Dodecane

Bezeichnung:Dodecane

CAS-Nr112-40-3

Englisch Name:Dodecane

CBNumberCB5678167

SummenformelC12H26

Molgewicht170.33

MOL-Datei112-40-3.mol

Dodecane physikalisch-chemischer Eigenschaften

Schmelzpunkt	-9.6 °C (lit.)
Siedepunkt	215-217 °C (lit.)
Dichte	0.75 g/mL at 25 °C (lit.)
Dampfdichte	5.96 (vs air)
Dampfdruck	1 mm Hg ( 47.8 °C)
Brechungsindex	n20/D 1.421(lit.)
Flammpunkt	181.4 °F
storage temp.	Store below +30°C.
Löslichkeit	Soluble in acetone, alcohol, chloroform, ether (Weast, 1986), and many hydrocarbons
pka	>14 (Schwarzenbach et al., 1993)
Aggregatzustand	Liquid
Farbe	Colorless
Wichte	0.749 (20/4℃)
Geruch (Odor)	alkane
Odor Threshold	0.11ppm
Explosionsgrenze	0.6%(V)
Wasserlöslichkeit	<0.1 g/100 mL at 25 ºC
Spezifische Wärmekapazität	Cp(liquid): 2.21 J/(g·K), at 25℃
Wärmeleitfähigkeit	0.135 W/(m·K) at 25 ℃
BRN	1697175
Henry's Law Constant	29.7(atmm³/mol) at 25 °C (calculated from water solubility and vapor pressure, Tolls et al., 2002) Interfacial tension
Dielectric constant	2.0（20℃）
Kosmetik-Inhaltsstoffe Funktionen	PERFUMING
InChI	1S/C12H26/c1-3-5-7-9-11-12-10-8-6-4-2/h3-12H2,1-2H3
InChIKey	SNRUBQQJIBEYMU-UHFFFAOYSA-N
SMILES	CCCCCCCCCCCC
LogP	6.100
Oberflächenspannung	24.07mN/m at 293.15K
CAS Datenbank	112-40-3(CAS DataBase Reference)
NIST chemische Informationen	n-Dodecane(112-40-3)
EPA chemische Informationen	Dodecane (112-40-3)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	65-66
S-Sätze:	62-60-36
RIDADR	NA 1993 / PGIII
WGK Germany	3
RTECS-Nr.	JR2125000
Selbstentzündungstemperatur	401 °F
TSCA	TSCA listed
HazardClass	CBL
HS Code	29011090
Speicherklasse	10 - Combustible liquids
Hazard Classifications	Asp. Tox. 1
Giftige Stoffe Daten	112-40-3(Hazardous Substances Data)
Toxizität	mouse,LDLo,intravenous,2672mg/kg (2672mg/kg),BEHAVIORAL: ALTERED SLEEP TIME (INCLUDING CHANGE IN RIGHTING REFLEX),Acta Pharmacologica et Toxicologica. Vol. 37, Pg. 56, 1975.

Gefahreninformationscode (GHS)

