Bismuththiol

Synonym(s):1,3,4-Thiadiazole-2,5-dithiol;Bismuthiol I;Bismuththiol I

CAS NO.：1072-71-5
Empirical Formula: C2H2N2S3
Molecular Weight: 150.25
MDL number: MFCD00003103
EINECS: 214-014-1
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:24:41

What is Bismuththiol?

Description

Dimercapto-1,3,4-thiadiazole (DMTD) is a low-molecular- weight aromatic compound used in the production of cop per corrosion inhibitors for engine oils, flame retardants and photographic development chemicals. Seven cases of industrial allergic sensitization were reported in a manufacturing plant.

Chemical properties

white to light yellow crystal powde

The Uses of Bismuththiol

Pharmaceutical intermediates; metallic passivator;antioxidant

The Uses of Bismuththiol

2,5-Dimercapto-1,3,4-thiadiazole is used in synthesizing polymers and heavy metal and basic salts. It acts as an additive in lubricating oils, greases and in electrode compositions. It also acts as an intermediate for pharmaceuticals and dyes, as a chelating agent in the analysis of metals. It also serves as an anticorrosion and antirust agent.

Flammability and Explosibility

Not classified

Contact allergens

This low-molecular-weight aromatic compound is used in the production of copper corrosion inhibitors for engine oils, fame retardants, and photographic devel- opment chemicals. Seven cases of industrial allergic sensitization were reported in a manufacturing plant.

Properties of Bismuththiol

Melting point:	162 °C (dec.)(lit.)
Boiling point:	211.3±23.0 °C(Predicted)
Density	1.575 (estimate)
vapor pressure	0.013Pa at 20℃
refractive index	1.5300 (estimate)
storage temp.	Store below +30°C.
form	Powder
pka	5.66±0.20(Predicted)
color	Off-white to yellow
Water Solubility	20 g/L (20 ºC)
λmax	320nm(CH3CN)(lit.)
BRN	113444
CAS DataBase Reference	1072-71-5(CAS DataBase Reference)
EPA Substance Registry System	1,3,4-Thiadiazolidine-2,5-dithione (1072-71-5)

Safety information for Bismuththiol

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05 Exclamation Mark Irritant GHS07 Environment GHS09
GHS Hazard Statements	H302:Acute toxicity,oral H318:Serious eye damage/eye irritation H411:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.