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Ferrocene

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CAS:102-54-5
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Ferrocene Basic information
Organic transition metal Chemical Properties Uses Category Toxicity grading Acute toxicity Flammability and hazard characteristics Storage properties Extinguishing agent Professional standards
Product Name:Ferrocene
Synonyms:BIS(CYCLOPENTADIENYL)IRON(+2);FERROCENE;di-2,4-cyclopentadien-1-yliron;DICYCLOPENTADIENYLIRON(II);Bis(cyclopentadienyl)iron,98%(Ferrocene);Bis(cyclopentadienyl)iron,99%(Ferrocene);Ferroceene;BIS-(CYCLOPENTADIENYL)IRON (FERROCENE)
CAS:102-54-5
MF:C10H10Fe
MW:186.03
EINECS:203-039-3
Product Categories:Organometallics;Classes of Metal Compounds;Fe (Iron) Compounds;Ferrocenes;Metallocenes;Transition Metal Compounds;metallocene
Mol File:102-54-5.mol
Ferrocene Structure
Ferrocene Chemical Properties
Melting point 172-174 °C (lit.)
Boiling point 249 °C (lit.)
density 1.490
vapor pressure 0.03 mm Hg ( 40 °C)
Fp 100°C
storage temp. Store below +30°C.
solubility insoluble in H2O; soluble in ethanol, ethyl ether,benzene, dilute HNO 3
form crystal
color orange
Water Solubility practically insoluble
Sensitive Air & Moisture Sensitive
Sublimation 100 ºC
Merck 14,4037
Exposure limitsACGIH: TWA 10 mg/m3; TWA 1 mg/m3
OSHA: TWA 15 mg/m3; TWA 5 mg/m3
NIOSH: TWA 10 mg/m3; TWA 5 mg/m3; TWA 1 mg/m3
Stability:Stable at room temperature. Incompatible with strong oxidizing agents. Highly flammable.
LogP3.711 at 22℃
CAS DataBase Reference102-54-5(CAS DataBase Reference)
NIST Chemistry ReferenceFerrocene(102-54-5)
EPA Substance Registry SystemFerrocene (102-54-5)
Safety Information
Hazard Codes F,Xn,N
Risk Statements 11-22-51/53-2017/11/22
Safety Statements 61-22-24/25
RIDADR UN 1325 4.1/PG 2
WGK Germany 2
RTECS LK0700000
Autoignition Temperature>150 °C
TSCA Yes
HazardClass 4.1
PackingGroup II
HS Code 29310095
Hazardous Substances Data102-54-5(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 1320 mg/kg LD50 dermal Rat > 3000 mg/kg
MSDS Information
ProviderLanguage
Ferrocene English
SigmaAldrich English
ACROS English
ALFA English
Ferrocene Usage And Synthesis
Organic transition metalFerrocene is an organic transition metal compound that has aromatic properties and is also known as dicyclopentadienyl iron. Its molecular structure contains a divalent iron cation and two cyclopentadienyl anions. It is used as a raw material in the production of ferrocenecarboxylic acid and was first successfully produced in the 1950s by reacting cyclopentadienyl magnesium bromide with anhydrous ferric chloride. Ferrocene is a non-polar compound that appears as an orange needle crystal powder with a camphor-like smell at room temperature. It is soluble in many organic solvents, including methanol, ethanol, ethyl ether, petroleum ether, gasoline, kerosene, diesel oil, methylene chloride, benzene, toluene, and xylene. Ferrocene has a molecule with polarity, high thermal stability, chemical stability, and radiation resistance, making it useful in industry, agriculture, medicine, aerospace, energy, environmental protection, and other fields.
Chemical PropertiesFerrocene is a crystal with orange needle-like structure that sublimates at temperatures higher than 100℃ and melts at 172.5-173℃. Its boiling point is 249℃. It is soluble in dilute nitric acid, concentrated sulfuric acid, benzene, ether, petroleum ether and tetrahydrofuran and generates bluish fluorescence-containing deep red solution in dilute nitric acid and concentrated sulfuric acid. It is insoluble in water, 10% sodium hydroxide and hot concentrated hydrochloric acid, and it remains stable in air. Ferrocene has a strong property of UV absorbing and great thermostability, withstanding heating up to 470℃. It has a camphor-like scent and can be evaporated with water vapor. Ferrocene is neither dissolved nor decomposed in boiling solutions of these solvents.
UsesFerrocene and its derivatives have various applications in different fields. It can be used as additives in rocket fuel, antiknock agent in gasoline, curing agent in rubber and silicone resin, and ultraviolet absorber. It can also be used in the production of metal-containing polymers and as a coating material for spacecraft. Ferrocene has a smoke abatement and combustion facilitating effect, which can reduce smoke production and increase power efficiency in fuel. It can also be used as an iron fertilizer for plants and as a pesticide. Ferrocene derivatives have applications as antioxidants, stabilizers, catalysts, and promoting agents in different industrial and organic synthesis processes. Addition of ferrocene to fuels such as diesel, gasoline, heavy oil, and coal can decrease the fuel consumption rate and reduce smoke production. Overall, ferrocene has unique characteristics that make it suitable for various applications in different fields.
Categorytoxic substances
Toxicity gradingpoisoning
Acute toxicityOral-rat LD50: 1320 mg/kg; Oral-Mouse LD50: 832 mg/kg.
Flammability and hazard characteristicsflammable with the combustion generating iron-containing acrid smoke
Storage propertieswarehouse: ventilated, low temperature and dry; Store it separately from oxidants.
Extinguishing agentWater, carbon dioxide, dry, sandy soil.
Professional standardsTWA 10 mg/m³; STEL 20 mg/m3
DescriptionFerrocene, a metallocene, is a bright orangesalt-like crystals from alcohol with a camphor odor.Molecular weight = 186.05; Boiling point = 249 C (sublimes); Freezing/Melting point = 173 C. Decomposes at465 C. Hazard Identification (based on NFPA-704 MRating System): Health 2, Flammability 2, Reactivity 1.Insoluble in water.
Chemical PropertiesOrange, crystalline solid; camphor-like odor. Insoluble in water; soluble in benzene, ether, and alcohol. Iron content 29.4–30.6%.
Chemical PropertiesFerrocene, a metallocene, is a bright orange salt-like crystals from alcohol. Camphor odor.
Physical propertiesOrange crystals; camphor-like odor; melts at 172.5°C; vaporizes at 249°C; sublimes above 100°C; thermally stable above 500°C; insoluble in water; soluble in alcohol, ether and benzene; also soluble in dilute nitric acid and concentrated sulfuric acid forming a deep red solution that fluoresces.
UsesFerrocene is used as a catalyst for vulcanization, acceleration, and polymerization, as a chemical intermediate for polymeric compounds such as high temperature polymers, as an antiknock additive for gasoline, as a coating for missiles and satellites, and as a high-temperature lubricant.
UsesIn ultraviolet stabilizers and smoke depressants for polymers; to increase the burn rate of rocket propellants; to prevent erosion of space capsule shields; to improve the viscosity of lubricants; to catalyze polymerization reactions; to catalyze combustion; some derivatives used as hematinic agents
UsesAntiknock additive for gasoline; catalyst.
PreparationDicyclopentadienyliron may be obtained in a single-step synthetic route by heating cyclopentadiene with iron or iron pentacarbonyl at 300°C:
2C5H5 + Fe → (C5H5)2Fe
Also, it can be prepared by the reaction of iron(II) chloride with cyclopentadiene in the presence of an alkyl amine or a similar base.
Another convenient method of preparing this π-complex of iron is a twostep process in which the first step involves preparation of cyclopentadienyl Grignard reagent, such as 2,4-cyclopentadienylmagnesium bromide C5H5MgBr which may then be combined with ferric chloride to yield dicyclopentadienyl iron:
3C5H5MgBr + FeCl3 → (C5H5)2Fe + 3MgBrCl
Another general method of preparation involves the reaction of cyclopentadiene with sodium metal or sodium hydride in tetrahydrofuran (THF). Addition of iron(II) chloride to this solution forms the complex dicyclopentadienyliron:
2C5H6 + 2Na → 2C5H5ˉ + 2Na+ + H2
In 3:2 molar ratio of cyclopentadiene to sodium cyclopentene is obtained along with cyclopentadienidide (C5H5ˉ ) anion:
3C5H6 + 2Na → 2C5H5¯ + 2Na+ + C5H8
FeCl2 + 2C5H6Na → (C5H5)2Fe + 2NaCl
DefinitionA coordination compound of ferrous iron and two molecules of cyclopentadiene in which the organic portions have typically aromatic chemical properties. Its activity is intermediate between phenol and anisole. The first compound shown to have the “sandwich
Production MethodsFerrocene is produced from the reaction of cyclopentadiene with reduced iron in the presence of metal oxides. There is also a two-stage production process in which produced iron (II)oxide (stage 1) is reacted with cyclopentadiene.
