Product Name: |
N-butyric acid |
CAS: |
107-92-6 |
MF: |
C4H8O2 |
MW: |
88.11 |
EINECS: |
203-532-3 |
Mol File: |
107-92-6.mol |
|
Melting point |
−6-−3 ° C (lys.) |
Boiling point |
162 °C(lit.) |
tetthet |
0,964 g / ml ved 25 ° C (opplyst) |
damptetthet |
3.04 (mot luft) |
vapor pressure |
0.43 mm Hg ( 20 °C) |
brytningsindeks |
n20 / D 1.398 (lys) |
FEMA |
2221 | BUTYRIC ACID |
Fp |
170 ° F |
lagringstemperatur |
-20°C |
pka |
4.83(at 25℃) |
skjema |
Liquid |
color |
Clear colorless |
Spesifikk tyngdekraft |
0,960 (20/4â „ƒ) |
PH |
2,5 (100 g / l, H2O, 20â „ƒ) |
Odor Threshold |
0,00019ppm |
explosive limit |
2-12.3%(V) |
Water Solubility |
BLANDBARE |
JECFA Number |
87 |
Merck |
14,1593 |
BRN |
906770 |
Stability: |
Stabilitet Brannfarlig. Uforenlig med sterke oksidasjonsmidler, aluminium og de fleste andre vanlige metaller, alkalier, reduksjonsmidler. |
InChIKey |
FERIUCNNQQJTOY-UHFFFAOYSA-N |
CAS DataBase Referanse |
107-92-6(CAS DataBase Reference) |
NIST Chemistry Reference |
Butanoic acid(107-92-6) |
EPA Substance Registry System |
Smørsyre (107-92-6) |
Hazard Codes |
C, Xi |
Risk Statements |
34 |
Safety Statements |
26-36-45 |
RIDADR |
UN 2820 8 / PG 3 |
WGK Germany |
1 |
RTECS |
ES5425000 |
F |
13 |
Autoignition Temperature |
824 °F |
Fare Merknad |
Irriterende |
TSCA |
Ja |
HS kode |
2915 60 19 |
HazardClass |
8 |
PackingGroup |
III |
Data om farlige stoffer |
107-92-6 (data om farlige stoffer) |
Toksisitet |
LD50 oralt hos rotter: 8,79 g / kg (Smyth) |
Beskrivelse |
Smørsyre er akarboksylsyre også klassifisert som fettsyre. Den eksisterer i to isomere former som vist tidligere, men denne oppføringen fokuserer på n-smørsyre eller butansyre. Det er en fargeløs, tyktflytende, harsk-luktende væske som er til stede som estere i animalsk fett og planteoljer. Smørsyre eksisterer som aglyserid i smør, med en konsentrasjon på ca. 4%; meieriprodukter og eggprodukter er en primær kilde til smørsyre. Når smør eller andre matvarer gorancid frigjøres fri smørsyre ved hydrolyse, og produserer rancidsmell. Det forekommer også i animalsk fett og planteoljer. |
Kjemiske egenskaper |
Butyric acid is a combustible, oily liquid with an unpleasant odor. The Odor Threshold is 0.0001 ppm. |
Kjemiske egenskaper |
Butyric acid, C3H7COOH, a colorless liquid with an obnoxious odor, occurring in spoiled butter.It miscible with water, alcohol, and ether.It is used in the synthesis of butyrate ester perfume and flavor ingredients and in disinfectants and pharmaceuticals, |
Kjemiske egenskaper |
n-Butyric acid has a persistent, penetrating, rancid, butter-like odor and burning, acid taste. |
Bruker |
Butyric Acid is a fatty acid that is commonly obtained from butter fat. it has an objectionable odor which limits its uses as a food acid- ulant or antimycotic. it is an important chemical reactant in the manufacture of synthetic flavoring, shortening, and other edible food additives. in butter fat, the liberation of butyric acid which occurs during hydrolytic rancidity makes the butter fat unusable. it is used in soy milk-type drinks and candies. |
Bruker |
It is used in plastics as a raw material for the cellulose acetate butyrate (CAB). Other uses of butyric acid are in disinfectants, pharmaceuticals, and feed supplements for plant and animals. Butyric acid derivatives play an important role in plant and animal physiology. |
Bruker |
Butyric acid is used
in the preparation of various butyrate esters. Low-molecular-weight esters of
butyric acid, such as methyl butyrate, have mostly pleasant aromas or tastes.
