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Product Name: |
2-Methyl-2-pentenoic acid |
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Synonyms: |
2-Methyl-2-pentenoic acid,99%;Strawberriff Acid;Natural 2-methyl-2-pentenoic acid;2-hexenoate;2-METHYL-2-PENTENOIC ACID;STRAWBERRIFF;RARECHEM AL BE 0127;2-methyl-2-pentenoicaci |
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CAS: |
3142-72-1 |
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MF: |
C6H10O2 |
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MW: |
114.14 |
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EINECS: |
221-552-0 |
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Product Categories: |
Acids and Esters |
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Mol File: |
3142-72-1.mol |
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Melting point |
26-28 °C(lit.) |
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Boiling point |
123-125 °C30 mm Hg(lit.) |
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density |
0.979 g/mL at 25 °C |
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vapor density |
>1 (vs air) |
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refractive index |
n20/D 1.46(lit.) |
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FEMA |
3195 | 2-METHYL-2-PENTENOIC ACID |
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Fp |
226 °F |
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pka |
5.00±0.19(Predicted) |
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JECFA Number |
1210 |
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InChIKey |
JJYWRQLLQAKNAD-SNAWJCMRSA-N |
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CAS DataBase Reference |
3142-72-1(CAS DataBase Reference) |
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NIST Chemistry Reference |
2-Pentenoic acid, 2-methyl-(3142-72-1) |
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EPA Substance Registry System |
2-Pentenoic acid, 2-methyl- (3142-72-1) |
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Hazard Codes |
C |
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Risk Statements |
34-22-41 |
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Safety Statements |
26-36/37/39-45 |
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RIDADR |
UN 3261 8/PG 3 |
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WGK Germany |
2 |
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TSCA |
Yes |
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HazardClass |
8 |
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PackingGroup |
III |
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HS Code |
29161900 |
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Description |
May be prepared by distillation of 2-hydroxy-2-methylvaleric acid (m-form). |
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Chemical Properties |
2-Methyl-2-pentenoic acid has a fruity odor. |
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Chemical Properties |
white semi-transparent crystalline |
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Chemical Properties |
With a dry acid
note, 2-Methyl-2-pentenoic Acid is found in the odor of strawberries.The acid
can be prepared from the corresponding saturated one by α-bromination
followed by dehydrobromination. |
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Occurrence |
Reported found in strawberry |
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Preparation |
By distillation of 2-hydroxy-2-methylvaleric acid (cis-form). |
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Taste threshold values |
Taste characteristics at 50 ppm: sour, acidic, sweaty, berry and fruit-like. |
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Raw materials |
Propionaldehyde-->Silver nitrate |
