Benzaldehyd Produkt Beschreibung

Benzaldehyde Struktur
100-52-7
  • CAS-Nr.100-52-7
  • Bezeichnung:Benzaldehyd
  • Englisch Name:Benzaldehyde
  • Synonyma:Benzaldehyd;Bittermandel?l;Benzoylaldehyd;Benzocarbonal
    BALD;NA 1989;FEMA 2127;NCI-C56133;Benaldehyde;Benzaldehyd;BENZALDEHYDE;Benzyaldehyde;Benzoylhydride;BenzaldehydeGr
  • CBNumber:CB6852588
  • Summenformel:C7H6O
  • Molgewicht:106.12
  • MOL-Datei:100-52-7.mol
Benzaldehyd physikalisch-chemischer Eigenschaften
  • Schmelzpunkt: :-26 °C
  • Siedepunkt: :179 °C
  • Dichte :1.044 g/cm 3 at 20 °C(lit.)
  • Dampfdichte :3.7 (vs air)
  • Dampfdruck :4 mm Hg ( 45 °C)
  • Brechungsindex :n20/D 1.545(lit.)
  • FEMA  :2127 | BENZALDEHYDE
  • Flammpunkt: :145 °F
  • storage temp.  :room temp
  • Löslichkeit :H2O: soluble100mg/mL
  • pka :14.90(at 25℃)
  • Aggregatzustand :neat
  • Farbe :Pale yellow
  • Geruch (Odor) :Like almonds.
  • PH :5.9 (1g/l, H2O)
  • Säure-Base-Indikators(pH-Indikatoren) :5.9
  • Explosionsgrenze :1.4-8.5%(V)
  • Wasserlöslichkeit :<0.01 g/100 mL at 19.5 ºC
  • FreezingPoint  :-56℃
  • Sensitive  :Air Sensitive
  • Merck  :14,1058
  • JECFA Number :22
  • BRN  :471223
  • Stabilität: :Stable. Combustible. Incompatible with strong oxidizing agents, strong acids, reducing agents, steam. Air, light and moisture-sensitive.
  • InChIKey :HUMNYLRZRPPJDN-UHFFFAOYSA-N
  • CAS Datenbank :100-52-7(CAS DataBase Reference)
  • NIST chemische Informationen :Benzaldehyde(100-52-7)
  • EPA chemische Informationen :Benzaldehyde (100-52-7)
Sicherheit
  • Kennzeichnung gefährlicher :Xn
  • R-Sätze: :22
  • S-Sätze: :24
  • RIDADR  :UN 1990 9/PG 3
  • WGK Germany  :1
  • RTECS-Nr. :CU4375000
  • F  :8
  • Selbstentzündungstemperatur :374 °F
  • TSCA  :Yes
  • HS Code  :2912 21 00
  • HazardClass  :9
  • PackingGroup  :III
  • Giftige Stoffe Daten :100-52-7(Hazardous Substances Data)
  • Toxizität :LD50 in rats, guinea pigs (mg/kg): 1300, 1000 orally (Jenner)

Benzaldehyde Chemische Eigenschaften,Einsatz,Produktion Methoden

  • ERSCHEINUNGSBILD FARBLOSE BIS GELBE FLüSSIGKEIT MIT CHARAKTERISTISCHEM GERUCH.
  • CHEMISCHE GEFAHREN Bildung explosionsfähiger Peroxide unter bestimmten Bedingungen. Reagiert heftig mit Aluminium, Basen, Eisen, Oxidationsmitteln und Phenol unter Feuer- und Explosionsgefahr.
  • ARBEITSPLATZGRENZWERTE TLV nicht festgelegt (ACGIH 2005).
    MAK: IIb (nicht festgelegt, aber Informationen vorhanden)
    (DFG 2006).
  • AUFNAHMEWEGE Aufnahme in den Körper durch Inhalation der Dämpfe, 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.
  • 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. NICHT in die Umwelt gelangen lassen.
  • R-Sätze Betriebsanweisung: R22:Gesundheitsschädlich beim Verschlucken.
