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Isobutanol Produkt Beschreibung

2-Methyl-1-propanol Struktur
78-83-1
CAS-Nr.
78-83-1
Bezeichnung:
Isobutanol
Englisch Name:
2-Methyl-1-propanol
Synonyma:
IBA;FEMA 2179;i-Butanol;sobutanol;ISOBUTANOL;iso-C4H9OH;BUTANOL-ISO;femanumber2179;ISOBUTANOL(SG);Isobutanol4x1L
CBNumber:
CB3158955
Summenformel:
C4H10O
Molgewicht:
74.12
MOL-Datei:
78-83-1.mol

Isobutanol Eigenschaften

Schmelzpunkt:
−108 °C(lit.)
Siedepunkt:
108 °C(lit.)
Dichte
0.803 g/mL at 25 °C(lit.)
Dampfdichte
2.55 (vs air)
Dampfdruck
8 mm Hg ( 20 °C)
Brechungsindex
n20/D 1.396(lit.)
FEMA 
2179 | ISOBUTYL ALCOHOL
Flammpunkt:
82 °F
storage temp. 
Flammables area
Löslichkeit
water: miscible70g/L at 20°C
Aggregatzustand
Solid
pka
>14 (Schwarzenbach et al., 1993)
Farbe
APHA: ≤10
Relative polarity
0.552
PH
7 (80g/l, H2O, 20℃)
Geruch (Odor)
Slightly suffocating; nonresidual alcoholi
Explosionsgrenze
1.5-12%(V)
Wasserlöslichkeit
95 g/L (20 ºC)
maximale Wellenlänge (λmax)
λ: 260 nm Amax: 0.10
λ: 280 nm Amax: 0.06
JECFA Number
251
Merck 
14,5131
BRN 
1730878
Henry's Law Constant
20.0 at 30.00 °C, 72.2 at 50.00 °C, 133 at 60.00 °C, 216 at 70.00 °C, 330 at 80.00 °C (headspace- GC, Hovorka et al., 2002)
Expositionsgrenzwerte
TWA 300 mg/m3 (100 ppm) NIOSH, 150 mg/m3 (50 ppm) (ACGIH); IDLH 8000 ppm.
Stabilität:
Stable. Flammable. Incompatible with strong oxidizing agents, aluminium.
InChIKey
ZXEKIIBDNHEJCQ-UHFFFAOYSA-N
CAS Datenbank
78-83-1(CAS DataBase Reference)
NIST chemische Informationen
1-Propanol, 2-methyl-(78-83-1)
EPA chemische Informationen
1-Propanol, 2-methyl-(78-83-1)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher Xi
R-Sätze: 10-37/38-41-67
S-Sätze: 13-26-37/39-46-7/9
RIDADR  UN 1212 3/PG 3
WGK Germany  1
RTECS-Nr. NP9625000
Selbstentzündungstemperatur 801 °F
TSCA  Yes
HazardClass  3
PackingGroup  III
HS Code  29051990
Giftige Stoffe Daten 78-83-1(Hazardous Substances Data)
Toxizität LD50 orally in rats: 2.46 g/kg (Smyth)
Bildanzeige (GHS)
Alarmwort Achtung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H226 Flüssigkeit und Dampf entzündbar. Entzündbare Flüssigkeiten Kategorie 3 Warnung
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung P264, P280, P302+P352, P321,P332+P313, P362
H318 Verursacht schwere Augenschäden. Schwere Augenschädigung Kategorie 1 Achtung P280, P305+P351+P338, P310
H335 Kann die Atemwege reizen. Spezifische Zielorgan-Toxizität (einmalige Exposition) Kategorie 3 (Atemwegsreizung) Warnung
H336 Kann Schläfrigkeit und Benommenheit verursachen. Spezifische Zielorgan-Toxizität (einmalige Exposition) Kategorie 3 (Schläfrigkeit und Benommenheit) Warnung P261, P271, P304+P340, P312,P403+P233, P405, P501
Sicherheit
P210 Von Hitze, heißen Oberflächen, Funken, offenen Flammen und anderen Zündquellenarten fernhalten. Nicht rauchen.
P261 Einatmen von Staub vermeiden.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P303+P361+P353 BEI BERÜHRUNG MIT DER HAUT (oder dem Haar): Alle kontaminierten Kleidungsstücke sofort ausziehen. Haut mit Wasser abwaschen oder duschen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.
P405 Unter Verschluss aufbewahren.
P403+P235 An einem gut belüfteten Ort aufbewahren. Kühl halten.

Isobutanol Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.

CHEMISCHE GEFAHREN

Reagiert mit Aluminium, starken Oxidationsmitteln wie Chromtrioxid; Bildung brennbarer/explosionsfähiger Gase (z.B. Wasserstoff, ICSC-Nr. 0001). Greift einige Kunststoff-, Gummi- und Beschichtungsarten an.

