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Produktnavn: |
2-metylsmørsyre |
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CAS: |
116-53-0 |
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MF: |
C5H10O2 |
|
MW: |
102.13 |
|
EINECS: |
204-145-2 |
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Mol-fil: |
116-53-0.mol |
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|
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Melting point |
-70 °C |
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Kokepunkt |
176-177 °C(lit.) |
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tetthet |
0.936 g/mL at 25 °C(lit.) |
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vapor pressure |
0.5 mm Hg ( 20 °C) |
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FEMA |
2695 | 2-METYLBUTYRESYRE |
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brytningsindeks |
n20 / D 1.405 (lys) |
|
Fp |
165 °F |
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lagringstemperatur |
0-6 ° C |
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solubility |
20g / l |
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pka |
4,8 (ved 25â „ƒ) |
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skjema |
Væske |
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farge |
Clear colorless to pale yellow |
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explosive limit |
1.6-7.3%(V) |
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Water Solubility |
45 g/L (20 ºC) |
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JECFA-nummer |
255 |
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BRN |
1720486 |
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CAS DataBase Referanse |
116-53-0(CAS DataBase Reference) |
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NIST Chemistry Reference |
Butanoic acid, 2-methyl-(116-53-0) |
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EPA Substance Registry System |
2-metylsmørsyre (116-53-0) |
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Hazard Codes |
C |
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Risikoverklæringer |
21 / 22-34 |
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Sikkerhetserklæringer |
26-36 / 37 / 39-45 |
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RIDADR |
UN 3265 8 / PG 3 |
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WGK Tyskland |
1 |
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RTECS |
EK7897000 |
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F |
13 |
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TSCA |
Yes |
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HazardClass |
8 |
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PackingGroup |
III |
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HS kode |
29156090 |
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Description |
2-Methylbutyric acid has a pungent, acrid odor similar to Roquefort cheese with an acrid taste. At low dilutions, it has a pleasant fruity taste. May be prepared by decarboxylation of methyl ethyl malonic acid (with heat); also by oxidation of fermentation amyl alcohol (fusel oil). |
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Kjemiske egenskaper |
2-metylsmørsyre har en skarp, skarp lukt som ligner på Roquefort-ost med en skarp smak. Etter fortynning har den en behagelig, fruktig smak |
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Kjemiske egenskaper |
clear colorless to pale yellowish liquid |
|
Uses |
Brukes i syntesen av 2-metylsmørsyreanhydrid |
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Definisjon |
ChEBI: Ametylsmørsyre omfattende en smørsyrekjerne som bærer en 2-metylsubstituent. Produsert fra aminosyre leucin under næringssult i bakterier. |
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Aroma threshold values |
Detection: 10 to 60 ppb. Aroma characteristics at 1.0%: acidic sour, pungent, ripe fruit leather, lingon[1]berry, dirty cheesy, fermented pineapple fruity with a woody nuance |
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Taste threshold values |
Taste characteristics at 10 ppm: dirty, acidic sour, ripe fruity, with a dairy buttery and cheesy nuance |
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Råvarer |
FUSEL OIL-->methylethylmalonic acid |
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Forberedelsesprodukter |
3-metylbutyramidin-HCl -> Metylsmørsyre -> 2-metylbutyl-2-metylbutyrat -> FEMA 3632 -> FEMA 3393 -> HEXYL ISOVALERAT STANDARD FOR GC |
