Methyl Butyrate

Methyl butyrate is a colorless, transparent liquid characterized by a remarkably distinct and intense sweet, fruity aroma (reminiscent of pineapple, apple, and rum); it possesses one of the strongest aromatic intensities among low-molecular-weight fatty acid esters. It is miscible with ethanol, diethyl ether, acetone, ethyl acetate, and hydrocarbons, and is capable of dissolving nitrocellulose and certain resins. It is stable to light but should be protected from strong acids, strong bases, and heat.

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Product Introduction

Zouping Jinxing Chemical Co., Ltd. is one of the leading manufacturers and suppliers of methyl butyrate in China. If you're going to wholesale bulk methyl butyrate made in China, welcome to get free sample from our factory. All customized products are with high quality and low price.

Basic physical properties

CAS: 623-42-7 (Methyl n-butyrate)
Boiling point: 102.3–103.5 °C (atmospheric pressure)
Melting point: -85.8 °C
Density: 0.898 g/cm³ (20 °C)
Refractive index: n²⁰ᴅ ≈ 1.387
Solubility: Solubility in water is approx. 1.5 g/100 mL (20 °C); miscible with ethanol, diethyl ether, acetone, ethyl acetate, and hydrocarbons; dissolves nitrocellulose and certain resins
Flash point: 14 °C (closed cup); flammable liquid (GHS Category 2/3)
Vapor pressure: Approx. 3.8 kPa at 20 °C; The evaporation rate of methyl butyrate is similar to that of ethyl propionate and slightly slower than that of ethyl acetate.
Explosive limits: Approx. 1.5%–8.0% v/v

Primary Uses

Flavoring agent (food/personal care): FEMA 2719, GRAS; key ingredient for pineapple, apple, apricot, and rum flavor profiles; usage levels in soft drinks, confectionery, and baked goods are in the mg/kg range.
Solvent: For fast-to-medium drying coatings, inks, and adhesives (odor is "more pleasant" than ethyl acetate, though the scent lingers slightly longer).
Organic synthesis intermediate: For the production of butyric acid-based pharmaceuticals or pesticide side chains.
Chromatographic standard.

Safety and Physiology

Toxicity: Low toxicity. Oral LD₅₀ (rat) ≈ 3.5 g/kg; high-concentration vapors cause dizziness and mucous membrane irritation; liquid causes moderate eye irritation; minimal percutaneous absorption.
GHS: H225 Highly flammable; H319 Causes serious eye irritation; H332 Harmful if inhaled.
Storage and Transport: UN 1237 (similar entry), Class 3, PG II; store in a cool, explosion-proof area (≤30°C); keep separate from oxidizing agents and strong bases.

FAQ

Q: How safe is it? What should be kept in mind during operation?

A: Classified as a liquid of low toxicity and high flammability.

Toxicity: LD₅₀ (oral, rat) approximately 3–5 g/kg; irritating to the eyes and respiratory tract; high vapor concentrations may cause headache and nausea.

Protection: Handle in a fume hood or well-ventilated area; wear safety goggles and chemical-resistant gloves; strictly prohibit open flames and keep away from heat sources.

Q: What are the requirements for storage and transportation?

A: Storage: Store in a sealed container in a cool, dark place; refrigeration at 2–8°C is recommended. As the substance is volatile, ensure the cap is tightly closed and the inner seal is in place.

Transport: Regulated as a flammable liquid (Class 3) and requires a flammable label; while not highly toxic or corrosive, avoid exposure to high temperatures or direct sunlight.

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Propyl Butyrate

Propyl Propionate