2,6-Di-tert-butyl-p-kresol

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Warnung

• Gefahrenhinweise

  H410：Sehr giftig für Wasserorganismen mit langfristiger Wirkung.

• Sicherheit

  P273：Freisetzung in die Umwelt vermeiden.

  P391：Verschüttete Mengen aufnehmen.

  P501：Inhalt/Behälter ... (Entsorgungsvorschriften vom Hersteller anzugeben) zuführen.

Butylated Hydroxytoluene Chemische Eigenschaften,Einsatz,Produktion Methoden

• ERSCHEINUNGSBILD

  FARBLOSE BIS BLASSGELBE KRISTALLE ODER PULVER.

• CHEMISCHE GEFAHREN

  Zersetzung beim Verbrennen und bei Kontakt mit oxidierenden Substanzen.

• ARBEITSPLATZGRENZWERTE

  TLV: (Einatembare Fraktion und Dampf) 2 mg/m?(als TWA); Krebskategorie A4 (nicht klassifizierbar als krebserzeugend für den Menschen); (ACGIH 2005).
  MAK: 20 mg/m?(Einatembare Fraktion) Spitzenbegrenzung: überschreitungsfaktor II(2); Krebserzeugend Kategorie 4; Schwangerschaft: Gruppe C; (DFG 2008).
  

• AUFNAHMEWEGE

  Aufnahme in den Körper durch Inhalation des Aerosols und durch Verschlucken.

• INHALATIONSGEFAHREN

  Beim Verdampfen bei 20°C tritt eine gesundheitsschädliche Kontamination der Luft nicht oder nur sehr langsam ein

• WIRKUNGEN BEI KURZZEITEXPOSITION

  WIRKUNGEN BEI KURZZEITEXPOSITION:
  Die Substanz reizt die Augen und die Haut.

• WIRKUNGEN NACH WIEDERHOLTER ODER LANGZEITEXPOSITION

  Wiederholter oder andauernder Hautkontakt kann Dermatitis hervorrufen. Möglich sind Auswirkungen auf die Leber.

• LECKAGE

  Verschüttetes Material in Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste sorgfältig sammeln. An sicheren Ort bringen. NICHT in die Umwelt gelangen lassen. Persönliche Schutzausrüstung: Atemschutzgerät, P2-Filter für schädliche Partikel.

• R-Sätze Betriebsanweisung:

  R22:Gesundheitsschädlich beim Verschlucken.
  R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
  R36/38:Reizt die Augen und die Haut.

• S-Sätze Betriebsanweisung:

  S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
  S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
  S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.

• Beschreibung

  The antioxidant butylated hydroxytoluene is contained in food, adhesive glues, industrial oils and greases, including cutting fluids. Sensitization seems very rare.

• Beschreibung

  Butylated Hydroxytoluene is a synthetic antioxidant. It scavenges peroxide, 2,2-diphenyl-1-picrylhydrazyl (DPPH; ), superoxide, and ABTS radicals in cell-free assays, as well as inhibits lipid peroxidation of linoleic acid (Item Nos. 90150 | 90150.1 | 21909) in vitro when used at a concentration of 45 μg/ml. Butylated Hydroxytoluene (0.025-3.2 mM) reduces freeze-thaw-induced malondialdehyde (MDA) production and increases sperm viability in boar spermatozoa preparations. Formulations containing BHT have been used as antioxidant cosmetic and food additives.

• Chemische Eigenschaften

  Butylated Hydroxytoluene is a white to pale yellow crystalline solid or powder.

• Chemische Eigenschaften

  Butylated hydroxytoluene occurs as a white or pale yellow crystalline solid or powder with a faint characteristic phenolic odor.

• Chemische Eigenschaften

  white crystalline solid

• Chemische Eigenschaften

  BHA and BHT (butylated hydroxytoluene) are monohydric phenolic antioxidants that, prior to their introduction and acceptance in the food industry, were used to protect petroleum against oxidative degumming. Butylated Hydroxytoluene has a very faint, musty, occasional cresylictype odor. BHA and Butylated Hydroxytoluene are extensively used in foods as antioxidants. Most fats, oils and fat-containing foods are naturally susceptible to rapid rancification and other oxidative reactions that produce compounds having objectionable taste and odor, making foods containing them unpalatable. Lipid oxidation is autocatalytic and proceeds as a complex of chain reactions, the nature and speed of which vary with the substrate, temperature, light, availability of oxygen and presence or absence of oxidation catalysts. Antioxidants like BHT act as “chain breaks” in the autooxidation processes under the usual conditions of processing, storage and use of fat-containing foods (Burdock, 1997).

• Occurrence

  Not reported found naturally.

