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    Valeriansure Produkt Beschreibung

    Valeric acid Struktur
    109-52-4
    CAS-Nr.
    109-52-4
    Bezeichnung:
    Valeriansure
    Englisch Name:
    Valeric acid
    Synonyma:
    NA 1760;valeric;FEMA 3101;n-C4H9COOH;N-VALERATE;Pentansαure;VALERIC ACID;PENTANE ACID;Valeric Acld;Baldriansαure
    CBNumber:
    CB2309387
    Summenformel:
    C5H10O2
    Molgewicht:
    102.13
    MOL-Datei:
    109-52-4.mol

    Valeriansure Eigenschaften

    Schmelzpunkt:
    −20-−18 °C(lit.)
    Siedepunkt:
    110-111 °C10 mm Hg(lit.)
    Dichte
    0.939 g/mL at 25 °C(lit.)
    Dampfdichte
    3.5 (vs air)
    Dampfdruck
    0.15 mm Hg ( 20 °C)
    FEMA 
    3101 | VALERIC ACID
    Brechungsindex
    n20/D 1.408(lit.)
    Flammpunkt:
    192 °F
    storage temp. 
    Store below +30°C.
    L?slichkeit
    40g/l
    Aggregatzustand
    Liquid
    pka
    4.84(at 25℃)
    Farbe
    Clear colorless to pale yellow
    PH
    2.7 (40g/l, H2O, 20℃)
    Odor Threshold
    0.000037ppm
    Explosionsgrenze
    1.8-7.3%(V)
    Wasserl?slichkeit
    40 g/L (20 ºC)
    JECFA Number
    90
    Merck 
    14,9904
    BRN 
    969454
    CAS Datenbank
    109-52-4(CAS DataBase Reference)
    NIST chemische Informationen
    Pentanoic acid(109-52-4)
    EPA chemische Informationen
    Valeric acid (109-52-4)
    Sicherheit
    • Risiko- und Sicherheitserkl?rung
    • Gefahreninformationscode (GHS)
    Kennzeichnung gef?hrlicher C
    R-S?tze: 34-52/53
    S-S?tze: 26-36-45-61
    RIDADR  UN 3265 8/PG 3
    WGK Germany  1
    RTECS-Nr. YV6100000
    13
    Selbstentzündungstemperatur 707 °F
    TSCA  Yes
    HazardClass  8
    PackingGroup  III
    HS Code  29156090
    Giftige Stoffe Daten 109-52-4(Hazardous Substances Data)
    Toxizit?t LD50 i.v. in mice: 1290 ±53 mg/kg (Or, Wretlind)
    Bildanzeige (GHS)
    Alarmwort Achtung
    Gefahrenhinweise
    Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
    H227 Combustible liquid Flammable liquids Category 4 Warnung P210, P280, P370+P378, P403+P235,P501
    H290 Kann gegenüber Metallen korrosiv sein. Korrosiv gegenüber Metallen Kategorie 1 Warnung P234, P390, P404
    H302 Gesundheitssch?dlich bei Verschlucken. Akute Toxizit?t oral Kategorie 4 Warnung P264, P270, P301+P312, P330, P501
    H314 Verursacht schwere Ver?tzungen der Haut und schwere Augensch?den. ?tzwirkung auf die Haut Kategorie 1B Achtung P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
    H412 Sch?dlich für Wasserorganismen, mit langfristiger Wirkung. Langfristig (chronisch) gew?ssergef?hrdend Kategorie 3 P273, P501
    Sicherheit
    P234 Nur im Originalbeh?lter aufbewahren.
    P260 Dampf/Aerosol/Nebel nicht einatmen.
    P264 Nach Gebrauch gründlich waschen.
    P264 Nach Gebrauch gründlich waschen.
    P270 Bei Gebrauch nicht essen, trinken oder rauchen.
    P271 Nur im Freien oder in gut belüfteten R?umen verwenden.
    P273 Freisetzung in die Umwelt 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 M?glichkeit entfernen. Weiter spülen.

    Valeriansure Chemische Eigenschaften,Einsatz,Produktion Methoden

    ERSCHEINUNGSBILD

    FARBLOSE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.

    PHYSIKALISCHE GEFAHREN

    Die D?mpfe sind schwerer als Luft.

    CHEMISCHE GEFAHREN

    Schwache S?ure.

    ARBEITSPLATZGRENZWERTE

    TLV nicht festgelegt (ACGIH 2005).
    MAK nicht festgelegt (DFG 2005).

    AUFNAHMEWEGE

    Aufnahme in den K?rper durch Inhalation und durch Verschlucken.

    INHALATIONSGEFAHREN

    Nur ungenügende Angaben vorhanden über die Geschwindigkeit, mit der eine gesundheitssch?dliche Konzentration in der Luft beim Verdampfen bei 20°C erreicht wird.

    WIRKUNGEN BEI KURZZEITEXPOSITION

    WIRKUNGEN BEI KURZZEITEXPOSITION:
    Die Substanz ver?tzt die Augen, die Haut und die Atemwege. ?tzend beim Verschlucken.

    LECKAGE

    Ausgelaufene Flüssigkeit in abgedeckten Beh?ltern sammeln. Verschüttete Flüssigkeit mit viel Wasser wegspülen. NICHT in die Umwelt gelangen lassen.

    R-S?tze Betriebsanweisung:

    R34:Verursacht Ver?tzungen.
    R52/53:Sch?dlich für Wasserorganismen, kann in Gew?ssern l?ngerfristig sch?dliche Wirkungen haben.

    S-S?tze Betriebsanweisung:

    S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
    S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
    S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
    S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.

    Beschreibung

    Valeric acid, or pentanoic acid, is a straight - chain alkyl carboxylic acid with the chemical formula C5H10O2. Like other lowmolecular- weight carboxylic acids, it has a very unpleasant odor. It is found naturally in the perennial flowering plant valerian (Valeriana officinalis), from which it gets its name. Its primary use is in the synthesis of its esters. Volatile esters of valeric acid tend to have pleasant odors and are used in perfumes and cosmetics. Ethyl valerate and pentyl valerate are used as food additives because of their fruity flavors.
    Valeric acid appears similar in structure to GHB and the neurotransmitter GABA in that it is a short-chain carboxylic acid, although it lacks the alcohol and amine functional groups that contribute to the biological activities of GHB and GABA, respectively. It differs from valproic acid simply by lacking a 3- carbon side - chain.

    Chemische Eigenschaften

    Valeric acid has an unpleasant odor and flavor, similar to butyric acid. May consist of one or a mixture of isomers of n-pentanoic acid and/or 2- or 3-methyl-butanoic acid.

    Chemische Eigenschaften

    Colorless liquid; penetrating odor and taste. Soluble in water, alcohol and ether. Undergoes reactions typical of normal monobasic organic acids. Combustible.

    Occurrence

    The acid is not too common in nature; reported (as the corresponding ester) found in the essential oil of Boronia anemonifolia, in pineapple fruits and in other plants; also identified as acid or the corresponding ester in the essential oil of lemon petitgrain. Also reported found in apple, apple juice, banana, orange juice, bilberry, cranberry, strawberry, raspberry, papaya, grapes, celery, onion, baked potato, tomato, corn mint oil, breads, cheeses, milk, yogurt, butter, cheddar cheese, lean and fatty fish, fish oil, cooked meats, hop oil, beer, rum, whiskies, grape wines, cocoa, tea, roasted filberts, peanuts and pecans, honey, soybeans, coconut meat and milk, cloudberry, passion fruit, starfruit, trassi, mango, jackfruit, licorice, calamus, sake, buckwheat, watercress, laurel, peated malt, wort, kiwifruit, loquat, Bourbon vanilla, shrimps, oyster, scallop, cape gooseberry, sea buckthorn, Chinese quince and maté.

    Verwenden

    Valeric acid, is used as a sex attractant of the sugar beet wireworm, Limonius californicus. It is used predominantly as an intermediate in the manufacture of flavors and perfumes, ester type lubricants, plasticizers and vinyl stabilizesrs. It is a food additive used as a synthetic flavoring substance dan adjuvant. It is an inert ingredient in controlling pest.

    Verwenden

    valeric acid is obtained from valerian extract, which is considered skin conditioning.

    Verwenden

    Sex attractant of the sugar beet wireworm, Limonius californicus.1

    Definition

    ChEBI: A straight-chain saturated fatty acid containing five carbon atoms.

    synthetische

    By oxidation of n-amyl alcohol or, together with other isomers, by distillation of valerian roots; also by reacting butyl bromide and sodium cyanide with subsequent saponification of the formed butyl nitrile.

    Aroma threshold values

    Detection: 940 ppb to 3 ppm

    Taste threshold values

    Taste characteristics at 100 ppm: acidic, dairy-like with milky and cheese nuances.

    Synthesis Reference(s)

    Synthetic Communications, 26, p. 165, 1996 DOI: 10.1080/00397919608003877
    Tetrahedron Letters, 31, p. 1257, 1990 DOI: 10.1016/S0040-4039(00)88779-1
    Tetrahedron, 40, p. 3635, 1984 DOI: 10.1016/S0040-4020(01)88794-9

    Allgemeine Beschreibung

    A colorless liquid with a penetrating unpleasant odor. Density 0.94 g / cm3. Freezing point -93.2°F (-34°C). Boiling point 365.7°F (185.4°C). Flash point 192°F (88.9°F). Corrosive to metals and tissue.

