DMST

Synonym(s):N,N-Dimethyl-N′-tolylsulfonyldiamide

CAS NO.：66840-71-9
Empirical Formula: C9H14N2O2S
Molecular Weight: 214.28
MDL number: MFCD00144200
EINECS: 266-491-0
SAFETY DATA SHEET (SDS)
Update Date: 2026-05-28 06:31:00

What is DMST?

The Uses of DMST

4-Dimethylaminosulfotoluidide is an intermediate in the synthesis of Tolylfluanide (T536730), a polyvalent sulfamide fungicide that is closely related to dichlofluanide.

Definition

ChEBI: A member of the class of sulfamides that is N,N-dimethylsulfuric diamide substituted by a 4-methylphenyl group at the amino nitrogen atom. It is a metabolite of the agrochemical tolylfluanid.

Properties of DMST

Melting point:	80 °C
Boiling point:	319.7±35.0 °C(Predicted)
Density	1.260±0.06 g/cm3(Predicted)
Flash point:	2 °C
storage temp.	-20°C Freezer, Under inert atmosphere
solubility	Chloroform (Slightly), DMSO (Slightly), Ethyl Acetate (Slightly), Methanol (Slig
form	Solid
pka	7.67±0.50(Predicted)
color	White to Brown
EPA Substance Registry System	Sulfamide, N,N-dimethyl-N'-(4-methylphenyl)- (66840-71-9)

Safety information for DMST

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Exclamation Mark Irritant GHS07
GHS Hazard Statements	H225:Flammable liquids H302:Acute toxicity,oral H312:Acute toxicity,dermal H319:Serious eye damage/eye irritation H332:Acute toxicity,inhalation
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280:Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.