Butyl butanoate

C8H16O2

butyl butanoate

CAS109-21-7
GHS02 Gefahrensymbol: Entzündbar – Flamme
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Identification

CAS Number
109-21-7
EC Number
203-656-8
UN Number
3272
Index Number
607-031-00-4
PubChem CID
7983

Physical-chemical properties

Molecular Formula
C8H16O2
Molar Mass
144.21 g/mol
IUPAC Name
butyl butanoate

Chemical Identifiers

InChI
InChI=1S/C8H16O2/c1-3-5-7-10-8(9)6-4-2/h3-7H2,1-2H3
InChI Key
XUPYJHCZDLZNFP-UHFFFAOYSA-N

Overview

Butyl butanoate (CAS 109-21-7) is an organic ester compound with fruity aromatic properties and flammable liquid characteristics. This clear, colorless liquid ester is formed through the esterification reaction between butanoic acid and butanol, resulting in a compound with the molecular formula C8H16O2 and a molecular weight of 144.21 g/mol. The substance is characterized by its distinctive sweet, fruity odor reminiscent of pineapple or apple, making it valuable in various industrial applications where pleasant aromatic properties are desired. From a safety perspective, butyl butanoate is classified as a Class 3 flammable liquid under GHS regulations, requiring appropriate handling precautions including proper ventilation, elimination of ignition sources, and use of suitable personal protective equipment. The substance carries a Warning signal word and displays the GHS02 flame pictogram, indicating its flammable nature. Under ADR transport regulations, it falls under Class 3 for dangerous goods transportation. The compound finds primary applications in the fragrance and flavor industry, where its fruity characteristics make it suitable for food flavoring formulations and cosmetic products. It also serves as a solvent in certain industrial processes and as an intermediate in organic synthesis reactions. Like other ester compounds such as 2-methylpropyl propanoate, which shares similar structural characteristics and aromatic properties, butyl butanoate offers good compatibility with various organic systems. Additional industrial uses include its role in paint and coating formulations, where it functions as a coalescent or plasticizer, and in the production of specialty chemicals where its ester functionality provides valuable reactivity. OYSI maintains reliable supply chains for butyl butanoate, ensuring consistent availability for European industrial customers requiring this versatile ester compound.

Safety & Classification

Warning
Classification:

Flam. Liq. 3

HHazard Statements (H-Statements)

Describe the nature and severity of the hazard

H226

Flammable liquid and vapour.

Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).

First Aid Measures

Transport (ADR)

UN Number3272
ADR Class3
Packing GroupIII
Tunnel CodeD/E
Proper Shipping NameButylbutanoat
Marine PollutantNo

Frequently Asked Questions

What is butyl butanoate?

Butyl butanoate is an organic chemical compound with the molecular formula C8H16O2 and CAS number 109-21-7. This ester has a molecular weight of 144.21 g/mol and is formed by the reaction between butanoic acid and butanol. It belongs to the family of carboxylic acid esters and is classified as a flammable liquid under GHS regulations. The substance exhibits typical ester properties and is commonly used in various industrial applications requiring its specific chemical characteristics.

What are the physicochemical properties of butyl butanoate?

Butyl butanoate is a colorless to pale yellow liquid at room temperature with a characteristic fruity, pineapple-like odor. The compound has limited solubility in water due to its organic nature but is miscible with most organic solvents including alcohols and ethers. It has a relatively low vapor pressure and moderate volatility. The substance demonstrates typical ester behavior in chemical reactions and maintains stability under normal storage conditions when kept away from strong oxidizing agents and heat sources.

What is butyl butanoate used for?

Butyl butanoate is primarily used as a flavoring agent in the food industry due to its pleasant fruity aroma reminiscent of pineapple and apple. It serves as an important ingredient in perfumery and cosmetics for fragrance formulations. The compound is also utilized as a solvent in various industrial processes, particularly in coatings, paints, and lacquer formulations. Additionally, it functions as an intermediate in organic synthesis and is employed in the production of other chemical compounds requiring ester functionality.

How to handle butyl butanoate safely?

Butyl butanoate requires careful handling due to its flammable liquid classification (Flam. Liq. 3). Essential personal protective equipment includes safety goggles, chemical-resistant gloves, and protective clothing to prevent skin and eye contact. Work should be conducted in well-ventilated areas or under fume extraction to avoid inhalation of vapors. Keep away from ignition sources, heat, and open flames. Use appropriate grounding and bonding procedures when transferring the material to prevent static electricity buildup, which could cause ignition.

How to store butyl butanoate correctly?

Butyl butanoate should be stored in tightly closed containers in a cool, dry, well-ventilated area away from heat sources and ignition points. Storage temperatures should remain below 25°C to maintain product stability and minimize vapor formation. Keep containers away from strong oxidizing agents, acids, and bases which could cause unwanted reactions. Use appropriate fire-resistant storage cabinets for flammable liquids when storing larger quantities. Ensure proper labeling and maintain inventory records according to local regulations for hazardous materials.

What to do in case of contact with butyl butanoate?

In case of skin contact with butyl butanoate, immediately remove contaminated clothing and wash the affected area thoroughly with soap and plenty of water for at least 15 minutes. For eye contact, flush immediately with clean water for at least 15 minutes while holding eyelids open. If inhaled, move the person to fresh air and keep them at rest. If swallowed, do not induce vomiting and seek immediate medical attention. Contact emergency services if severe symptoms develop or persist after initial treatment.

How to dispose of butyl butanoate properly?

Butyl butanoate must be disposed of as hazardous waste according to local and national environmental regulations. The substance cannot be discharged into sewers, water bodies, or soil due to potential environmental impact. Contact licensed waste disposal companies specializing in flammable liquid waste treatment. Small quantities may be recovered through distillation or incineration at authorized facilities with appropriate emission controls. Always consult local environmental authorities for specific disposal requirements and maintain proper documentation of waste disposal activities.

How to transport butyl butanoate?

Butyl butanoate is classified under ADR as Class 3 (flammable liquids), Packing Group III for transportation purposes. Packages must bear appropriate hazard labels including the GHS02 flame pictogram and 'Warning' signal word. Use UN-approved packaging suitable for Packing Group III liquids and ensure proper documentation including transport documents and emergency response information. Vehicles must comply with ADR requirements for Class 3 substances, including appropriate equipment and driver training. Avoid transport during extreme weather conditions that could affect package integrity.

Is butyl butanoate subject to specific regulations?

Butyl butanoate is subject to standard chemical regulations including REACH registration requirements for substances manufactured or imported in quantities above one tonne per year in the EU. The substance is classified under CLP regulation as Flam. Liq. 3 requiring appropriate labeling with GHS02 pictogram and 'Warning' signal word. It is not currently listed as a Substance of Very High Concern (SVHC). Specific restrictions may apply depending on intended use, particularly in food contact applications where food safety regulations must be observed.

Where to buy butyl butanoate in Europe?

Butyl butanoate is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across the continent. OYSI provides high-quality butyl butanoate with proper documentation including safety data sheets and certificates of analysis. The company ensures compliance with European chemical regulations and offers reliable supply chain management for both small and large quantity requirements. Contact OYSI directly for specific availability, technical specifications, and delivery options tailored to your industrial application needs.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.