Industrial Glue

AccordPOPULAR & WEIRDchemical · solvent · sharp

Seven perfumesOne of them is looking at you

TopPyramid
—Strength
—Tenacity
—Origins

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Specimen
Industrial Glue perfume ingredient
Top
Fantasy/Concept
Definition

Ethyl acetate is a solvent used in glues, and toluene is the solvent in certain types of glue. Ethyl acetate has a characteristic sweet smell, similar to pear drops.

FRUITY SWEET PUNGENT NAIL POLISH-LIKE
Type
Accord
Olfactive family
Aquatic
Subfamily
Fresh aquatics
Cluster
Fresh aquatic notes
Instruments
Pyramid
TTop
HHeart
BBase

Scent

Ethyl acetate has a nail polish-like, fruity odor. Toluene has a sweet smell and is partly responsible for the aroma of gasoline and paint fumes. The odor of toluene is also given as sweet, pungent and benzene-like. Acetone has a pungent, fruity, dry odor.

The Full Story

Rubber cement is an adhesive made from elastic polymers mixed in a solvent such as acetone, hexane, heptane or toluene. As the solvents quickly evaporate, the rubber solidifies, forming a strong yet flexible bond. The solvents used in rubber cement present some hazards, including flammability and potential for abuse as inhalants.

How solvent-based glues harden

Solvent-based adhesives are a mixture of ingredients, typically polymers, dissolved in a solvent. As the solvent evaporates, the adhesive hardens. White glue, contact adhesives and rubber cements are members of the drying adhesive family.

Solvents behind the smell

Ethyl acetate is a flammable, colorless liquid that is used in glues, nail polish removers, and the decaffeination process of tea and coffee. Toluene is a colorless, water-insoluble liquid that is predominantly used as an industrial feedstock and a solvent. Toluene is the solvent in some types of paint thinner, permanent markers, contact cement and certain types of glue. Acetone is a colorless, highly volatile and flammable liquid that serves as an important organic solvent in industry, home, and laboratory settings.

Adhesives that do not rely on solvents

Water-based adhesives typically do not contain volatile solvents. The cyanoacrylate group in the monomer rapidly polymerizes in the presence of water to form long, strong chains.

Making ethyl acetate

Ethyl acetate is manufactured on a large scale for use as a solvent. Ethyl acetate is produced in industry mainly via the classic Fischer esterification reaction of ethanol and acetic acid. In 2004, an estimated 1.3 million tonnes were produced worldwide. Ethyl acetate was first synthesized by the Count de Lauraguais in 1759 by distilling a mixture of ethanol and acetic acid.

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Related: Airy Note · Aluminum · Helional · Ozone Acetaldehyde · Plastic · River Notes · Steam Accord · Water

Did You Know?

Ethyl acetate is the most common ester in wine. In a killing jar charged with ethyl acetate, the vapors kill a collected insect quickly without destroying it. Rubber cement is used as the marking fluid in erasable pens.

Extraction & Chemistry

Extraction method

The Fischer mixture of ethanol and acetic acid converts to ethyl acetate in about 65% yield at room temperature. Acid catalysts speed the reaction, and removing water shifts the equilibrium toward the ester. Ethyl acetate is also prepared in industry by the Tishchenko reaction, which combines two equivalents of acetaldehyde in the presence of an alkoxide catalyst. A third route is the alkylation of acetic acid with ethylene, using silicotungstic acid as a catalyst. Toluene can be made by reacting benzene with methanol in the presence of a solid acid, which gives toluene and water.

IFRA status
See note

No IFRA Standard for the material itself (51st Amendment)

In Perfumery

Ethyl acetate is present in confectionery, perfumes, and fruits and imparts a brief ethereal, fruity, sweet aroma. In perfumes it evaporates quickly, leaving the scent of the perfume on the skin. Ethyl acetate is also used in artificial fruit essences and aroma enhancers, and in artificial flavours for confectionery, ice cream and cakes.

Role in the formula
01fruity accent
02solvent
Available as
synthetic accord fantasy note

See Also

9 notes