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Product Name: |
3-methyl butyric acid |
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Synonyms: |
isopropyl-aceticaci;Isopropylessigsαure;isovalerianic;Isovalerianic acid;isovalerianicacid;Isovaleriansαure;Kyselina isovalerova;kyselinaisovalerova |
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CAS: |
503-74-2 |
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MF: |
C5H10O2 |
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MW: |
102.13 |
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EINECS: |
207-975-3 |
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Product Categories: |
Panax ginseng;Phytochemicals by Plant (Food/Spice/Herb);Pharmaceutical Raw Materials;Artemisia vulgaris;Building Blocks;s wort);C1 to C5;Carbonyl Compounds;Carboxylic Acids;Carthamus tinctorius (Safflower oil);Chemical Synthesis;Humulus lupulus (Hops);Hypericum perforatum (St John′;Nutrition Research;Organic Building Blocks |
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Mol File: |
503-74-2.mol |
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Melting point |
-35 °C |
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Boiling point |
176 °C |
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density |
0.926 |
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vapor pressure |
0.38 mm Hg ( 20 °C) |
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FEMA |
3102 | ISOVALERIC ACID |
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refractive index |
n20/D 1.403(lit.) |
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Fp |
159 °F |
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storage temp. |
Store below +30°C. |
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solubility |
48g/l |
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pka |
4.77(at 25℃) |
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form |
Liquid |
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color |
Clear colorless to slightly yellow |
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Specific Gravity |
0.928 (20/20℃) |
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PH |
3.1 (10g/l, H2O, 25℃) |
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explosive limit |
1.5-6.8%(V) |
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Water Solubility |
25 g/L (20 ºC) |
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JECFA Number |
259 |
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Merck |
14,5231 |
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BRN |
1098522 |
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CAS DataBase Reference |
503-74-2(CAS DataBase Reference) |
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NIST Chemistry Reference |
Butanoic acid, 3-methyl-(503-74-2) |
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EPA Substance Registry System |
Isovaleric acid (503-74-2) |
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Hazard Codes |
C,T |
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Risk Statements |
34-24-22 |
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Safety Statements |
26-36/37/39-45-38-28A |
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RIDADR |
UN 3265 8/PG 2 |
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WGK Germany |
1 |
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RTECS |
NY1400000 |
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F |
13 |
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Autoignition Temperature |
824 °F |
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TSCA |
Yes |
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HS Code |
2915 60 90 |
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HazardClass |
6.1 |
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PackingGroup |
III |
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Hazardous Substances Data |
503-74-2(Hazardous Substances Data) |
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Toxicity |
LD50 i.v. in mice: 1120±30 mg/kg (Or, Wretlind) |
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Description |
Isovaleric acid has a characteristic disagreeable odor. It is extremely penetrating and persistent with a sour taste. May be synthesized by oxidation of isoamyl alcohol or isovaleric aldehyde. |
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Chemical Properties |
Isovaleric acid has a characteristic disagreeable, rancid, cheese-like odor. It is extremely penetrating and persistent with a sour taste. May consist of one or a mixture of isomers or n-pentanoic acid and/or 2- or 3-methyl butanoic acid. Consumption: Annual: 1850.00 lb |
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Chemical Properties |
clear colorless to slightly yellow liquid |
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Uses |
Isovaleric acid is used extensively as a flavoring ingredient in nonalcoholic beverages and in foods such as ice cream, candy, baked goods, and cheese, as a fragrance ingredient in perfumes, and as a chemical intermediate in the manufacture of sedatives and other pharmaceutical products. It is also used as an extractant of mercaptans from petroleum hydrocarbons, a vinyl stabilizer, and as an intermediate in the manufacture of plasticizers and synthetic lubricants. |
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Uses |
In flavors, perfumes, manufacture of sedatives. |
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Definition |
ChEBI: A C5, branched-chain saturated fatty acid. |
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Preparation |
By oxidation of isoamyl alcohol or isovaleric aldehyde |
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Aroma threshold values |
Detection: 190 ppb to 2.8 ppm |
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General Description |
Isovaleric acid is a colorless liquid with a penetrating odor. Isovaleric acid is slightly soluble in water. Isovaleric acid is corrosive to metals and to tissue. |
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Air & Water Reactions |
Isovaleric acid is slightly soluble in water. |
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Hazard |
Strong irritant to tissue. |
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Health Hazard |
TOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. |