• Verwenden

  Because they prevent rancidity, antioxidants are of great interest to the food industry. For example, butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA), and EDTA are frequently used to preserve various foods, such as cheese or fried products. Butylated hydroxytoluene is a powerful inhibitor of lipid peroxidation, yet large doses of it can induce oxidative DNA damage and cancer development in the rat forestomach.

• Verwenden

  Antioxidant 264 as general antioxidants is used widely in polymer materials, petroleum products and food processing industries. Antioxidant 264 is commonly used rubber antioxidant, heat, oxygen aging have some protective effect, but also can inhibit copper harm. This product does not change color, not pollution. Antioxidants 264 high solubility in oil, no precipitation, less volatile, non-toxic and non-corrosive.

• Verwenden

  Butylated Hydroxytoluene (BHT) is an antioxidant that functions similarly to butylated hydroxyanisole (BHA) but is less stable at high temperatures. It is also termed 2,6-di-tert-butyl-para-cresol. See Butylated Hydroxyanisole.

• Verwenden

  Butylated Hydroxytoluene is also known as butylated hydroxy toluene. It is an anti-oxidant that also has preservative and masking capabilities.

• Verwenden

  Antioxidant for food, animal feed, petroleum products, synthetic rubbers, plastics, animal and vegetable oils, soaps. Antiskinning agent in paints and inks.

• Definition

  ChEBI: A member of the class of phenols that is 4-methylphenol substituted by tert-butyl groups at positions 2 and 6.

• synthetische

  Butylated Hydroxytoluene is produced commercially by the alkylation of para-cresol with isobutylene. Butylated Hydroxytoluene is also produced by several western European manufacturers, production/processing plants in Germany, France, the Netherlands, United Kingdom and Spain.

• Vorbereitung Methode

  Prepared by the reaction of p-cresol with isobutene.

• Allgemeine Beschreibung

  White crystalline solid.

• Air & Water Reaktionen

  Insoluble in water.

• Reaktivität anzeigen

  Phenols, such as 2,6-Di-tert-butyl-4-methylphenol, do not behave as organic alcohols, as one might guess from the presence of a hydroxyl (-OH) group in their structure. Instead, they react as weak organic acids. Phenols and cresols are much weaker as acids than common carboxylic acids (phenol has Ka = 1.3 x 10^[-10]). These materials are incompatible with strong reducing substances such as hydrides, nitrides, alkali metals, and sulfides. Flammable gas (H2) is often generated, and the heat of the reaction may ignite the gas. Heat is also generated by the acid-base reaction between phenols and bases. Such heating may initiate polymerization of the organic compound. Phenols are sulfonated very readily (for example, by concentrated sulfuric acid at room temperature). The reactions generate heat. Phenols are also nitrated very rapidly, even by dilute nitric acid. Nitrated phenols often explode when heated. Many of them form metal salts that tend toward detonation by rather mild shock. May react with oxidizing materials.

• Health Hazard

  2,6-Di-tert-butyl-p-cresol or Butylated Hydroxytoluene is of relatively low acute toxicity in animals, and there is no evidence of either acute or chronic effects among exposed workers.

• Brandgefahr

  2,6-Di-tert-butyl-4-methylphenol is combustible.

• Flammability and Explosibility

  Non flammable

• Pharmazeutische Anwendungen

  Butylated hydroxytoluene is used as an antioxidant in cosmetics, foods, and pharmaceuticals. It is mainly used to delay or prevent the oxidative rancidity of fats and oils and to prevent loss of activity of oil-soluble vitamins.
  Butylated hydroxytoluene is also used at 0.5–1.0% w/w concentration in natural or synthetic rubber to provide enhanced color stability.
  Butylated hydroxytoluene has some antiviral activity and has been used therapeutically to treat herpes simplex labialis.

• Kontakt-Allergie

  This antioxidant is contained in food, adhesive glues, industrial oils, and greases, including cutting fluids. Sensitization seems very rare.

• Biochem/physiol Actions

  Butylated hydroxytoluene is a phenolic antioxidant. It has been shown to inhibit lipid peroxidation. It causes lung injury and promotes tumors in mice, but this may be due to a metabolite of Butylated Hydroxytoluene, 6-tert-butyl-2-[2′-(2′-hydroxymethyl)-propyl]-4-methylphenol. Metabolites of Butylated Hydroxytoluene have also been reported to induce DNA strand breaks and internucleosomal DNA fragmentation (a characteristic of apoptosis) in cultured cells. In rats, a single intraperitoneal injection of Butylated Hydroxytoluene (60 mg/kg body mass) results in a significant increase in nuclear DNA methyl transferase activity in the liver, kidneys, heart, spleen, brain and lungs. Incubation of alveolar macrophages with Butylated Hydroxytoluene significantly reduced the level of TNF-α which may explain the mechanism by which this antioxidant reduces inflammation. Preincubation of aspirin-treated platelets with Butylated Hydroxytoluene inhibits the secretion, aggregation, and protein phosphorylation induced by protein kinase C activators. Butylated Hydroxytoluene was also found to inhibit the initiation of hepatocarcinogenesis by aflatoxin B1.

