHER INFORMATION | ||
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Hazard Symbols: n/a, Risk Phrases: n/a, Safety Phrases: 24/25/28A/37/45 |
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