Pentan-1-ol

Bezeichnung:Pentan-1-ol

CAS-Nr71-41-0

Englisch Name:1-Pentanol

CBNumberCB7158872

SummenformelC5H12O

Molgewicht88.15

MOL-Datei71-41-0.mol

Synonyma

Pentan-1-ol

n-Amylalkohol

n-Butylcarbinol

Pentan-1-ol physikalisch-chemischer Eigenschaften

Schmelzpunkt	-78 °C (lit.)
Siedepunkt	136-138 °C (lit.)
Dichte	0.811 g/mL at 25 °C (lit.)
Dampfdichte	3 (vs air)
Dampfdruck	1 mm Hg ( 13.6 °C)
FEMA	2056 \| AMYL ALCOHOL
Brechungsindex	n20/D 1.409(lit.)
Flammpunkt	120 °F
storage temp.	Store below +30°C.
Löslichkeit	water: soluble22.8g/L at 25°C
Aggregatzustand	Liquid
pka	15.24±0.10(Predicted)
Farbe	APHA: ≤30
Relative polarity	0.568
Säure-Base-Indikators(pH-Indikatoren)	7
Geruch (Odor)	Pleasant 0.1 ppm
Geruchsart	fermented
Odor Threshold	0.1ppm
Explosionsgrenze	10%, 100°F
Wasserlöslichkeit	22 g/L (22 ºC)
Merck	14,7118
JECFA Number	88
BRN	1730975
Dielectric constant	15.8（20℃）
Stabilität	Stable. Flammable. Incompatible with strong oxidizing agents.
LogP	1.51
CAS Datenbank	71-41-0(CAS DataBase Reference)
NIST chemische Informationen	1-Pentanol(71-41-0)
EPA chemische Informationen	1-Pentanol (71-41-0)

Sicherheit

Kennzeichnung gefährlicher	Xn,F,Xi
R-Sätze:	10-20-37-66-37/38
S-Sätze:	46-36/37
RIDADR	UN 1105 3/PG 3
OEB	A
OEL	TWA: 100.0 ppm; 360.0 mg/m3, STEL: 125.0 ppm; 450.0 mg/m3
WGK Germany	1
RTECS-Nr.	SB9800000
Selbstentzündungstemperatur	572 °F
Hazard Note	Irritant/Flammable
TSCA	Yes
HS Code	2905 19 00
HazardClass	3
PackingGroup	II
Giftige Stoffe Daten	71-41-0(Hazardous Substances Data)
Toxizität	LD50 orally in Rabbit: 3670 mg/kg LD50 dermal Rabbit 2306 mg/kg

Gefahreninformationscode (GHS)