• Erste Hilfe

  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.

• Carcinogenicity

  The IARC has determined that there is limited evidence for the carcinogenicity of Butylated Hydroxytoluene in experimental animals.Butylated Hydroxytoluene has given primarily negative results in a large number of in vivo and in vitro genotoxic assays.No significant reproductive effects were observed in three-generation toxicity studies in mice administered up to 0.4% in the diet.6 The 2003 ACGIH threshold limit valuetime- weighted average (TLV-TWA) for 2,6-ditert- butyl-p-cresol is 2mg/m3.

• Environmental Fate

  The metabolites of Butylated Hydroxytoluene can bind to cellular macromolecules, such as proteins and DNA, and cause toxicity.

• mögliche Exposition

  DBPC is used as a food and feed additive, flavor, and packaging material; as an antioxidant in human foods and animal feeds. It is also used as an antioxidant to sta- bilize petroleum fuels, rubber and vinyl plastics.

• Sicherheitsprofil

  Poison by intraperitoneal andintravenous routes. Moderately toxic by ingestion. Anexperimental teratogen. Other experimental reproductiveeffects. A human skin irritant. A skin and eye irritant.Questionable carcinogen with experimental carcinogenicand.

• Sicherheit(Safety)

  Butylated hydroxytoluene is readily absorbed from the gastrointestinal tract and is metabolized and excreted in the urine mainly as glucuronide conjugates of oxidation products. Although there have been some isolated reports of adverse skin reactions, butylated hydroxytoluene is generally regarded as nonirritant and nonsensitizing at the levels employed as an antioxidant.
  The WHO has set a temporary estimated acceptable daily intake for butylated hydroxytoluene at up to 125 μg/kg body-weight.
  Ingestion of 4 g of butylated hydroxytoluene, although causing severe nausea and vomiting, has been reported to be nonfatal.
  LD₅₀ (guinea pig, oral): 10.7 g/kg
  LD₅₀ (mouse, IP): 0.14 g/kg
  LD₅₀ (mouse, IV): 0.18 g/kg
  LD₅₀ (mouse, oral): 0.65 g/kg
  LD₅₀ (rat, oral): 0.89 g/kg

• Lager

  Exposure to light, moisture, and heat causes discoloration and a loss of activity. Butylated hydroxytoluene should be stored in a wellclosed container, protected from light, in a cool, dry place.

• Versand/Shipping

  UN2811 Toxic solids, organic, n.o.s., Hazard Class: 6.1; Labels: 6.1-Poisonous materials, Technical Name Required.

• läuterung methode

  Dissolve Butylated Hydroxytoluene in n-hexane at room temperature, then cool with rapid stirring, to -60o. The precipitate is separated, redissolved in hexane, and the process is repeated until the mother liquor is no longer coloured. The final product is stored under N2 at 0o [Blanchard J Am Chem Soc 82 2014 1960]. It has also been recrystallised from EtOH, MeOH, *benzene, n-hexane, methylcyclohexane or pet ether (b 60-80o), and is dried in a vacuum. [Beilstein 6 IV 3511.]

• Toxicity evaluation

  Butylated Hydroxytoluene is a white crystalline solid. It is insoluble in water and alkalies; but soluble in most common organic solvents such as alcohol and ether. Its melting point is 70°C, boiling point is 265°C, flash point is 127°C, and specific gravity is 1.048 at 20°C.

• Inkompatibilitäten

  Butylated hydroxytoluene is phenolic and undergoes reactions characteristic of phenols. It is incompatible with strong oxidizing agents such as peroxides and permanganates. Contact with oxidizing agents may cause spontaneous combustion. Iron salts cause discoloration with loss of activity. Heating with catalytic amounts of acids causes rapid decomposition with the release of the flammable gas isobutene.

• Inkompatibilitäten

  Contact with oxidizers may cause fire and explosion hazard.

• Regulatory Status

  GRAS listed. Accepted as a food additive in Europe. Included in the FDA Inactive Ingredients Database (IM and IV injections, nasal sprays, oral capsules and tablets, rectal, topical, and vaginal preparations). Included in nonparenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.

Butylated Hydroxytoluene Upstream-Materialien And Downstream Produkte

2,6-Di-tert-butyl-p-kresol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global(1277)Suppliers

128-37-0, Butylated Hydroxytoluene Verwandte Suche: