| Identification | More | [Name]
Butyric anhydride | [CAS]
106-31-0 | [Synonyms]
AKOS BBS-00004317
BUTANOIC ANHYDRIDE
BUTYRIC ANHYDRIDE
BUTYRYL OXIDE
N-BUTYRIC ANHYDRIDE
Anhydrid kyseliny maselne
anhydridkyselinymaselne
Butanoicacid,anhydride
Butanoicacidanhydride
Butyranhydrid
butyric
Butyric acid anhydride
butyricacidanhydride
butyricanhydriden
Butyrloxide
n-Butanoic anhydride
n-Butyric acid anhydride
n-butyricacidanhydride
BUTYRIC ANHYDRIDE 99%
N-BUTYRIC ANHYDRIDE 98% | [EINECS(EC#)]
203-383-4 | [Molecular Formula]
C8H14O3 | [MDL Number]
MFCD00009389 | [Molecular Weight]
158.19 | [MOL File]
106-31-0.mol |
| Chemical Properties | Back Directory | [Appearance]
clear liquid | [Melting point ]
-75--66 °C (lit.) | [Boiling point ]
198-199 °C (lit.) | [density ]
0.967 g/mL at 25 °C(lit.)
| [vapor density ]
5.45 (vs air)
| [vapor pressure ]
10 mm Hg ( 79.5 °C)
| [refractive index ]
n20/D 1.413(lit.)
| [Fp ]
190 °F
| [storage temp. ]
Store below +30°C. | [solubility ]
alcohol: soluble (with decomposition)(lit.) | [form ]
Liquid | [color ]
Clear colorless to light yellow | [Odor]
butter | [explosive limit]
1.1%, 104°F | [Water Solubility ]
Decomposes | [Sensitive ]
Moisture Sensitive | [Merck ]
14,1594 | [BRN ]
1099474 | [Dielectric constant]
12.0（Ambient） | [InChIKey]
YHASWHZGWUONAO-UHFFFAOYSA-N | [LogP]
1.390 | [Uses]
Manufacture of butyrates, drugs, and tanning
agents.
| [CAS DataBase Reference]
106-31-0(CAS DataBase Reference) | [NIST Chemistry Reference]
Butanoic acid, anhydride(106-31-0) | [EPA Substance Registry System]
106-31-0(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
C | [Risk Statements ]
R14:Reacts violently with water.
R34:Causes burns. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . | [RIDADR ]
UN 2739 8/PG 3
| [WGK Germany ]
1
| [RTECS ]
ET7090000
| [F ]
13 | [Autoignition Temperature]
535 °F | [TSCA ]
Yes | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
29159000 | [Safety Profile]
Mildly toxic by
ingestion. A corrosive liquid. When heated
to decomposition it emits acrid smoke and
irritating vapors. | [Hazardous Substances Data]
106-31-0(Hazardous Substances Data) | [Toxicity]
LD50 orally in Rabbit: 8790 mg/kg LD50 dermal Rabbit 6400 mg/kg |
| Questions And Answer(Q&A) | Back Directory | [preparation]
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.
|
| Hazard Information | Back Directory | [General Description]
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. | [Reactivity Profile]
BUTYRIC ANHYDRIDE(106-31-0) 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. | [Air & Water Reactions]
Slowly reacts with water to form butyric acid. | [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. | [Fire Hazard]
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. | [Description]
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. | [Chemical Properties]
clear liquid | [Application]
Because of its odor, butyric anhydride has use as a fumigant to drive bees from their hives in products such as Bee - Go. | [Safety]
Butyric anhydride is a combustible, corrosive liquid. It is considered water sensitive. | [Purification Methods]
Dry the anhydride by shaking it with P2O5, then distilling it. [Beilstein 2 IV 802.] |
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