1-Pentanol Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
PHYSIKALISCHE GEFAHREN
Die Dämpfe sind schwerer als Luft und können sich am Boden ausbreiten. Fernzündung möglich. Die Dämpfe mischen sich leicht mit Luft. Bildung explosionsfähiger Gemische.
CHEMISCHE GEFAHREN
Reagiert sehr heftig mit Oxidationsmitteln. Greift viele Alkali- und Erdalkalimetalle unter Bildung entzündlichen/explosionsfähigen Gases an (Wasserstoff, s. ICSC-Nr. 0001.
ARBEITSPLATZGRENZWERTE
TLV nicht festgelegt (ACGIH 2005).
MAK: 20 ppm, 73 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(4); Schwangerschaft: Gruppe C (DFG 2008).
AUFNAHMEWEGE
Aufnahme in den Körper durch Inhalation der Dämpfe oder des Aerosols, über die Haut und durch Verschlucken.
INHALATIONSGEFAHREN
Nur ungenügende Angaben vorhanden über die Geschwindigkeit, mit der eine gesundheitsschädliche Konzentration in der Luft beim Verdampfen bei 20°C erreicht wird.
WIRKUNGEN BEI KURZZEITEXPOSITION
WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz reizt die Augen, die Haut und die Atemwege. Möglich sind Auswirkungen auf das Zentralnervensystem mit nachfolgender Depression. Exposition gegenüber sehr hohen Konzentrationen kann zu Bewusstlosigkeit führen.
WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION
Wiederholter oder andauernder Hautkontakt kann Dermatitis hervorrufen.
LECKAGE
Zündquellen entfernen. Ausgelaufene Flüssigkeit in abdichtbaren Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. NICHT in die Kanalisation spülen. Persönliche Schutzausrüstung: Atemschutzfilter für organische Gase und Dämpfe.
R-Sätze Betriebsanweisung:
R10:Entzündlich.
R20:Gesundheitsschädlich beim Einatmen.
R37:Reizt die Atmungsorgane.
R66:Wiederholter Kontakt kann zu spröder oder rissiger Haut führen.
S-Sätze Betriebsanweisung:
S46:Bei Verschlucken sofort ärztlichen Rat einholen und Verpackung oder Etikett vorzeigen.
Beschreibung
1-Pentanol is a monohydroxy alcohol. It is a colorless liquid with a characteristic odor. Its combustion properties have been studied as it shows promising features to be an alternative to gasoline and diesel fuels. The conversion of 1-pentanol to di-n-pentyl ether (DNPE) in liquid phase at 423K in a batch reactor using ion exchange resins as catalysts.
Chemische Eigenschaften
1-Pentanol is a clear, colorless liquid at ambient temperatures, it has a characteristic fusel-like sweet and pleasant odor and burning taste. The air odor detection level (lowest perceptible level) was reported as 10 ppm for 1-pentanol.
Occurrence
Reported found in banana, sweet cherry, cranberry, bourbon, vanilla, rice bran and Brazil nut.
Verwenden
Raw material for pharmaceutical preparations;organic synthesis solvent.
1-Pentanol is used as a key starting material in the production of dichloro-acetic acid pentyl ester, 2-methyltetrahydrofuran, di-n-penyl ether (DNPE), pentyl butyrate and amyl acetate. As a solvent, it is used for coating CDs and DVDs. It has been considered to be a replacement for gasoline and diesel fuels due to its combustion properties. Further, it is used as a reagent to prepare derivatives of ferulic acid and caffeic acid, which shows anticancer properties.
Verwenden
1-Pentanol may be used as a cosurfactant in the water-in-oil mixed surfactant microemulsions.
Vorbereitung Methode
1-Pentanol is made primarily by the oxo process, which involves the reaction of butenes with carbon monoxide and hydrogen in the presence of a catalyst, followed by hydrogenation. 1-Pentanol is used as a solvent, as a chemical intermediate for esters, and as a food additive and flavoring substance. The primary routes of industrial exposure are by dermal contact and inhalation.
Definition
ChEBI: An alkyl alcohol that is pentane in which a hydrogen of one of the methyl groups is substituted by a hydroxy group. It has been isolated from Melicope ptelefolia.
Aroma threshold values
Detection at 1.6 to 70 ppm
Taste threshold values
Taste characteristics at 50 ppm: intense fusel, fermented, bready and cereal with a fruity undertone
Air & Water Reaktionen
1-Pentanol is highly flammable. Soluble in water.
Reaktivität anzeigen
Moderately toxic, flammable if exposed to powerful oxidizers. Incompatible with oxidizing materials, hydrogen trisulfide [Sax, 9th ed., 1996, p. 224].
Hazard
Lower explosive level in air 1.2% by volume. Moderate fire risk.
Health Hazard
Irritation of skin, eyes, and respiratory tract; headache and vertigo; dyspnea and cough; nausea, vomiting, and diarrhea. Double vision, deafness, delirium, and occasionally fatal poisoning, preceded by severe nervous symptoms, have been reported. Coma, glycosuria, and methemoglobinemia can occur.
Brandgefahr
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Sicherheitsprofil
1-Pentanol is moderately toxic by ingestion and skin contact. An eye and upper respiratory irritant by inhalation. A severe skin and eye irritant. Ingestion can cause headache, nausea, vomiting, delirium, and methemoglobin formation. Mutation data reported. Extremely flammable if exposed to heat, flame, or powerful oxiduers. Moderately explosive when exposed to flame. Incompatible with oxidzing materials, hydrogen trisulfide. To fight fire, use alcohol foam, dry chemical.
mögliche Exposition
(n-isomer); Suspected reprotoxic hazard, Primary irritant (w/o allergic reaction), (iso-, primary): Possible risk of forming tumors, Primary irritant (w/o allergic reaction), (sec-, active primary-, and other isomers) Primary irritant (w/o allergic reaction). Used as a solvent in organic synthesis and synthetic flavoring, pharmaceuticals, corrosion inhibitors; making plastics and other chemicals; as a flotation agent. The (n-isomer) is used in preparation of oil additives, plasticizers, synthetic lubricants, and as a solvent.
Erste Hilfe
Skin contact contributes significantly to overallexposure. If 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.
Lager
Color Code—Red: Flammability Hazard: Store ina flammable liquid storage area or approved cabinet awayfrom ignition sources and corrosive and reactive materials.Prior to working with this chemical you should be trained onits proper handling and storage. Before entering confinedspace where amyl alcohols may be present, check to makesure that an explosive concentration does not exist. Store intightly closed containers in a cool, well-ventilated area awayfrom strong oxidizers; strong acids and hydrogen trifluoride;since violent reactions occur. Metal containers involving thetransfer of this chemical should be grounded and bonded.Where possible, automatically pump liquid from drums orother storage containers to process containers. Drums mustbe equipped with self-closing valves, pressure vacuumbungs; and flame arresters. Use only nonsparking tools andequipment, especially when opening and closing containersof this chemical. Sources of ignition, such as smoking andopen flames, are prohibited where this chemical is used,handled, or stored in a manner that could create a potentialfire or explosion hazard.
Versand/Shipping
UN2811 Pentanols, Hazard Class: 3; Labels: 3- Flammable liquid. UN1987 Alcohols, n.o.s., Hazard Class: 3; Labels: 3-Flammable liquid.
läuterung methode
Dry 1-pentanol with anhydrous K2CO3 or CaSO4, filter and fractionally distil it. It has also been treated with 1-2% of sodium and heated at reflux for 15hours to remove water and chlorides. Traces of water can be removed from the near-dry alcohol by refluxing it with a small amount of sodium in the presence of 2-3% n-amyl phthalate or succinate followed by distillation (see ethanol). Small amounts of amyl alcohol have been purified by esterifying with p-hydroxybenzoic acid, recrystallising the ester from CS2, saponifying with ethanolic-KOH, drying with CaSO4 and fractionally distilling [Olivier Recl Trav Chim Pays-Bas 55 1027 1936]. [Beilstein 1 IV 1640.]
Toxicity evaluation
Moderately toxic by ingestion. Vapors may irritate skin and eyes.
Inkompatibilitäten
Forms an explosive mixture with air. Contact with strong oxidizers and hydrogen trisulfide may cause fire and explosions. Incompatible with strong acids. Violent reaction with alkaline earth metals forming hydrogen, a flammable gas.
Waste disposal
Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

1-Pentanol Upstream-Materialien And Downstream Produkte

Pentan-1-ol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

71-41-0, 1-Pentanol Verwandte Suche:

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