Bismuthiol I

Name: Bismuthiol I
Brand: Vaqora Chemicals
SKU: VQ-012344

About Bismuthiol I

Vaqora Chemicals supplies Bismuthiol I in AR grade, a sulfur heterocycle registered under CAS number 1072-71-5 with a typical assay of 98%. Formula C2H2N2S3, molecular weight 150.3 g/mol. Its systematic (IUPAC) name is 1,3,4-thiadiazolidine-2,5-dithione. It is also known as 1,3,4-Thiadiazole-2,5-dithiol or 2,5-Dimercapto-1,3,4-thiadiazole.

It is supplied as a solid. Reported physical data include a melting point of 162 °C (dec.). Keep the container tightly sealed and store it in a cool, dry area. It carries the GHS signal word “Danger” with 4 hazard statements. Review the Safety Data Sheet before use.

It is commonly used for polymer and resin production and fuels and lubricants. Our customers for this product work in pharmaceutical manufacturing, academic and industrial research and polymers and plastics.

Available in 10 g, 100 g and 1 kg packs, Bismuthiol I is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

Polymer & resin production
Fuels & lubricants

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Bismuthiol I
Catalogue No.	VQ-012344
CAS Number	1072-71-5
IUPAC name	1,3,4-thiadiazolidine-2,5-dithione
Molecular formula	C₂H₂N₂S₃
Molecular weight	150.3 g/mol
Exact mass	149.938
Grade	AR
Purity / assay	98%
HSN code	29349900
InChIKey	BIGYLAKFCGVRAN-UHFFFAOYSA-N
SMILES	C1(=S)NNC(=S)S1
PubChem CID	2723630

Physical properties
Physical form	Solid
Appearance	Solid
Melting point	162 °C (dec.)
LogP (XLogP3)	1.3
H-bond donors / acceptors	2 / 3
TPSA	114 Å²
Synonyms	1,3,4-Thiadiazole-2,5-dithiol, 2,5-Dimercapto-1,3,4-thiadiazole, Bismuthiol, 2,5-Dimercaptothiadiazole, Vanchem DMTD, PY 61H, bismuthol I, 2,5-dimercapto-1-thia-3,4-diazole, 5-mercapto-1,3,4-thiadiazolidine-2-thione, USAF A-8354, Usaf fa-4, Bismuththiol

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H318Causes serious eye damage
H319Causes serious eye irritation
H412Harmful to aquatic life with long lasting effects

Precautionary statements: P264, P264 + P265, P270, P273, P280, P301 + P317, P305 + P351 + P338, P305 + P354 + P338, P317, P330, P337 + P317, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of Bismuthiol I?

The CAS Registry Number of Bismuthiol I is 1072-71-5. It is also known as 1,3,4-Thiadiazole-2,5-dithiol, 2,5-Dimercapto-1,3,4-thiadiazole, Bismuthiol.

What is the molecular formula and molecular weight of Bismuthiol I?

Bismuthiol I has the molecular formula C2H2N2S3 and a molecular weight of 150.3 g/mol. Its IUPAC name is 1,3,4-thiadiazolidine-2,5-dithione.

Which grade and pack sizes of Bismuthiol I can I order?

We supply Bismuthiol I in AR (98%) grade, in 10 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Bismuthiol I?

Yes. Every lot of Bismuthiol I is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Bismuthiol I be shipped internationally?

Yes. Bismuthiol I is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.