As a consequence, they find use as food and perfume additives. It is also
used as an animal feed supplement, due to the ability to reduce pathogenic
bacterial colonization. It is an approved food flavoring in the EU FLAVIS
database (number 08.005). |
Production Methods |
Smørsyre fremstilles industrielt ved gjæring av sukker eller stivelse, tilveiebrakt ved tilsetning av forråtnet ost, med kalsiumkarbonat tilsatt toneutralisering av syrene som dannes i prosessen. Butyrisk gjæring av stivelse blir hjulpet av direkte tilsetning av Bacillus subtilis. Salter og estere av syren kalles butyrater eller butanoater. |
Preparation |
Obtained by fermentation of starches and molasses with selective enzymes (Granulo saccharobutyricum); it is subsequently isolated as the calcium salt. |
Definisjon |
CHEBI: Astraight-chain mettet fettsyre som er butan der en av de terminale metylgruppene har blitt oksidert til en karboksygruppe. |
Production Methods |
Smørsyre produseres ved oksidasjon av butyraldehyd (CH3 (CH2) 2CHO) eller butanol (C4H9OH). Det kan også dannes biologisk ved oksidasjon av sukker og stivelse ved bruk av bakterier. |
Definisjon |
En fargeløs flytende karboksylsyre. Estere av butansyre er tilstede i smør. |
Aroma threshold values |
Detection: 240 ppb to 4.8 ppm |
Taste threshold values |
Taste characteristics at 250 ppm: acidic, sour, cheesy, dairy, creamy with a fruity nuance. |
General Description |
A colorless liquid with a penetrating and unpleasant odor. Flash point 170°F. Corrosive to metals and tissue. Density 8.0 lb /gal. |
Air & Water Reactions |
Water soluble. |
Reaktivitetsprofil |
(3R,4S)-1-Benzoyl-3-(1-methoxy-1-methylethoxy)-4-phenyl-2-azetidinone can react with oxidizing agents. Incandescent reactions occur with chromium trioxide above 212°F. Also incompatible with bases and reducing agents. May attack aluminum and other light metals . |
Fare |
Strong irritant to skin and tissue. |
Health Hazard |
Inhalation causes irritation of mucous membrane and respiratory tract; may cause nausea and vomiting. Ingestion causes irritation of mouth and stomach. Contact with eyes may cause serious injury. Contact with skin may cause burns; chemical is readily absorbed through the skin and may cause damage by this route. |
Fire Hazard |
Combustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form. |
Safety Profile |
Moderately toxic by ingestion, skin contact, subcutaneous, intraperitoneal, and intravenous routes. Human mutation data reported. Severe skin and eye irritant. A corrosive material. Combustible liquid. Could react with oxidizing materials. Incandescent reaction with chromium trioxide above 100'. To fight fire, use alcohol foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and irritating fumes. |
Shipping |
UN2820 Butyric acid, Hazard class: 8; Labels: 8—Corrosive material. UN2529 Isobutyric acid, Hazard Class: 3; Labels: 3—Flammable liquid, 8—Corrosive material |
Rensingsmetoder |
Distil the acid, them mix it with KMnO4 (20g/L), and fractionally redistil, discarding the first third of the distillate [Vogel J Chem Soc 1814 1948]. [Beilstein 2 IV 779.] |
Avfallshåndtering |
Oppløs eller bland materialet med et brennbart løsningsmiddel og brenn det i en kjemisk forbrenningsovn utstyrt med etterbrenner og skrubber. Alle føderale, statlige og lokale miljøbestemmelser må overholdes. |
Preparation Products |
Eddiksyre -> Isosmørsyre -> Fenvalerat -> Butyrylklorid -> (2S, 3S) -2-amino-3-metylpentansyre -> Smørsyreanhydrid -> Etylbutyrat -> Direkte blå 71- -> ALFA-KETOBUTYRESYRE NATRIUM SALT -> Reaktiv Rød Brun K-B3r -> Butyramid -> Progabid -> 1,4-Bis (4-cyanostyryl) benzen -> 4-Heptanon -> dinatrium 3 - [[4 '- [(6-amino-1-hydroksy-3-sulfonato-2-naftyl) azo] -3,3'-dimetoksy [1,1'-bifenyl] -4-yl] azo] -4 -hydroksynaftalen-1-sulfonat -> Vat Orange 9 -> Reaktiv Orange 1 -> Isoamylbutyrat -> 1-OKTEN-3-YL BUTYRAT -> CIS-3-HEXENYLBUTYRAT -> Sykloheksylbutyrat - > 2-Etyl-1,3-cyklopentandion -> Benzyldimetylkarbinylbutyrat -> Fenetylbutyrat -> FEMA 2686 -> ALLYLBUTYRAT -> 2-bromsmørsyre -> Lær Svart -> PANTOTENISYRE KALSIUM SALTMONOHYDRAT- -> FEMA 2368 -> FEMA 3332 |
Råvarer |
Salpetersyre -> tert-Butanol -> Oksygen -> Vanillin -> 1-Pentanol -> Butyraldehyd -> Melasse -> Koboltacetat -> Mangantriacetatdihydrat -> SMØR |