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Natural Isovaleric Acid CAS 503-74

Natural Isovaleric Acid CAS 503-74

Odowell is a professional China Natural Isovaleric Acid CAS 503-74 manufacturers and China Natural Isovaleric Acid suppliers. Natural Isovaleric Acid is obtained by oxidation of isoamyl alcohol or isovaleraldehyde. Add potassium permanganate, sodium carbonate and isoamyl alcohol into water, stir and heat up to 50-70 ℃, react for 3h, filter, and wash manganese mud with hot water. Combine the filtrate, wash and concentrate. Cool to 40 ℃, slowly add sulfuric acid to pH=2-3, leave the Chemicalbook still, separate the oil layer, fractionate, and collect the 173-176 ℃ fraction to obtain isovaleric acid with a yield of 48%. Isovaleraldehyde is oxidized by air at 30-40 ℃ with manganese acetate as catalyst. The product is distilled and the distillate at 173-178 ℃ is collected to obtain a finished product with a purity of more than 95%..Odowell is ploughing in Flavors & Fragrances industry since 2012, constantly looking for new raw materials and new technology to fulfill perfumers and flavorists’ growing pursuit of product variety and quality.


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Product Description

Natural Isovaleric Acid CAS 503-74

Natural Isovaleric Acid CAS 503-74 is also called 3-methylbutyric acid. Natural products are found in essential oils such as valerian oil, vanilla oil, hops oil, bay leaf oil and spearmint oil, as well as lemon leaves and tobacco Chemicalbook. There is an unpleasant rancid smell, and the odor of sweat. Colorless viscous liquid. Soluble in water (1/24), ethanol, ether, chloroform.Natural Isovaleric Acid with high quality in stock and free Sample for testing.

Natural Isovaleric Acid (Specification)

Product Name

Natural Isovaleric Acid


3-METHYLBUTANOIC ACID;3-METHYLBUTYRIC ACID;AKOS BBS-00003796;RARECHEM AL BO 0154;3-Methylbuttersαure;3-methylbutyrate;3-methyl-butyricaci;3-Methyl-n-butyricacid









Mol File


Natural Isovaleric Acid CAS 503-74 Feature And Application

Natural Isovaleric Acid is colorless transparent liquid with unpleasant smell. Soluble in water. It is miscible with ethanol and ether.GB 2760-1996 stipulates that it is allowed to use edible spices. Natural Isovaleric Acid is mainly used to prepare cheese and cream essence, and also used for fruit essence in a small amount.

Natural Isovaleric Acid Details

Chemical Properties

melting point

-29 °C (lit.)

boiling point

175-177 °C (lit.)


0.925 g/mL at 20 °C (lit.)



refractive index

n20/D 1.403(lit.)


159 °F



CAS DataBase Reference

503-74-2(CAS DataBase Reference)

NIST Chemistry Reference

Butanoic acid, 3-methyl-(503-74-2)

EPA Substance Registry System

Isovaleric acid (503-74-2)

Safety Information

Risk Statements


Safety Statements


UN No.

UN 3265 8/PG 2

WGK Germany




Hazard class


Package grade


HS Code

2915 60 90

Quality Certificates

Our company meet the highest quality requirements as stipulated in ISO9001.

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