    Air & Water Reaktionen

    Water soluble.

    Reaktivit?t anzeigen

    Valeric acid is a carboxylic acid. Exothermically neutralizes bases, both organic and inorganic, producing water and a salt. Can react with active metals to form gaseous hydrogen and a metal salt. Reacts with cyanide salts to generate gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by reaction with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Reacts with sulfites, nitrites, thiosulfates and dithionites to generate flammable and/or toxic gases and heat. Reacts with carbonates and bicarbonates to generate a harmless gas (carbon dioxide) but still heat. Can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. May initiate polymerization reactions. May catalyze (increase the rate of) chemical reactions.

    Health Hazard

    Corrosive. Very destructive to tissues of the mucous membranes, upper respiratory tract, eyes, and skin. Symptoms may include burning sensation, coughing, wheezing, laryngitis, shortness of breath, nausea and vomiting. Extremely destructive to skin. May be absorbed through the skin.

    Brandgefahr

    Special Hazards of Combustion Products: Irritating vapors and toxic gases, such as carbon dioxide and carbon monoxide, may be formed when involved in fire.

    Sicherheitsprofil

    Moderately toxic by ingestion, intravenous, and subcutaneous routes. Mildly toxic by inhalation. A corrosive irritant to skin, eyes, and mucous membranes. Combustible liquid. When heated to decomposition it emits acrid smoke and irritating fumes. Used in perfumes.

    l?uterung methode

    Water is removed from the acid by distillation using a Vigreux column (p 11), until the boiling point reaches 183o. A few crystals of KMnO4 are added, and after refluxing, the distillation is continued. [Andrews & Keefer J Am Chem Soc 83 3708 1961, Beilstein 2 H 299, 2 I 130, 2 II 263, 2 III 663, 2 IV 868.]

    Valeriansure Upstream-Materialien And Downstream Produkte

    Upstream-Materialien

    Downstream Produkte


    Valeriansure Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

    Global( 312)Lieferanten
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    Henan DaKen Chemical CO.,LTD.
    +86-371-66670886
    info@dakenchem.com China 15421 58
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    +86-0551-65418679
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    +86-0371-55982848
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    18482058008 18080483897
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    109-52-4(Valeriansure)Verwandte Suche:


    • N-PENTANOIC ACID
    • N-VALERIC ACID
    • PROPYLACETIC ACID
    • PENTANOIC-2,2-D2 ACID
    • PENTANOIC ACID
    • PENTANE ACID
    • RARECHEM AL BO 0179
    • VALERIC ACID
    • VALERIANIC ACID
    • 1-pentanoic acid
    • acidevalerique
    • Baldriansαure
    • Butanecarboxylic acid
    • butanecarboxylicacid
    • Kyselina valerova
    • kyselinavalerova
    • NA 1760
    • n-C4H9COOH
    • n-Valeriansαure
    • pentanoicacid(non-specificname)
    • Pentansαure
    • Valeriansαure
    • valeric
    • Valeric acid, n-
    • Valeric acid, normal
    • valericacid(non-specificname)
    • FEMA 3101
    • CARBOXYLIC ACID C5
    • 1-BUTANECARBOXYLIC ACID
    • Valeric acid, Propylacetic acid, Valerianic acid
    • VALERIC ACOD (N-PENTANOIC ACID)
    • Valeric acid natural
    • VALERIC ACID FCC
    • VALERIC ACID, STANDARD FOR GC
    • VALERALDEHYDE 97+% FCC
    • VALERIC ACID, 99+%
    • N-VALERIC ACID SIGMAULTRA
    • N-VALERIC ACID 99.5%
    • VALERICACID,REAGENT
    • N-VALERATE
    • VALERIANSAEURE-N
    • N-VALERICACID(PENTANOICACID)
    • VALERIC ACID WITH GC
    • n-Valeric acid Pentanoic acid 1-Butanecarboxylic acid
    • Pentanoic acid for synthesis
    • Sodium Valproate Impurity A
    • Valproic Acid Impurity 1(Valproic Acid EP Impurity A)
    • Butyphthalide impurity 33
    • Valeric Acid(Pentanoic acid)
    • Sodium Valoproate EP Impurity A
    • Sodium Valproate EP Impurity A
    • Valproic Acid EP Impurity A
    • Butylphthalide Impurity 33
    • Valeric Acld
    • Valeric acid,n-Valeric acid, Pentanoic acid
    • n-Valeric acid (n-Pentanoic acid)
    • Pentanoic Acid (Valeric Acid)
    • PENTANOIC ACID FOR SYNTHESIS 100 ML
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