Buttersureanhydrid

Bezeichnung:Buttersureanhydrid

CAS-Nr106-31-0

Englisch Name:Butyric anhydride

CBNumberCB1693281

SummenformelC8H14O3

Molgewicht158.2

MOL-Datei106-31-0.mol

Synonyma

Buttersureanhydrid

Buttersureanhydrid physikalisch-chemischer Eigenschaften

Schmelzpunkt	-75--66 °C (lit.)
Siedepunkt	198-199 °C (lit.)
Dichte	0.967 g/mL at 25 °C (lit.)
Dampfdichte	5.45 (vs air)
Dampfdruck	10 mm Hg ( 79.5 °C)
Brechungsindex	n20/D 1.413(lit.)
Flammpunkt	190 °F
storage temp.	Store below +30°C.
Löslichkeit	alcohol: soluble (with decomposition)(lit.)
Aggregatzustand	Liquid
Farbe	Clear colorless to light yellow
Geruch (Odor)	butter
Explosionsgrenze	1.1%, 104°F
Wasserlöslichkeit	Decomposes
Sensitive	Moisture Sensitive
Merck	14,1594
BRN	1099474
Dielectric constant	12.0（Ambient）
InChIKey	YHASWHZGWUONAO-UHFFFAOYSA-N
LogP	1.390
CAS Datenbank	106-31-0(CAS DataBase Reference)
NIST chemische Informationen	Butanoic acid, anhydride(106-31-0)
EPA chemische Informationen	Butyric anhydride (106-31-0)

Sicherheit

Kennzeichnung gefährlicher	C
R-Sätze:	14-34
S-Sätze:	26-36/37/39-45
RIDADR	UN 2739 8/PG 3
WGK Germany	1
RTECS-Nr.	ET7090000
F	13
Selbstentzündungstemperatur	535 °F
TSCA	Yes
HazardClass	8
PackingGroup	III
HS Code	29159000
Giftige Stoffe Daten	106-31-0(Hazardous Substances Data)
Toxizität	LD50 orally in Rabbit: 8790 mg/kg LD50 dermal Rabbit 6400 mg/kg

Gefahreninformationscode (GHS)

Butyric anhydride Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R14:Reagiert heftig mit Wasser.
R34:Verursacht Verätzungen.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
Beschreibung
Butyric anhydride, or Butanoic anhydride, is a chemical compound with the formula (CH₃CH₂CH₂CO)₂O.It is a colorless liquid that smells strongly of butyric acid, formed by its reaction with the moisture in the air.
Chemische Eigenschaften
clear liquid
Verwenden
Butyric anhydride is used in the preparation of amidoamine dendron-based co-adsorbents, which finds application in dye- sensitized solar cells improvement. It is also used in the synthesis of butyrate ester, which is used as a perfume and flavor. Further, it acts as a fumigant to drive bees from their hives. In addition to this, it is used in food additives, textile auxiliaries, varnishes, perfumes, pharmaceuticals and disinfectants.
Verwenden
Butyric anhydride can be used to prepare various flavor & fragrance compounds like neryl butyrate, geranyl butyrate, and butyl butyrllactate.
Verwenden
Manufacture of butyrates, drugs, and tanning agents.
synthetische
To a cooled flask containing 88 gm (1.0 mole) of η-butyric acid at 10°C is added dropwise 28.0 gm (0.5 mole) of methoxyacetylene over a 1-hr period. After stirring the reaction mixture for 16 hr at 20°C the contents are distilled to afford the following three fractions: (1) b.p. 56°C, η& 1.3628, 23 gm (62%), methyl acetate; (2) b.p. 72-73°C (18 mm Hg), n% 1.3990, 10.0 gm (11%), butyric acid; (3) b.p. 91-92°C (18mmHg), 1.4118, 48.0 gm (61%), butyric anhydride.
Application
Because of its odor, butyric anhydride has use as a fumigant to drive bees from their hives in products such as Bee - Go.
Allgemeine Beschreibung
Water-white liquid with an odor of rancid butter. Flash point 190°F. Density 8.0 lb / gal. Corrosive to metals and tissue. Low toxicity.
Air & Water Reaktionen
Slowly reacts with water to form butyric acid.
Reaktivität anzeigen
Butyric anhydride reacts exothermically with water. The reaction is usually slow, but might become violent if local heating accelerates their rate. Acids accelerate the reaction with water. Incompatible with acids, strong oxidizing agents, alcohols, amines, and bases.
Health Hazard
TOXIC; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death. Contact with molten substance may cause severe burns to skin and eyes. Reaction with water or moist air will release toxic, corrosive or flammable gases. Reaction with water may generate much heat that will increase the concentration of fumes in the air. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
Brandgefahr
Combustible material: may burn but does not ignite readily. Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.
Sicherheitsprofil
Mildly toxic by ingestion. A corrosive liquid. When heated to decomposition it emits acrid smoke and irritating vapors.
Sicherheit(Safety)
Butyric anhydride is a combustible, corrosive liquid. It is considered water sensitive.
läuterung methode
Dry the anhydride by shaking it with P2O5, then distilling it. [Beilstein 2 IV 802.]

Butyric anhydride Upstream-Materialien And Downstream Produkte

Buttersureanhydrid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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