  • S-Sätze Betriebsanweisung: S24:Berührung mit der Haut vermeiden.
  • Aussehen Eigenschaften C7H6O; Bittermandelöl. Farblose bis leicht gelbliche Flüssigkeit, die nach Bittermandeln riecht.
  • Gefahren für Mensch und Umwelt Gesundheitsschädlich beim Verschlucken.
    Reizt die Haut, Augen und Atemwege. Führt zu Narkose.
    Nicht stark erhitzen.
    Nicht mit Alkalien, Alkalimatallen, Aluminium, Eisen, Perameisensäure, Phenolen, Luft, Sauerstoff oder Oxidationsmitteln in Berührung bringen.
    LD50 (oral, Ratte): 1300 mg/kg
  • Schutzmaßnahmen und Verhaltensregeln Geeignete Schutzhandschuhe als kurzzeitiger Spritzschutz.
  • Verhalten im Gefahrfall Dämpfe nicht einatmen.
    Mit flüssigkeitsbindendem Material, z.B. Rench Rapid aufnehmen. Der Entsorgung zuführen. Nachreinigen.
    Pulver, Schaum.
    Brennbar. Mit Luft Bildung explosionsfähiger Gemische möglich. Im Brandfall können gefährlich Dämpfe entstehen.
  • Erste Hilfe Nach Hautkontakt: Mit reichlich Wasser abwaschen.
    Nach Augenkontakt: Mit reichlich Wasser bei geöffnetem Lidspalt mindestens 10 Minuten ausspülen. Augenarzt hinzuziehen.
    Nach Einatmen: Frischluft. Arzt hinzuziehen.
    Nach Verschlucken: Reichlich Wasser trinken. Erbrechen auslösen. Arzt hinzuziehen.
    Nach Kleidungskontakt: Kontaminierte Kleidung entfernen.
    Ersthelfer: siehe gesonderten Anschlag

  • Sachgerechte Entsorgung Als halogenfreie, organische Lösemittelabfälle.
  • Chemische Eigenschaften Benzaldehyde is a colorless to yellow, oily liquid with an odor of bitter almonds. Benzaldehyde is commercially available in two grades: (i) pure benzaldehyde and (ii) and double-distilled benzaldehyde. The latter has applications in the pharmaceutical, perfume, and fl avor industries. Benzaldehyde may contain trace amounts of chlorine, water, benzoic acid, benzyl chloride, benzyl alcohol, and/or nitrobenzene. Benzaldehyde is ignited relatively easily on contact with hot surfaces. This has been attributed to the property of very low auto-ignition temperature. Benzaldehyde also undergoes autoxidation in air and is liable to self-heat. Benzaldehyde exists in nature, occurring in combined and uncombined forms in many plants. Benzaldehyde is also the main constituent of the essential oils obtained by pressing the kernels of peaches, cherries, apricots, and other fruits. Benzaldehyde is released into the environment in emissions from combustion processes, such as gasoline and diesel engines, incinerators, and wood burning. It is formed in the atmosphere through photochemical oxidation of toluene and other aromatic hydrocarbons. Benzaldehyde is corrosive to gray and ductile cast iron (10% solution), and all concentrations of lead. However, pure benzaldehyde is not corrosive to cast iron. Benzaldehyde does not attack most of the common metals, like stainless steels, aluminum, aluminum bronze, nickel and nickel-base alloys, bronze, naval brass, tantalum, titanium, and zirconium. On decomposition, benzaldehyde releases peroxybenzoic acid and benzoic acidBenzaldehyde is used in perfumes, soaps, foods, drinks, and other products; as a solvent for oils, resins, some cellulose ethers, cellulose acetate, and cellulose nitrate. The uses of benzaldehyde in industries are extensive. For instance, in the production of derivatives that are employed in the perfume and fl avor industries, like cinnamaldehyde, cinnamyl alcohol, cinnamic acid, benzylacetone, and benzyl benzoate, in the production of triphenylmethane dyes and the acridine dye, benzofl avin; as an intermediate in the pharmaceutical industry, for instance, to make chloramphenicol, ephedrin, and ampicillin, as an intermediate to make benzoin, benzylamine, benzyl alcohol, mandelic acid, and 4-phenyl-3-buten-2-one (benzylideneacetone), in photochemistry, as a corrosion inhibitor and dyeing auxiliary, in the electroplating industry, and in the production of agricultural chemicals
  • Chemische Eigenschaften Benzaldehyde is themain, characteristic component of bitter almond oil. It occurs in many other essential oils and is a colorless liquid with a bitter almond odor. In the absence of inhibitors, benzaldehyde undergoes autoxidation to perbenzoic acid, which reacts with a second molecule of benzaldehyde to yield benzoic acid.
    Hydrogenation of benzaldehyde yields benzyl alcohol, and condensation with aliphatic aldehydes leads to additional fragrance substances or their unsaturated intermediates.Unsaturated araliphatic acids are obtained through the Perkin reaction, for example, the reaction with acetic anhydride to give cinnamic acid.
    Benzaldehyde is prepared by hydrolysis of benzal chloride, for example, in acidic media in the presence of a catalyst such as ferric chloride or in alkaline media with aqueous sodium carbonate. Part of the commercially available benzaldehyde originates from a technical process for phenol. In this process, benzaldehyde is a by-product in the oxidation, in air, of toluene to benzoic acid.
    Benzaldehyde is used in aroma compositions for its bitter almond odor. It is the starting material for a large number of araliphatic fragrance and flavor materials.
  • Occurrence Present as cyanuric glucoside (amygdalin) in bitter almond, peach, apricot kernel and other Prunus species; amygdalin is also present in various parts of the following plants: Sambucus nigra, Chrysophyllum arlen, Anacyclus officinarnm, Anacyclus pedunculatus, Davallia brasiliensis, Lacuma deliciosa, Lacuma multiflora and others; free benzaldehyde has been reported found in several essential oils: hyacinth, citronella, orris, cinnamon, sassafras, labdanum and patchouli. Reported found in strawberry jam, leek (raw) (Allium porrum L.), crispbread, Camembert, Gruyere de Comte, provolone cheeses, black tea, salted and pickled plum, cooked trassi, Bantu beer, red sage (Texas sage) (S. coccinea Juss. Ex Murr.), arrack, scallop, hog plum (Spondias mombins L.), chekur (Alpinia sessilis Kon. = Kaemferia galanga) and other natural sources.
  • Verwenden Benzaldehyde is used as an intermediatein the production of flavoring chemicals,such as cinnamaldehyde, cinnamalalcohol,and amyl- and hexylcinnamaldehyde for perfume,soap, and food flavor; synthetic penicillin,ampicillin, and ephedrine; and as araw material for the herbicide Avenge. Itoccurs in nature in the seeds of almonds,apricots, cherries, and peaches. It occurs intrace amounts in corn oil.
  • Verwenden Manufacture of dyes, perfumery, cinnamic and mandelic acids, as solvent; in flavors.
  • Verwenden Benzaldehyde is a flavoring agent which is liquid and colorless, and has an almond-like odor. it has a hot (burning) taste. it is oxidized to benzoic acid when exposed to air and deteriorates under light. it is miscible in volatile oils, fixed oils, ether, and alcohol; it is spar- ingly soluble in water. it is obtained by chemical synthesis and by natural occurrence in oils of bitter almond, peach, and apricot kernel. it is also termed benzoic aldehyde.
  • Definition A yellow organic oil with a distinct almondlike odor. Benzenecarbaldehyde undergoes the reactions characteristic of aldehydes and may be synthesized in the laboratory by the usual methods of aldehyde synthesis. It is used as a food flavoring and in the manufacture of dyes and antibiotics, and can be readily manufactured by the chlorination of methylbenzene and the subsequent hydrolysis of (dichloromethyl) benzene: C6H5CH3 + Cl2 →C6H5CHCl2 C6H5CHCl2 + 2H2O →C6H5CH(OH)2+ 2HCl C6H5CH(OH)2 →C6H5CHO + H2O.
  • Aroma threshold values Detection: 100 ppb to 4.6 ppm; Recognition: 330 ppb to 4.1 ppm.
  • Taste threshold values Taste characteristics at 50 ppm: sweet, oily, almond, cherry, nutty and woody
  • Allgemeine Beschreibung A clear colorless to yellow liquid with a bitter almond odor. Flash point near 145°F. More denser than water and insoluble in water. Hence sinks in water. Vapors are heavier than air. The primary hazard is to the environment. Immediate steps should be taken to limit spread to the environment. Easily penetrates the soil to contaminate groundwater and nearby waterways. Used in flavoring and perfume making.
  • Air & Water Reaktionen Oxidizes in air to form benzoic acid, which is moderately toxic by ingestion. Insoluble in water.
  • Reaktivität anzeigen A nontoxic, combustible liquid, reacts with oxidizing reagents. Benzaldehyde must be blanketed with an inert gas at all times since Benzaldehyde is oxidized readily by air to benzoic acid [Kirk-Othmer, 3rd ed., Vol. 3, 1978, p. 736]. In contact with strong acids or bases Benzaldehyde will undergo an exothermic condensation reaction [Sax, 9th ed., 1996, p. 327]. A violent reaction was observed on contact with peroxyacids (peroxyformic acid) [DiAns, J. et al., Ber., 1915, 48, p. 1136]. An explosion occurred when pyrrolidine, Benzaldehyde, and propionic acid were heated to form porphyrins.
  • Hazard Highly toxic.
  • Health Hazard Benzaldehyde exhibited low to moderate toxicityin test animals, the poisoning effectdepending on dosage. Ingestion of 50–60 mLmay be fatal to humans. Oral intake of a largedose can cause tremor, gastrointestinal pain,and kidney damage. Animal experimentsindicated that ingestion of this compoundby guinea pigs caused tremor, bleeding fromsmall intestine, and an increase in urine volume;in rats, ingestion resulted in somnolenceand coma.
    LD50 value, oral (guinea pigs): 1000 mg/kg
    LD50 value, oral (rats): 1300 mg/kg
    A 500-mg amount for a 24-hour periodresulted in moderate skin irritation in rabbits.Because of its low toxicity, high boilingpoint, and low vapor pressure, the healthhazard to humans from exposure to benzaldehydeis very low.
  • 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.
  • Sicherheitsprofil Poison by ingestion and intraperitoneal routes. Moderately toxic by subcutaneous route. An allergen. Acts as a feeble local anesthetic. Local contact may cause contact dermatitis. Causes central nervous system depression in small doses and convulsions in larger doses. A skin irritant. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. Combustible liquid. To fight fire, use water (may be used as a blanket), alcohol, foam, dry chemical. A strong reducing agent. Reacts violently with peroxyformic acid and other oxidizers. See also ALDEHYDES.
  • Chemical Synthesis Natural benzaldehyde is obtained by extraction and subsequent fractional distillation from botanical sources; synthetically, from benzyl chloride and lime or by oxidation of toluene
  • mögliche Exposition In manufacture of perfumes, dyes, and cinnamic acid; as solvent; in flavors.
  • Lager Benzaldehyde should be kept stored in a tightly closed container and protected against physical damage. Storage of the chemical substance outside or in a detached area is preferred, whereas inside storage should be in a standard flammable liquids storage room or cabinet. Benzaldehyde should be kept separated from oxidizing materials. Also, storage and use areas should be no smoking areas. Containers of this material may be hazardous when empty since they retain product residues (vapors, liquid); observe all warnings and precautions listed for the product
  • Versand/Shipping UN1990 Benzaldehyde, Hazard class: 9; Labels: 9—Miscellaneous hazardous material.
  • läuterung methode To diminish its rate of oxidation, benzaldehyde usually contains additives such as hydroquinone or catechol. It can be purified via its bisulfite addition compound but usually distillation (under nitrogen at reduced pressure) is sufficient. Prior to distillation it is washed with NaOH or 10% Na2CO3 (until no more CO2 is evolved), then with saturated Na2SO3 and H2O, followed by drying with CaSO4, MgSO4 or CaCl2. [Beilstein 7 IV 505.]
  • Inkompatibilitäten The substance reacts with air, forming explosive peroxides. Reacts violently with performic acid, oxidants, aluminum, iron, bases, and phenol, causing fire and explosion hazard. May self-ignite if absorbed in combustible material with large surface area, or otherwise dispersed over large areas. Reacts with rust, amines, alkalies, strong bases, reducing agents such as hydrideds and active metals.
  • Waste disposal Incineration; add combustible solvent and spray into incinerator with afterburner.
  • Vorsichtsmaßnahmen Workers should be careful when using benzaldehyde because there is a risk of spontaneous combustion. It may ignite spontaneously if it is absorbed onto rags, cleaning cloths, clothing, sawdust, diatomaceous earth (kieselguhr), activated charcoal, or other materials with large surface areas in workplaces. Workers should avoid handling the chemical substance and should not cut, puncture, or weld on or near the container. Exposure of benzaldehyde to air, light, heat, hot surfaces such as hot pipes, sparks, open flames, and other ignition sources should be avoided. Workers should wear proper personal protective clothing and equipment
Benzaldehyde Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Benzaldehyd Anbieter Lieferant Produzent Hersteller Vertrieb Händler.
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100-52-7, Benzaldehyde Verwandte Suche:
  • Benzyl Alcohol EP Impurity A
  • BENZALDEHYDE, 99%BENZALDEHYDE, 99%BENZALDEHYDE, 99%BENZALDEHYDE, 99%
  • Artifical essential oil of almond
  • Artificial Almond Oil
  • Artificial bitter almond oil
  • artificialalmondoil
  • Benzaldehyde FFC
  • benzaldehydeffc
  • Benzene carbaldehyde
  • Benzene methylal
  • benzenecarbaldehyde
  • Benzenecarboxaldehyde
  • benzenemethylal
  • Benzoyl hydride
  • Benzoylhydride
  • Benzyaldehyde
  • Ethereal oil of bitter almonds
  • NA 1989
  • NCI-C56133
  • Phenylmethanal benzenecarboxaldehyde
  • 4-Formylpolystyrene
  • Benzaldehyde 99+ %
  • Natural benzaldehyde
  • BENZALDEHYDE TECH
  • Acetic anhydride natural
  • BENZALDEHYDE, FREE OF CHLORINE
  • BENZALDEHYDE, REDISTILLED, 99.5+%
  • BENZALDEHYDE 98+% NATURAL FCC
  • BENZALDEHYDE 98+% FCC
  • BENZALDEHYDE, STANDARD FOR GC
  • BENZALDEHYDE, REAGENTPLUS, >=99%
  • BENZALDEHYDE EXTRA PURE
  • BENZALDEHYDE, 99% NATURAL
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  • BENZALDEHYDE, 98% NATURAL
  • BENZALDEHYDE, 98+%
  • BenzaldehydeGr
  • Benaldehyde
  • BENZALDEHYDE CERTIFIED
  • Benzaldehyde (technical)
  • Benzene carbonal (technical)
  • Benzoic aldehyde (technical)
  • Benzaldehyde (natural)
  • Benzene carbonal (natural)
  • Benzoic aldehyde (natural)
  • Benzaldehyde (synthetic)
  • Benzene carbonal (synthetic)
  • Benzoic aldehyde (synthetic)
  • Oil of almond (synthetic)
  • Benzaldehyde, pure, 98+%
  • Benzaldehyde, redistilled, pure, 99.5+%
  • BENZALDEHYDE NF FCC KOSHER
  • BENZALDEHYDE,FCC
  • BENZALDEHYDE,NF
  • BENZALDEHYDE,REAGENT
  • BENZALDEHYDE FOR SYNTHESIS 25 L
  • BENZALDEHYDE FOR SYNTHESIS 1 L
  • BENZALDEHYDE FOR SYNTHESIS 100 ML