1,4-BUTANEDITHIOL

Synonym(s):1,4-Dimercaptobutane;Tetramethylene dimercaptan

CAS NO.：1191-08-8
Empirical Formula: C4H10S2
Molecular Weight: 122.25
MDL number: MFCD00004906
EINECS: 214-728-3
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 01:16:55

What is 1,4-BUTANEDITHIOL?

Chemical properties

clear colorless to pale yellow liquid

What are the applications of Application

1,4-Butanedithiol is used in self-assembled monolayers (SAMs)

Synthesis Reference(s)

The Journal of Organic Chemistry, 20, p. 50, 1955 DOI: 10.1021/jo01119a009

General Description

1,4-Butanedithiol, an alkanedithiol, is a food odorant. Its odor threshold is similar to its other homologs (propane-1,3-dithiol and pentane-1,5-dithiol).

Properties of 1,4-BUTANEDITHIOL

Melting point:	-53.9°C
Boiling point:	105-106 °C/30 mmHg (lit.)
Density	1.042 g/mL at 25 °C (lit.)
refractive index	n20/D 1.529(lit.)
Flash point:	>230 °F
form	liquid
pka	10.07±0.10(Predicted)
color	Colorless to Almost colorless
Odor	at 0.01 % in propylene glycol. sulfurous meaty
BRN	1697080
CAS DataBase Reference	1191-08-8(CAS DataBase Reference)
EPA Substance Registry System	1,4-Butanedithiol (1191-08-8)

Safety information for 1,4-BUTANEDITHIOL

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H227:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P370+P378:In case of fire: Use … for extinction. P403+P235:Store in a well-ventilated place. Keep cool. P501:Dispose of contents/container to..…