Dodecane Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R65:Gesundheitsschädlich: kann beim Verschlucken Lungenschäden verursachen.
R66:Wiederholter Kontakt kann zu spröder oder rissiger Haut führen.
S-Sätze Betriebsanweisung:
S62:Bei Verschlucken kein Erbrechen herbeiführen. Sofort ärztlichen Rat einholen und Verpackung oder dieses Etikett vorzeigen.
S60:Dieses Produkt und sein Behälter sind als gefährlicher Abfall zu entsorgen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
Chemische Eigenschaften
colourless liquid
Chemische Eigenschaften
Dodecane, C12H26, is a flammable, colorless liquid with specific gravity 0.749. It occurs in the paraffin fraction of petroleum. Dodecane is released to the environment by wastewater and spills from laboratory and general use of paraffins, petroleum oils, and tars.
Physikalische Eigenschaften
Clear, colorless liquid with a mild aliphatic hydrocarbon odor. An odor threshold concentration of 620 ppb_v was reported by Nagata and Takeuchi (1990).
Verwenden
Dodecane is a component of gasoline and is used as solvent, in organic synthesis, in jet fuel research, as a distillation chaser, and in the rubber and paper processing industries.
Verwenden
Solvent; jet fuel research; rubber industry; manufacturing paraffin products; paper processing industry; standardized hydrocarbon; distillation chaser; gasoline component; organic synthesis.
Verwenden
n-Dodecane is used as a solvent and a distillation chaser. It finds application as a diluent for tributyl phosphate (TBP) in reprocessing plants and as a possible surrogate for kerosene-based fuels in jet. It is an active component of scintillator as well as used in lubricants and greases.
Vorbereitung Methode
Dodecane is isolated from the kerosene and gas oil fractions of crude oil by selective adsorption and subsequent desorption to yield mixtures of paraffins that can be separated by fractional distillation.
Definition
ChEBI: A straight-chain alkane with 12 carbon atoms. It has been form the essential oils of various plants including Zingiber officinale (ginger).
Synthesis Reference(s)
The Journal of Organic Chemistry, 44, p. 1014, 1979 DOI: 10.1021/jo01320a033
Tetrahedron Letters, 31, p. 4681, 1990 DOI: 10.1016/S0040-4039(00)97705-0
Allgemeine Beschreibung
Clear colorless liquid.
Air & Water Reaktionen
Flammable. Insoluble in water.
Reaktivität anzeigen
Saturated aliphatic hydrocarbons, such as Dodecane, may be incompatible with strong oxidizing agents like nitric acid. Charring of the hydrocarbon may occur followed by ignition of unreacted hydrocarbon and other nearby combustibles. In other settings, aliphatic saturated hydrocarbons are mostly unreactive. They are not affected by aqueous solutions of acids, alkalis, most oxidizing agents, and most reducing agents. When heated sufficiently or when ignited in the presence of air, oxygen or strong oxidizing agents, they burn exothermically to produce carbon dioxide and water.
Brandgefahr
Dodecane is combustible.
Carcinogenicity
Dodecane has been shown to be a promoter of skin carcinogenesis for benzo[a]pyrene and ultraviolet radiation.
Source
Constituent in paraffin fraction of petroleum. Dodecane may be present in stormwater runoff from asphalted roadways and general use of petroleum oils and tars (quoted, Verschueren). Schauer et al. (1999) reported dodecane in diesel fuel at a concentration of 15,500 μg/g and in a diesel-powered medium-duty truck exhaust at an emission rate of 503 μg/kg.
California Phase II reformulated gasoline contained dodecane at a concentration of 136 mg/kg. Gas-phase tailpipe emission rates from gasoline-powered automobiles with and without catalytic converters were 83.9 and 1,770 μg/km, respectively (Schauer et al., 2002).
Identified as one of 140 volatile constituents in used soybean oils collected from a processing plant that fried various beef, chicken, and veal products (Takeoka et al., 1996). Also identified among 139 volatile compounds identified in cantaloupe (Cucumis melo var. reticulates cv. Sol Real) using an automated rapid headspace solid phase microextraction method (Beaulieu and Grimm, 2001).
Environmental Fate
Biological. Dodecane may biodegrade in two ways. The first is the formation of dodecyl hydroperoxide which decomposes to 1-dodecanol. The alcohol is oxidized forming dodecanoic acid. The other pathway involves dehydrogenation to 1-dodecene, which may react with water, giving 1-dodecanol (Dugan, 1972).
Estimated half-lives of dodecane (0.3 μg/L) from an experimental marine mesocosm during the spring (8–16 °C), summer (20–22 °C), and winter (3–7 °C) were 1.1, 0.7, and 3.6 d, respectively (Wakeham et al., 1983).
Chemical/Physical. Complete combustion in air yields carbon dioxide and water. Dodecane will not hydrolyze because it has no hydrolyzable functional group.
läuterung methode
Pass it through a column of Linde type 13X molecular sieves. Store it in contact with, and distil it from sodium. Pass through a column of activated silica gel. It has been crystallised from diethyl ether at -60o. Unsaturated dry material which remained after passage through silica gel has been removed by catalytic hydrogenation (Pt2O) at 45lb/in2 (3.06 atmospheres), followed by fractional distillation under reduced pressure [Zook & Goldey J Am Chem Soc 75 3975 1953]. It has also purified by partial crystallisation from the melt. [Beilstein 1 IV 498.]

Dodecane Upstream-Materialien And Downstream Produkte

Dodecane Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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