What is Sec-Butyl Acetate?

Sec-butyl acetate is the acetate ester of 2-butanol, with CAS 105-46-4 and molecular formula C₆H₁₂O₂. It is a fast-evaporating oxygenated solvent, distinct from n-butyl acetate and isobutyl acetate.

What is Sec-Butyl Acetate used for?

It is used in coatings, inks, adhesives and industrial cleaners as an active solvent for nitrocellulose, acrylic and other resins. It can also be used as a replacement or blend component for MIBK or n-butyl acetate.

What specifications should be checked before ordering?

Confirm assay, water, acidity, color, distillation range and alcohol content. The specification summary should state the actual solvent purity and test method for the intended coating or cleaning application.

How should Sec-Butyl Acetate be stored and handled?

Store in tightly closed containers in a cool, dry, ventilated area, away from heat, sparks and strong oxidizers. Use proper ventilation and PPE, and follow the safety information for spill, disposal and first-aid procedures.

How does Sec-Butyl Acetate differ from n-butyl and isobutyl acetate?

Sec-butyl acetate is the ester of 2-butanol and has a branched sec-butyl group, while n-butyl acetate and isobutyl acetate have different alkyl structures. This changes evaporation rate, solvency, odor and formulation compatibility, so the CAS and product identity should be checked for solvent replacement work.

Sec-Butyl Acetate CAS 105-46-4

Sec-Butyl Acetate (2-butyl acetate), CAS 105-46-4, is a fast-evaporating ester solvent used in nitrocellulose lacquers, acrylic and polyurethane coatings, printing inks, adhesives and industrial cleaners. Confirm the required grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 105-46-4
Synonyms: 2-Butyl acetate, 1-Methylpropyl acetate, Acetic acid sec-butyl ester, s-Butyl acetate
Einecs: 203-300-1
Molecular Formula: C₆H₁₂O₂
Grade: Industrial grade 99%
Package: 200kg iron drum or 50kg plastic drum packing

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Product Description

Sec-Butyl Acetate, CAS 105-46-4, is 2-butyl acetate, the acetate ester of 2-butanol; the EC/EINECS number is 203-300-1.

Synonyms: 2-Butyl acetate; 1-Methylpropyl acetate; Acetic acid sec-butyl ester; s-Butyl acetate.

CAS: 105-46-4.

Molecular formula: C₆H₁₂O₂.

Molecular weight: 116.16.

EC number: 203-300-1.

It is a colorless liquid with a fruity odor; the melting point is about -99 °C, the boiling point about 111-112 °C and the density about 0.872 g/cm³. It is slightly soluble in water and miscible with ethanol, ether and most organic solvents.

It is flammable, with a flash point of about 17-22 °C (closed cup) and flammable vapor limits of about 1.7-9.8 vol% in air.

It is produced by esterification of 2-butanol with acetic acid.

It is used as an active solvent for nitrocellulose lacquers and acrylic or polyurethane coatings.

It is used in printing inks, adhesives and industrial cleaners.

It can replace or blend with n-butyl acetate and MIBK where a faster evaporation rate and strong solvency are required.

It differs from n-butyl acetate, isobutyl acetate and tert-butyl acetate in alkyl structure, evaporation rate and odor; confirm the CAS before solvent substitution.

Confirm assay, water, acidity, color, distillation range and residual alcohol content for the intended coating or cleaning application.

Store in tightly closed containers in a cool, dry, ventilated area away from heat, sparks and strong oxidizers; use ventilation, grounding and suitable PPE.

Confirm the current product-specific specification.

Confirm packaging with the requested quantity and destination requirements.

Document requirements should be confirmed from the current specification, SDS, COA, or other product-specific files.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended use, required specification, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Sec-Butyl Acetate?

A: Sec-butyl acetate is the acetate ester of 2-butanol, with CAS 105-46-4 and molecular formula C₆H₁₂O₂. It is a fast-evaporating oxygenated solvent, distinct from n-butyl acetate and isobutyl acetate.
Q:
What is Sec-Butyl Acetate used for?

A: It is used in coatings, inks, adhesives and industrial cleaners as an active solvent for nitrocellulose, acrylic and other resins. It can also be used as a replacement or blend component for MIBK or n-butyl acetate.
Q:
What specifications should be checked before ordering?

A: Confirm assay, water, acidity, color, distillation range and alcohol content. The specification summary should state the actual solvent purity and test method for the intended coating or cleaning application.
Q:
How should Sec-Butyl Acetate be stored and handled?

A: Store in tightly closed containers in a cool, dry, ventilated area, away from heat, sparks and strong oxidizers. Use proper ventilation and PPE, and follow the safety information for spill, disposal and first-aid procedures.
Q:
How does Sec-Butyl Acetate differ from n-butyl and isobutyl acetate?

A: Sec-butyl acetate is the ester of 2-butanol and has a branched sec-butyl group, while n-butyl acetate and isobutyl acetate have different alkyl structures. This changes evaporation rate, solvency, odor and formulation compatibility, so the CAS and product identity should be checked for solvent replacement work.

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