Definitionferrocene: An orange-red crystallinesolid, Fe(C5H5)2; m.p. 173°C. Itcan be made by adding the ioniccompound Na+C5H5- (cyclopentadienylsodium, made from sodium andcyclopentadiene) to iron(III) chloride.In ferrocene, the two rings are parallel,with the iron ion sandwiched betweenthem (hence the namesandwich compound: see formula).The bonding is between pi orbitalson the rings and d-orbitals on theFe2+ ion. The compound can undergoelectrophilic substitution on theC5H5rings (they have some aromatic character).It can also be oxidized to theblue ion (C5H5)2Fe+. Ferrocene is the first of a class of similar complexescalled sandwich compounds. Its systematicname is di-π-cyclopentadienyliron(II).
General DescriptionOrange crystalline solid or orange-yellow powder. Sublimes above 212°F. Camphor odor.
Air & Water ReactionsSensitive to prolonged exposure to air and may be sensitive to light. Insoluble in water.
Reactivity ProfileFerrocene reacts violently with tetranitromethane. . Contact of tetranitromethane with Ferrocene under various conditions leads to violent explosion, [Trans. Met. Chem., 1979, 4, 207-208].
HazardModerate fire risk. Evolves toxic products on decomposition and heating.
Health HazardDicyclopentadienyl iron causes changes in blood parameters and hepatic cirrhosis.
The toxicological properties of dicyclopentadienyl iron have not been extensively investigated. However, it has been used as a preventive and therapeutic iron deficiency drug, and its utilization is listed as tolerable.
Fire HazardFlash point data for Ferrocene are not available. Ferrocene is probably combustible.
Flammability and ExplosibilityHighly flammable
Safety ProfilePoison by intraperitoneal and intravenous routes. Moderately toxic by ingestion. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. Flammable; reacts violently with NH4ClO4. When heated to decomposition it emits acrid smoke and irritating fumes.
Potential ExposureUsed as additive in fuel oil; antiknock agent in gasoline fuel; used in making rubber, silicone resins, high-temperature polymers and lubricants; interme diate for high-temperature polymers; as a smoke suppres sant and catalyst
First aidIf this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.
CarcinogenicityFerrocene was administered by intramuscular injection at a dose of 5175 mg/kg/2 years. By the criterion established by the Registry of Toxic Effects of Chemical Substances (RTECS), ferrocene was an equivocal tumorigenic agent and tumors were most evident at the site of multiple injections.
storageColor Code—Red: Flammability Hazard: Store ina flammable materials storage area. Prior to working withthis chemical you should be trained on its proper handlingand storage. Store in tightly closed containers in a cool,well-ventilated area away from oxidizers, ammonium perchlorate, tetranitromethane, mercury(II) nitrate, and heat.Sources of ignition, such as smoking and open flames, areprohibited where this chemical is used, handled, or stored ina manner that could create a potential fire or explosionhazard.
ShippingUN1325 Flammable solids, organic, n.o.s., Hazard Class: 4.1; Labels: 4.1-Flammable solid.
Purification MethodsPurify it by crystallisation from pentane or cyclohexane (also *C6H6 or MeOH can be used). It is moderately soluble in Et2O and sublimes readily above 100o. Crystallisation from EtOH gave material m 172.5-173o. [Wilkinson Org Synth Coll Vol IV 473 1963, Miller J Chem Soc 632 1952.] It has also been crystallised from methanol and sublimed in vacuo. [Saltiel et al. J Am Chem Soc 109 1209 1987, Beilstein 16 IV 1783.]
Structure and conformationX-ray diffraction studies show that in crystalline ferrocene (and in its substituted derivatives) the iron atom is "sandwiched" between the two cyclopentadienyl rings, these rings having the staggered configuration relative to each other (Fig. 16). The rings are parallel plane regular pentagons, all the C-C and Fe-C distances being equal. Electron diffraction studies show, however, that ferrocene has the eclipsed configuration in the vapour state.
ferrocene.jpg
IncompatibilitiesViolent reaction with ammonium per chlorate, tetranitromethane, mercury(II) nitrate. Incompa tible with oxidizers (chlorates, nitrates, peroxides, perman ganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides.
Peroxomonosulfuric acid. Decomposes @≧465 ℃.
Tag:Ferrocene(102-54-5) Related Product Information
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