1-butanethiol

Structural formula
General
Surname	1-butanethiol
other names	Mercaptan C4; 1-butyl mercaptan; Butane-1-thiol;
Molecular formula	C 4 H 10 S
Brief description	colorless liquid with an unpleasant odor
External identifiers / databases
EC number	203-705-3
ECHA InfoCard	100.003.370
PubChem	8012
Wikidata	Q195823
properties
Molar mass	90.19 g mol −1
Physical state	liquid
density	0.84 g cm −3
Melting point	−116 ° C
boiling point	98 ° C
Vapor pressure	40 mbar (20 ° C)
solubility	very sparingly soluble in water (0.597 g l −1 at 20 ° C)
Refractive index	1.4425 (20 ° C, 589 nm)
safety instructions
H and P phrases	H: 225-302-332
	P: 210-233-403 + 235
MAK	Switzerland: 0.5 ml m −3 or 1.9 mg m −3
Toxicological data	1500 mg kg −1 ( LD 50 , rat , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . Refractive index: Na-D line , 20 ° C

1-Butanethiol is a chemical compound belonging to the group of thiols .

Occurrence

1-Butanethiol occurs naturally as a component of skunk secretion .

Extraction and presentation

1-Butanethiol can be obtained by reacting 1-butene with hydrogen sulfide in the presence of a catalyst .

It is also possible to obtain it by reacting 1-bromobutane with sodium hydrogen sulfide .

properties

1-Butanethiol is a light- and air-sensitive, volatile, colorless liquid with an unpleasant smell of rotten onions or of a skunk, which is very difficult to dissolve in water. It decomposes when heated, producing sulfur oxides.

use

1-Butanethiol is used as a solvent, an intermediate product in the manufacture of insecticides , acaricides and herbicides, as well as to prevent damage by deer from eating on trees and bushes. It is also used to odorize natural gas.

safety instructions

The vapors of 1-butanethiol form explosive mixtures with air ( flash point −1 ° C).

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l Entry for CAS no. 109-79-5 in the GESTIS substance database of the IFA , accessed on September 20, 2012(JavaScript required) .
↑ Data sheet 1-butanethiol (PDF) from Merck , accessed on September 20, 2012.
↑ Swiss Accident Insurance Fund (Suva): Limit values - current MAK and BAT values (search for 109-79-5 or butanethiol ), accessed on November 2, 2015.
↑ Eberhard Breitmaier, Günther Jung: Organic chemistry . Georg Thieme Verlag, 2005, ISBN 3-13-541505-8 , p. 407 ( limited preview in Google Book search).
↑ ^a ^b Entry on 1-butanethiol in the Hazardous Substances Data Bank , accessed September 20, 2012.
^ A. William Johnson: Invitation to Organic Chemistry . Jones & Bartlett Learning, 1999, ISBN 0-7637-0432-6 , pp. 90 ( limited preview in Google Book search).

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l Entry for CAS no. 109-79-5 in the GESTIS substance database of the IFA , accessed on September 20, 2012(JavaScript required) .

[Merck-2] Data sheet 1-butanethiol (PDF) from Merck , accessed on September 20, 2012.

[3] Swiss Accident Insurance Fund (Suva): Limit values - current MAK and BAT values (search for 109-79-5 or butanethiol ), accessed on November 2, 2015.

[Eberhard_Breitmaier,_Günther_Jung-4] Eberhard Breitmaier, Günther Jung: Organic chemistry . Georg Thieme Verlag, 2005, ISBN 3-13-541505-8 , p. 407 ( limited preview in Google Book search).

[HSDB-5] Entry on 1-butanethiol in the Hazardous Substances Data Bank , accessed September 20, 2012.

[A._William_Johnson-6] A. William Johnson: Invitation to Organic Chemistry . Jones & Bartlett Learning, 1999, ISBN 0-7637-0432-6 , pp. 90 ( limited preview in Google Book search).