ARBEITSPLATZGRENZWERTE

TLV: 50 ppm (als TWA); (ACGIH 2005).
MAK: 100 ppm, 310 mg/m? Spitzenbegrenzung: überschreitungsfaktor I(1); Schwangerschaft: Gruppe C; (DFG 2005).

AUFNAHMEWEGE

Aufnahme in den Körper durch Inhalation der Dämpfe und durch Verschlucken.

INHALATIONSGEFAHREN

Beim Verdampfen bei 20°C tritt langsam eine gesundheitsschädliche Kontamination der Luft ein.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz reizt die Haut und reizt stark die Augen Exposition weit oberhalb der Arbeitsplatzgrenzwerte kann Bewusstseinstrübung verursachen. Verschlucken kann zur Aufnahme in der Lunge führen; Gefahr der Aspirationspneumonie.

WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

Die Flüssigkeit entfettet die Haut.

LECKAGE

Persönliche Schutzausrüstung: Atemschutzfilter für organische Gase und Dämpfe. Ausgelaufene Flüssigkeit in abdichtbaren Behältern sammeln. Reste mit Sand oder inertem Absorptionsmittel aufnehmen und an einen sicheren Ort bringen. Reste mit viel Wasser wegspülen.

R-Sätze Betriebsanweisung:

R10:Entzündlich.
R37/38:Reizt die Atmungsorgane und die Haut.
R41:Gefahr ernster Augenschäden.
R67:Dämpfe können Schläfrigkeit und Benommenheit verursachen.

S-Sätze Betriebsanweisung:

S13:Von Nahrungsmitteln, Getränken und Futtermitteln fernhalten.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S46:Bei Verschlucken sofort ärztlichen Rat einholen und Verpackung oder Etikett vorzeigen.
S7/9:Behälter dicht geschlossen an einem gut gelüfteten Ort aufbewahren.

Beschreibung

Isobutyl alcohol has a disagreeable odor. May be prepared from isobutylene; by reduction of isobutyraldehyde with sodium amalgam or in the presence of a catalyst; by fermentation of isobutyraldehyde; isolated during fermentation of carbohydrates.

Chemische Eigenschaften

Isobutyl alcohol has a penetrating, wine-like, disagreeable odor

Physikalische Eigenschaften

Clear, colorless, oily liquid with a sweet, musty odor. Burning taste. The average least detectable odor threshold concentration in water at 60 °C was 0.36 mg/L (Alexander et al., 1982). Experimentally determined detection and recognition odor threshold concentrations were 2.0 mg/m3 (660 ppbv) and 5.4 mg/m3 (1.8 ppmv), respectively (Hellman and Small, 1974). An odor threshold concentration of 11 ppbv was reported by Nagata and Takeuchi (1990).

Occurrence

Reported found in the essential oils of Java citronella, tea, Eucalyptus amygdalina. Also reported in apple and currant aromas; in apricots, banana, sweet cherry, orange, grapefruit and tangerine juice, berries, guava, grapes, melon, papaya, pear, pineapple, leek, peas, rutabaga, tomato, ginger, spearmint oil, vinegar, breads, cheeses, milk, fish oil, meats, hop oil, beer, cognac, rum, whiskies, sherry, cider, grape wines, cocoa, tea, coffee, nuts, oats, soybean, avocado, olive, passion fruit, plum, beans, mango, starfruit, bantu beer, plum brandy, tamarind, fig, cardamom, gin, quince, radish, prickly pear, litchi, sukiyaki, lovage leaf, buckwheat, sweet corn, laurel, malt, wort, elderberry juice, dried bonito, krill, kiwifruit, loquat, fruit brandies and wines, endive, shrimp, truffle, red currants, Roman chamomile oil and other sources.

Verwenden

Isobutanol is widely used in the productionof isobutyl acetate for lacquers, isobutylphthalate for plasticizers; as a solvent forplastics, textiles, oils, and perfumes; and asa paint remover.

Verwenden

Isobutyl Alcohol is a reagent used in organic reactions. It is used in the synthesis of new fluorinating reagents. It is also used in the lipase-catalyzed production of biodiesel as an energy source.

Verwenden

manufacture of esters for fruit flavoring essences; solvent in paint, varnish removers.

Definition

ChEBI: An alkyl alcohol that is propan-1-ol substituted by a methyl group at position 2.

synthetische

From isobutylene; by reduction of isobutyraldehyde with sodium amalgam or in the presence of a catalyst; by fermentation of isobutyraldehyde; isolated during fermentation of carbohydrates

Aroma threshold values

Detection: 360 ppb to 3.3 ppm

Allgemeine Beschreibung

A clear colorless liquid with a sweet odor. Flash point 85 - 100°F. Less dense than water. Vapors heavier than air.

Air & Water Reaktionen

Highly flammable. Soluble in water.

