Dibutyl sulfide Property

Melting point:

-76 °C (lit.)

Boiling point:

188-189 °C (lit.)

Density 

0.838 g/mL at 25 °C (lit.)

vapor density 

5.07 (vs air)

vapor pressure 

5.17 mm Hg ( 37.7 °C)

refractive index 

n20/D 1.452(lit.)

FEMA 

2215 | BUTYL SULFIDE

Flash point:

170 °F

storage temp. 

Store below +30°C.

form 

Liquid

color 

Clear colorless to very slightly yellow

Odor

at 0.10 % in dipropylene glycol. green grassy violet-leaf herbal rose geranium

Odor Type

alliaceous

Odor Threshold

0.00051ppm

Water Solubility 

Silghtly miscible with water. Miscible with olive oil and almond oil.

JECFA Number

455

Merck 

14,1590

BRN 

1732829

Dielectric constant

4.4100000000000001

Stability:

Stable. Combustible. Incompatible with strong oxidizing agents.

InChIKey

HTIRHQRTDBPHNZ-UHFFFAOYSA-N

LogP

3.87

CAS DataBase Reference

544-40-1(CAS DataBase Reference)

NIST Chemistry Reference

Di-n-butyl sulfide(544-40-1)

EPA Substance Registry System

Dibutyl sulfide (544-40-1)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38-41

Safety Statements 

26-36/37/39-24/25-36

RIDADR 

2810

WGK Germany 

2

RTECS 

ER6417000

F 

13

TSCA 

Yes

HazardClass 

6.1(b)

PackingGroup 

III

HS Code 

29309070

Toxicity

LD50 orally in Rabbit: 2220 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H227Combustible liquid

H303May be harmfulif swallowed

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P370+P378In case of fire: Use … for extinction.

P403+P235Store in a well-ventilated place. Keep cool.

P405Store locked up.

P501Dispose of contents/container to..…

Dibutyl sulfide Chemical Properties,Usage,Production

Description

Dibutyl sulfide (also named as butyl sulfide; N-butyl sulfide; Di-n-butyl sulfide; butylthiobutane), a colorless to pale yellow clear liquid, is a symmetric thioether. Dibutyl sulfide is found in raw cabbage, boiled and cooked beef, and some varieties of mushroom.
Dibutyl sulfide is typically used as a flavoring agent. As a thioether, dibutyl sulfide has applications in organic synthesis as a solvent as well as a reagent. It is used to synthesize specific compound classes including property-enhancing additives, pharmacological drugs, chemical resistant polymers, detergents, and rubber antioxidants. Dibutyl sulfide can also be used as an agricultural intermediate, a sulfiding agent, a refinery catalyst, a lubricant additive, a gas odorant, and a processing aid in mining applications. Furthermore, it can be used as an internal standard in X-ray fluorescence spectrometry (XRF) measurements of sulfur in oils and other liquid hydrocarbon matrices.

References

[1] George A. Burdock (1996) Encyclopedia of Food and Color Additives, Band 1
[2] http://chemicalland21.com/specialtychem/NH/DIBUTYL%20SULFIDE.htm

Chemical Properties

colourless liquid with a very unpleasant smell

Chemical Properties

Butyl sulfide has an herbaceous, green, garlic, onion, heavy odor.

Occurrence

Reported found in raw cabbage, cooked beef and mushrooms.

Uses

Di-n-butyl sulfide is generally used as an agricultural intermediate, a sulfiding agent, a refinery catalyst, a lubricant additive, a gas odorant and a processing aid in mining applications. It finds application as an internal standard in X-ray fluorescence spectrometry (XRF) measurements of sulfur in oils and other liquid hydrocarbon matrices.

Preparation

From butyl bromide and sodium sulfide in boiling ethanol; according to some authors two forms exist, exhibiting different boiling points but identical solubilities in various solvents; both forms are insoluble in water.

Definition

ChEBI: Dibutyl sulfide is an aliphatic sulfide.

Aroma threshold values

Recognition: 0.88 ppb

Synthesis Reference(s)

Journal of the American Chemical Society, 73, p. 2251, 1951 DOI: 10.1021/ja01149a096
Tetrahedron Letters, 29, p. 4477, 1988 DOI: 10.1016/S0040-4039(00)80527-4

General Description

Butyl sulfide is a volatile sulfur compound that can be used as a flavoring agent.

Biochem/physiol Actions

Taste at 5 ppm

Purification Methods

Wash the sulfide with aqueous 5% NaOH, then water. Dry with CaCl2 and distil it from sodium. [Beilstein 1 IV 1559.]