Reaktivität anzeigen

2-Methyl-1-propanol is an alcohol. Flammable and/or toxic gases are generated by the combination of alcohols with alkali metals, nitrides, and strong reducing agents. They react with oxoacids and carboxylic acids to form esters plus water. Oxidizing agents convert them to aldehydes or ketones. Alcohols exhibit both weak acid and weak base behavior. They may initiate the polymerization of isocyanates and epoxides. 2-Methyl-1-propanol is incompatible with strong oxidizers.

Hazard

Flammable, moderate fire risk. Strong irritant.

Health Hazard

Inhalation causes eye and throat irritation andheadache. Ingestion may cause depression ofthe central nervous system. It is an irritantto the skin, causing cracking. Target organsare the eyes, skin, and respiratory system.
LD50 value, oral (rabbits): 3750 mg/kg.

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.

Chemische Reaktivität

Reactivity with Water: No reaction; Reactivity with Common Materials: No reactions; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

mögliche Exposition

Butyl alcohols are used as solvents for paints, lacquers, varnishes, natural and synthetic resins, gums, vegetable oils, dyes, camphor, and alkaloids. They are also used as an intermediate in the manufacture of pharmaceuticals and chemicals; in the manufacture of artificial leather, safety glass; rubber and plastic cements, shellac, raincoats, photographic films, perfumes; and in plastic fabrication.

Source

A product of whiskey fermentation (quoted, Verschueren, 1983). Isobutyl alcohol also occurs in tea leaves and java cintronella plants (Duke, 1992).

Environmental Fate

Biological. Bridié et al. (1979) reported BOD and COD values of 0.41 and 2.46 g/g using filtered effluent from a biological sanitary waste treatment plant. These values were determined using a standard dilution method at 20 °C for a period of 5 d. When a sewage seed was used in a separate screening test, a BOD value of 1.63 g/g was obtained. Heukelekian and Rand (1955) reported a 5-d BOD value of 1.66 g/g which is 64.0% of the ThOD value of 2.59 g/g. Using the BOD technique to measure biodegradation, the mean 5-d BOD value (mM BOD/mM isobutyl alcohol) and ThOD were 3.92 and 65.3%, respectively (Vaishnav et al., 1987).
Chemical/Physical. Isobutyl alcohol will not hydrolyze because it does not have a hydrolyzable functional group (Kollig, 1993).
At an influent concentration of 1,000 mg/L, treatment with GAC resulted in an effluent concentration of 581 mg/L. The adsorbability of the carbon used was 84 mg/g carbon (Guisti et al., 1974).

Versand/Shipping

UN1120 Butanols, Hazard Class: 3; Labels: 3— Flammable liquid. UN1212 Isobutanol or Isobutyl alcohol, Hazard Class: 3; Labels: 3—Flammable liquid

läuterung methode

Isobutanol is dried by refluxing with CaO and BaO for several hours, followed by treatment with calcium or aluminium amalgam, then fractional distilling it from sulfanilic or tartaric acids. More exhaustive purifications involve formation of phthalate or borate esters. Heating it with phthalic anhydride gives the acid phthalate which, after crystallisation to constant melting point (m 65o) from pet ether, is hydrolysed with aqueous 15% KOH. The alcohol is distilled off as the water azeotrope and dried (K2CO3, then anhydrous CuSO4), and finally magnesium turnings, followed by fractional distillation. [Hückel & Ackermann J Prakt Chem 136 15 1933.] The borate ester is formed by heating the dried alcohol for 6hours in an autoclave at 160-175o with a quarter of its weight of boric acid. After fractional distillation under vacuum, the ester is hydrolysed by heating for a short time with aqueous alkali and the alcohol is dried with CaO and distilled. [Michael et al. J Am Chem Soc 38 653 1916.] Alternatively dry the alcohol with K2CO3, CaSO4 or CaCl2, filter and fractionally distil it. For further drying, the redistilled alcohol can be refluxed with the appropriate alkyl phthalate or succinate as described under ethanol. [Beilstein 1 IV 1588.]

Inkompatibilitäten

Butyl alcohols may form explosive mixture with air. In all cases they are Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Attacks some plastics, rubber and coatings. n-Butanol is incompatible with strong acids; halogens, caustics, alkali metals; aliphatic amines; isocyanates. sec-Butanol forms an explosive peroxide in air. Ignites with chromium trioxide. Incompatible with strong oxidizers; strong acids; aliphatic amines; isocyanates, organic peroxides. tert-Butanol is incompatible with strong acids (including mineral acid), including mineral acids; strong oxidizers or caustics, aliphatic amines; isocyanates, alkali metals (i.e., lithium, sodium, potassium, rubidium, cesium, francium). isoButanol is incompatible with strong acids; strong oxidizers; caustics, aliphatic amines; isocyanates, alkali metals and alkali earth. May react with aluminum at high temperatur

Waste disposal

Incineration, or bury absorbed waste in an approved land fill.

Isobutanol Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Isobutanol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 278)Lieferanten
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78-83-1(Isobutanol)Verwandte Suche:


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